Acoustic shadowing

Acoustic shadowing on an ultrasound image is characterised by a signal void behind structures that strongly absorb or reflect ultrasonic waves. This happens most frequently with solid structures, as sound conducts most rapidly in areas where molecules are closely packed, such as in bone or stones. 

See also

Physics and imaging technology: ultrasound
Ultrasound - general index
Share article

Article information

rID: 24967
Section: Physics
Synonyms or Alternate Spellings:
  • Sonographic acoustic shadowing

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    Case 1: cholelithiasis - acoustic shadowing
    Drag here to reorder.
  • Drag
    Case 2: appendicolith - acoustic shadowing
    Drag here to reorder.
  • Drag
    Renal calculus in...
    Case 3: renal calculus - acoustic shadowing
    Drag here to reorder.
  • Updating… Please wait.

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.