Rijin Nellinilkumthadathil Thankachan

• Full-time Employment: Requires a commitment of at least 48 hours per week, indicating a significant dedication to the role.
• Patient Treatment Planning and Safety: Involves various responsibilities such as planning and checking radiotherapy treatments, ensuring patient and staff safety in a hazardous environment, and managing equipment effectively.
• Departmental Leadership: Develops and leads initiatives to optimize resources and provide patient analytics within the Radiotherapy Physics Department.
• Scientific and Technical Advice: Provides expertise to various stakeholders on radiotherapy equipment, treatment procedures, and simulation, with a focus on complex cases where accuracy impacts outcomes.
• Liaison with Equipment Manufacturers: Communicates directly with manufacturers to ensure equipment utilization and maintenance, facilitating customization and upgrades.
• Continuous Professional Development: Stays updated on scientific, clinical, and managerial developments relevant to radiotherapy practice and statutory requirements.
• Policy Interpretation and Development: Uses scientific judgment to interpret and develop policies when guidance is lacking.
• Quality Assurance: Ensures treatment plans meet standards, maintains safe equipment use, and complies with regulatory requirements.
• Compliance and Improvement: Implements and enhances procedures to improve efficiency and effectiveness, ensuring compliance with regulatory standards.
• Health and Safety: Performs all duties in accordance with relevant laws, regulations, and codes of conduct, prioritizing health and safety.

• PhD in Radiation Physics from JAIN University, [Submitted, Awaiting Defence]
• Specialization in Radiation Physics.

Conferences attended.

• Impact of Nuclear Reactions on GaN-HEMT 2D Dosimetry used I Proton & Carbon Therapy, Poster Presentation at 25th International conference on AMPI: Association of Medical Physicist in India. ( Medical Physicist International. Journal, Vol 11, No. 2, 2023, Abstract id: U5615, Presentation Id: P-195).
• Doping Effects of Alpha Induced Nuclear reactions on GaN-HEMT devices, Poster Presentation at 67th Symposium on Nuclear Physics, SNP-2023- Dec 9-13 at IIT-Indore. http://sympnp.org/proceedings/67/

Publications

• The Effect of Geometry Department Chamber Spatial Response Function in Small Field Profile Measurements.
• Novel insights into GaN-HEMT behavior under multi-particle irradiation.
• Nuclear reaction transmutation doping in GaN-HEMT MOSFETs.
• Identification of Low energy Charged Particle with LiF-Si Hybrid Detectors.
• A hybrid CF Ion Source for Low Energy Application.
• Neutron Spectroscopy in High Gamma Background using Solid state Nuclear Track Detectors.
• Impact of nuclear reactions on proton therapy dose distribution.

• Full-time employment and need to work a minimum of 48 Hours per week.
• Teaching Medical Physics students.
• Assist full professors, guide and supervise graduates, and spend time conducting investigations and studies.
• Research oriented works are included and lab conducted in M.Sc students. Familiarized with radiotherapy machines including Cock croft-Walton, Co-60 Source and Americium–beryllium (Am-Be)- Neutron Source.
• Developed and delivered comprehensive radiotherapy education programs
• Conducted interactive workshops for hands-on learning experiences
• Utilized case studies to illustrate real-world applications
• Encouraged critical thinking and decision-making skills
• Participated in professional development workshops
• Adapted teaching style to diverse learning needs

• Full-time employment and need to work a minimum of 48 Hours per week.
• Directly involved in performing treatment planning and its independent verification. Treatment planning techniques include 3D-CRT, and 2D.
• Perform calculations and measurements necessary for the accurate planning and treatment of patients for Radiotherapy using external beams.
• Perform calibration, and quality control of on-treatment imaging equipment and work with Radiotherapy staff to optimize, improve and help to troubleshoot imaging for treatment assessment.
• To guide radiotherapists during the preparation of immobilization devices in mould room and accurate patient positioning with marking, during simulation.
• To perform the calculations and measurements of teletherapy cobalt sources required for the treatments of patients.
• Assisted with the survey of radiotherapy installations and ensure the safety of the general public.
• Involved in designing and conducting periodic QA (daily, monthly, annual) for the Tele Cobalt machines.
• Adequate expertise in handling the dosimetric equipment of the department and its associated software.
• Implemented Routine Quality Assurance programmers. Daily, Weekly, Monthly and Yearly QA's
• Handling e-Lora for Administrative and Legislative works.
• Security plans applicable to a radiation facility, Emergency plans and mock drills for safety awareness.
• Treatment Planning Using Planning station and Manual Patient treatment planning.

• Full-time employment and need to work a minimum of 48 Hours per week.
• Guided radiotherapists during the preparation of immobilization devices in mould room and accurate patient positioning with marking, during simulation.
• Adequate expertise in handling the dosimetric equipment of the department and its associated software. The department is equipped with a ia cylindrical radiation field analyzer,0.6cc Farmer type ionization chamber, iba electrometer, TPR 20/10 water phantom & solid water phantom, H-Matrix, and Arc- Check- for Patient Specific QA .
• Responsible for ensuring the safe user of radiotherapy as well as radio diagnostic equipment in compliance with the regulatory aspects put forward by the national regulatory body (AERB) and maintaining all the records regarding safety status and radiation survey results of the facility as well as furnishing the employer and regulatory authority with the same.
• Responsible for making sure that every radiation worker is provided with a personal monitoring device (TLD) and uses it regularly, periodic assessment of the same, and keeping personal dose records.
• Perform possible repair of the machine (Elekta Linear Accelerator) by telephonic communication with the service engineer from the vendor and keeping all the records of every work order and maintenance work conducted on the machine. Held the responsibility of explaining the safety status of the facility to the regulatory body (AERB) during the remote regulatory inspection of our institution.
• Advise clinical staff on the effects of various treatment plan options on patient dose distributions. Discuss and agree on approaches with clinical staff to create optimal treatment plans and advise on aspects of the treatment and patient setup, as required.
• Re-plan treatment patients where required, following a treatment error or changes in patient shape. Use judgment to analyze and determine the most appropriate compensation method with the consultation of a Radiation Oncologist. Calculate the compensation required using patient patient dose.
• Provide routine support for Physics dosimetry and quality control in radiotherapy and brachytherapy according to established protocols. Undertake dosimetry measurements to a high degree of accuracy with suitable equipment. Perform quality control and other measurements and procedures on highly-complex, patient-critical equipment.
• Keep a view and validates the patient setup position performed by the technologist to ensure that it complies with the reference CT image. The Patient setup position is verified using EPID imaging modality. Variation in the setup which emerges due to changes in patient anatomy or tumor regression is noted, evaluated, and conveyed to the clinical oncologist. Case conferences are done to decide on an adaptive plan with the clinical oncologist.