See an iRAI System in Action

First, the planned dose for the C-shaped treatment plan; next, the temporal dose accumulation in a phantom over the delivery time of around 19 seconds as continuously monitored by the ionizing radiation acoustic imaging (iRAI) system; last, the 60 and 80 percent isodose lines on the planned dose distribution and the iRAI-imaged relative dose distribution.

“In the future, we could use the imaging information to compensate for uncertainties that arise from positioning, organ motion and anatomical variation during radiation therapy,” said Wei Zhang , a research investigator in biomedical engineering and the study’s first author. “That would allow us to deliver the dose to the cancer tumor with pinpoint accuracy.”