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

More documents

Recommendations

Info

Pituitary Gland and Cavernous Sinus: (Protocol – Adult: # 2.6 – Pediatric: # 12.11 & 12.12) 48 Revised 7/22/09 (Gentry/Ranallo) Billing: Setup: Exam: DFOV: For Part 2: 1. CT Head with and without contrast; CT Sella with contrast 2. Contrast 1. Patient Supine, AP and lateral scouts, no gantry angle 2. Extend the scouts to include aortic arch for smart prep. 3. Use 64 slice scanners if possible 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). Part 1: CT Head Without Contrast (do as in routine CT head) Part 2: Pituitary CT with Contrast (as outlined below) - Use a DFOV of approximately 14 cm (include the orbit and the sella - Perform helical axial scans between yellow lines as diagramed at bottom of page - Use a bolus contrast injection as listed below: 1. Adults: 150 ml of 240 mg/ml nonionic contrast at 3.5 ml/sec 2. Pediatrics: 1 ml/lb (2 ml/kg) of 240 nonionic at 2.0 to 2.5 ml/sec - Smart prep over the aortic arch and begin scanning 15 seconds (adults) or 8 seconds (pediatrics) after arrival of contrast in the arch - Begin Part 3 when all of contrast is in. Part 3: CT Head With Contrast (do as in routine CT head) Head: Pituitary: Preferred 20 cm (Range 18-22 cm) 14 cm 1. Only send the Standard 1.25 mm (Recon 1) images to PACS. Do not send the Recon 2 bone images to PACS. 2. Do 2 mm x 2 mm 2D-reformats using both the standard 1.25 mm (Recon 1) images AND the bone 0.625 mm (Recon 2) images as outlined below.
49 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 80 10.0 2.5 50 15.0 Pituitary Gland and Cavernous Sinus 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 0.9 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 Head Head kV 100 100 100 100 100 Smart mA/ Auto mA Range 240-750 140-420 230-750 210-700 140-420 Noise Index 6.6 6.6 6.6 6.6 6.6 (Manual mA) 620 370 600 570 370 Recon 1: DFOV 14 14 14 14 14 Recon Type Standard Standard Standard Standard Standard WW/ WL 350/20 350/20 350/20 350/20 350/20 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 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) 0.625 0.625 0.625 0.625 1.25 Interval (mm) 0.375 0.375 0.375 0.312 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 11 and 12: Adult Head: (Axial Mode) (Protocol
Page 47: 47 Revised 7/22/09 (Gentry/Ranallo)
Page 53 and 54: Sinuses (Diagnostic): (Adult and Pe
Page 99 and 100:
99 Revised 7/22/09 (Gentry/Ranallo)
Page 101 and 102:
101 Revised 7/22/09 (Gentry/Ranallo
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Vascular Imaging: Stroke Deluxe: (A
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Appendix # 2 129 Revised 7/22/09 (G
Page 131 and 132:
Page 133 and 134:
Suggestions for ROI Placement 133 R
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
1. CTA (High-res COW) 2. CTA (Strok
Page 141 and 142:
Page 143:
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?