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

118 Revised 7/22/09 (Gentry/Ranallo)
Smart Prep
Prep Over
mA
Monitoring Delay
(sec)
Monitoring
ISD (sec)
Enhancement
Threshold
Diagnostic Delay
(sec)
Aortic Arch 40 10.0 3 50 3.0
CTA: Aneurysm (Hi-Res COW):
Pediatric Child (3 – 6 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 0.8 0.5 0.5 0.8
Detector Coverage (mm)
Beam Collimation (mm)
20 20 20 20 10
Detector Rows 16 16 16 16 8
Pitch 0.562 0.562 0.562 0.531 0.625
Speed (mm/rot) 11.25 11.25 11.25 10.62 6.25
Detector Configuration 16 x 1.25 16 x 1.25 16 x 1.25 64 x 0.625 8 x 1.25
Slice Thickness (mm) 1.25 1.25 1.25 1.25 1.25
Interval (mm) 0.75 0.75 0.75 0.625 0.75
Scan FOV Head Head Head Small Head Head
kV 80 80 80 80 80
Smart mA/ Auto mA Range 220-675 130-400 210-675 200-660 150-400
Noise Index 6.0 6.0 6.0 6.0 6.0
(Manual mA) 540 330 520 490 370
Recon 1:
DFOV 20 20 20 20 20
Recon Type Standard Standard Standard Standard Standard
WW/ WL 400/40 400/40 400/40 400/40 400/40
Recon Option Plus Plus Plus Full Plus
Recon Option
Recon 2:
IQ Enhance
DFOV 20 20 20 20 20
Recon Type Bone Plus Bone Plus Bone Plus Bone Plus Bone Plus
WW/ WL 3000/300 3000/300 3000/300 3000/300 3000/300
Recon Option Plus Plus Plus Full Plus
Recon Option
Contrast
CT 1 CT 2 CT 3 CT 4 & ER CT East & RP CT
IQ Enhance
Slice Thickness (mm) 1.25 1.25 1.25 1.25 1.25
Interval (mm) 0.75 0.75 0.75 0.625 0.75