Evaluation of the Eclipse eMC algorithm for bolus electron conformal therapy using a standard verification dataset.

Evaluation of the Eclipse eMC algorithm for bolus electron conformal therapy using a standard verification dataset.
J Appl Clin Med Phys. 2016;17(3):5885
Authors: Carver RL, Sprunger CP, Hogstrom KR, Popple RA, Antolak JA
Abstract
 The purpose of this study was to evaluate the accuracy and calculation speed of electron dose distributions calculated by the Eclipse electron Monte Carlo (eMC) algorithm for use with bolus electron conformal therapy (ECT). The recent com-mercial availability of bolus ECT technology requires further validation of the eMC dose calculation algorithm. eMC-calculated electron dose distributions for bolus ECT have been compared to previously measured TLD-dose points throughout patient-based cylindrical phantoms (retromolar trigone and nose), whose axial cross sections were based on the mid-PTV (planning treatment volume) CT anatomy. The phantoms consisted of SR4 muscle substitute, SR4 bone substitute, and air. The treatment plans were imported into the Eclipse treatment planning system, and electron dose distributions calculated using 1% and < 0.2% statistical uncertainties. The accuracy of the dose calculations using moderate smoothing and no smooth-ing were evaluated. Dose differences (eMC-calculated less measured dose) were evaluated in terms of absolute dose difference, where 100% equals the given dose, as well as distance to agreement (DTA). Dose calculations were also evaluated for calculation spe...

Source: Journal of Applied Clinical Medical Physics - May 15, 2016 Category: Physics Authors: Carver RL, Sprunger CP, Hogstrom KR, Popple RA, Antolak JA Tags: J Appl Clin Med Phys Source Type: research