What is the best explanation of stereotactic radiosurgery?

What is the best explanation of stereotactic radiosurgery?

• A. Radioactive seeds are implanted in the brain.
• B. Very precisely focused radiation destroys tumor cells.
• C. Tubes are placed to redirect CSF from one area to another.
• D. The cranium is opened with removal of a bone flap to open the dura.

Answer: (B)

Stereotactic radiosurgery is a noninvasive approach that uses precise imaging and targeting to deliver a highly focused beam of radiation to a brain lesion, aiming to destroy tumor cells while minimizing damage to surrounding tissue. This concentrated radiation can be given in a single session or a few fractions, and there are no incisions or implanted seeds involved. The best explanation is that very precisely focused radiation destroys tumor cells. The other options describe invasive procedures or implants (radioactive seeds, CSF shunt, craniotomy) that are not part of stereotactic radiosurgery.

Stereotactic radiosurgery is a noninvasive approach that uses precise imaging and targeting to deliver a highly focused beam of radiation to a brain lesion, aiming to destroy tumor cells while minimizing damage to surrounding tissue. This concentrated radiation can be given in a single session or a few fractions, and there are no incisions or implanted seeds involved. The best explanation is that very precisely focused radiation destroys tumor cells. The other options describe invasive procedures or implants (radioactive seeds, CSF shunt, craniotomy) that are not part of stereotactic radiosurgery.