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

More documents

Recommendations

Info

94 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: 20.0 LS Xtra, LS 16 & 16 Pro: 15.0 LS 8: 10.0 Thoracic Spine: Routine 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 0.9 0.5 0.5 1.0 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 Large Large Large Large Body Large kV 120 120 120 120 120 Smart mA/ Auto mA Range 170-760 90-440 160-760 150-750 90-440 Noise Index 14.4 14.4 14.4 14.4 14.4 (Manual mA) 330 180 320 300 180 Recon 1: DFOV 18 18 18 18 18 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 18 18 18 18 Recon Type Bone Plus Bone Plus Bone Plus Bone Plus WW/ WL 3000/300 3000/300 3000/300 3000/300 Recon Option Plus Plus Plus Full Recon Option IQ Enhance Slice Thickness (mm) 0.625 0.625 0.625 0.625 Interval (mm) 0.375 0.375 0.375 0.312 Recon 3: DFOV 18 18 18 18 18 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) 1.25 1.25 1.25 1.25 1.25 Interval (mm) 0.75 0.75 0.75 0.625 0.75
95 Revised 7/22/09 (Gentry/Ranallo) Lumbar Spine: (Adult Routine) (Protocol: # 7.1) Billing: Setup: DFOV: 1. CT lumbar spine without, or with, or without and with 2. Contrast if used 1. Patient Supine, AP and lateral scouts, no gantry angle 2. Extend the scouts to include the aortic arch for smart prep if IV contrast is to be used. 3. Non-contrast unless otherwise protocoled 4. Scan from the top of T12 to the top of S2 5. Post myelography patients: Please remember to roll the patient 360 degrees before scanning to distribute the contrast evenly in the spinal canal. Preferred 17 cm (Range 16-18 cm) Contrast: 1. Injection parameters: 2. Volume: 100 ml of 240 mg/ml nonionic contrast (use 150 ml of 240 mg/ml if a CT of the head will also be obtained). 3. Injection Rate: Adults: 3.5 ml/sec 4. Smart prep over the aortic arch. 5. CT scan delay after arrival of contrast in aortic arch: 10 sec (8 slice scanners), 15 sec (16 slice scanners), 20 sec (64 slice scanners) For Large Patients: Increase scan time to 1.0 sec on CT1, CT3, CT4, and ER CT. Raise kV to 140 kV on CT2, East & RP CT. For VERY large patients, increase scan time to 1.0 sec and increase kV to 140 kV on CT1, CT3, CT4, and ER CT. Recons & Reformats: 1. All 2-D reformats described below are to be done as 2 mm x 2 mm reformats. Do them in the coronal and sagittal planes. 3. If this is an exam solely with contrast or solely without contrast: Do 2D-reformats using both the standard 1.25 mm images (Recon 1) AND the bone 0.625 mm images (Recon 2) 3. If this is a “with & without” contrast study: Do not do Recons 2 and 3 on the contrast scan. Do 2D-reformats using the standard 1.25 mm images (Recon 1) only from the contrast series AND also do 2mm x 2mm reformats using the bone 0.625 mm images (Recon 2) from the non-contrast series. 4. Do not send the 0.625 mm (Recon 2) bone images to PACS.
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: 43 Revised 7/22/09 (Gentry/Ranallo)
Page 53 and 54: Sinuses (Diagnostic): (Adult and Pe
Page 93: 93 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 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

Create successful ePaper yourself

Delete template?

Save as template?