What does delayed Nephrogram mean?
What does delayed Nephrogram mean?
A delayed nephrogram, commonly described on plain film urography, but also visible on CT urography, is when there is absence or reduction of the normal renal parenchymal enhancement on the nephrographic phase images.
What does the medical term Nephrogram mean?
: an X-ray of the kidney.
What is a Nephrogram test?
What is a Nephrogram? It is a diagnostic test performed in the nuclear medicine laboratory. A special radioactive drug, which has the property to be taken up and secreted by the kidneys, is administered intravenously (i.v.). Then, a special camera is placed behind the body at the height of the renal region.
What is renal cortical enhancement?
The cortical rim sign describes the thin, viable rim of subcapsular cortex seen on contrast-enhanced CT or MRI in major renal vascular compromise including: renal artery obstruction from embolism, thrombosis or dissection.
What is obstructive uropathy?
Obstructive uropathy is a condition in which the flow of urine is blocked. This causes the urine to back up and injure one or both kidneys.
What is a Phlebogram?
1 : a tracing made with a sphygmograph that records the pulse in a vein. 2 : a radiograph of a vein after injection of a radiopaque medium.
What is the meaning of Encephalogram?
: an X-ray picture of the brain made by encephalography.
What is the renal cortex?
The renal cortex is the outer part of the kidney. It contains the glomerulus and convoluted tubules. The renal cortex is surrounded on its outer edges by the renal capsule, a layer of fatty tissue. Together, the renal cortex and capsule house and protect the inner structures of the kidney.
When is a delayed nephrogram seen on a CT scan?
A delayed nephrogram, commonly described on plain film urography, but also visible on CT urography, is when there is absence or reduction of the normal renal parenchymal enhancement on nephrographic phase images.
What’s the difference between a delayed nephrogram and a bilateral?
A delayed nephrogram is characteristically unilateral and is usually distinguished from bilateral delayed nephrograms, which are termed persistent nephrograms. Normal enhancement of the renal parenchyma involves contrast passing via the renal arterial bed to the glomeruli and nephrons before being finally concentrated into the collecting system.
When to use a striated nephrogram in radiology?
In modern radiology, the nephrogram patterns are more commonly observed on CT urography and on plain film radiography following intravenous injection of an iodinated contrast agent. 1. Zagoria RJ. Genitourinary radiology, the requisites. Mosby Inc. (2004) ISBN:0323018424. Read it at Google Books – Find it at Amazon 2.
When does a persistent nephrogram need to be performed?
Persistent nephrograms occur when intravenous contrast media is retained by both kidneys for more than 3 minutes. Persistent nephrograms are characteristically bilateral and are usually distinguished from delayed nephrograms, which occur unilaterally.