Treatment planning and dosimetric comparison study on two different volumetric modulated arc therapy delivery techniques

Abstract

The study concludes that a variable gantry speed with variable dose rate is important for efficient arc therapy delivery. RapidArc presents a slight improvement in the OAR sparing with better target coverage when compared to Elekta VMAT. Trivial differences were noted in all the plans for organ at risk but the two techniques provided satisfactory conformal avoidance and conformation.

External beam radiotherapy plus single-fraction high dose rate brachytherapy in the treatment of locally advanced prostate cancer

“…From 2002 to July 2012, 377 patients (pts) with a diagnosis of intermediate or highrisk prostate cancer were treated with EBRT and 192 Ir HDRB as a boost. In most cases, external radiation was delivered by 3D-RT, although a small percentage of patients were treated by volumetric modulated arc therapy (VMAT), which was implemented in our centre in the year 2010 [15]. Median patient age was 66 years (range, 41-86 years).…”

How to compare treatment plans? Personalized perspective

“…In conclusion, we appreciate the work of Kumar et al 1 as a classical solution of the comparison problem. On the basis of their work, we tried to highlight that even a simple evaluation must have well-defined criteria and should be supported by advanced statistical tests.…”

Rectal protection in prostate stereotactic radiotherapy: a retrospective exploratory analysis of two rectal displacement devices

“…Further limitations of note include hardware and software discrepancies between the centres, for example differences in specifications of the linear accelerators or the known difference in the dosimetric coverage achieved by alternative planning software. 23 We feel that these concerns were at least partially managed through the sequential analysis approach where broader comparisons were only made after dosimetric differences between the RDD's had been noted between patient groups solely managed at centre 1, with the data from centre 2 adding further support to the analysis.…”