Abstract: Systems and methods for low energy radiation x-ray radiation therapy system for use at a target within a cavity of a subject. In an aspect, the system uses an aperture shaping device used to shape the radiation beam from the low energy radiation source. In an aspect, the aperture shaping device includes a plurality of leaf assemblies which include leaves configured to form the aperture and engage the radiation beam. In an aspect, the present invention utilizes a geared mechanics approach to create an aperture using only one dial input. The design ensures that the field size of the collimator remains a constant shape as it is opened and closed. In an aspect, the overall size of the collimator may be scaled to accommodate various radiation therapy requirements.

Abstract: A real-time applicator position monitoring system (RAPS) measures brachytherapy applicator displacement in real-time by computing the relative displacement between two infrared reflective targets, one attached to the applicator and the other to the patient's skin. In an aspect, RAPS can be used with any brachytherapy application. RAPS measures the applicator motion during HDR brachytherapy treatment, as well as during the transfer of the patient from the imaging room (e.g., where the CT and MR scanners are located) to the HDR BT operating/treatment room.

Abstract: Systems and methods for low energy radiation x-ray radiation therapy system for use at a target within a cavity of a subject. In an aspect, the system uses an aperture shaping device used to shape the radiation beam from the low energy radiation source. In an aspect, the aperture shaping device includes a plurality of leaf assemblies which include leaves configured to form the aperture and engage the radiation beam. In an aspect, the present invention utilizes a geared mechanics approach to create an aperture using only one dial input. The design ensures that the field size of the collimator remains a constant shape as it is opened and closed. In an aspect, the overall size of the collimator may be scaled to accommodate various radiation therapy requirements.

Abstract: A real-time applicator position monitoring system (RAPS) measures brachytherapy applicator displacement in real-time by computing the relative displacement between two infrared reflective targets, one attached to the applicator and the other to the patient's skin. In an aspect, RAPS can be used with any brachytherapy application. RAPS measures the applicator motion during HDR brachytherapy treatment, as well as during the transfer of the patient from the imaging room (e.g., where the CT and MR scanners are located) to the HDR BT operating/treatment room.