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

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12 Revised 7/22/09 (Gentry/Ranallo) Head: Axial Adult Non-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 0.9 0.6 0.6 0.9 Detector Coverage (mm) Beam Collimation (mm) 10 10 10 10 10 Detector Rows 16 16 16 16 8 Number of Images per Rotation 2i 2i 2i 2i 2i 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) 5 5 5 5 5 Scan FOV Head Head Head Head Head kV 120 120 120 120 120 mA 670 420 630 630 420 Recon 1: DFOV 22 22 22 22 22 Recon Type Soft Soft Soft Soft Soft WW/ WL 80/25 80/25 80/25 80/25 80/25 Recon 2: DFOV 22 22 22 22 22 Recon Type Bone Plus Bone Plus Bone Plus Bone Plus Bone Plus WW/ WL 3000/300 3000/300 3000/300 3000/300 3000/300 Slice Thickness (mm) 2.5 2.5 2.5 2.5 2.5 Head: Axial Adult 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) 1.0 0.9 0.8 0.8 0.9 Detector Coverage (mm) Beam Collimation (mm) 10 10 10 10 10 Detector Rows 16 16 16 16 8 Number of Images per Rotation 2i 2i 2i 2i 2i 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) 5 5 5 5 5 Scan FOV Head Head Head Head Head kV 100 120 100 100 120 mA 670 400 670 670 400 Recon 1: DFOV 22 22 22 22 22 Recon Type Soft Soft Soft Soft Soft WW/ WL 90/30 90/30 90/30 90/30 90/30 Recon 2: 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 Slice Thickness (mm) 2.5 2.5 2.5 2.5 2.5
13 Revised 7/22/09 (Gentry/Ranallo) Pediatric Head: Routine (Helical Mode) (< 6 years of age) (Protocol # 11.1 & 11.2) Billing: 1. CT Head without, or with, or without and with 2. Contrast if used Setup: 1. Supine, AP and lateral scouts, no gantry angle 2. Helical mode should be used routinely for pediatric head CT scans. Only use axial mode when you cannot move the patient’s head into proper position (trauma, cervical collar, rigid neck). 3. Patient Positioning: Tilt the patients head so that a line connecting the lateral canthus of the eye and the EAC is perpendicular to the CT tabletop (see below). Use axial mode and angle the gantry if you cannot place the patient’s head within 15 degrees of the proper setup angle. 4. Start scans at the bottom of C1 and scan through the top of the head Preferred: Preferred 16 cm (Range 14-18 cm) Contrast: 1. 1 ml / pound (2 ml/kg) of 240 non-ionic contrast @ 0.6 ml/sec 2. Begin scanning as soon as contrast injection is finished Patient Age: Choose the CT scan factors on the scanner for the proper age range of the patient 1. Child: (3 – 6 years) 2. Infant: (0 – 3 years) Other Info:
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Vascular Imaging: Stroke Deluxe: (A
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1. CTA (High-res COW) 2. CTA (Strok
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CT Protocols: (Brain, ENT, Spine, Vascular) - Department of Radiology

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