Conventional Nuclear Medicine in the Evaluation of Gastrointestinal and Genitourinary Tract Disorders
Conventional nuclear medicine investigations of the gastrointestinal (GI) tract are not commonly performed in routine clinical practice, although prevalence of disorders affecting the upper gastrointestinal tract is quite high ranging from 15% to 40% in European countries. Most diagnostic tests used to differentiate organic from nonorganic cause are invasive (endoscopy, manometry, pH monitoring) and may be not well tolerated by some patients. Radionuclide procedures are non-invasive and allow characterizing functional and motility abnormalities of the esophagus and stomach. They are easy to perform, widely available and deliver low radiation burden to the patient at low cost. Despite the lack of standardization, both esophageal transit studies and gastric emptying scintigraphy have shown excellent diagnostic results and are helpful complementary tools for the clinician at diagnosis and/or follow-up after surgery or conservative management.
KeywordsBiliary Atresia Acute Tubular Necrosis Effective Renal Plasma Flow Hepatobiliary Scintigraphy Heterotopic Gastric Mucosa
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