Dosimetric comparison of iPlan Pencil Beam (PB) and Monte Carlo (MC) algorithms in stereotactic radiosurgery/radiotherapy (SRS/SRT) plans of intracranial arteriovenous malformations.

Stereotactic radiosurgery/radiotherapy (SRS/SRT) is a hypofractionated treatment where accurate dose calculation is of prime importance. The accuracy of the dose calculation depends on the treatment planning algorithm. This study is a retrospective dosimetric comparison of iPlan Monte Carlo (MC) and Pencil Beam (PB) algorithms in SRS/SRT plans of cranial arteriovenous malformations (AVMs).

The impact of patient positioning and use of belly board on small bowel toxicity in patients receiving pelvic radiotherapy for gynecological malignancies.

Aim: To determine the efficacy of belly board device in patients receiving postoperative radiation for gynecological malignancies in terms of setup error and acute small bowel toxicity.

Materials And Methods: Patients requiring postoperative radiation for gynecological malignancies were prospectively randomized to either treatment with supine position (supine arm) or prone position using belly board (prone arm). Each patient underwent computed tomography simulation in the assigned treatment position, and a three-dimensional conformal radiation was planned.