Nuclear Medicine

Table of Contents

V/Q Scans

Source: Yazdani M, Lau CT, Lempel JK, et al. Historical Evolution of Imaging Techniques for the Evaluation of Pulmonary Embolism. Radiographics. 2015;35(4):1245-1262. doi:10.1148/rg.2015140280

NucMedResource: Interpreting VQ scans

Lung Segments


Gallium normal biodistribution

WBC scan normal biodistribution


NucMedResource: HIDA Scan

“The hallmark of acute cholecystitis (acalculous as well as calculous) is persistent gallbladder nonvisualization after 3–4 h of passive imaging or 30 min after morphine administration. A pericholecystic hepatic band of increased activity (rim sign) is a sign of severe late-stage acute cholecystitis and has been associated with severe phlegmonous or gangrenous acute cholecystitis, a surgical emergency.”

Rim sign