CT Protocols: (Brain, ENT, Spine, Vascular) - Department of Radiology

69 Revised 7/22/09 (Gentry/Ranallo)
Scan Factors: (For Part 2 Only - With Contrast)
Smart Prep
Prep Over
mA
Monitoring Delay
(sec)
Monitoring
ISD (sec)
Enhancement
Threshold
Diagnostic Delay
(sec)
Aortic Arch 40 10.0 2.5 50 15.0
Temporal Bone: (W/O & W/ Contrast)
Pediatric Infant (0 – 3 yr)
Scanner GE LS Xtra GE LS 16 GE LS 16 Pro GE LS VCT 64 GE LS 8
Scan Type Helical Helical Helical Helical Helical
Rotation Time (sec) 0.6 0.7 0.5 0.5
Detector Coverage (mm)
Beam Collimation (mm)
10 10 10 20
Detector Rows 16 16 16 16
Pitch 0.562 0.562 0.562 0.531
Speed (mm/rot) 5.625 5.625 5.625 10.62
Detector Configuration 16 x 0.625 16 x 0.625 16 x 0.625 64 x 0.625
Slice Thickness (mm) 1.25 1.25 1.25 1.25
Interval (mm) 0.75 0.75 0.75 0.625
Scan FOV Head Head Head Small Head
kV 80 80 80 80
Smart mA/ Auto mA Range 130-630 90-400 120-610 120-580
Noise Index 6.8 6.8 6.8 6.8
(Manual mA) 430 290 410 380
Recon 1:
DFOV 20 20 20 20
Recon Type Standard Standard Standard Standard
WW/ WL 400/40 400/40 400/40 400/40
Recon Option Plus Plus Plus Full
Recon Option
Contrast (Part 2 Only)
CT 1 CT 2 CT 3 CT 4 & ER CT East & RP CT
IQ Enhance