Fig. 4 | Scientific Reports

Fig. 4

From: Improving lower-extremity artery depiction and diagnostic confidence using dual-energy technique and popliteal artery monitoring in dual-low dose CT angiography

Fig. 4

A 70-year-old male patient with a history of smoking and intermittent claudication in the right lower limb underwent routine lower limb artery CTA (abdominal aorta monitoring). (a) Show abdominal lliac segment. (b) Show femoral popliteal segment. (c) Show lower knee segment. (d) Show maximum intensity projection of peripheral arteries. The overall image quality was moderate, with insufficient contrast enhancement in the LKS region. A senior physician diagnosed no significant abnormalities in the lower limb arteries, while the junior physician had low confidence in the LKS diagnosis. Subjective scores were AIS: 4, FPS: 3, LKS: 3, with a lower limb vessel grading of 2. Diagnostic confidence levels were AIS: 3, FPS: 3, LKS: 1.

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