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

51 Revised 7/22/09 (Gentry/Ranallo)
Scan Factors for Part 2 only:
Smart Prep
Prep Over
mA
Monitoring Delay
(sec)
Monitoring
ISD (sec)
Enhancement
Threshold
Diagnostic Delay
(sec)
Aortic Arch 40 10.0 2.5 50 8.0
Pituitary Gland and Cavernous Sinus
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 0.6 0.5 0.5 0.7
Detector Coverage (mm)
Beam Collimation (mm)
10 10 10 20 10
Detector Rows 16 16 16 16 8
Pitch 0.562 0.562 0.562 0.531 0.625
Speed (mm/rot) 5.625 5.625 5.625 10.62 6.25
Detector Configuration 16 x 0.625 16 x 0.625 16 x 0.625 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 110-570 90-400 110-550 100-520 90-400
Noise Index 5.1 5.1 5.1 5.1 5.1
(Manual mA) 370 300 360 340 290
Recon 1:
DFOV 12 12 12 12 12
Recon Type Standard Standard Standard Standard Standard
WW/ WL 300/0 300/0 300/0 300/0 300/0
Recon Option Plus Plus Plus Full Plus
Recon Option
Recon 2:
IQ Enhance
DFOV 12 12 12 12 12
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) 0.625 0.625 0.625 0.625 1.25
Interval (mm) 0.375 0.375 0.375 0.312 0.75