Table 2.

Recommended Acquisition Protocol for Perfusion-CT.

Image acquisition rate:	Image acquisition 6–7 seconds after start of injection of the contrast bolus. 2 phases: First phase: 1 image per second, duration 30 to 45 seconds Second phase: 1 image per 2 or 3 seconds, duration 30 to 45 seconds Total duration at least 70 seconds
Image acquisition parameters:	80 kVp, 100 mAs
Coverage and slice thickness	Field of view ≈ 24 cm Maximal coverage possible based on CT scanner configuration (Minimal coverage of 20 mm slab per bolus injection preferable. Two boluses injection is possible to double coverage in scanners with under 40 mm detector length under precluded by contrast dose considerations)
Slice orientation	Parallel to hard palate.
Contrast material	High concentration (350–370 mg/mL) low/iso osmolar contrast preferred
Contrast volume	35 to 50 mL, followed by 20 to 40 mL saline flush
Injection rate:	4 to 6 mL per second. Same rate for saline
IV access	18 to 20 gauge IV line. Right antecubital vein preferred