CT Protocols: (Brain, ENT, Spine, Vascular) - Department of Radiology
CT Protocols: (Brain, ENT, Spine, Vascular) - Department of Radiology
CT Protocols: (Brain, ENT, Spine, Vascular) - Department of Radiology
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5 Revised 7/22/09 (Gentry/Ranallo)<br />
Adult Head: Routine (Helical Mode) (Protocol # 1.1)<br />
Billing: 1. <strong>CT</strong> Head without, or with, or without and with<br />
2. Contrast if used<br />
Setup: 1. Supine, AP and lateral scouts, no gantry angle<br />
2. Helical mode should be used routinely for adult head <strong>CT</strong> scans. Only use axial mode<br />
when you cannot move the patient’s head into proper position (trauma, cervical<br />
collar, rigid neck).<br />
3. Patient Positioning: Tilt the patients head so that a line connecting the lateral<br />
canthus <strong>of</strong> the eye and the EAC is perpendicular to the <strong>CT</strong> tabletop (see below). Use<br />
axial mode and angle the gantry if you cannot place the patient’s head within 15<br />
degrees <strong>of</strong> the proper setup angle.<br />
4. Start scans at the bottom <strong>of</strong> C1 and scan through the top <strong>of</strong> the head<br />
DFOV: Preferred 20 cm (Range 18-22)<br />
Contrast: 1. 150 ml <strong>of</strong> 240 mg/dl non-ionic contrast @ 0.6 ml/sec (4.2 minutes)<br />
2. Begin scanning as soon as contrast injection is finished<br />
Other Info:
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