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Renal Ultrasound

Definition

This test uses sound waves to study the renal system. The renal system includes the kidneys, bladder and ureters. Ureters are the tubes that connect the kidneys to the bladder.

Reasons for Test

The test is done to look for:

  • Changes in the kidneys, bladder and ureters
  • View the flow of blood through vessels
  • Changes in kidney size or structure
  • Kidney stone, cyst, mass, or other obstruction in the kidney
  • Stones in the urinary tract
  • Changes in the ureters

The test is also done to look at:

  • Kidneys before doing a renal biopsy , which removes tissue from the kidney for examination
  • Blood flow to the kidneys using a doppler ultrasound

Possible Complications

There are no major complications associated with this test.

What to Expect

Prior to Test
Your doctor may do a physical exam. You must have a full bladder for the test. Do not empty your bladder until after the ultrasound.

Description of Test
You will lie on a table. Your doctor will put a gel on your belly over your bladder and kidneys. The gel helps the sound waves travel between the machine and your body. The ultrasound machine has a hand-held instrument called a transducer. It looks like a microphone or wand. The transducer is pushed against your skin where the gel was applied. The transducer sends sound waves into your body. The waves bounce off your internal organs and echo back to the transducer. The echoes are converted into images that are shown on a screen. The doctor examines the images. A photograph of them may be made.

After Test
The gel will be wiped from your belly.

How Long Will It Take?
The test takes about 30 to 45 minutes.

Will It Hurt?
No

Results
Your images will be viewed by your doctor or radiologist. Problems in your organs may be detected. Blockages may be seen in the ureters. In this case, more tests may be done to find the exact problem and cause.

Call Your Doctor

Call your doctor if you have any questions about the test, your condition, or your test results.


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St. Elizabeth's Medical Center
736 Cambridge Street
Brighton, MA 02135
617-779-6504

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