Nuclear Tracing and Other Bizarro Events

Just now, in the surgical center, a kind and knowledgeable nurse walked into Janet's room with a greenish metal box that looked like it came from WWII.  It was marked "NUCLEAR."  Yes it was.  She explained that many people are allergic to dye that is commonly used in the sentinel node testing procedure.  So, Janet will have a nuclear tracer injected and then the medical professionals will use a GEIGER COUNTER to locate the sentinel node. How cool!