| abstract |
A brachytherapy system for a target region ( 200 ) can include an applicator ( 100 ) having a plurality of channels ( 110 ) that are hollow where the applicator is implanted in the target region, a tracking device ( 175 ), a tracking signal generator ( 180 ) to generate a signal received by the tracking device, and a processor ( 550 ). The tracking device can have a size and shape to be advanced and retracted through at least a portion of the plurality of channels. The processor can determine a position of one or more of the plurality of channels based on a movement of the tracking device. The processor can determine the location of the plurality of channels in the images based on the position measurements from the tracking device. |