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Fig. 1B. —Sliding thin-slab maximum-intensity-projection (MIP) images
of 63-year-old man who underwent CT angiography of pulmonary arteries twice.
90 mL high-concentration contrast media (400 mg I/mL). Note increased
enhancement of the left main pulmonary artery (long arrow) and more
uniform visualization of lateral and anterior subsegmental artery of anterior
segmental artery of left upper lobe (short arrows) in B.
Sliding thin slab MIP images were obtained for illustration only; within-study
assessment of peripheral arteries was performed on axial images. Thickness of
slab, window width, and window center were identical in both images.
Enhancement of main pulmonary arteries was 213 H in A and 340 H in
B.
