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Related Experiment Videos

"Lights and shadows" in ultrasonography.

Adolfo Canadè1, Francesco Palladino, Vincenzo Summaria

  • 1Istituto di Radiologia, Università Cattolica del S. Cuore, Policlinico A. Gemelli, Largo A. Gemelli 8, 00168 Roma, Italy.

Rays
|September 26, 2003
PubMed
Summary

A gallbladder ultrasound revealed a suspicious artifact, not gallstones, due to a partial volume effect. This highlights the importance of recognizing and differentiating sonographic artifacts from actual pathology in abdominal imaging.

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Area of Science:

  • Medical Imaging
  • Diagnostic Ultrasound
  • Gastrointestinal Radiology

Background:

  • Biliary colic symptoms necessitate diagnostic imaging, often with ultrasound.
  • Ultrasound is crucial for evaluating the gallbladder and bile ducts for potential lithiasis.
  • Differentiating true pathology from artifacts is essential for accurate diagnosis.

Observation:

  • A hyper-reflecting image with posterior shadowing was observed in the gallbladder infundibulum.
  • The shadowing characteristics were atypical for gallstones (lithiasis).
  • Re-examination after a short interval showed a normal infundibulum, suggesting a transient phenomenon.

Findings:

  • The observed shadowing was determined to be an artifact, not indicative of gallstones.
  • The artifact was likely caused by a partial volume effect from air in the adjacent duodenum.

Related Experiment Videos

  • This artifact can mimic the appearance of gallstones on ultrasound.

    • Implications:

    • Understanding sonographic artifacts is critical for accurate interpretation of gallbladder imaging.
    • This case emphasizes the need for careful evaluation and potential repeat scanning when artifacts are suspected.
    • Proper identification of artifacts prevents misdiagnosis and unnecessary interventions for biliary colic.