RENAL MASS CT C+
(last updated 09/15/2025, last reviewed 09/15/2025)
INDICATION: Renal mass, Renal cyst, Renal cell carcinoma. Oncocytoma, Angiomyolipoma
SERIES
- 3mm Axial (pre, post)
- 3mm Coronal (pre, post)
- 3mm Sagittal (pre, post)
TECHNICAL PARAMETERS
POSITIONING/MODE: supine / axial
kV/mA/rotation time: per scanner protocol, CareDose/iDose/ASIR, Care kV; <1 sec
PITCH: </=1.5
SINGLE COLLIMATION WIDTH: 0.625 mm
SLICE THICKNESS: 3 mm
KERNAL: std soft tissue
SFOV: large
COVERAGE: Precontrast – kidneys
Nephrographic phase – diaphragm -> pubic symphysis (AP) / iliac crests (A)
ACQUISITION: craniocaudal
IV CONTRAST: yes
INJECTION RATE: 3 to 4 mL/sec
SCAN DELAY: nephrographic phase – 90 to 100 sec
IV CONTRAST DOSE: 75 to 100 mL
ORAL CONTRAST: water
POSTPROCESSING: 3 mm coronal, 3 mm sagittal precontrast and postcontrast
NOTES: Give 1-2 cups of water just prior to scanning the patient in order to distend the stomach.