Precision Oncology Clinic · Bangalore

Dr. S. D. Shamsundar MBBS, MD, FAROI

Consultant Radiation Oncologist

Dr. S. D. Shamsundar is a Radiation Oncologist in Bangalore specialising in precision radiation therapy and modern radiotherapy techniques for selected cancers. His clinical practice focuses on personalised treatment planning, accurate radiation delivery and multidisciplinary cancer care.

Radiation Oncology IMRT IGRT VMAT SRS SBRT Brachytherapy

MBBS MD Radiation Oncology Fellowship — SRS & SBRT 10+ Years

Call +91 95915 35454 WhatsApp Appointment

Precision Radiation Individualised planning for selected cancer treatments

Advanced Techniques IMRT, IGRT, VMAT, SRS, SBRT and brachytherapy

Multidisciplinary Care Radiation integrated with surgical and medical oncology

About Dr. S. D. Shamsundar

Precision Radiation Oncology Focused on the Individual Patient

Dr. S. D. Shamsundar is a Consultant Radiation Oncologist in Bangalore with specialist training in Radiation Oncology and additional fellowship training in stereotactic radiation techniques. His practice focuses on personalised radiation treatment planning and the integration of radiotherapy into the wider cancer treatment pathway.

About Dr. S. D. Shamsundar

Dr. S. D. Shamsundar is a Consultant Radiation Oncologist associated with Precision Oncology Clinic in Vijayanagar, Bangalore. His specialist practice is centred on radiation oncology and the use of carefully planned radiotherapy for selected cancer conditions.

He completed his MBBS at M. S. Ramaiah Medical College and subsequently completed an MD in Radiation Oncology at King George Medical University, Lucknow.

He has also undertaken advanced fellowship training in Stereotactic Radiosurgery (SRS) and Stereotactic Body Radiation Therapy (SBRT), developing additional expertise in highly focused radiation treatment for appropriately selected clinical situations.

His clinical expertise includes modern radiation techniques such as Image Guided Radiation Therapy, Intensity Modulated Radiation Therapy, Volumetric Modulated Arc Therapy, stereotactic radiation and brachytherapy.

Clinical Focus

Expertise in Modern Radiation Oncology

Radiation treatment is planned according to the cancer type, location, stage, treatment intent and surrounding healthy structures. Different techniques may be appropriate for different patients.

Radiation Oncology

Assessment of whether radiation therapy should form part of an individual cancer treatment plan, including its role before or after other treatments where clinically appropriate.

Image-Guided Radiation

Image-guided techniques can help verify treatment positioning and improve the accuracy of radiation delivery during a treatment course.

Intensity Modulated Radiotherapy

IMRT uses advanced treatment planning to shape radiation dose around the target while considering nearby normal tissues.

Volumetric Modulated Arc Therapy

VMAT is an advanced radiation delivery approach that uses rotating treatment arcs to deliver a planned radiation dose efficiently.

SRS & SBRT

Stereotactic techniques deliver highly focused radiation for selected clinical situations where precision and appropriate patient selection are important.

Brachytherapy

Brachytherapy delivers radiation from a source positioned within or close to the treatment area and may be used for selected cancers.

Patient-Centred Radiation Care

Radiation Treatment Planned Around the Patient

No single radiation technique is appropriate for every patient. Treatment selection depends on the diagnosis, tumour characteristics, treatment intent, previous treatment, nearby organs and the patient's overall health. Dr. Shamsundar works within a multidisciplinary oncology approach when radiation needs to be integrated with surgery or systemic treatment.

Understand the Diagnosis

Review pathology, imaging, staging and other relevant clinical information before deciding whether radiation therapy has a role.

Plan the Treatment Precisely

Treatment planning considers the target area, radiation dose, treatment technique and nearby organs that may need protection.

Coordinate With the Cancer Team

Radiation treatment may be coordinated with surgical oncology, medical oncology, radiology and pathology depending on the individual cancer.

Expertise MD Radiation Oncology + advanced radiotherapy training

Specialist Training SRS & SBRT fellowship training

Clinical Practice Radiation oncology and precision radiotherapy

Research Oncology publications and professional presentations

Medical information: Radiation therapy is not appropriate for every cancer or every patient. The appropriate technique, dose, treatment schedule and combination with other therapies depend on individual clinical circumstances. This page is intended for general education and does not replace a personalised consultation with a qualified radiation oncologist.

Education & Specialist Training

Specialist Training in Radiation Oncology

Dr. S. D. Shamsundar's professional training combines undergraduate medical education, postgraduate specialisation in Radiation Oncology and advanced fellowship training in stereotactic radiation techniques.

Medical Education

MBBS

M. S. Ramaiah Medical College, Bangalore

Dr. Shamsundar completed his Bachelor of Medicine and Bachelor of Surgery, establishing his foundation in medicine, clinical assessment and patient care.

Postgraduate Specialist Training

MD in Radiation Oncology

King George Medical University, Lucknow

His postgraduate specialist training in Radiation Oncology established the clinical foundation for radiation treatment planning, cancer management and radiotherapy delivery.

Advanced Fellowship Training

Fellowship in SRS & SBRT

Stereotactic Radiosurgery & Stereotactic Body Radiation Therapy

Advanced fellowship training in SRS and SBRT provided additional specialist exposure to highly focused stereotactic radiation techniques used for selected clinical situations.

Advanced Training

From Radiation Oncology to Precision Radiotherapy

Modern radiation oncology combines clinical judgement, imaging, treatment planning and highly controlled radiation delivery.

Dr. Shamsundar's specialist training, together with additional SRS and SBRT fellowship experience, supports his clinical focus on precision radiation treatment for appropriately selected patients.

The appropriate radiation technique is determined by the cancer diagnosis, location, stage, treatment intent and individual patient factors.

Areas of Professional Expertise

Modern Radiation Treatment Planning

His clinical expertise includes several modern radiotherapy approaches used in contemporary radiation oncology.

Image Guided Radiation Therapy (IGRT)
Intensity Modulated Radiation Therapy (IMRT)
Volumetric Modulated Arc Therapy (VMAT)
Stereotactic Radiosurgery (SRS)
Stereotactic Body Radiation Therapy (SBRT)
Brachytherapy
Precision radiation planning
Multidisciplinary treatment planning

Professional Expertise

Clinical, Academic & Professional Oncology Experience

Radiation oncology requires continuing professional development as treatment technologies, planning methods and evidence-based cancer protocols evolve.

Consultant Radiation Oncologist

Provides specialist radiation oncology assessment and treatment planning for patients requiring radiotherapy as part of their cancer care.

Faculty & Academic Experience

His professional profile identifies him as a consultant and faculty member associated with Kidwai Memorial Institute of Oncology.

Oncology Research

His profile also describes involvement in national and international oncology publications and professional presentations.

MBBS M. S. Ramaiah Medical College

MD Radiation Oncology King George Medical University

SRS & SBRT Fellowship Advanced stereotactic radiation training

E-E-A-T Profile

Expertise Built Through Specialist Training & Practice

The combination of specialist radiation oncology education, advanced stereotactic training, clinical practice and academic involvement provides a clear professional foundation for Dr. Shamsundar's radiation oncology profile.

Expertise MD-level specialist training in Radiation Oncology

Advanced Training Fellowship training in SRS and SBRT

Clinical Practice Precision radiation and multidisciplinary cancer care

Academic Authority Consultant, faculty and oncology research involvement

Professional profile: Qualifications and professional roles presented on this page are based on the clinic's published doctor profile. Current professional affiliations, certifications and academic appointments should be kept updated as they change over time.

Advanced Radiation Oncology

Advanced Radiation Therapy Techniques

Radiation therapy is not a single treatment technique. The approach is selected according to the type, size and location of the tumour, the treatment goal, surrounding organs and the overall cancer treatment plan. Dr. S. D. Shamsundar uses modern radiation oncology techniques as appropriate for each patient's clinical situation.

IMRT

Intensity-Modulated Radiation Therapy

IMRT is an advanced form of external beam radiation therapy in which the intensity of radiation can be varied across different parts of the treatment field.

This allows the radiation plan to be shaped around the target while taking nearby normal tissues into consideration.

How it may be used:
Selected cancers where careful dose distribution around important nearby structures is clinically important.

Dose modulation External beam 3D planning

IGRT

Image-Guided Radiation Therapy

IGRT uses imaging during the radiation treatment process to help the clinical team verify the patient's position and the location of the treatment target.

Image guidance can be incorporated into treatment workflows when accurate positioning and target localisation are important.

How it may be used:
Treatments where changes in position, anatomy or target location need to be considered during treatment delivery.

Imaging Position verification Target localisation

VMAT

Volumetric Modulated Arc Therapy

VMAT is an advanced external beam radiation technique in which the treatment machine delivers radiation while rotating around the patient.

The treatment plan can vary radiation intensity and other delivery parameters during the arc to create a carefully planned dose distribution.

How it may be used:
Selected cancers where a conformal treatment plan and efficient radiation delivery are appropriate.

Arc therapy Dose optimisation External beam

SRS

Stereotactic Radiosurgery

SRS is a highly focused form of radiation treatment that delivers radiation to a precisely defined target, often using a limited number of treatment sessions.

Despite the name, SRS does not involve a surgical incision. It is a radiation treatment technique used for carefully selected clinical situations.

How it may be used:
Selected brain tumours and other appropriately selected targets where highly precise radiation delivery is indicated.

Stereotactic High precision Focused treatment

SBRT

Stereotactic Body Radiotherapy

SBRT delivers highly focused radiation to selected tumours outside the brain, using precise treatment planning and image guidance.

Treatment may be delivered over a smaller number of sessions than conventional radiation therapy in appropriately selected patients.

How it may be used:
Selected early-stage cancers, localised tumours and certain other carefully assessed clinical situations.

Stereotactic Body tumours Precision planning

Brachytherapy

Internal Radiation Therapy

Brachytherapy is a form of radiation treatment in which a radiation source is placed inside or close to the area being treated.

Because the radiation source is positioned close to the target, brachytherapy can be an important option for selected cancers and treatment situations.

How it may be used:
Selected cancers where internal radiation therapy is clinically appropriate, including certain gynaecological and other tumours.

Internal radiation Localised treatment Specialist technique

From Diagnosis to Treatment

How Advanced Radiation Treatment Is Planned

Radiation treatment planning involves more than selecting a machine or technique. The radiation oncology team reviews the clinical and imaging information and develops a treatment plan around the patient's individual circumstances.

Step 01

Clinical Assessment

The diagnosis, cancer type, stage, previous treatment and overall treatment objectives are reviewed.

Step 02

Imaging & Planning

Relevant imaging is used to define the treatment area and identify nearby organs and structures that need consideration.

Step 03

Dose Planning

The radiation plan is developed to deliver the prescribed dose to the intended target while considering surrounding normal tissues.

Step 04

Treatment Delivery

The selected technique and treatment schedule are delivered with appropriate positioning, verification and clinical monitoring.

Personalised Treatment Planning

Which Radiation Technique Is Right for a Patient?

There is no single radiation technique that is appropriate for every cancer or every patient.

The choice depends on the tumour and the treatment objective, together with imaging findings, previous treatments and the relationship between the tumour and nearby normal organs.

Dr. Shamsundar evaluates these factors before recommending an appropriate radiation treatment approach.

Cancer Type The biological and anatomical characteristics of the cancer.

Tumour Location Where the tumour is located and which structures are nearby.

Cancer Stage The extent of disease and the intended treatment objective.

Previous Treatment Any previous surgery, chemotherapy, immunotherapy or radiation.

Patient Factors Overall health, individual circumstances and treatment tolerance.

Multidisciplinary Plan Input from relevant oncology specialists when combined treatment is required.

Understanding Your Treatment

Questions Patients Often Ask About Radiation Therapy

Understanding why a particular technique has been recommended can make the treatment journey easier to navigate.

Is radiation therapy the same for every cancer? No. Treatment technique, dose and schedule vary according to the cancer and the individual clinical situation.

Is SRS actually surgery? Despite its name, stereotactic radiosurgery is a radiation treatment technique and does not involve a surgical incision.

What is the difference between IMRT and IGRT? IMRT refers to how radiation intensity is modulated, while IGRT refers to the use of imaging to help guide and verify treatment.

Does every patient need advanced radiation techniques? Not necessarily. The most appropriate technique is selected based on the patient's diagnosis, anatomy and treatment objectives.

Can radiation be combined with other cancer treatments? Yes. Depending on the cancer, radiation may form part of a treatment plan that also includes surgery, chemotherapy, immunotherapy or other systemic treatments.

Will the treatment plan be personalised? Radiation treatment planning is individualised according to the patient's diagnosis, imaging, anatomy and treatment goals.

Radiation Oncology Consultation

Discuss Your Radiation Treatment Options

If radiation therapy has been recommended for you or you are seeking an oncology opinion, a consultation can help you understand the available treatment approaches and why a particular technique may be considered.

Call +91 95915 35454 WhatsApp Clinic

Cancer-Specific Radiation Oncology

Radiation Therapy Across Different Types of Cancer

The role of radiation therapy varies considerably between cancers. It may be used as the main treatment for selected tumours, before or after surgery, together with systemic treatment, or to help control symptoms in appropriate situations. The treatment approach depends on the diagnosis, stage, tumour location and individual clinical factors.

Breast Cancer

Radiation therapy may form part of treatment for selected patients with breast cancer, particularly when local treatment is required following surgery or in other clinically appropriate situations.

Radiation planning may consider: tumour characteristics, surgical findings, lymph-node involvement and the areas requiring treatment.

Head & Neck Cancer

Radiation therapy is an important treatment modality for selected head and neck cancers and may be used alone or as part of combined treatment.

Planning focus: accurate targeting while carefully considering structures involved in speech, swallowing and other important functions.

Brain Tumours

Radiation therapy may be used for selected primary brain tumours and other intracranial conditions as part of an individualised treatment plan.

Advanced techniques: stereotactic approaches such as SRS may be considered for appropriately selected targets.

Lung Cancer

Radiation therapy may be recommended at different stages of lung cancer depending on whether the disease is localised, locally advanced or has other areas of involvement.

Precision options: highly focused techniques such as SBRT may be considered for selected early-stage or appropriately localised tumours.

Prostate Cancer

Radiation therapy can be part of the treatment strategy for selected patients with prostate cancer, depending on the stage and overall clinical picture.

Planning focus: accurate treatment of the prostate and relevant target areas while considering nearby organs such as the bladder and rectum.

Cervical Cancer

Radiation therapy is an important component of treatment for many patients with cervical cancer and may be combined with systemic treatment depending on the stage.

Radiation approach: external beam radiation and, where appropriate, brachytherapy may form part of treatment.

Gastrointestinal Cancers

Radiation therapy may be used for selected gastrointestinal cancers, depending on the organ involved, tumour location and stage.

Examples include: selected cancers of the rectum, oesophagus, stomach and other gastrointestinal sites where radiation has a defined clinical role.

Liver Cancer

Selected patients with liver tumours may be considered for radiation-based treatment depending on tumour characteristics, liver function and the overall treatment plan.

Precision planning: treatment planning takes into account the tumour and surrounding normal liver and other nearby organs.

Bone Tumours

Radiation therapy may have a role in selected bone tumours and particular clinical situations, depending on tumour type and treatment objectives.

Individual assessment: treatment decisions depend on pathology, tumour location and the wider cancer treatment strategy.

Soft Tissue Sarcoma

Radiation may be incorporated into treatment for selected soft tissue sarcomas, often as part of a broader multidisciplinary treatment plan.

Planning focus: tumour location, size, surgical strategy and nearby normal tissues are important considerations.

Paediatric Tumours

Radiation therapy for children requires particularly careful consideration of the child's age, diagnosis, treatment goals and potential long-term effects.

Specialist planning: treatment decisions should be made within an appropriate paediatric oncology care pathway.

Gynaecological Cancers

Radiation therapy may be used in selected gynaecological cancers, either as part of the primary treatment plan or alongside surgery and systemic therapy.

Radiation options: external beam radiation and brachytherapy may be considered depending on the cancer and treatment objectives.

Understanding Treatment Timing

When Can Radiation Therapy Be Used?

Radiation therapy can have different roles during the cancer treatment journey. Its timing depends on the cancer type, stage and treatment objective.

Before Surgery

In selected cancers, radiation may be given before surgery as part of a treatment strategy intended to manage the local tumour before an operation.

After Surgery

Radiation may be recommended after surgery when the clinical assessment indicates that additional local treatment may be appropriate.

As a Primary Treatment

For certain cancers, radiation therapy can be an important primary treatment option, either alone or in combination with other therapies.

Alongside Systemic Therapy

Some cancers are treated using radiation together with chemotherapy or other systemic treatments when clinically indicated.

Precision Treatment

Stereotactic techniques may be considered for selected small or well-defined tumours where highly focused radiation is appropriate.

Symptom Management

In selected advanced cancers, radiation may be used to help control symptoms caused by a particular tumour or area of disease.

Coordinated Cancer Care

Radiation Is Often One Part of a Larger Cancer Treatment Plan

Cancer treatment may involve more than one oncology specialty. Depending on the diagnosis, radiation therapy may need to be coordinated with surgery, chemotherapy, immunotherapy, targeted treatment or supportive care.

A multidisciplinary approach allows the treatment team to consider the sequence and role of each treatment rather than evaluating radiation in isolation.

Surgical Oncology Evaluates whether surgery is appropriate and how radiation may fit around the surgical treatment.

Medical Oncology Guides systemic treatments such as chemotherapy, immunotherapy and targeted therapy where appropriate.

Radiation Oncology Determines the role of radiation and develops the appropriate treatment plan.

Radiology & Pathology Imaging and pathology help establish the diagnosis, stage and characteristics of the tumour.

Important: Radiation treatment is individualised

The information above describes situations in which radiation therapy may have a role. It does not mean that every patient with a particular cancer will require radiation. The recommended technique, dose, treatment area and schedule depend on the individual diagnosis, staging, imaging, pathology, previous treatment and overall health. A Radiation Oncologist should assess the patient's case before a treatment decision is made.

Radiation Oncology Consultation

Understand Whether Radiation Therapy May Be Appropriate

If you have been diagnosed with cancer and want to understand whether radiation therapy could form part of your treatment plan, discuss your diagnosis, scans and pathology reports with a Radiation Oncologist.

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Precision Radiation Planning

From Radiation Consultation to Follow-Up Care

Modern radiation therapy involves a structured process of assessment, imaging, treatment planning, verification, delivery and clinical monitoring. Each stage contributes to developing and delivering a treatment plan suited to the patient's diagnosis and treatment goals.

Consultation

Clinical Assessment & Treatment Discussion

The Radiation Oncologist reviews the diagnosis, pathology, imaging, cancer stage, previous treatments and overall treatment objectives. The consultation helps determine whether radiation has a role and which treatment approach may be appropriate.

Preparation

Radiation Simulation

Simulation establishes the patient's treatment position and obtains the imaging and information required for radiation planning. Depending on the treatment, immobilisation devices or other positioning aids may be used to help reproduce the planned position.

Imaging

Treatment Planning Imaging

CT-based simulation is commonly used for external beam radiation planning. Other diagnostic imaging may also be reviewed or integrated when clinically appropriate to better define the treatment target and surrounding anatomy.

Contouring

Defining the Target & Important Organs

The treatment team identifies the tumour or treatment target and relevant normal structures that need to be considered during planning. This process is an important part of developing an appropriate radiation treatment plan.

Planning

Creating the Radiation Treatment Plan

The Radiation Oncologist and radiation planning team determine the appropriate treatment technique, dose, fractionation and treatment geometry. Computer-based planning is used to calculate how radiation can be delivered to the intended target while considering nearby normal tissues.

Verification

Plan Review & Treatment Verification

Before treatment begins, the plan and treatment setup are reviewed. Depending on the technique, image guidance and other verification procedures may be used to confirm positioning and treatment delivery.

Treatment

Radiation Treatment Delivery

The prescribed radiation treatment is delivered according to the planned schedule. The number of sessions and treatment duration depend on the cancer, treatment objective and selected radiation technique.

Monitoring

Clinical Review During Treatment

Patients may have clinical reviews during the treatment course. The oncology team monitors the patient's progress, treatment tolerance and any concerns that may require attention.

Follow-Up

Post-Treatment Follow-Up

After radiation therapy, follow-up is planned according to the patient's diagnosis and overall cancer treatment pathway. Follow-up may involve clinical assessment, imaging or coordination with other oncology specialists when appropriate.

Planning Before Treatment

What Happens During Radiation Simulation?

Simulation is a planning procedure rather than the actual delivery of radiation treatment. It establishes the position and imaging information required to design the treatment plan.

The patient is positioned in a way that can be reproduced during treatment. Depending on the treatment site, customised positioning or immobilisation may be used.

CT or other appropriate imaging is then used to provide the anatomical information needed for treatment planning.

Positioning Establishing a reproducible treatment position.

Immobilisation Positioning aids may be used when clinically required.

Planning Imaging Imaging provides anatomical information for treatment planning.

Reference Marks Appropriate reference points may help reproduce the planned setup.

Target Definition The treatment team identifies the relevant treatment volumes.

Normal Structures Nearby organs and tissues are considered during treatment planning.

Treatment Planning

What Is Considered When Creating a Radiation Plan?

A radiation treatment plan is developed around the patient's anatomy, cancer characteristics and treatment objective. The planning process is not simply about selecting a radiation machine.

Treatment Target

The tumour and relevant areas at risk are identified so that the treatment plan addresses the intended clinical target.

Nearby Organs

Normal tissues and organs close to the treatment area are considered when developing and evaluating the radiation plan.

Dose & Fractionation

The prescribed radiation dose and number of treatment sessions are determined according to the diagnosis and treatment objective.

Radiation Technique

Techniques such as IMRT, VMAT, SRS, SBRT or other appropriate approaches may be selected according to the clinical situation.

Patient Position

Reproducible positioning is important so that treatment can be delivered according to the planned geometry.

Image Guidance

When appropriate, imaging during treatment can help verify patient positioning and target localisation.

During Treatment

Radiation Treatment Includes Ongoing Clinical Monitoring

Radiation treatment is not simply a sequence of appointments. Depending on the treatment course, the clinical team reviews the patient's progress and addresses treatment-related concerns.

Clinical Review Assessment of how the patient is progressing during treatment.

Treatment Tolerance Review of symptoms or treatment-related concerns when present.

Image Guidance Appropriate verification may be incorporated during treatment.

Plan Review Treatment plans may be reviewed or adapted when clinically required.

Preparing for Consultation

What Should You Bring to a Radiation Oncology Consultation?

Having relevant medical information available can help the Radiation Oncologist understand your diagnosis and previous treatment history.

Pathology or biopsy reports
Recent CT, MRI, PET-CT or other relevant imaging reports
Imaging CDs or digital scans, where available
Previous operation or surgical reports
Previous chemotherapy or systemic treatment details
Previous radiation treatment records, if applicable
Current medication list
Relevant medical history and previous treatment summaries

Important: Every radiation treatment plan is individualised

The exact planning process, imaging requirements, treatment technique, dose, number of sessions and follow-up schedule vary according to the patient's cancer and clinical circumstances. The information on this page is for general education and does not replace an individual consultation with a Radiation Oncologist.

Precision Oncology Clinic

Have Questions About Your Radiation Treatment Plan?

Bring your pathology reports, scans and previous treatment records for an oncology consultation to understand whether radiation therapy may have a role in your individual treatment plan.

Call +91 95915 35454 WhatsApp Clinic

Multidisciplinary Cancer Care

Radiation Oncology Within a Coordinated Cancer Care Team

Cancer treatment often involves more than one specialist. Radiation therapy may need to be coordinated with surgery, systemic treatment, diagnostic imaging and pathology. A multidisciplinary approach helps bring these different perspectives together when developing an individualised treatment strategy.

Coordinated Decision-Making

Why Can Multidisciplinary Cancer Care Matter?

Different cancer specialists approach a diagnosis from different clinical perspectives. A surgeon may evaluate whether an operation is appropriate, while a Medical Oncologist considers systemic treatment and a Radiation Oncologist evaluates the role of radiation.

Bringing these perspectives together can help determine the sequence, combination and timing of treatments when more than one treatment modality is appropriate.

At Precision Oncology Clinic, medical, surgical and radiation oncology expertise forms the foundation of its multidisciplinary cancer care approach.

Complete Clinical Picture Diagnosis, staging, pathology and imaging can be considered together.

Treatment Sequencing Specialists can consider which treatment should come first and how different treatments may be coordinated.

Individualised Decisions Treatment recommendations can reflect the patient's cancer, health and treatment goals.

Continuity of Care Patients can receive coordinated guidance across different stages of their cancer journey.

The Oncology Team

Different Specialists, One Coordinated Treatment Strategy

Depending on the diagnosis, several clinical disciplines may contribute to the evaluation and treatment of a cancer patient.

Surgical Oncology

Evaluates the role of cancer surgery and how an operation may fit within the overall treatment pathway.

Medical Oncology

Guides systemic cancer treatments such as chemotherapy, immunotherapy and targeted treatment when clinically appropriate.

Radiation Oncology

Evaluates the role of radiation and develops an appropriate radiation treatment and planning strategy.

Radiology & Pathology

Imaging and pathology provide important information for diagnosis, staging, treatment planning and assessment.

Dr. S. D. Shamsundar

The Role of a Radiation Oncologist in Your Cancer Care

A Radiation Oncologist specialises in the use of radiation therapy for cancer treatment. The role extends beyond operating the radiation equipment.

Dr. Shamsundar evaluates whether radiation has a role in the patient's treatment plan, selects an appropriate treatment approach when indicated and oversees the planning and delivery of radiation therapy.

His documented clinical expertise includes IMRT, IGRT, VMAT, SRS, SBRT and brachytherapy, supported by specialist training in Radiation Oncology and advanced fellowship training in SRS and SBRT.

Reviews diagnosis, pathology, imaging and cancer stage.
Determines whether radiation therapy may be appropriate.
Selects an appropriate radiation technique based on the clinical situation.
Oversees radiation treatment planning and prescription.
Considers nearby organs and normal tissues during planning.
Coordinates radiation treatment with surgery or systemic therapy when required.
Monitors patients during treatment and addresses treatment-related concerns.
Participates in follow-up and ongoing cancer care.

Patient-Centred Care

Radiation Treatment Should Be Explained, Not Just Delivered

Understanding a cancer diagnosis and its treatment can be difficult. Clear communication allows patients and families to understand why a particular treatment has been recommended and what to expect.

Clear Treatment Explanations

Patients can discuss the purpose of radiation therapy, the proposed technique, treatment schedule and relevant considerations before treatment begins.

Understanding Your Options

Where more than one treatment approach may be possible, patients can discuss how radiation fits within the wider cancer treatment plan.

Discussing Side Effects

Potential treatment-related effects depend on the treatment area, dose and individual circumstances and should be discussed as part of the consultation.

Family Involvement

Patients may wish to involve family members or caregivers in discussions so that important treatment information is understood and remembered.

Questions Are Encouraged

Patients can ask about treatment goals, expected schedule, preparation, possible side effects and follow-up requirements.

Ongoing Support

Cancer care continues beyond the final radiation session, with follow-up planned according to the patient's diagnosis and wider treatment pathway.

Professional Practice

Clinical Expertise Supported by Specialist Training

Dr. Shamsundar's professional profile combines specialist Radiation Oncology training, advanced stereotactic radiation training, multidisciplinary cancer care and involvement in oncology education and research.

Specialist Radiation Oncology Training

MBBS from M. S. Ramaiah Medical College followed by MD training in Radiation Oncology from King George Medical University, Lucknow.

Advanced SRS & SBRT Training

Advanced fellowship training in Stereotactic Radiosurgery and Stereotactic Body Radiation Therapy supports expertise in high-precision radiation treatment.

Multidisciplinary Collaboration

Radiation treatment planning can be coordinated with surgical, medical, radiological and pathological expertise when required.

Advanced Radiation Techniques

Clinical expertise includes IMRT, IGRT, VMAT, SRS, SBRT and brachytherapy.

Oncology Research

His professional profile includes participation in oncology research through national and international publications and presentations.

Cancer Awareness

Professional involvement also includes cancer awareness and early-detection initiatives.

Personalised Cancer Care

Why a Personalised Radiation Oncology Approach Matters

The same cancer type may require different treatment strategies depending on stage, tumour location and individual clinical factors.

Radiation technique is selected according to the treatment target, surrounding anatomy and clinical objective.

Previous surgery, chemotherapy or radiation may influence future treatment decisions.

Imaging and pathology provide important information for radiation treatment planning.

Multidisciplinary discussion can help coordinate surgery, systemic therapy and radiation when these treatments are combined.

Patient preferences, overall health and treatment goals are also relevant to cancer treatment decisions.

Radiation Oncology Consultation

Discuss Your Cancer Treatment Plan With a Radiation Oncologist

If radiation therapy has been recommended or you would like to understand how radiation may fit into your overall cancer treatment, bring your reports and scans for a specialist consultation.

Call +91 95915 35454 WhatsApp Clinic

Radiation Oncology FAQs

Frequently Asked Questions About Radiation Therapy

Patients often have questions about radiation treatment, advanced techniques, treatment duration, side effects and how radiation fits into the wider cancer treatment plan. These answers provide general information; your individual treatment plan depends on your diagnosis, stage, imaging and clinical circumstances.

What does a Radiation Oncologist do?

A Radiation Oncologist is a doctor who specialises in using radiation therapy to treat cancer. They assess whether radiation may have a role in treatment, select an appropriate technique and treatment schedule, oversee radiation planning and monitor patients during and after treatment.

When is radiation therapy recommended for cancer?

Radiation therapy may be used as a primary treatment for selected cancers, before or after surgery, together with systemic treatment, or to control symptoms in selected advanced cancers. The decision depends on the cancer type, stage, tumour location, previous treatment and overall treatment goals.

Is radiation therapy painful?

The delivery of external beam radiation itself is generally not painful. However, patients can experience side effects during or after treatment depending on the treatment area, dose, technique and individual factors. Your Radiation Oncologist will explain the possible effects relevant to your treatment.

How long does radiation treatment take?

Treatment duration varies considerably. Some radiation treatments are delivered over several weeks, while selected stereotactic treatments such as SRS or SBRT may be completed in fewer sessions. The number of treatments is determined by the cancer, treatment objective and selected radiation technique.

What is IMRT?

IMRT, or Intensity-Modulated Radiation Therapy, is an advanced external beam radiation technique in which radiation intensity is varied across the treatment field. It allows the treatment plan to be shaped around the intended target while taking nearby normal tissues into consideration.

What is IGRT?

IGRT, or Image-Guided Radiation Therapy, uses imaging during the treatment process to help verify patient positioning and the location of the treatment target. It may be incorporated when accurate target localisation is clinically important.

What is VMAT?

VMAT, or Volumetric Modulated Arc Therapy, is an external beam radiation technique in which radiation is delivered while the treatment machine rotates around the patient. The treatment plan can vary radiation intensity and delivery parameters during the arc to create a planned dose distribution.

What is SRS?

SRS, or Stereotactic Radiosurgery, is a highly focused radiation treatment technique used for selected intracranial and other carefully chosen targets. Despite the term "radiosurgery", it does not involve a surgical incision.

What is SBRT?

SBRT, or Stereotactic Body Radiation Therapy, is a highly focused radiation technique used for selected tumours outside the brain. It may allow treatment to be delivered in fewer sessions for appropriately selected patients.

What is brachytherapy?

Brachytherapy is a form of internal radiation therapy in which a radiation source is placed inside or close to the area being treated. It may be used for selected cancers when internal radiation is clinically appropriate.

Will I need chemotherapy along with radiation therapy?

Some cancers are treated using both radiation and systemic treatment such as chemotherapy. Whether these treatments should be combined depends on the cancer type, stage, pathology, treatment objective and the patient's overall clinical situation.

Can radiation therapy cure cancer?

Radiation therapy can have a curative role for some cancers and treatment situations. In other circumstances, it may be used to control disease, reduce symptoms or support quality of life. Whether radiation is intended to cure, control or relieve symptoms depends on the individual diagnosis and treatment plan.

How is the radiation treatment technique selected?

The Radiation Oncologist considers the cancer type, stage, tumour size and location, nearby organs, previous treatment, imaging, overall health and treatment objectives. Based on these factors, an appropriate radiation technique and treatment schedule can be selected.

What should I bring to my Radiation Oncology consultation?

Bring available pathology or biopsy reports, imaging reports and scans, previous operation reports, chemotherapy or systemic treatment details, previous radiation records if applicable, and your current medication list. These records can help the Radiation Oncologist understand your diagnosis and previous treatment.

How often will I need follow-up after radiation therapy?

Follow-up depends on the cancer type, treatment received, response to treatment and the wider oncology care plan. Your Radiation Oncologist and other members of your oncology team will determine the appropriate follow-up schedule.

Does every cancer patient need advanced radiation techniques?

No. Advanced techniques are not automatically required for every patient. The most appropriate treatment method depends on the cancer, treatment target, anatomy, clinical objective and available treatment options.

Quick Answers

Radiation Oncology at a Glance

Simple answers to common questions patients may have before a Radiation Oncology consultation.

What is radiation oncology? A medical specialty focused on using radiation therapy to treat cancer and selected cancer-related conditions.

What is IMRT? An advanced external beam radiation technique that modulates radiation intensity across the treatment field.

What is IGRT? Image-guided radiation therapy uses imaging to help verify positioning and target localisation.

What is SRS? A highly focused stereotactic radiation technique used for selected intracranial and other carefully selected targets.

What is SBRT? A stereotactic radiation technique used for selected tumours outside the brain, often in fewer treatment sessions.

What is brachytherapy? Internal radiation therapy in which a radiation source is placed inside or close to the treatment area.

Medical information

This FAQ provides general educational information about radiation oncology. It does not replace an examination, diagnosis or personalised medical advice from a qualified healthcare professional. Radiation treatment decisions should be made after appropriate clinical assessment.

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