What is a renal ultrasound study?
Ultrasound studies use high frequency sound waves to produce images of various parts of the body. Ultrasound does not use any dyes or ionizing radiation (x-rays), and no intravenous line is needed. It is a painless exam. Renal ultrasound provides images of the kidneys. The technologist will be concentrating on the blood flow from your aorta, the main artery in your body, to your kidneys located on either side of your abdomen.
What are some of the indications for renal ultrasound?
Renal ultrasounds, also called renal sonograms or renal duplex, are most often performed to detect a narrowing in the renal arteries, which provide blood flow to the kidneys. Uncontrolled hypertension (high blood pressure) and renal insufficiency (decreased kidney function) are common indications for a renal ultrasound. Patients who have undergone renal stenting may also receive follow-up renal ultrasound exams.
What instructions will I have prior to the renal ultrasound study?
You will be asked not to eat or drink 6 hours prior to your study. This preparation allows for optimal image quality. Do take your medicines with a sip of water. There are no restrictions after the test.
How is a renal ultrasound performed?
You will be asked to remove your shirt and wear a gown with the opening in the back. During the exam you will be lying face up on an examination table. A clear gel is applied to the abdomen which allows the ultrasound waves to travel through the body. A small wand-like instrument called a transducer is placed firmly against the skin and images are recorded by the technologist. You may hear noises during the exam, which is the sound of blood flowing through the arteries. This exam takes approximately 35 - 45 minutes.