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

88 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
Neck: Parathyroid Adenoma
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 Head Head
kV 100 100 100 100 110
Smart mA/ Auto mA Range 170-800 100-420 160-770 150-740 100-420
Noise Index 10.6 10.6 10.6 10.6 10.6
(Manual mA) 490 290 470 440 330
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