CT Protocols: (Brain, ENT, Spine, Vascular) - Department of Radiology
CT Protocols: (Brain, ENT, Spine, Vascular) - Department of Radiology CT Protocols: (Brain, ENT, Spine, Vascular) - Department of Radiology
78 Revised 7/22/09 (Gentry/Ranallo) Smart Prep Prep Over mA Monitoring Delay (sec) Monitoring ISD (sec) Enhancement Threshold Aortic Arch 80 10.0 3.0 50 Diagnostic Delay (sec) LS VCT64: 5.0 LS 16 & 16 Pro: 8.0 LS 4 & LS 8: 10.0 Neck: Routine 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 0.8 0.5 0.5 0.9 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 100 100 100 100 100 Smart mA/ Auto mA Range 180-690 110-410 170-660 160-620 110-410 Noise Index 14.5 14.5 14.5 14.5 14.5 (Manual mA) 360 220 350 330 220 Recon 1: DFOV 22 22 22 22 22 Recon Type Standard Standard Standard Standard Standard WW/ WL 300/35 300/35 300/35 300/35 300/35 Recon Option Plus Plus Plus Full Plus Recon Option Recon 2: IQ Enhance DFOV 22 22 22 22 22 Recon Type Bone Plus Bone Plus Bone Plus Bone Plus Bone Plus WW/ WL 2500/250 2500/250 2500/250 2500/250 2500/250 Recon Option Plus Plus Plus Full Plus Recon Option 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 Recon 3: DFOV 22 22 22 22 Recon Type Standard Standard Standard Standard WW/ WL 300/35 300/35 300/35 300/35 Recon Option Plus Plus Plus Full 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 Interval (mm) 0.375 0.375 0.375 0.312
79 Revised 7/22/09 (Gentry/Ranallo) Neck: Routine Adult – Angled Axials Non-Contrast or Contrast CT 1 CT 2 CT 3 CT 4 & ER CT East & RP CT Scanner GE LS Xtra GE LS 16 GE LS 16 Pro GE LS VCT 64 GE LS 8 Scan Type Axial Axial Axial Axial Axial Rotation Time (sec) 0.7 0.8 0.5 0.5 0.8 Detector Coverage (mm) Beam Collimation (mm) 10 10 10 10 10 Detector Rows 16 16 16 16 8 Number of Images per Rotation 4i 4i 4i 4i 4i Detector Configuration 16 x 0.625 16 x 0.625 16 x 0.625 16 x 0.625 8 x 1.25 Slice Thickness (mm) 2.5 2.5 2.5 2.5 2.5 Scan FOV Head Head Head Head Head kV 120 120 120 120 120 mA 640 440 720 720 440 Recon 1: DFOV 22 22 22 22 22 Recon Type Standard Standard Standard Standard Standard WW/ WL 300/35 300/35 300/35 300/35 300/35 Recon 2: DFOV 22 22 22 22 22 Recon Type Bone Plus Bone Plus Bone Plus Bone Plus Bone Plus WW/ WL 2500/250 2500/250 2500/250 2500/250 2500/250 Slice Thickness (mm) 1.25 1.25 1.25 1.25 1.25 Neck: Routine Pediatric Child (3 – 6 yr) – Angled Axials Non-Contrast or Contrast CT 1 CT 2 CT 3 CT 4 & ER CT East & RP CT Scanner GE LS Xtra GE LS 16 GE LS 16 Pro GE LS VCT 64 GE LS 8 Scan Type Axial Axial Axial Axial Axial Rotation Time (sec) 0.7 0.8 0.5 0.5 0.8 Detector Coverage (mm) Beam Collimation (mm) 10 10 10 10 10 Detector Rows 16 16 16 16 8 Number of Images per Rotation 4i 4i 4i 4i 4i Detector Configuration 16 x 0.625 16 x 0.625 16 x 0.625 16 x 0.625 8 x 1.25 Slice Thickness (mm) 2.5 2.5 2.5 2.5 2.5 Scan FOV Head Head Head Head Head kV 100 100 100 100 100 mA 630 420 700 700 420 Recon 1: DFOV 22 22 22 22 22 Recon Type Standard Standard Standard Standard Standard WW/ WL 300/35 300/35 300/35 300/35 300/35 Recon 2: DFOV 22 22 22 22 22 Recon Type Bone Plus Bone Plus Bone Plus Bone Plus Bone Plus WW/ WL 2500/250 2500/250 2500/250 2500/250 2500/250 Slice Thickness (mm) 1.25 1.25 1.25 1.25 1.25
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78 Revised 7/22/09 (Gentry/Ranallo)<br />
Smart Prep<br />
Prep Over<br />
mA<br />
Monitoring Delay<br />
(sec)<br />
Monitoring<br />
ISD (sec)<br />
Enhancement<br />
Threshold<br />
Aortic Arch 80 10.0 3.0 50<br />
Diagnostic Delay (sec)<br />
LS V<strong>CT</strong>64: 5.0<br />
LS 16 & 16 Pro: 8.0<br />
LS 4 & LS 8: 10.0<br />
Neck: Routine<br />
Pediatric Infant (0 – 3 yr)<br />
Scanner GE LS Xtra GE LS 16 GE LS 16 Pro GE LS V<strong>CT</strong> 64 GE LS 8<br />
Scan Type Helical Helical Helical Helical Helical<br />
Rotation Time (sec) 0.6 0.8 0.5 0.5 0.9<br />
Detector Coverage (mm)<br />
Beam Collimation (mm)<br />
20 20 20 20 10<br />
Detector Rows 16 16 16 16 8<br />
Pitch 0.562 0.562 0.562 0.531 0.625<br />
Speed (mm/rot) 11.25 11.25 11.25 10.62 6.25<br />
Detector Configuration 16 x 1.25 16 x 1.25 16 x 1.25 64 x 0.625 8 x 1.25<br />
Slice Thickness (mm) 1.25 1.25 1.25 1.25 1.25<br />
Interval (mm) 0.75 0.75 0.75 0.625 0.75<br />
Scan FOV Head Head Head Head Head<br />
kV 100 100 100 100 100<br />
Smart mA/ Auto mA Range 180-690 110-410 170-660 160-620 110-410<br />
Noise Index 14.5 14.5 14.5 14.5 14.5<br />
(Manual mA) 360 220 350 330 220<br />
Recon 1:<br />
DFOV 22 22 22 22 22<br />
Recon Type Standard Standard Standard Standard Standard<br />
WW/ WL 300/35 300/35 300/35 300/35 300/35<br />
Recon Option Plus Plus Plus Full Plus<br />
Recon Option<br />
Recon 2:<br />
IQ Enhance<br />
DFOV 22 22 22 22 22<br />
Recon Type Bone Plus Bone Plus Bone Plus Bone Plus Bone Plus<br />
WW/ WL 2500/250 2500/250 2500/250 2500/250 2500/250<br />
Recon Option Plus Plus Plus Full Plus<br />
Recon Option<br />
IQ Enhance<br />
Slice Thickness (mm) 1.25 1.25 1.25 1.25 1.25<br />
Interval (mm) 0.75 0.75 0.75 0.625 0.75<br />
Recon 3:<br />
DFOV 22 22 22 22<br />
Recon Type Standard Standard Standard Standard<br />
WW/ WL 300/35 300/35 300/35 300/35<br />
Recon Option Plus Plus Plus Full<br />
Recon Option<br />
Non-Contrast or Contrast<br />
<strong>CT</strong> 1 <strong>CT</strong> 2 <strong>CT</strong> 3 <strong>CT</strong> 4 & ER <strong>CT</strong> East & RP <strong>CT</strong><br />
IQ Enhance<br />
Slice Thickness (mm) 0.625 0.625 0.625 0.625<br />
Interval (mm) 0.375 0.375 0.375 0.312
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