CT ORBITS C+ (last updated 10/28/2020, last reviewed 10/28/2020)
INDICATION: Orbital cellulits, pain, proptosis, swelling, mass, lymphoma, pseudotumor, abscess, vascular malformation, vision loss, diplopia, complications of sinusitis.
(All indications except Trauma/Fracture, Graves, Bony abnormality should be performed with contrast.)
SERIES
- 3mm Axial soft tissue and bone
- 2mm Coronal soft tissue and bone
- 2mm Sagittal soft tissue and bone
| | |
|
POSITIONING/MODE
|
supine/helical |
|
kV/mA/table rot
|
120 kV/auto mA/<1 sec |
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DETECTOR COLLIMATION
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16 x 0.75mm (S16) 64 x 0.6mm (D64) |
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SLICE THICKNESS
|
3mm |
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PITCH
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0.45 (S16) 0.7 (D64) |
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KERNAL
|
bone (H70h very sharp) soft tissue (H40s medium) |
|
SFOV
|
<25 cm |
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COVERAGE
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maxillary sinus -> frontal sinus |
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ACQUISITION
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caudocranial |
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IV CONTRAST
|
80 mL Isovue 300 |
|
INJECTION RATE
|
2 mL/sec |
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SCAN DELAY
|
30 to 60 sec |
|
POSTPROCESSING
|
2mm Coronal soft tissue and bone 2mm Sagittal soft tissue and bone |