Real-time verification obturator in gamma guided stereotactic position specific

摘要

A combination rigid imager and obturator for real-time localization of a region of interest during the performance of a surgical procedure that includes: a) a rigid imaging grid preferably made up of an array of gamma radiation position sensitive photomultipliers; and b) an obturator inserted through the rigid imaging grid into a mass containing a region of interest and including: 1) an outer tube having a first closed end and a distal open end; and 2) an inner tube having an inserted end that includes a radioactive tracer and a remote end inserted into the distal open end; wherein the first closed end is inserted into the mass containing a region of interest and the radioactive source provides a marker for the region of interest during the performance of a surgical procedure.