Patent ID: 8790234
Filing Date: 2014-07-29
Classification: A61N

Abstract:
1. An HDR brachytherapy system comprising: a detector array having a plurality of detectors; a catheter through which a radioactive source can be moved by an afterloader to irradiate tissue at one or more dwell positions set out in a treatment plan; an intracavity probe, said intracavity probe comprising a holder and an outer sheath into which said holder may be inserted, wherein: said holder comprises a plurality of smaller bores into each of which said catheter may be inserted and a further larger bore into which said detector array may be inserted, the probe being configured:(i) so that said plurality of smaller bores surround said larger bore, and (ii) to hold said catheter and said detector array in a predetermined positional relationship to one another when said catheter has been inserted into at least one of said smaller bores and said detector array has been inserted into said larger bore, and wherein said outer sheath includes a plurality of independently expandable chambers which provide a space between the outer sheath and a peripheral surface of the holder when expanded; and means for measuring radiation detected by the detector array when the source is in said one or more dwell positions.