Radiation Oncology

• DNB Radiation Therapy, Tata Memorial Hospital, Mumbai. Diplomat of National Board New Delhi
• M.D Radiation Therapy, Kidwai Memorial Institute of Oncology, Bangalore University
• M.B.B.S. Jawaharlal Nehru Medical College, Belgaum, Karnataka University Dharwad.

• Professor & HOD Radiation Oncology Vydehi Institute of Medical Sciences & Research Centre, Bangalore
• Associate Professor Radiation Oncology Vydehi Institute of Medical Sciences & Research Centre, Bangalore
• Assistant Professor Radiation Oncology Vydehi Institute of Medical Sciences & Research Centre, Bangalore
• Assistant Professor Radiation Oncology AIIMS-Kochi
• Registrar (junior & Senior) Radiation Oncology Tata Memorial Centre, Mumbai
• Lecturer (ADHOC) Radiation Oncology Kidwai Memorial Institute of Oncology, Bangalore
• Resident Radiation Oncology Karnataka,Cancer Therapy and Research Institute, Hubli

• Proficient in performing high precision radiation therapy including Stereotactic radiosurgery(SRS) and Stereotactic body radiotherapy (SBRT) or Stereotactic ablative body radiotherapy(SABRY); Respiratory Gated IGRT, Volumetric arc Modulated Radiation Therapy (VMAT); Image Guided Radiation Therapy with Respiratory Gating (IGRT); Intensity Modulated Radiation Therapy (IMRT), Total skin electron radiation therapy ( TSET) which is performed in very few centers in India; Conformal Radiation therapy
• Brachytherapy techniques: Intracavitary, Intraluminal, Surface Mould, Interstitial with image-guided brachytherapy; Ophthalmic applicator for eye malignancies

• Dr. Geeta S. Narayanan is a distinguished radiation oncologist known for her expertise in cancer care. With extensive experience and a solid academic background, she has held key roles in prestigious medical institutions.
• Dr. Narayanan’s clinical proficiency spans various radiation therapy techniques, including external beam radiation therapy (EBRT) and brachytherapy.
• She is also actively involved in research, with numerous publications and presentations focusing on cervical cancer, head and neck cancer, and brain tumors.
• Committed to social responsibility, Dr. Narayanan collaborates with NGOs to raise cancer awareness. As a peer reviewer for leading oncology journals, she contributes significantly to the field.
• Dr. Narayanan’s dedication to patient care, combined with her research contributions, positions her as a respected leader in radiation oncology.

• IGRT: Rig hospitalite, Copenhagen; 2007
• IMRT: Charite Campus Mitte, Berlin; 2007
• VMAT: Oncology Institute of Southern Switzerland, Switzerland; 2014

• Member of Medical Executive Committee (MEC) of the Vydehi Hospital since September 2020
• Served as President presently of Association of Radiation Oncologists of India (AROI), Karnataka state chapter, Bangalore
• Member of the Consultative Oncology Committee (Suvarna Arogya Raksha Trust Schemes) by the Government of Karnataka

• Life member of Association of Radiation Oncologists of India (AROI)
• Life member of College of Radiation Oncologists of India (ICRO)
• Life Member of ISO (Indian Society of Oncology)

• Recognized guide under Rajiv Gandhi University of Health Sciences for postgraduate training in radiation oncology.
• Examiner with other state Universities.
• Teacher for ICRO (Indian College of Radiation Oncology) courses.
• Chaired many national conferences.
• Invited speaker, panelists for National & state-level conferences.

• Principal and Co-investigators in various clinical trials.
• Received funding from Rajiv Gandhi University of Health Sciences (RGUHS), Bangalore for conducting trials.

• Associated with many NGOs and actively involved in creating awareness about cancer and screening of cancers.

• Indian Journal of Cancer
• Cancer Treatment and Research Communications (International Journal)
• Translational Oncology (International journal)

• Veda Varshne D Nath, Geeta S.N., Salman S. Hippocampal sparing in radiation therapy to primary brain tumors and impact on memory function in adults. European Journal of Molecular and Clinical medicine. Volume 9, Issue 4, Winter 2022
• Priyanka M. V.P. Dr Prameela C.G., Dr Geeta S.N. Intramuscular injection of human placental extract versus conventional symptomatic approaches in radiation-induced oral mucositis in patients with head and neck cancers on definitive chemoradiotherapy, A ray of hope? Accepted for publication in Journal of Cancer Research and Therapeutics on 9th November 2022
• Richa Tiwari, Geeta S. Narayanan, Vaishnavi Perumal Reddy, BhaskarViswanathan, Impact of Nodal Boost Irradiation and MR-based brachytherapy on Oncologic Outcomes in High-risk Cervical Cancer: Gynecol Oncol. 2021 Oct;163(1):110-116. doi: 10.1016/j.ygyno.2021.07.023. Epub 2021 Jul 23 GYN-21-699
• Surekha Goyal, Richa Tiwari, Geeta S Narayanan, Sowmya Narayanan. A Comparative study evaluating the dose volume parameters in 3-D conformal radiation of left-sided whole breast irradiation including regional lymph nodes- a need of resource-constrained countries. Rep Pract Oncol Radiother. 2021; 26(6): 1003-1009 Published online 2021 Dec 30. doi: 10.5603/RPOR.a2021.0125
• Suresh Raghunath, Richa Tiwari, Geeta S N et al- Impact of radical dose escalation by endoluminal brachytherapy and induction chemotherapy in the definitive treatment of locally advanced esophageal cancer. UC_535_20R13
• Divyashree N, Geeta S N, Sowmya Narayanan, Bhanumathy G. Dosimetric Comparative study of 3 Dimensional Conformal Radiation Therapy(3D-CRT), Volumetric-Modulated Arc Therapy {V-MAT) and Hybrid V-MAT(H-VMAT} in Radiotherapy of Cancer of the Esophagus, Accepted for publication in Indian Journal of Cancer
• Narayanan G, Mandakulutar G, Rishab Kumar “Comparison of treatment response in cervical carcinoma patients infected with HPV168 HPV18 who are treated with Chemo radiation” Accepted for publication in Journal of Cancer Research and Therapeutics
• Chatakonda S Snehit, Bhaskar Vishwanathan, Geeta S Narayanan et al. “Comparison of Hyperfractionated Radiotherapy with Concomitant Chemotherapy and Conventional Chemoradiotherapy in Locally Advanced Head and Neck Cancer Treated with Volumetric Modulated Arc Technique (VMAT)” Acta Scientific CANCER BIOLOGY (ISSN: 2582-4473) Volume 5 Issue 5 May 2021, 1-11
• Rishabh Kumar, Geeta S. Narayanan, Bhaskar Vishwanthan, Sowmya Narayanan, Sanjeet Mandal. A prospective comparative dosimetric study between diffusion-weighted MRI (DWI) & T2-weighted MRI (T2W) for target delineation and planning in cervical cancer brachytherapy. Reports of Practical Oncology & Radiotherapy, Volume 25, Issue 6, November-December 2020, Pages 1011-101
• Rishabh Kumar, Prachi Kala, Geeta Narayanan Bhaskar Vishwanathan, Sowmya Narayanan, Sanjeet Mandal, Evaluation and evolution of apparent diffusion coefficient (ADC) in image-guided adaptive brachytherapy (IGABT) for cervical cancer. Brachytherapy Volume 20, Issue 1, January—February 2021, Pages 112-117
• Mathew Varghese K., Geeta S. Narayanan, Bhaskar Vishwanathan Shashidhar V. Karpurmath, Soumya Narayanan “Comparison of altered fractionation schedule with concurrent chemo-radiation for squamous cell carcinoma of the head and neck “. Int J Res Med Sci. 2020 Aug, 8(8) www.msjonline.orgplSSN 2320-6071 | elSSN 2320-6012
• B. Namratha Sai Reddy, Rashmi Shivananjappa, Geeta S. N., Richa Tiwari. Use of 4-Dimensional Cone Beam Computed Tomography Scan to Estimate the Planning Target Volume Margin in Lung Tumors. Asian Journal of Oncology July 2020; 06:3-9
• Naveen B., Geeta S. Narayanan, Sowmya Narayanan. “Necessity of re-planning during the intensity-modulated radiotherapy (IMRT) for head and neck cancer to ensure adequate coverage of the target volume.” International Journal of Medical Research and Review. March-April 2020 (in Vol8 Issue 2 of 2020)
• Mandakulutar. G, Narayanan G., Rishab Kumar “Change of telomerase activity in peripheral blood of patients with head and neck squamous cell carcinoma pre and post curative treatment” Rep Pract Oncol Radiother. 2020 Jan-Feb; 25(1): 28-34. Published online 2019 Dec 1. doi: 10.1016/j.rpor.2019.10.011
• Tiwari R, Narayanan GS, Narayanan S, Suresh Kumar P. “Long-term effectiveness and safety of image-based, transperineal combined intracavitary and interstitial brachytherapy in treatment of locally advanced cervical cancer”. Brachytherapy Jan-Feb 2020; 19(1):73-8
• Med Cheemala Sushmitha, Geeta S Narayanan, MS Ganesh. “Neo-adjuvant chemo-radiation therapy in T4 resectable oral cavity cancer” Hematol Oncol, 2019 doi: 10.15761/HMO0.1000182
• Tiwari R, Narayanan GS, Jayakumar V, Narayanan S, Viswanathan B, Mandal SK, Babu S, Ramya V, George D; “The promise of image-guided brachytherapy of better clinical outcomes in the treatment of cervical cancer: Does it deliver? An Indian scenario” Gynecol Oncol. 2018 doi: 10.1016/j.ygyno.2018.07.012. Epub 2018 Jul 17
• Babu Suresh, Narayanan Sowmya, Venugopal, Ramya, Narayanan Geeta, “Is Volumetric Modulated Arc Therapy (VMAT) an option for Cranial irradiation (CSI)?” Pan Arab Journal of Oncology, Vol. 10: No. 3 December 2017
• Shashidhar V. Karpurmath, ShravanNimma, Geeta S. Narayanan, Manjunath I. Nandennannavar; “Prospective comparative study of dose International neoadjuvant chemotherapy followed by chemoradiation and definitive chemoradiation alone in stage IB2-IVA cervical cancer” Journal of Reproduction, Contraception, Obstetrics and Gynecology (2016),(5)9:2909-2914
• Arpitha radiation S. Rao, Rishabkumar, Geeta S Narayanan; “A rare case of cisplatin-induced acute myocardial infarction in a patient receiving chemo for lung cancer” J Cancer Res Ther(2018), Oct-Dec; 11 (4):983-585
• Arpitha S. Rao, Geeta S. Narayanan, Manjunath N; “Carcinoma cervix presenting with clivus metastasis” J Cancer Res ther (2015) july-sep; 11(3):662
• Arpitha S. Rao, KarthiikRajmanickam, Geeta S. Narayanan; “Study of the distribution of inguinal nodes around the femoral vessels and contouring of inguinal nodes.” J Cancer Res Ther, (2015) july-sep; 11 (3):575-579
• Niharika, Shamsunder, Geeta S. Narayanan, Manjunath N; “Unusual metastatic presentation of carcinoma hypopharynx- a case report” Journal of cancer research and therapeutics Cancer Res Ther (2015), july-sep, 11 (3):666-668
• S. Sowmya Narayanan, K. G. Megala Devi, Geeta S. Narayanan, Bhaskar V, “Image-based high dose rate brachytherapy for carcinoma cervix” Journal of Medical Physics Abstract No. 12004302 (2012)
• K. G. Megala Devi, S. Sowmya Narayanan, Geeta S. Narayanan, Majo V.J; “Consistencies in quality assurance of the on-board imager” Journal of Medical Physics, Abstract No. 12006501 (2012)
• S. Sowmya Narayanan, K. G. Megala Devi, Geeta S. Narayanan; “In house quality assurance program for treatment planning system” Journal of Medical Physics, Abstract No. 12004301 (2012)
• S Sowmya Narayanan, Geeta S. Narayanan; “Treatment verification in Intensity Modulated Radiation therapy” Radiotherapy & Oncology, Volume 99, Supplement 1(2011)
• S Sowmya Narayanan, Kavi Arasu and Geeta S. Narayanan; “QUALITY ASSURANCE OF ENHANCED DYNAMIC WEDGE (EDW) USING ELECTRONIC PORTAL IMAGING DEVICE (EPID) presented at 10th BIENNIAL ESTRO Conference on physics and radiation technology for clinical radiotherapy Maastricht, Netherlands; Radiotherapy & Oncology, Volume 92 Supplement 1 (2009)
• Geeta S Narayanan, T.K. Padmanabhan, K. Pavithran, V. Sudhir, Moni Abraham Kuriakose, and Subramaniam Iyer, Comparison of acute toxicities of two chemotherapy schedules used for Head&Neck cancers. J Cancer Res Ther 2006 Jul-Sep;2(3):100-4.
• Mahatshetty UM, Palled SR, Engineer R, Homkar G, Shrivastava SK, Shukla PJ, Adjuvant Radiation Therapy in gall bladder cancers: 10 years experience in Tata Memorial Hospital. J Cancer Res Ther. 2006 Apr-Jun;2(2):52-6.
• S. Narayanan, Sherly Saju, Geeta Narayanan, Rajiv Sarin, Rakesh Jalali, D.D. Deshpande, S.K. Srivastava, K.A. Dinshaw, Pattern of Dose Prescription in Chest Wall Irradiation; Journal of Medical Physics, 27, 3: 125-127 (2002).