CEUS in abdominal trauma: multi-center study

Area of Science:

• Emergency Medicine
• Radiology
• Diagnostic Imaging

Background:

• Blunt abdominal trauma frequently causes solid organ injuries.
• Accurate and timely diagnosis is crucial for patient management and prognosis.
• Computed tomography (CT) is the gold standard, but ultrasound (US) offers rapid bedside assessment.

Purpose of the Study:

• To compare the diagnostic performance of standard US and contrast-enhanced US (CEUS) against CT for solid organ injury in blunt trauma.
• To evaluate the concordance of US and CEUS with CT findings.

Main Methods:

• 156 blunt trauma patients underwent US, followed by CEUS using SonoVue, and CT within 1 hour.
• Standard US included free fluid assessment and solid organ analysis.
• CEUS utilized low-mechanical index techniques.

Main Results:

• CEUS demonstrated higher sensitivity, specificity, and accuracy than standard US for renal, liver, and spleen injuries.
• Per-patient analysis showed CEUS sensitivity increased from 79% to 94%, specificity from 82% to 89%, and accuracy from 80% to 92% compared to baseline US.
• CEUS improved detection rates for renal (36% to 69%), liver (68% to 84%), and spleen (77% to 93%) injuries.

Conclusions:

• CEUS significantly enhances the sensitivity and accuracy of ultrasound in diagnosing solid organ injuries following blunt trauma.
• CEUS may reduce the need for further imaging modalities like CT in trauma patients.
• Minor injuries identified as false negatives by CEUS typically do not impact patient management or prognosis.