SRS

The SRS Module consists of a stereotactic calibration cube phantom, leveling plate, and software.

The calibration cube is a single phantom solution that enables direct calibration to radiographic isocentre for daily quality assurance of imaging – including radiographic and surface imaging (CBCT, SGRT, MV, kV).

A 3-degree couch-top head adjuster is available as an optional add-on. The head adjuster allows for easy, precise correction of pitch, yaw and roll for cranial treatments, allowing adjustments to be made to within a tenth of a degree. This means that a 6 degrees of freedom couch is not required.

Open-face masks are less claustrophobic than frames or closed masks, allow continuous surface monitoring in real-time during setup and treatment, and enable easy dialogue with the clinical team during setup.

Click here to see a list of compatible masks that have been evaluated by Vision RT for use with AlignRT. (https://visionrt.com/vision-rt-compatible/)

The module enables a range of quality assurance tests – TG142 (linear accelerator) and TG147 (non-radiographic imaging).

Tests include: End-to-end localisation assessment, hidden target testing, localisation displacement accuracy, imaging coordinate coincidence across modalities, imaging positioning/repositioning, laser alignment, Winston-Lutz, couch rotation isocenter accuracy.

To deliver the accuracy required for SRS, both an open-face mask (supplied by various companies) and the SRS calibration cube (supplied by Vision RT) are required.