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

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20 Revised 7/22/09 (Gentry/Ranallo) Head: Helical Scan with Angled Axial Reformations - 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 0.7 0.5 0.5 0.8 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) 0.625 0.625 0.625 0.625 1.25 Interval (mm) 0.375 0.375 0.375 0.312 0.75 Scan FOV Head Head Head Small Head Head kV 80 80 80 80 80 Smart mA/ Auto mA Range 110-570 80-390 110-550 100-520 80-390 Noise Index 6.6 6.6 6.6 6.6 6.6 (Manual mA) 370 260 360 340 260 Recon 1: DFOV 20 20 20 20 20 Recon Type Standard Standard Standard Standard Standard WW/ WL 80/25 80/25 80/25 80/25 80/25 Recon Option Plus Plus Plus Full Plus Recon Option Recon 2: IQ Enhance DFOV 20 20 20 20 20 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) 0.625 0.625 0.625 0.625 1.25 Interval (mm) 0.375 0.375 0.375 0.312 0.75
21 Revised 7/22/09 (Gentry/Ranallo) Pediatric Head: (Axial Mode) (Less than 6 years of age) (Protocol # 11.5 & 11.6) Billing: 1. CT Head without, or with, or without and with 2. Contrast if used Setup: 1. Supine, AP and lateral scouts 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). This mode can also be used in unstable patients in the emergency department when the CT scan time must be expedited. 3. Patient Positioning: Using the lateral scout image, angle the gantry so that it is parallel to a line connecting the infraorbital rim with the opisthion (see below). 4. Start scans at the bottom of C1 and scan through the top of the head DFOV: 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: Other Info: 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)
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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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