Acute flank pain
Recommended: CT Abdomen/Pelvis without contrast (stone protocol) is the preferred imaging study for acute flank pain. First-line for evaluating acute flank pain.
Recommended study
CT Abdomen/Pelvis without contrast (stone protocol)
First-line for evaluating acute flank pain. Ultrasound first in pregnancy and pediatrics. Stone protocol uses thin slices and low dose.
If the default doesn't apply
Pregnancy
US
Renal Ultrasound + KUB if needed
No contrast
Pediatrics
US
Renal Ultrasound
No contrast