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Related Experiment Videos

Cellulose as a gastrointestinal US contrast agent.

P J Lund1, T A Fritz, E C Unger

  • 1Department of Radiology, University of Arizona Health Sciences Center, Tucson 85724.

Radiology
|December 1, 1992
PubMed
Summary

Cellulose preparations improved abdominal ultrasound (US) imaging by reducing gas artifacts. These gastrointestinal US contrast agents enhanced visualization of abdominal anatomy and bowel structures.

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Area of Science:

  • Medical Imaging
  • Gastroenterology
  • Biomaterials

Background:

  • Abdominal ultrasound (US) imaging quality is frequently degraded by artifacts caused by adjacent bowel gas.
  • Reducing these artifacts is crucial for accurate diagnosis and assessment of abdominal organs.

Purpose of the Study:

  • To evaluate cellulose preparations as gastrointestinal (GI) US contrast agents for improving abdominal US image quality.
  • To assess the efficacy of these agents in reducing bowel gas artifacts and enhancing visualization of abdominal anatomy.

Main Methods:

  • Cellulose preparations were assessed for homogeneity and reflectivity in phantom solutions.
  • Two selected agents were administered orally to ten volunteers, who underwent abdominal US imaging before and after administration.

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  • Images were evaluated by five radiologists for bowel marking, anatomical visualization, and gas artifact degradation.

    • Main Results:

    • The orally administered US contrast agents significantly improved visualization of bowel and abdominal anatomy compared to degassed water.
    • A notable reduction in image degradation caused by bowel gas was observed after contrast agent administration.
    • The selected cellulose preparations demonstrated optimal homogeneity and reflectivity for US imaging.

    Conclusions:

    • Cellulose-based gastrointestinal US contrast agents are effective in mitigating bowel gas artifacts.
    • These agents enhance the diagnostic quality of abdominal US imaging by improving visualization of anatomical structures.
    • Cellulose preparations represent a promising approach to overcoming limitations in abdominal US examinations.