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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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Related Experiment Video

Updated: Jul 4, 2025

Spatiotemporal Mapping of Motility in Ex Vivo Preparations of the Intestines
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Individualized small bowel preparation for computed tomography enterography: A prospective randomized controlled

Yi-Ning Sun1, Yue-Yue Li1, Meng-Qi Zheng1

  • 1Department of Gastroenterology, Qilu Hospital, Shandong University, Jinan, China.

Journal of Gastroenterology and Hepatology
|February 8, 2024
PubMed
Summary

Individualized small bowel preparation for computed tomography enterography (CTE) based on body mass index (BMI) is feasible. This approach optimizes mannitol volume for better patient acceptance and image quality, offering an acceptable alternative for CTE.

Keywords:
Body mass indexComputed tomography enterographyIndividualized

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Area of Science:

  • Radiology
  • Gastroenterology
  • Medical Imaging

Background:

  • Standardized bowel preparation for computed tomography enterography (CTE) may not be optimal for all patients.
  • Body Mass Index (BMI) varies significantly among individuals, potentially impacting bowel preparation efficacy.

Purpose of the Study:

  • To evaluate the feasibility of individualized small bowel preparation for CTE based on BMI.
  • To compare the efficacy and patient acceptance of BMI-adjusted mannitol volumes versus a standardized volume.

Main Methods:

  • A prospective randomized controlled study involving 203 patients undergoing CTE.
  • Patients were assigned to an individualized group (mannitol volume based on BMI) or a standardized group (1500 mL).
  • Image quality, disease detection, adverse events, and patient acceptance were assessed.

Main Results:

  • For patients with BMI < 18.5 kg/m², 1000 mL mannitol reduced flatulence and defecation frequency with higher acceptance, without compromising image quality or disease detection.
  • For patients with BMI ≥ 25 kg/m², 2000 mL mannitol improved image quality but showed comparable adverse events and acceptance to the standard dose.
  • Individualized preparation demonstrated potential benefits for specific BMI ranges.

Conclusions:

  • Individualized, BMI-based small bowel preparation is a feasible and acceptable alternative for CTE.
  • This approach can optimize patient experience and image quality in CTE procedures.