CT SELLA/CAVERNOUS SINUS C+ (last updated 07/15/13, last reviewed 10/28/2020)
INDICATION: Pituitary adenoma, Sellar mass, suprasellar mass, Cavernous sinus fistula, Cavernous sinus thrombosis, infection
SERIES
- supine axial soft tissue and bone
- prone (coronal) soft tissue and bone
| | supine postcontrast | prone post sella |
|
POSITIONING/MODE
|
supine helical |
prone sequential |
|
kV/mAs/table rot
|
120 kV/140 mAs/<1 sec |
120 kV/140 mAs/<1 sec |
|
DETECTOR COLLIMATION
|
16 x 0.75mm (S16) 64 x 0.6mm (D64) |
12 x 1.5mm (S16) 6 x 3.0mm (D64) |
|
SLICE THICKNESS
|
2mm |
1mm |
|
PITCH
|
1 to 1.5 |
1 to 1.5 |
|
KERNAL
|
soft tissue and bone (U30v med sm, U70v Sharp) |
soft tissue and bone (U30v med sm, U70v Sharp) |
|
SFOV
|
~14cm |
~14cm |
|
COVERAGE
|
orbital floor -> 3cm above sella |
Include entire sella |
|
ACQUISITION
|
caudocranial |
caudocranial |
|
IV CONTRAST
|
80 mL Isovue 300 |
yes |
|
INJECTION RATE
|
2 mL/sec |
---- |
|
SCAN DELAY
|
30 sec |
immediately to follow |
|
POSTPROCESSING
|
2mm Coronal and Sagittal bone and soft tissue |
(bone and soft tissue) |
