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

More documents

Recommendations

Info

Billing: Setup: DFOV: 1. CT Head with and without 2. CTA Head with contrast 3. CT Brain Perfusion if done 4. Contrast used if done 112 Revised 7/22/09 (Gentry/Ranallo) Vascular Imaging: CTA Head Only: (Stenosis, Unknown Bleed): (Protocol – Adult: # 1.7 – Pediatric: # 11.18 & 11.19) 1. Patient Supine, AP and lateral scouts, No Gantry Tilt 2. Extend the scouts to include the aortic arch for smart prep. 3. 16 or 64 slice scanners 4. Patient Positioning: Tilt the patient’s head so that a line connecting the lateral canthus of the eye and the EAC is perpendicular to the CT tabletop (see below). Preferred 20 cm (Range 18-22 cm) Exam: Part 1: Routine Head CT without contrast (helical) Part 2: Part 3: Part 4: Networking: Processing: CTA Head Only 1. Scan Area from the top of the head to the bottom of C2 (see below) 2. Scan direction scan from top to bottom 3. Contrast Adult: 80 ml of Iohexol 300 (24 g Iodine) with a 50 ml saline chase Peds: 1 ml/lb (2 ml/kg) of Iohexol 300 with a 10-25 ml saline chase 4. Injection Rate Adult: 4 ml per sec (26.6 sec contrast injection time) (43.3 sec contrast transit time) Peds: 2.0-2.5 ml/sec 5. Smart Prep over aortic arch (initiate the scan at the entry of contrast in the aortic arch) CT Perfusion (see perfusion page for details) 1. Wait at least 5 min from start of CTA contrast inject before beginning Perfusion Injection. 2. Contrast 40 ml of 370 nonionic contrast (14.8 g Iodine) with 30 ml saline chase 3. Injection Rate Adults: 5 ml per sec with a 5 sec prep delay Pediatric: 3-5 ml per sec (Depends on size of needle and age of patient) 4. Prep Delay 5 seconds Routine Head CT with contrast (helical) 1. If Perfusion is done, perform immediately after the Perfusion Imaging - No need to wait 5 min. 2. If Perfusion is not done, perform scan at least 5 min after start of CTA contrast injection 1. ALI store, CTAW2 and CTAW3 1. Thick Slab Reformat Instructions (See Appendix 1) 2. Perfusion Analysis (3D Lab) (See Appendices 3 and 4) 3. 3D Intravascular Image Analysis on ADW workstation (Do on Stent Cases)
113 Revised 7/22/09 (Gentry/Ranallo) Smart Prep Prep Over mA Monitoring Delay (sec) Monitoring ISD (sec) Enhancement Threshold Diagnostic Delay (sec) Aortic Arch 80 10.0 3 50 3.0 CTA: Head Only Adult 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 100 100 100 100 100 Smart mA/ Auto mA Range 280-780 170-420 270-750 260-710 190-420 Noise Index 6.6 6.6 6.6 6.6 6.6 (Manual mA) 620 380 600 570 420 Recon 1: DFOV 22 22 22 22 22 Recon Type Standard Standard Standard Standard Standard WW/ WL 450/60 450/60 450/60 450/60 450/60 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 3500/350 3500/350 3500/350 3500/350 3500/350 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
Page 1 and 2:
Name / MRN: ___________________ / _
Page 3 and 4:
Table of Contents (continued): 3 Re
Page 5 and 6:
5 Revised 7/22/09 (Gentry/Ranallo)
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Adult Head: (Axial Mode) (Protocol
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Sinuses (Diagnostic): (Adult and Pe
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62: 61 Revised 7/22/09 (Gentry/Ranallo)
Page 101 and 102: 101 Revised 7/22/09 (Gentry/Ranallo
Page 107 and 108: Vascular Imaging: Stroke Deluxe: (A
Page 111: 111 Revised 7/22/09 (Gentry/Ranallo
Page 129 and 130: Appendix # 2 129 Revised 7/22/09 (G
Page 133 and 134: Suggestions for ROI Placement 133 R
Page 139 and 140: 1. CTA (High-res COW) 2. CTA (Strok
Page 143: 143 Revised 7/22/09 (Gentry/Ranallo
show all

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

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?