Imaging Techniques
This imaging modality is commonly used to evaluate the nature of renal masses, distinguishing cystic from solid lesions.
ultrasound
This ultrasound finding, characterized by echogenic foci with posterior shadowing, is diagnostic of this condition in the kidney.
nephrolithiasis (kidney stones)
What is an intravenous urogram (IVU)?
This CT imaging study provides a 3D view of the urinary tract at specific intervals post-contrast injection.
This CT finding, a striated pattern of contrast in the renal parenchyma, is indicative of this infection.
acute pyelonephritis
What is a renal arteriogram?
This angiographic technique visualizes the main renal artery and its branches such as arcuate and interlobar arteries.
In urothelial carcinoma, this imaging modality is the most sensitive for detecting tumors in the renal pelvis or ureters.
CT urography
What is retrograde pyelography?
This imaging technique involves injecting contrast material retrograde into the ureter to evaluate the upper urinary tract, often used when IV contrast is contraindicated.
The "filling defect" in the urinary bladder on fluoroscopy often indicates the presence of this pathological condition.
bladder tumor or blood clot
In urothelial carcinoma, this imaging modality is the most sensitive for detecting tumors in the renal pelvis or ureters.
CT urography
On CT, this condition presents as perinephric stranding, delayed nephrogram, and possible gas formation within or around the kidney.
emphysematous pyelonephritis