Table 1:

Sample acute stroke protocol for 64-section MDCT scanner: NCCT, vertex-to-arch CTA with cardiac component, and standard cine CTP

	Location	Section Thickness (mm)	Image Spacing (mm)	Pitch	kV	mA	Gantry Rotation Time (s)	Contrast Administration
NCCT	C1 to vertex	5	5	0.531:1	120	250	0.7
CTA	Vertex to 1 cm below carina	1.25	0.625	0.516:1	120	420	0.5	4 mL/s; volume, 40-mL contrast
Cardiac	Carina to just below diaphragm	0.625	0.625	1:1	120	420	0.35	Repeat after 45-second delay
Cine CTP	Selected by neuroradiologist	4-cm slab	N/A	N/A	80	200	1	7 mL/s; volume, 35 mL

Note:—NCCT indicates noncontrast CT; N/A, not applicable; MDCT, multidector row CT; CTA, CT angiography; CTP, CT perfusion .