Alan H. Maurer

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This consensus statement from the members of the American Neurogastroenterology and Motility Society and the Society of Nuclear Medicine recommends a standardized method for measuring gastric emptying (GE) by scintigraphy. A low-fat, egg-white meal with imaging at 0, 1, 2, and 4 h after meal ingestion, as described by a published multicenter protocol,(More)
BACKGROUND Disorders of gastrointestinal (GI) transit and motility are common, and cause either delayed or accelerated transit through the stomach, small intestine or colon, and affect one or more regions. Assessment of regional and/or whole gut transit times can provide direct measurements and diagnostic information to explain the cause of symptoms, and(More)
Early comparisons between PET and SPECT imaging of the brain, therefore, confirm that SPECT is capable of revealing information about regional brain function and metabolism at a much lower cost and degree of complexity. While PET will continue to play a leading role in research, SPECT imaging will increasingly be used clinically to evaluate functional(More)
BACKGROUND Cholinergic regulation of chronotropic (frequency) and inotropic (force) aspects of antral contractility and how these impact on gastric emptying are not well delineated. AIMS To determine the effects of cholinergic stimulation and inhibition on myoelectric, contractile, and emptying parameters of gastric motility. METHODS Ten normal subjects(More)
Single-photon emission computed tomography (SPECT) with 99mTc-hexamethylpropyleneamine oxime (HMPAO) was used to investigate changes in cerebral blood flow in seven patients with cortical visual impairment. Traumatic brain injury (TBI) was the cause of cortical damage in two patients, cerebral ischemia in two patients and carbon monoxide (CO) poisoning,(More)
Gastric emptying of digestible solids occurs after trituration of food particles. Non-digestible solids are thought to empty with phase III of the migrating motor complex (MMC). The aim of this study was to determine if a non-digestible capsule given with a meal empties from the stomach with return of the fasting phase III MMC or during the fed pattern with(More)
BACKGROUND The effect of histamine H2 receptor antagonists on gastric emptying is controversial. AIMS To determine the effects of ranitidine, famotidine, and omeprazole on gastric motility and emptying. PATIENTS AND METHODS Fifteen normal subjects underwent simultaneous antroduodenal manometry, electrogastrography (EGG), and gastric emptying with(More)
The purpose of this guideline is to assist nuclear medicine practitioners in recommending, performing, interpreting , and reporting the results of gastric-emptying and motility studies in adults. Radionuclide studies of gastric emptying and motility are the most comprehensive and physiologic studies of gastric motor function available. The studies are(More)
We have developed a new method for generating attenuation-corrected images for use in absolute volume and activity measurements. The technique relies on the use of a set of measured buildup factors to correct for the effects of scatter inherent in the broad-beam conditions of clinical nuclear medicine and requires anterior and posterior count-rate(More)
To characterize proximal and distal stomach emptying in functional dyspepsia (FD) and gastro-oesophageal reflux disease (GORD). Eighty-three patients underwent gastric emptying (GE) scintigraphy and symptom scoring for the evaluation of upper gastrointestinal symptoms and were divided into three groups: FD (n = 25), GORD (n = 20) and FD + GORD (n = 38).(More)