Nuclear medicine tests for acute gastrointestinal conditions

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Acute cholecystitis (AC) and lower-gastrointestinal (GI) bleeding are 2 emergencies commonly encountered in nuclear medicine. Evidence of AC on hepatobiliary scintigraphy (HBS) allows for confident diagnosis and provides support for definitive surgical treatment. Proper patient preparation is essential for HBS including fasting and the use of pharmacologic adjuncts is sometimes required. Pharmacologic adjuncts may also be administered during HBS to shorten the length of the examination and increase its specificity. In the interpretation of HBS, there are several sources of false-positive results to be aware of, most commonly chronic cholecystitis. False-negative results on HBS are usually the result of mistaking another structure, such as a dilated cystic duct, for the gallbladder. Abdominal ultrasound is the appropriate initial test in patients with suspected AC, but HBS is an excellent second tier test for the diagnosis of AC in the work-up of indeterminate cases by sonography. GI bleeding scintigraphy plays an important role in the evaluation and management of patients with acute lower-GI bleeding. Scintigraphy serves to localize sites of active GI bleeding and stratify those patients who would benefit from aggressive treatment (surgery or arteriography) vs those who can be managed medically. Pretest involvement of respective services is critical for successful bleeding site confirmation and therapy by interventional radiology or surgery or both. Single photon emission computed tomography/computed tomography erythrocyte scintigraphy has demonstrated superior accuracy and precision over planar scintigraphy in the diagnosis of acute GI bleeding. Additionally, single photon emission computed tomography/computed tomography scintigraphy of GI bleeding provides useful supplemental anatomical information that benefits patient management.

Original languageEnglish (US)
Pages (from-to)88-101
Number of pages14
JournalSeminars in Nuclear Medicine
Volume43
Issue number2
DOIs
StatePublished - Mar 1 2013

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Nuclear Medicine
Radionuclide Imaging
Acute Cholecystitis
Hemorrhage
Cystic Duct
Interventional Radiology
Cholecystitis
Gallbladder
Fasting
Ultrasonography
Catalytic Domain
Angiography
Emergencies
Therapeutics
Erythrocytes

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

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Nuclear medicine tests for acute gastrointestinal conditions. / Allen, Thomas W.; Tulchinsky, Mark.

In: Seminars in Nuclear Medicine, Vol. 43, No. 2, 01.03.2013, p. 88-101.

Research output: Contribution to journalArticle

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