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An algorithm for the diagnosis of focal liver masses using microbubble contrast-enhanced pulse-inversion sonography
Stephanie R Wilson1, Peter N Burns
1Department of Medical Imaging, University of Toronto, Toronto, ON, Canada. Stephanie.Wilson@uhn.on.ca
AJR. American Journal of Roentgenology
|April 25, 2006
Summary
A new algorithm for liver mass diagnosis using microbubble contrast-enhanced ultrasound accurately identifies benign and malignant lesions. This method improves diagnostic sensitivity for common liver masses.
Area of Science:
- Medical Imaging
- Hepatology
- Diagnostic Ultrasound
Background:
- Accurate diagnosis of liver masses is crucial for patient management.
- Microbubble contrast-enhanced ultrasonography offers potential for improved lesion characterization.
Purpose of the Study:
- To develop a diagnostic algorithm for liver mass interpretation using microbubble contrast-enhanced pulse-inversion sonography.
Main Methods:
- Ninety-six liver lesions were evaluated using DMP 115 (Definity)-enhanced pulse-inversion sonography.
- A three-person blind review assessed lesional vascularity and enhancement patterns across different phases.
- The algorithm was developed by comparing reviewer assessments with final diagnoses.
Main Results:
- Portal phase enhancement effectively differentiated benign (92%) from malignant (93%) lesions.
- Specific enhancement patterns identified hemangiomas (92%) and focal nodular hyperplasias (95%).
- Arterial phase information was less effective for differentiating hepatocellular carcinoma from other malignancies when portal enhancement was negative.
Conclusions:
- A simple diagnostic algorithm for microbubble-enhanced sonography provides sensitive and accurate diagnosis of common liver masses.
- The algorithm aids in distinguishing benign from malignant liver lesions.