Case 335.

Area of Science:

• Vascular imaging
• Cerebrovascular disease assessment

Background:

• Patient history: 84-year-old female with prior right carotid endarterectomy for 75% stenosis.
• Co-existing condition: 72% asymptomatic left carotid artery stenosis.
• Relevant comorbidities: Arterial hypertension and incomplete left bundle branch block.

Observation:

• Routine CT angiography (CTA) of the neck arteries was performed.
• Contrast material injection via antecubital fossa catheter was uneventful.
• Automatic scan initiation triggered by aortic arch attenuation of 800 HU.

Findings:

• Demonstration of carotid artery stenosis via CTA.
• Successful execution of standard CTA protocol.
• No patient-reported pain or sensor anomalies during contrast injection.

Implications:

• Highlights the utility of CTA in post-surgical surveillance of carotid stenosis.
• Illustrates standard CTA protocol for neck vasculature.
• Underscores the importance of automated scan triggering in contrast-enhanced imaging.