What is a antegrade urography?

What is a antegrade urography?

An antegrade pyelogram is an imaging test to find a blockage (obstruction) in the upper urinary tract. Your urinary tract includes the kidneys, ureters, and bladder. The ureters are the narrow tubes that carry urine from the kidneys to the bladder.

How antegrade pyelogram is done?

An antegrade pyelogram is a type of x-ray used to diagnose an obstruction of the upper urinary tract. During the procedure, a contrast dye is injected into a portion of the ureter (narrow tube that carries urine from the kidney to the bladder) closest to the kidneys called the renal pelvis.

How do you perform an intravenous urography?

X-rays are taken of your urinary tract before any dye is injected. X-ray dye is injected through your IV line. X-ray images are taken at timed intervals as the dye flows through your kidneys to the ureters and into your bladder. Toward the end of the exam, you may be asked to urinate again.

How is a retrograde urethrogram performed?

You will lie on your back or side, and an x-ray of the urethra and bladder are taken. X-ray contrast agent (dye) is gently moved into your urethra. This may not be comfortable, but it doesn’t take long. More x-rays are taken with the dye to see your urethra more clearly.

Why is a retrograde pyelogram performed?

You may need a retrograde pyelogram if your healthcare provider thinks something is blocking your kidneys or ureters. It is also used to find a possible causes of blood in your urine. This may be a tumor, stone, blood clot, or narrowing (strictures).

What is IVU used for?

Intravenous urography (also known as intravenous pyelography) is an X-ray procedure which is used to assess problems in your kidneys, ureters, bladder and urethra. These structures make up your urinary tract.

Which contrast is used in IVU?

In an IVP exam, an iodine-containing contrast material is injected through a vein in the arm. The contrast material then collects in the kidneys, ureters and bladder, sharply defining their appearance in bright white on the x-ray images.

What is meant by intravenous urography?

(IN-truh-VEE-nus PY-eh-LAH-gruh-fee) A procedure in which x-ray images of the kidneys, ureters, and bladder are taken at regular times after a substance that shows up on x-rays is injected into a blood vessel.

When is a retrograde urethrogram used?

A retrograde urethrography is a routine radiologic procedure (most typically in males) used to image the integrity of the urethra. Hence a retrograde urethrogram is essential for diagnosis of urethral injury, or urethral stricture.

Which contrast is used for retrograde urethrogram?

Urethrography is most commonly performed via the retrograde injection of radiopaque contrast into the urethra to elucidate urethral pathology such as rupture of the urethra from trauma or urethral stricture.

What is retrograde urography?

A retrograde pyelogram is an imaging test that uses X-rays to look at your bladder, ureters, and kidneys. The ureters are the long tubes that connect your kidneys to your bladder. This test is usually done during a test called cystoscopy. It uses an endoscope, which is a long, flexible, lighted tube.

How is a retrograde Urethrogram performed?

Why IVP test is done?

An IVP can show your healthcare provider the size, shape, and structure of your kidneys, ureters, and bladder. You may need this test if your provider suspects that you have: Kidney disease. Ureter or bladder stones.

Why CT IVU is done?

Why it’s done. A CT urogram is used to examine the kidneys, ureters and bladder. It lets your doctor see the size and shape of these structures to determine if they’re working properly and to look for any signs of disease that may affect your urinary system.

Why is iodine used in contrast?

Iodine has a particular advantage as a contrast agent because the k-shell binding energy (k-edge) is 33.2 keV, similar to the average energy of x-rays used in diagnostic radiography 1. When the incident x-ray energy is closer to the k-edge of the atom it encounters, photoelectric absorption is more likely to occur.

What is CT IVU test?

A CT IVU involves you having a contrast medium (dye) injected into a vein to increase the quality of information obtained from the scan. The injection usually causes nothing more than a warm feeling passing around your body, a metallic taste in your mouth and occasionally a sensation of needing to urinate.

What is descending urethrogram?

In Descending Urethrography, a urinary catheter will be placed to your bladder to fill up the bladder with a solution containing contrast medium and then the catheter is removed. You will be asked to urinate, while X-rays will be taken at regular time intervals.

What is intravenous urography (IVU)?

Intravenous urography (IVU), also referred to as intravenous pyelography (IVP) or excretory urography (EU), is a radiographic study of the renal parenchyma, pelvicalyceal system, ureters and the urinary bladder. This exam has been largely replaced by CT urography .

What is the protocol for IVU in the ICU?

24.  The exact protocol for IVU will vary according to the department, however the standard protocol for IVU is summarized as: 1. Preliminary film 2. CM administration 3. Nephrographic film 4. 5 min renal film 5. Abdominal compression 6. 10 min Renal and upper urinary tract film 7. 15 min release film of ureter and bladder 8.

What is urography in radiology?

1.  Radiologic Investigations of the renal drainage, or collecting system are performed by various procedures classified under the general term Urography.  There are three technique for urography which are:  Intravenous Urography  Antegrade Urography  Retrograde Urography

What are the limitations of intracranial ultrasound (IVU)?

Limitations of IVU – It depends on kidney function – Do not differentiate solid or cystic lesion – Requires contrast medium and radiation. – Missing small stones.