X. Sidonia valas

Department of

X. Sidonia valas
Designation : M.Sc., Medical Physics., Medical Physicist & RSO
Area of Expertise : Medical Physics Division

RESPONSIBILITIES

  • Comissioning of treatment machines, simulators and treatment planning systems.
  • Calibration  and quality assurance on all treatment machines.
  • Performing patient specific quality assurance prior to treatment.
  • Performing Radiological Safety related work both for Patient and Radiation workers.
  • Taking care of Personal Monitoring services like TLD badge to the radiation workers as an RSO.
  • In Submitting Annual Reports to the Atomic Energy Regulatory Board (Govt.of India).
  • Helping to the Radiation Oncologist in contouring and delineation of CT images of Patients.
  • Treatment planning for the cancer patient using CT and Images and Evaluation of treatment plans.

 

EXPOSURE

  • Installation and commissioning experience with Elekta Synergy Image Guided     Radiotherapy (IGRT) linear accelerator with kV Cone beam Computed Tomography system in 2010.
  • Commissioning and clinical implementation experience with the CMS-Xio IMRT treatment planning system in 2010
  • Working experience of Siemens Primus (digital) Dual energy liner accelerator and its calibration  with Scanditronix Wellohfer Blue Phantom (RFA).
  • Calibration of Ir-192 in Nucletron microselectron HDR with Scanditronix Dose 1 Dosimeter.
  • Working experience in Nucletron treatment planning system 3D PLATO (sgi-fuel) and Oncentra Master Plan (virtual simulation) for planning 3D Conformal Radiotherapy using Customized blocks in High-energy photon Beams.
  • CT based 3D planning experience for HDR Brachytherapy.
  • 3D treatment planning systems such as PLATO (Sgi), ONCENTRA-virtual simulation.
  • High Dose Rate Brachytherapy using Ir-192 remote after-loader in planning and treating Intraluminal applications, Cervix, Prostate, Rectum Template applications, Breast, Penis, Tongue, Soft Palate and Soft tissue Sarcoma Implants,
  • Working experience as an RSO in the departments of Radiotherapy, Radio-diagnosis & Nuclear Medicine, which involves gadgets like siemens primus linear accelerator, microselectron HDR, siemens Emotion Duo CT, x-ray units, Gamma camera and PET-CT.

 

TRAINING EXPERIENCE

  • Clinical training in ‘Radiotherapy, Radio Diagnosis and Nuclear Medicine’ at VNCC, G. Kuppusamy Naidu Memorial Hospital, Coimbatore.
  • One week training in ‘Radiation Protection and Radiation Biology’ at IGCAR, Kalpakkam during Dec 2005.
  • Clinical training in ‘Radiotherapy, Radio Diagnosis and Treatment Planning’ at B. I. R & O, Govt General Hospital, Chennai during Feb & Mar 2006.

Two weeks training in ‘Radiation Hazards, Evaluation & Control and Quality Assurance in hospital environment’ at BARC, Mumbai during Mar 2006.

 

PAPERS  PUBLISHED IN INTERNATIONAL JOURNALS

  • Appasamy Murugan, Xavier Sidonia Valas, Kuppusamy Thayalan, Velayudham Ramasubramanian “Dosimetric evaluation of a three dimensional treatment planning system” in Journal Of Medical Physics, Vol:36, No:1, 15-21, 2011.
  • A.Murugan, K.Thayalan, V.Ramasubramanian, X.Sidonia Valas “Measurment of Transit time and dose of Ir-192 HDR brachytherapy stepping source using re-entrant chamber” in International Journal of Brachytherapy, Vol:7,  175, 2008.

 

PAPERS PRESENTED

  • “Measurement of Transit time of Ir-192 HDR Brachytherapy stepping source using re-entrant chamber” in 29th Annual conference of AROI in 29th Nov-2nd Dec 2007 at Chennai.
  • “Dosimetric evaluation of 3D Treatment Planning System” in National Conference on Medical Physics and Radiation Safety in Nov-2007 at Shrinagar.
  • “Comparison of beam data Measurement using ionization chamber and semiconductor detector for High Energy Photon Beams” in National Conference on Medical Physics and Radiation Safety in Nov-2007 at Shrinagar.
  • “Electron beam data measurement using semiconductor detector in a dual energy linear accelerator” in State Annual Conference on Medical Physics and Radiation Safety in Aug-2007 at Kancheepuram Regional Cancer Centre, Kancheepuram.
  • ‘Comparison of Point A and Point H in Gynecological Malignancies using HDR Brachytherapy’ at XI Annual conference on Medical Physics & Radiation Safety, organized by Association of Medical Physicists in India( TN & Pondicherry Chapter) at V. I. T, Vellore in Sep-2006.

 

CONFERENCES & WORKSHOPS ATTENDED

  • Annual conference on Medical Physics & Radiation Safety, organized by Association of Medical Physicists in India( TN & Pondicherry Chapter) at G.K.N.M Hospital, Coimbatore at August 2010.
  • 24th AROI  State conference organized by Association of Radiation Oncologists of India at Dr.Kamakshi Memorial Hospital at Oct 2009.
  • Annual conference on Medical Physics & Radiation Safety, organized by Association of Medical Physicists in India( TN & Pondicherry Chapter) at Bilroth Hospitals at Sep 2009.
  • ESTRO endorsed course on ‘Dose Calculation and Verification for External Beam Therapy’ at Apollo Gleneagles Hospitals and Science city , Kolkata, India from Jan 29th to Feb 1st 2009.
  • State Annual Conference on Medical Physics and Radiation Safety in Aug-2007 at Kancheepuram Regional Cancer Centre, Kancheepuram.
  • Brachytherapy Workshop conducted by Indian Brachytherapy Society, Madurai Meenakshi Mission Hospital, Madurai in Jan-2007
  • XI Annual conference on Medical Physics & Radiation Safety, organized by Association of Medical Physicists in India( TN & Pondicherry Chapter) at Shanmuga Hospitals, Salem – Sep 2004.
  • International conference – XXVI Annual conference organized by Association of Medical Physicists in India at Chennai during Nov 2005.
  • Annual conference on Medical Physics & Radiation Safety, organized by Association of Medical Physicists in India( TN & Pondicherry Chapter) at V. I. T, Vellore during Sep 2006.

 

CONFERENCES/WORKSHOPS ORGANIZED

Organized  a “National Workshop on Calibration of Hdr Brachytherapy Source” at Dr.Kamakshi Memorial Hospital in association with the Indian Brachytherapy Society on September 5 – 6, 2008.