Feasibility of spine stereotactic body radiotherapy for patients with large tumors in multiple vertebrae undergoing re-irradiation: Dosimetric challenge using 3 different beam delivery techniques

The objective of the present study was to report whether the adequate spine stereotactic body radiotherapy (SBRT) plans were generated with feasible treatment duration for patients with large vertebral metastases undergoing re-irradiation. For 5 cases, the re-irradiation plans using static-field intensity-modulated radiation therapy (SIMRT), volumetric-modulated arc therapy (VMAT), and CyberKnife with a total prescribed dose (PD) of 24 Gy applied in 2 fractions were generated. A minimum dose to 95% of the evaluated planning target volume (PTVevl) that was>70% of PD (D95> 70% PD) was defined as minimum criterion.
Source: Medical Dosimetry - Category: Radiology Authors: Source Type: research