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Appendicitis: efficacy of color Doppler sonography
1Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO 63110.
Radiology
|May 1, 1994
Summary
Color Doppler ultrasonography (US) aids in diagnosing pediatric appendicitis by detecting increased blood flow. However, its absence doesn't rule out the condition, necessitating further evaluation.
Area of Science:
- Pediatric Radiology
- Diagnostic Imaging
- Gastrointestinal Imaging
Background:
- Appendicitis is a common surgical emergency in children.
- Accurate diagnosis is crucial to prevent complications.
- Gray-scale ultrasonography (US) is a primary imaging modality.
Purpose of the Study:
- To evaluate the added diagnostic value of color Doppler US in pediatric appendicitis.
- To compare the efficacy of color Doppler US with gray-scale US.
Main Methods:
- One hundred children with suspected appendicitis underwent both gray-scale and color Doppler US.
- Diagnostic criteria for appendicitis and perforation were established for each modality.
Main Results:
- Color Doppler US identified acute appendicitis in 87% of confirmed cases (sensitivity 87%, specificity 97%, accuracy 93%).
- Gray-scale US showed similar sensitivity (87%) but lower specificity (92%) and accuracy (90%).
- Increased vascularity on color Doppler US suggested appendicitis or perforation with abscess.
Conclusions:
- Color Doppler US can enhance the diagnosis of pediatric appendicitis by visualizing appendiceal vascularity.
- Absence of increased blood flow on color Doppler US does not exclude appendicitis.
- Combined gray-scale and color Doppler US offers improved diagnostic performance.