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

58 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 2.5 50 8.0
Sinuses (Diagnostic)
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) 0.5 0.5 0.5 0.5 0.5
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 90-410 70-330 70-330 60-310 70-370
Noise Index 6.6 6.6 6.6 6.6 6.6
(Manual mA) 280 220 220 210 250
Recon 1:
DFOV 14 14 14 14 14
Recon Type Standard Standard Standard Standard Standard
WW/ WL 400/30 400/30 400/30 400/30 400/30
Recon Option Plus Plus Plus Full Plus
Recon Option
Recon 2:
IQ Enhance
DFOV 14 14 14 14 14
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
Non-Contrast or 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) 0.625 0.625 0.625 0.625 0.75