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Related Concept Videos

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

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

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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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Upper GI Series: Barium Swallow01:24

Upper GI Series: Barium Swallow

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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.
Purpose and Procedure
Patients undergoing this procedure ingest a liquid containing barium sulfate with a chalky...
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Assessment of the Rectum and Anus01:25

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Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
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Begin by inspecting the perianal and anal areas for color, texture, rashes,...
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Lower GI Series: Barium Enema01:23

Lower GI Series: Barium Enema

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A Barium Enema, or a lower GI series, is a specialized radiographic examination designed to visualize the lower gastrointestinal tract, specifically the colon and rectum. This procedure is instrumental in diagnosing various conditions such as colorectal cancer, polyps, diverticulosis, and inflammatory bowel disease.
Procedure Details
The examination begins by inserting a lubricated rectal tube into the patient's rectum to administer a radiopaque barium solution. The barium flow is carefully...
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Ultrasound II: Endoscopic Ultrasound and FibroScan01:25

Ultrasound II: Endoscopic Ultrasound and FibroScan

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Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):
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Ultrasonography01:17

Ultrasonography

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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
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Related Experiment Video

Updated: Jan 15, 2026

Author Spotlight: Point-of-Care Ultrasound for Gastric Content Assessment and Risk Stratification in Perioperative Care
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Author Spotlight: Point-of-Care Ultrasound for Gastric Content Assessment and Risk Stratification in Perioperative Care

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Echoes from Within: Mapping Gastrointestinal Obstruction with Ultrasound.

Lior Abramson1,2, Rebecca G Theophanous1,3, Brice Lefler1,2

  • 1Durham VA Medical Center, Durham, NC 27705, USA.

Diagnostics (Basel, Switzerland)
|October 16, 2025
PubMed
Summary

Point-of-care ultrasound (POCUS) offers a rapid, radiation-free method for evaluating abdominal distension. It aids in triaging and monitoring gastrointestinal obstructions like ileus and small bowel obstruction, complementing traditional imaging.

Keywords:
bowel ultrasoundgastric ultrasoundileuspneumoperitoneumpoint-of-care-ultrasoundsmall bowel obstruction

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Last Updated: Jan 15, 2026

Author Spotlight: Point-of-Care Ultrasound for Gastric Content Assessment and Risk Stratification in Perioperative Care
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Area of Science:

  • Gastroenterology
  • Medical Imaging
  • Emergency Medicine

Background:

  • Abdominal pain and distension necessitate rapid diagnosis of obstructive gastrointestinal (GI) pathologies.
  • Computed tomography (CT) is the current standard but involves cost, radiation, and transport delays.
  • Point-of-care ultrasound (POCUS) offers a portable, radiation-free alternative for initial assessment.

Purpose of the Study:

  • To review characteristic sonographic findings for distinguishing obstructive GI conditions.
  • To highlight practical techniques for integrating gastric and intestinal POCUS.
  • To improve diagnostic accuracy and expedite treatment for GI obstruction.

Main Methods:

  • Review of characteristic sonographic findings in GI obstructive pathologies.
  • Discussion of practical techniques for POCUS application in gastric and intestinal assessment.
  • Emphasis on serial POCUS examinations for monitoring disease progression or resolution.

Main Results:

  • POCUS provides insights into GI size and function, aiding in triage and monitoring.
  • Characteristic sonographic findings can help differentiate various obstructive GI conditions.
  • Serial POCUS allows for effective monitoring of treatment response and disease evolution.

Conclusions:

  • POCUS is a valuable tool for initial triage and monitoring of functional and mechanical GI obstructions.
  • While not replacing CT, POCUS enhances diagnostic accuracy and expedites treatment decisions.
  • Integrating POCUS into clinical workflows can improve patient care for abdominal distension.