CTA technical parameters for aorta and peripheral arteries
Applied
Type
ModificationConfidence
95%
Created
Mar 20, 2026
Evidence
2 sources
Rationale
The section was updated to incorporate the latest society guidelines from ACC/AHA for both aortic disease (2022) and peripheral artery disease (2024). These guidelines provide high-level evidence for technical requirements like ECG-gating and the clinical application of CTA in revascularization planning. Abbreviations were expanded on first use as per instructions.
Evidence
Content Changes
removedadded
**computed tomography angiography (CTA) Technical Parameters for Aorta and Peripheral Arteries** Optimal CTA imaging requires attention to specific technical parameters that vary by anatomic region: **Aortic and endovascular aneurysm repair (EVAR) imaging:** High-quality aortic CTA employs submillimeter collimation (≤1 mm) with multiphasic acquisitions including non-contrast, arterial phase (using bolus tracking), and delayed phase for endoleak detection. ECG-gatingElectrocardiogram (ECG)-gating is appliedrecommended for thoracic aorta imaging to minimize motion artifact, particularly when assessing the aortic root or ascending aorta.aorta [@aha2022-h]. Standardized contrast delivery protocols (4–6 mL/s with bolus tracking) ensure consistent arterial enhancement. **Lower extremity CTA:** Imaging parametersparameters, including table speed and reconstruction kernelskernels, are optimized for distal runoff vessel assessment,assessment ensuringin patients with peripheral artery disease (PAD) to ensure adequate visualization of tibial and pedal arteries.arteries for revascularization planning [@svs2024-m]. These technical standards support the planning and surveillance protocols outlined in ESVSEuropean Society for Vascular Surgery (ESVS) abdominal aortic aneurysm (AAA) guidelines.guidelines and other contemporary society recommendations [@sun2011] [@esvs2019-aaa] [@aha2022-h] [@svs2024-m].