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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.
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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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Lower GI Series: Barium Enema01:23

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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.
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Imaging Studies I: CT and MRI01:14

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Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
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Imaging Studies VI: Voiding Cystourethrography and Cystography01:22

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Voiding Cystourethrography (VCUG) and Cystography are specialized radiographic procedures used to examine the structure and function of the bladder and urethra.Voiding Cystourethrography (VCUG)A Voiding Cystourethrogram (VCUG) is a diagnostic imaging procedure that assesses the anatomy and function of the lower urinary tract. It focuses on the bladder, bladder neck, and urethra, helping detect abnormalities such as vesicoureteral reflux (VUR)—the backward or reverse flow of urine into the...
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Appendicitis-II: Diagnostic Studies and Management01:29

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Updated: Oct 26, 2025

Multimodality Diagnosis of Mesenteric Ischemia
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Imaging Modalities for Evaluation of Intestinal Obstruction.

David W Nelms1, Brian R Kann1

  • 1Department of Colon and Rectal Surgery, Ochsner Medical Center, New Orleans, Louisiana.

Clinics in Colon and Rectal Surgery
|July 26, 2021
PubMed
Summary
This summary is machine-generated.

Understanding bowel obstructions is crucial for surgeons. Computed tomography is the most accurate imaging method for diagnosing small and large bowel obstructions, requiring a systematic interpretation approach.

Keywords:
abdominal radiographybowel obstructioncomputed tomographycontrast enemaimaginglarge bowel obstructionmagnetic resonance imagingsmall bowel follow-throughsmall bowel obstructionultrasound

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Area of Science:

  • Gastroenterology
  • Radiology
  • Surgical Oncology

Background:

  • Bowel obstruction is a common surgical emergency.
  • Accurate diagnosis and management are vital for patient outcomes.

Purpose of the Study:

  • To outline the evaluation and management of small and large bowel obstructions.
  • To highlight the role of various imaging modalities in diagnosing bowel obstructions.

Main Methods:

  • Review of current literature on bowel obstruction diagnosis and management.
  • Emphasis on the utility of computed tomography (CT) as the primary imaging modality.
  • Discussion of alternative imaging techniques including plain radiographs, contrast studies, ultrasonography, and magnetic resonance imaging (MRI).

Main Results:

  • Computed tomography (CT) is generally the most accurate and appropriate imaging modality for suspected bowel obstructions.
  • Plain radiographs, contrast imaging/fluoroscopy are commonly used adjuncts.
  • Ultrasonography and MRI are less frequently utilized but can provide valuable information in specific cases.

Conclusions:

  • A systematic and methodological approach to imaging interpretation is essential for accurate diagnosis of bowel obstructions.
  • Surgeons must be proficient in interpreting imaging findings to guide patient management effectively.
  • Multimodality imaging approaches may be necessary for complex cases.