CT PAgram - Technique
	n Best on modern multidetector CT n 4, 8 or 16 channels n Scan at thinnest slice width possible for breath hold n 1mm best—good evaluation of most subsegmental vessels n 2.5 - 3 mm satisfactory for segmental vessels n High injection rate of contrast for maximum vessel enhancement n 3-4 cc/sec n Breath hold 8 sec for 16 channel scanner, 18 sec for 4 channels n Window and levels settings customized to scan