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Related Experiment Videos

Contemporary concepts for imaging urinary tract obstruction.

J J Cronan1

  • 1Department of Diagnostic Imaging, Rhode Island Hospital, Providence 02903.

Urologic Radiology
|January 1, 1992
PubMed
Summary

Ultrasound effectively assesses urinary tract obstruction, with Doppler technology reducing false positives. However, limitations remain, sometimes requiring intravenous urography for definitive diagnosis.

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Area of Science:

  • Radiology
  • Urology
  • Medical Imaging

Background:

  • Ultrasound is a key diagnostic tool for urinary tract obstruction.
  • Pulsed and color Doppler ultrasound have improved accuracy by differentiating true obstructions from other conditions.

Purpose of the Study:

  • To evaluate the role and limitations of ultrasound in diagnosing urinary tract obstruction.
  • To highlight the continued need for alternative imaging modalities in specific cases.

Main Methods:

  • Review of ultrasound techniques for urinary tract obstruction assessment.
  • Analysis of Doppler capabilities in differentiating obstructive from non-obstructive conditions.
  • Identification of scenarios where ultrasound is insufficient.

Main Results:

  • Ultrasound, particularly with Doppler, significantly reduces false-positive diagnoses of urinary tract obstruction.
  • Non-obstructive hydronephrosis and vascular structures are better distinguished.
  • Certain limitations persist, necessitating further investigation.

Conclusions:

  • Ultrasound is a valuable primary imaging modality for urinary tract obstruction.
  • Doppler ultrasound enhances diagnostic precision.
  • Intravenous urography remains essential for select cases where ultrasound is inconclusive.

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