Imaging primer for CT angiography in peripheral vascular trauma

Area of Science:

• Radiology
• Vascular Surgery
• Trauma Imaging

Background:

• Computed tomography angiography (CTA) utilization for peripheral vascular trauma has risen significantly.
• Multidetector CT (MDCT) advancements have improved imaging capabilities and diagnostic accuracy.
• CTA demonstrates high sensitivity and specificity compared to conventional angiography.

Purpose of the Study:

• To review the role and effectiveness of CTA in evaluating peripheral vascular trauma.
• To highlight the direct and indirect imaging findings of arterial injury on CTA.
• To discuss the benefits and potential pitfalls of MDCT in trauma assessment.

Main Methods:

• Review of existing literature on CTA for peripheral vascular trauma.
• Analysis of CTA findings, including direct signs (extravasation, pseudoaneurysm, AVF, dissection, occlusion) and indirect signs.
• Discussion of MDCT advantages: speed, multiplanar/3D reconstructions, soft tissue/bone assessment.

Main Results:

• MDCT-CTA offers high sensitivity, specificity, and diagnostic accuracy for vascular injuries.
• Direct signs of arterial injury include contrast extravasation, pseudoaneurysm, AVF, intimal injury, dissection, and occlusion.
• Indirect signs associated with vascular injury can also be identified.

Conclusions:

• MDCT-CTA is a preferred imaging modality for peripheral vascular trauma due to its comprehensive assessment capabilities.
• Understanding direct and indirect CTA findings is crucial for accurate diagnosis.
• Proper planning and post-processing can mitigate potential imaging pitfalls.