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[New methods for assessing gastrointestinal blood flow].

U Hoffmann1, R Münch

  • 1Department für Innere Medizin, Medizinische Poliklinik, Universitätsspital Zürich.

Zeitschrift Fur Gastroenterologie
|January 1, 1991
PubMed
Summary

Non-invasive tests like duplex scanning and laser Doppler flowmetry can now assess intestinal blood flow. These methods offer new ways to examine blood circulation in the bowel and its microcirculation.

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Area of Science:

  • Gastroenterology
  • Medical Imaging
  • Biomedical Engineering

Background:

  • Assessing intestinal blood flow is crucial for diagnosing various gastrointestinal conditions.
  • Traditional methods for evaluating intestinal perfusion can be invasive or limited in scope.

Purpose of the Study:

  • To review and describe non-invasive techniques for evaluating intestinal blood flow.
  • To highlight the capabilities of duplex scanning and laser Doppler flowmetry in this area.

Main Methods:

  • Duplex scanning: Combines ultrasonic imaging with pulsed Doppler to analyze blood flow in mesenteric arteries and the celiac trunk.
  • Laser Doppler flowmetry: Utilizes fiber optic guides for endoscopic examination of intestinal mucosal microcirculation.

Main Results:

  • Duplex scanning allows for the analysis of flow curves and Doppler frequency spectra.
  • Laser Doppler flowmetry enables direct assessment of microcirculatory blood flow at the mucosal surface.

Conclusions:

  • Duplex scanning and laser Doppler flowmetry represent promising non-invasive approaches for evaluating intestinal blood flow.
  • These techniques offer enhanced diagnostic potential for conditions related to intestinal perfusion.

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