text: When you were injected with the isotope, it goes into your blood stream and is processed through the kidneys-- what they are looking for is any abnormal uptake in your bones- spine, pelvis, extremities.  I'm not sure about the soft tissue unless there was infiltration at the injection site.  I assume you read the report off your chart- ask your doctor who ordered the scan to explain EVERYTHING TO YOU.  Only he can tell you what is abnormal....dont lose sleep....