ADRENAL CT INITIAL EVALUATION C+ (last updated 07/28/2015 , last reviewed 02/07/2022)
INDICATION: Adrenal mass, adrenal nodule, adrenal adenoma, pheochromocytoma, myelolipoma
SERIES
- 3mm Axial (noncon, portal, delayed)
- 3mm Coronal (noncon, portal, delayed)
- 3mm Sagittal (noncon, portal, delayed)
| | NONCONTRAST | PORTAL VENOUS | DELAYED |
|
POSITIONING/MODE
|
supine/helical |
supine/helical |
supine/helical |
|
kV/mA/rot time
|
per scanner protocol CareDose/iDose/ASIR Care kV 120 to 140 kVp </= 1 sec |
per scanner protocol CareDose/iDose/ASIR Care kV 120 to 140 kVp </= 1 sec |
per scanner protocol CareDose/iDose/ASIR Care kV 120 to 140 kVp </= 1 sec |
|
SLICE THICKNESS
|
3mm |
3mm |
3mm |
|
PITCH
|
1 to 1.5 |
1 to 1.5 |
1 to 1.5 |
|
KERNAL
|
std |
std |
std |
|
SFOV
|
300-350 mm |
300-350 mm |
300-350 mm |
|
COVERAGE
|
adrenals |
diaphragm ->iliac crest or diaphragm -> pubic symp |
adrenals |
|
ACQUISITION
|
craniocaudal |
craniocaudal |
craniocaudal |
|
ORAL CONTRAST
|
water |
water |
water |
|
IV CONTRAST
|
none |
100 mL Isovue 300 30 mL saline |
yes |
|
INJECTION RATE
|
--- |
2.5 mL/sec |
--- |
|
SCAN DELAY
|
--- |
65sec |
10 min |
|
RESPIRATION
|
Inspiration |
Inspiration |
Inspiration |
|
POSTPROCESSING
|
3mm Cor and Sag |
3mm Cor and Sag |
3mm Cor and Sag |
NOTES:
Give 1-2 cups of water just prior to scanning the patient in order to distend the stomach.