Kidney imaging morphology; with vascular flow
CPT4 code
Name of the Procedure:
Kidney Imaging Morphology; with Vascular Flow (Common Name: Renal Doppler Ultrasound)
Summary
A Renal Doppler Ultrasound is a non-invasive imaging test that uses high-frequency sound waves to create images of the kidneys and their blood vessels. This helps to evaluate the structure and blood flow in and around the kidneys.
Purpose
The procedure addresses conditions affecting kidney structure and blood flow, such as renal artery stenosis, kidney stones, tumors, or congenital abnormalities. The goals are to diagnose, monitor, or rule out these conditions by providing detailed images and flow information.
Indications
- High blood pressure not responding to treatment
- Suspected blockage or narrowing of the renal arteries
- Kidney function abnormalities
- Presence of a mass or cyst in examinations
- Pre-transplant assessment or post-transplant monitoring
Preparation
- Fasting for 6-8 hours before the procedure
- Drink water to stay hydrated and have a full bladder
- Inform the healthcare provider of any medications or health conditions
Procedure Description
- The patient lies on an examination table.
- A gel is applied to the abdomen and back to help transmit sound waves.
- A transducer is moved over the kidney area to capture images.
- Doppler technology adds a measurement of blood flow through the renal arteries and veins.
- The images are reviewed and recorded for medical analysis.
No anesthesia or sedation is usually required.
Duration
The procedure typically takes between 30 to 60 minutes.
Setting
Performed in a hospital radiology department, outpatient clinic, or specialized imaging center.
Personnel
- Radiologist or trained ultrasound technologist
- Nurses or medical assistants (may assist with patient preparation)
Risks and Complications
- Generally very safe with minimal risks
- Rarely, minor discomfort from pressure of the transducer
Benefits
- Non-invasive with no exposure to radiation
- Provides detailed images and real-time blood flow data
- Helps in the early detection and treatment of kidney-related issues
Recovery
- No specific recovery time needed
- Normal activities can be resumed immediately after the procedure
- Drink plenty of fluids after the test, especially if fasting was required
Alternatives
- CT Scan or MRI: Provides more detailed imaging but involves radiation (CT) or may not be suitable for all patients (MRI).
- Renal Angiography: An invasive procedure with higher risk but may be more detailed.
Patient Experience
Patients may feel a slight cold from the gel and mild pressure from the transducer. Most report little to no discomfort. Pain management typically isn't necessary due to the non-invasive nature, but staff are available to ensure comfort throughout.