Discussion
A small, well-defined intracranial tumor is treated with high-dose radiation delivered precisely from multiple angles in a single session. Which modality is being used ?
Answer: C
The modality is stereotactic radiosurgery.
Stereotactic radiosurgery delivers a single high dose to a small, sharply defined target. Many beams converge from different angles under stereotactic localisation, using a frame or image guidance, so the dose outside the target falls off steeply. The Gamma Knife and linac-based radiosurgery are examples.
Conventional external beam radiotherapy is normally given in many fractions over weeks. Brachytherapy places sources inside the tumour. Proton therapy is a particle type that can be used in several schedules, and the single-session multi-angle description defines radiosurgery.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development