Design and validation of a minibeam treatment delivery system for use with a radiation therapy research platform.

Minibeam radiation therapy (MBRT) is a promising treatment technique in the early stages of clinical use. In this work, two hexagonal minibeam collimators were designed, fabricated, and validated using film measurements and Monte Carlo simulations. Film and Monte Carlo results demonstrated strong agreement, with the greatest agreement near the beam central axis. One of the previously validated MBRT collimators was then modified to allow for dose calculations on a mouse cone beam computed tomography (CBCT) dataset, and a MBRT dose distribution was preserved in the animal dataset. This validated system can be used in future cell and small animal studies to further explore MBRT in a preclinical setting.