LIVER CT C+ (last updated 07/28/2015, last reviewed 02/07/2022)
INDICATION: Hepatic mass, hemangioma, cirrhosis, hepatitis B/C, Primary Sclerosing Cholangitis (PSC), Cholangiocarcinoma
SERIES
- 3mm Axial (Pre, Art, Portal, Equil)
- 3mm Coronal (Art, Portal)
- 3mm Sagittal (Art, Portal)
| | Precontrast | Arterial | Portal Venous | Equilibrium |
|
POSN/MODE
|
supine/helical |
supine/helical |
supine/helical |
supine/helical |
|
kV/mA/rot time
|
per scanner protocol
|
per scanner protocol
|
per scanner protocol
|
per scanner protocol |
|
SLICE THKN
|
3mm |
3mm |
3mm |
3mm |
|
PITCH
|
0.6 to 1.0 |
0.6 to 1.0 |
0.6 to 1.0 |
0.6 to 1.0 |
|
KERNAL
|
std |
std |
std |
std |
|
SFOV
|
300 mm |
300 mm |
300 mm |
300 mm |
|
COVERAGE
|
liver |
liver |
diaphragm -> pubic symphysis |
liver |
|
ACQUISITION
|
craniocaudal |
craniocaudal |
craniocaudal |
craniocaudal |
|
ORAL CONTR
|
water |
water |
water |
water |
|
IV CONTRAST
|
no |
125 mL Isovue 300 30 mL saline |
yes |
yes |
|
INJN RATE
|
--- |
4 mL/sec |
--- |
--- |
|
SCAN DELAY
|
--- |
bolus tracking (generally about 25 to 30 sec delay) |
30 sec after arterial ~65 sec after injn |
3 to 5 min after injn |
|
RESPIRATION
|
Inspiration |
Inspiration |
Inspiration |
Inspiration |
|
POSTPROC
|
--- |
3mm Cor and Sag |
3mm Cor and Sag |
--- |
NOTES: Give water (not oral contrast) 1-2 cups just prior to scanning the patient in order to distend the stomach.
Multi-planar imaging as necessary to stage the tumor.
