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Related Concept Videos

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

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This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and...
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Gastric emptying occurs when the stomach gradually releases chyme into the duodenum. When the stomach is distended, it triggers the release of gastrin, a hormone that promotes gastric acid secretion to aid in digestion. Additionally, stomach distension contributes to peristaltic waves that propel gastric contents toward the pyloric region. The gastroenteric reflex, on the other hand, primarily stimulates peristalsis in the intestines, facilitating the movement of contents further along the...
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Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

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Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
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Upper GI Series: Barium Swallow01:24

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The Barium Swallow Study, or a Barium Esophagogram, is a diagnostic imaging method used to visualize the upper gastrointestinal (GI) tract, including the esophagus, stomach, and small intestine. It employs barium sulfate, a radiopaque contrast material, to provide clear images of the upper digestive system, helping to identify abnormalities, diseases, or structural issues.
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Endoscopic Procedures I: Esophagogastroduodenoscopy01:29

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An Esophagogastroduodenoscopy (EGD) is a diagnostic procedure in which an endoscopist uses a flexible, lighted endoscope to visualize the upper gastrointestinal (GI) tract. The procedure includes visualizing the oropharynx, esophagus, stomach, and the first part of the small intestine, the duodenum.
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Endoscopic Procedures III: Video Capsule Endoscopy01:28

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Capsule endoscopy, or wireless or video capsule endoscopy, is a diagnostic procedure for examining the entire gastrointestinal tract. Patients swallow a capsule about the size of a vitamin tablet. The capsule is equipped with a transmitter, a battery, an LED light source, and a color video camera to capture images throughout the gastrointestinal tract. This procedure is particularly useful for diagnosing conditions such as Crohn's disease, ulcerative colitis, tumors, polyps, ulcers,...
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Related Experiment Video

Updated: Mar 1, 2026

Author Spotlight: Point-of-Care Ultrasound for Gastric Content Assessment and Risk Stratification in Perioperative Care
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Development of a Protocol for Dynamic Gastric Emptying Scintigraphy.

Tatsuya Tsuchitani1,2, Kazuhiro Kitajima3, Tatsuro Nakamura4

  • 1Department of Radiological Technology, Hyogo Medical University, Hyogo, Japan.

In Vivo (Athens, Greece)
|February 27, 2026
PubMed
Summary

A new dynamic gastric emptying (GE) scintigraphy protocol was developed to quantitatively assess residual gastric motility in patients after gastrectomy. This method provides a novel way to evaluate gastric function post-surgery.

Keywords:
Protocol constructiondynamic acquisitiongastrectomygastric emptying scintigraphy

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Area of Science:

  • Gastroenterology
  • Nuclear Medicine
  • Surgical Oncology

Background:

  • Gastric emptying (GE) scintigraphy is a valuable noninvasive tool for evaluating gastric accommodation and emptying.
  • Dynamic acquisition in GE scintigraphy allows for continuous imaging over time, enabling detailed functional assessment.
  • Quantitative evaluation of residual gastric motility is crucial in post-gastrectomy patients.

Purpose of the Study:

  • To establish a protocol for dynamic GE scintigraphy.
  • To quantitatively assess residual gastric motility function in post-gastrectomy patients using dynamic imaging.

Main Methods:

  • Preliminary analysis of four healthy volunteers to optimize examination protocols (acquisition direction, timing, duration).
  • Clinical analysis of 14 post-gastrectomy patients using the established dynamic GE scintigraphy protocol.
  • Calculation of key indices: Tpeak, T1/2, lag phase, and gastric peristaltic frequency.

Main Results:

  • Established parameters for dynamic GE scintigraphy protocol development.
  • Calculated Tpeak (7.9±3.8 min), T1/2 (52.3±19.2 min), and lag phase (4.5±2.5 min).
  • Gastric peristaltic frequency showed consistency across major and minor axes without significant differences.

Conclusions:

  • A novel dynamic GE scintigraphy protocol has been successfully established.
  • This protocol enables quantitative assessment of residual gastric motility in post-gastrectomy patients.
  • The method offers a new approach for evaluating gastric function after gastrectomy.