Kilovoltage rotational external beam radiotherapy on a breast computed tomography platform: a feasibility study.

ABSTRACT:

Purpose

To demonstrate the feasibility of a dedicated breast computed tomography (bCT) platform to deliver rotational kilovoltage (kV) external beam radiotherapy (RT) for partial breast irradiation, whole breast irradiation, and dose painting.

Methods and materials

Rotational kV-external beam RT using the geometry of a prototype bCT platform was evaluated using a Monte Carlo simulator. A point source emitting 178 keV photons (approximating a 320-kVp spectrum with 4-mm copper filtration) was rotated around a 14-cm voxelized polyethylene disk (0.1 cm tall) or cylinder (9 cm tall) to simulate primary and primary plus scattered photon interactions, respectively. Simulations were also performed using voxelized bCT patient images. Beam collimation was varied in the x-y plane (1-14

SUBMITTER: Prionas ND 

PROVIDER: S-EPMC3397279 | biostudies-literature | 2012 Oct

REPOSITORIES: biostudies-literature