Table 1.
Objective image quality evaluation of lower extremity CTA.
Figure 1.
Lower extremity CTA using 120-year-old man with PAD.
A, curved planar reformatted image and B–D, maximum intensity projection images. The image quality was visually classified as score 4 (excellent) in the aortoiliac (B), femoropopliteal (C) and lower leg segments (D).
Figure 2.
Lower extremity CTA using 70-year-old man with PAD.
A, curved planar reformatted image and B–D, maximum intensity projection images. The image quality was visually classified as score 4 (excellent) in the aortoiliac (B), femoropopliteal (C) and lower leg segments (D).
Figure 3.
Lower extremity CTA using 70-year-old woman with tumor.
A, curved planar reformatted image and B–D, maximum intensity projection images. The image quality was visually classified as score 3 (good) in the aortoiliac (B), femoropopliteal (C) and lower leg segments (D). Note abnormal hypervascular mass (myxofibrosarcoma) in the left thigh (arrow in panels B and C).
Figure 4.
Lower extremity CTA using 120-year-old man with PAD.
A, curved planar reformatted image and B–D, maximum intensity projection images. The image quality was visually classified as score 3 (good) in the aortoiliac (a) and femoropopliteal (b) and score 2 (adequate) in the lower leg segments (c) because of poor visualization. Note extensive calcification of bilateral arteries of low extremity.
Table 2.
Subjective image quality scores of three arterial segments of the lower extremities.
Table 3.
Radiation dose comparison of two lower extremity CTA protocols.