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Related Experiment Videos

Acoustic streaming in ovarian cysts.

Lisa Clarke1, Andrew Edwards, Karen Pollard

  • 1Ultrasound Department, Diagnostic Imaging, Monash Medical Centre, 246 Clayton Rd, Clayton, Victoria, Australia. lisa.clarke@southernhealth.org.au

Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine
|April 21, 2005
PubMed
Summary

Endometriomas, a type of ovarian cyst, do not exhibit acoustic streaming. This finding may help differentiate them from other ovarian cysts like cystadenomas, which do show acoustic streaming.

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Area of Science:

  • Medical Imaging
  • Gynecologic Oncology
  • Ultrasound Technology

Background:

  • Ovarian cysts present a diagnostic challenge, with some types mimicking endometriomas on ultrasound.
  • Differentiating endometriomas from other cystic ovarian masses is crucial for appropriate patient management.

Purpose of the Study:

  • To test the hypothesis that endometriomas do not exhibit acoustic streaming.
  • To quantify acoustic streaming velocities in ovarian cysts that do display this phenomenon.

Main Methods:

  • Prospective evaluation of ovarian cysts (>2 cm with internal echoes) using B-mode sonography.
  • Pulsed Doppler assessment of acoustic streaming velocity in the distal portion of cysts.
  • Correlation with surgical and histopathologic findings for definitive diagnosis.

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Main Results:

  • Acoustic streaming was observed in 38% of evaluated ovarian cysts.
  • None of the 10 endometriomas demonstrated acoustic streaming (P = .002).
  • Cystadenomas showed acoustic streaming in 86% of cases, with velocities ranging from 0.8 to 3.6 cm/s.

Conclusions:

  • Endometriomas lack acoustic streaming, distinguishing them from other ovarian cysts.
  • Acoustic streaming assessment can be a valuable adjunct in diagnosing ovarian cysts.
  • This technique may aid in excluding endometrioma when acoustic streaming is present.