Nuclear Scans

Question 1

What is a HIDA (Hepatobiliary) Scan?

Answer 1

only functional test of the biliary system that allows detection of Cholecystitis

Question 2

What is a bone scan used for?

Answer 2

Equal sensitivity to MRI for osteomyelitis: far less specific
Use as a sensitive test to detect occult metastases from cancer

Question 3

What is a Gallium Scan?

Answer 3

Fever of unknown origin: gallium follows Fe metabolism and is transported on Transferrin: increases in uptake in infection and some cancer

Question 4

What is an Indium scan used for?

Answer 4

Fever of Unknown origin: superior in assessing the abdomen which can be obscured in gallium: Indium is a tagged WBC scan to detect infection patients WBC are tagged then reinjected to see where they localize

Question 5

What is the use of a V/Q scan?

Answer 5

normal essentially excludes PE

Question 6

What is the use of a Multiple-Gated Acquisition Scan (MUGA)?

Answer 6

Nuclear ventriculography: most accurate test to measure ejection fraction

Question 7

What is the most accurate test to measure ejection fraction?

Answer 7

Multiple-Gated Acquisition Scan (MUGA)