June 22, 2025
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Radiation Oncology (Radiotherapy)
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Overview
The Department of Radiation Oncology, located on the ground floor of the St. John’s Oncology Centre (St. John’s Medical College Hospital, closest access through Gate No. 2, Sarjapur Road), commenced its operations in January 2013. We offer expertise and facilities dedicated to providing high-quality and high-precision treatments.
The department is equipped with state-of-the-art technology, including a high-end Linear Accelerator (Elekta® Agility) and the Monaco treatment planning system (TPS) for external beam radiotherapy, both recently upgraded in the year 2023, along with a High Dose Rate (HDR) Brachytherapy unit from Eckert Zeigler® (HDR Multi source Brachytherapy unit).
Our department delivers a full spectrum of advanced radiotherapy, from 3DCRT and IMRT to high-precision IGRT and VMAT. We specialize in ultra-targeted treatments including SRS/SRT and SBRT, as well as complex, life-saving procedures such as Total Body Irradiation (TBI) for bone marrow transplants and Total Skin Electron Therapy (TSET) for cutaneous lymphomas.
The department has treated over 5,000 patients with external beam radiotherapy on the linear accelerator and conducted over 1,500 sessions of brachytherapy through December 2025.
Furthermore, we demonstrate our commitment to academic excellence by running the BSc Radiotherapy Technologist course since the year 2018 and MD Radiation Oncology course since the year 2020. Our MD and the BSc Courses are affiliated with Rajiv Gandhi University of Health Sciences, Bengaluru. The MD course is recognised by the National Medical Commission (NMC), and the BSc course is recognised by the Atomic Energy Regulatory Board (AERB).
Our department is dedicated to shaping the next generation of Radiation Therapy Physicians and Technologists through a curriculum rooted in systematic learning and reinforced by intensive practical exposure. We believe that a true master of radiotherapy must not only understand the physics of the beam but also the humanity of the patient sitting beneath it.
Our Team
Lead
Core Staff
Services
Advanced External Beam Radiotherapy
We are equipped to deliver highly precise treatments such as Intensity Modulated Radiotherapy (IMRT), Image Guided Radiotherapy (IGRT), Volumetric Modulated Arc Therapy (VMAT), Stereotactic Body Radiotherapy (SBRT), Stereotactic Radiotherapy (SRT) and Stereotactic Radiosurgery (SRS). We also are equipped to treat patients with 2D Conventional, 3DCRT and Electron beam therapy when its essential.
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Total Body Irradiation (TBI) and Craniospinal Irradiation (CSI)
Total Body Irradiation (TBI) is a specialized form of radiation therapy that involves treating the entire body with a uniform dose of radiation. It’s most commonly used as a "conditioning" treatment before a bone marrow transplant or stem cell transplant.Craniospinal Irradiation (CSI) is a technique where the Radiation is delivered to entire craniospinal access, for specific indications such as Medulloblastoma.
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Total Skin Electron Therapy (TSET)
TSET is a highly complex treatment that involves delivering electron beam therapy to the entire skin surface of the body. This procedure requires stringent quality assurance by the Medical Physics team and meticulous customization for each patient. It is used in the treatment of cutaneous lymphoma (Ex: Mycosis Fungoides)
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Radiotherapy under Anaesthesia
Paediatric patients with cancer and agitated patients requiring Radiotherapy are treated under Anaesthesia.
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Brachytherapy
Brachytherapy is placement of sealed radioactive sources in close proximity to the tumor and target tissue. We offer Intracavitary (ICBT), Interstitial (ISBT), Intraluminal (ILBT), and Surface Mould Brachytherapy (SMBT).
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Publications
Limited pelvic radiotherapy in post-operative uterine carcinoma
Hadrian Noel Alexander, Avinash H Udayashankara, Silpa Johnson, Nirmala Srikantia, John Michael Raj Clinicopathological Characteristics and Outcomes of Metaplastic Breast Cancer: Experience from a Tertiary Cancer Center in India
Vijaya L. V. Venkata,Donna C. P. Tharappel, Ganesha D. Vashishta, Rakesh S. Ramesh, Nirmala Srikantia, Akshai C. Kashiappa Trends in radiation therapy administration at a pediatric cancer center in South India
Sakshi Garg, Sandeep Muzumder, Hadrian Noel Alexander F, Avinash H. Udayashankara, Nirmala Srikantia, John Michael Raj Predictive Factors for Esophageal Stricture Following Definitive Chemoradiotherapy in Esophageal Carcinoma
Swathi R Krishna, Sandeep Muzumder, Silpa Johnson, Nirmala Srikantia, Avinash H U , Santu Ghosh, Rajesh Majumder Definitive radiotherapy with nodal boost for radiologically positive nodes in carcinoma cervix – A retrospective cohort study
Alexander, F Hadrian Noel; Udayashankara, Avinash H.; Nirmala, S; Sebastian, M G John; Muzumder, Sandeep; Raju, Jayalekshmi; Tripathy, Arkaja; Ghosh, Santu Evolving role of radiation therapy in paediatric cancer
Sakshi Garg, Sandeep Muzumder, S. Nirmala, H.U. Avinash Sepsis surveillance in patients with head-and-neck cancer undergoing chemo-radiation
Ajay Babu, Hadrian Noel Alexander F, Sandeep Muzumder, Nirmala Srikantia, Avinash H Udayashankar Radiation induced brachial plexopathy in head and neck cancer patients treated with definitive radiotherapy and correlation with disease characteristics and dosimetric parameters
F Hadrian Noel Alexander, Nirmala Srikantia, Sandeep Muzumder, Avinash H Udayashankara, Mg John Sebastian, Deepu C Tom, R P Kathiressan, John Michael Raj Aloe vera Alters Periostin Expression, Abolishes EMT Phenotype, and Sensitises Cells to Radiation in Conjunction With Atorvastatin in Cervical Cancer
P. Thomas, S. Sahoo, S. Mahajan, D.L. Hiremath, A.H. Udayashankara, S. Srivastava Hospital factors determining overall survival in cancer patients undergoing curative treatment
Sandeep Muzumder, Arkaja Tripathy, Hadrian N Alexander, Nirmala Srikantia A comparison of conventional and accelerated hypofractionated radiotherapy in definitive chemoradiation for locally advanced head and neck carcinoma: a retrospective cohort study
Arkaja Tripathy, Sandeep Muzumder, Nirmala Srikantia, Ajay Babu, Mg John Sebastian, Avinash H Udayashankar, Ganesha Dev Vashishta, John Michael Raj RhoC in association with TET2/WDR5 regulates cancer stem cells by epigenetically modifying the expression of pluripotency genes
Pavana Thomas, Sweta Srivastava, Avinash H Udayashankara, Samyuktha Damodaran, Lokendra Yadav, Boby Mathew, Srinag Bangalore Suresh, Amit Kumar Mandal, Nirmala Srikantia Volumetric image guidance for intravaginal brachytherapy: A dosimetric and clinical study
Avinash H Udayashankara, Nirmala Srikantia, Sandeep Muzumder, Suparna H Chandramouli, John M Raj , Mazhar H Shariff Late toxicities in locally advanced head and neck squamous cell carcinoma treated with intensity modulated radiation therapy
Sandeep Muzumder, Nirmala Srikantia, Avinash H Udayashankar, Prashanth Bhat Kainthaje, M G John Sebastian, John Michael Raj Burden of acute toxicities in head-and-neck radiation therapy: A single-institutional experience
Sandeep Muzumder, Nirmala Srikantia, Avinash H Udayashankar, Prashanth Bhat Kainthaje, M G John Sebastian Optimal time management on linear accelerator: A logical model to reduce patient waiting time
Avinash H Udayashankar, Shibina Noorjahan, Nirmala Srikantia, Ravindra Babu Kamunuri, Niranjan Immanuel, Sandeep Muzumder, S H Chandramouli, Mazhar H Shariff RhoC regulates radioresistance via crosstalk of ROCK2 with the DNA repair machinery in cervical cancer
Pranatharthi A, Thomas P, Udayashankar AH, Bhavani C, Suresh SB, Krishna S, Thatte J, Srikantia N, Ross Early Competing Deaths in Locally Advanced Head-and-Neck Cancer
Sandeep Muzumder, S Nirmala , HU Avinash , Prashanth Bhat Kainthaje , MG John Sebastian , John Michael Raj Optimal technique of radiotherapy for carcinoma cervix in developing countries: Dosimetric and logistic comparison
T R Arul Ponni , H U Avinash, S Nirmala, M G Janaki , A S Kirthi Koushik Optimal time management on linear accelerator: A logical model to reduce patient waiting time
Avinash H Udayashankar, Shibina Noorjahan, Nirmala Srikantia, Ravindra Babu Kamunuri, Niranjan Immanuel, Sandeep Muzumder, S H Chandramouli, Mazhar H Shariff Compliance, toxicity and efficacy in weekly versus 3-weekly cisplatin concurrent chemoradiation in locally advanced head and neck cancer
Sandeep Muzumder, Nirmala Srikantia , Ganesha Dev Vashishta , Avinash H. Udayashankar , John Michael Raj , M. G. John Sebastian and Prashanth Bhat Kainthaje Analgesic and Opioid Use in Pain Associated with Head-and-Neck Radiation Therapy
Sandeep Muzumder, S Nirmala, H U Avinash, Mg John Sebastian, Prashanth Bhat Kainthaje Immobilization versus no immobilization for pelvic external beam radiotherapy
Avinash H Udayashankar, Shibina Noorjahan, Nirmala Srikantia, K Ravindra Babu, Sandeep Muzumder Implication of Bifurcation of Abdominal Aorta for Radiotherapy Planning for Cervical Cancers.
Ponni TR, Avinash HU, Janaki MG, Koushik AS, Somashekar MK A prospective dosimetric and clinical comparison of acute hematological toxicities in three-dimensional conformal radiation therapy and intensity modulated radiation therapy with concurrent chemotherapy in carcinoma cervix
H U Avinash, T R Arul Ponni, M G Janaki, A S Kirthi Koushik, S Mohan Kumar No Data available for Book chapters.
No Data available for Books.
No Data available for Other Publications.
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Bsc RTT CON 2025