Yashoda Hospitals > Diagnostics > Renal Scan

What is a renal scan/kidney scan?

A renal scan/kidney scan is simply imaging of the kidney. The scan involves using a radioactive substance, which can produce brighter images of the kidneys and the urinary tract when injected into the body. The uses of the test are centred around finding anatomical defects in kidney function or localisation of any cysts. The kidney images are produced with the help of X-rays, CT, or MRI. During the test, you might be asked to stay still as the camera records the internal pictures of your kidneys. The side effects of the test are limited to radioactive exposure. 

 

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    References

      Renal Scan: Purpose, Procedure, and Results

      https://www.webmd.com/a-to-z-guides/kidney-scan-what-to-expect

    Frequently Asked Questions

    A renal scan/kidney scan is used to capture images of your kidneys through X rays or CT scans. The doctor may order a renal scan to visualise any blockage in blood flow or urine flow. The uses of renal scan can also be for localisation of tumours, abscesses and other structural disturbances in the kidney. 

    The test results of a scanning test are best understood by the radiologist. The images can be used to see any blockage in the urinary tract or in the arteries. The doctor will also try to find any tumour disease process within the kidneys. To get a second opinion on your test results, contact us now. 

    Your doctor may ask you to get a renal scan/ kidney scan if you have been experiencing problems with urination or for high-risk patients with diabetes, hypertension, or cancer. A renal scan can help the doctor rule out any disease process in the kidneys or find blockages in blood or urine flow if any. 

    A radioactive tracer substance will be injected into your body during the test. You will be asked to lie down or sit perfectly still as a camera records the images through X-rays. A catheter can also be inserted to empty your bladder completely. Your doctor may place you on additional diuretics before the tests. 

    The time for the test results can vary depending on the type of scan that has been performed. A renal ultrasound result can be received within 24 hours or shorter if there is an emergency. Generally, a renal scan does not take longer than 1-2 days for the test results to arrive.

    Yes. A renal ultrasound is a reliable diagnostic method to visualise any changes within the kidney. It can show increased or decreased size of the kidneys, presence of tumours or infections within the kidney, or obstruction that might lead to fluid collection. Book an appointment with us for your renal ultrasound. 

    A CT scan is generally considered the best scan for the kidneys. It can produce bright images of the kidney with the help of a radioactive substance and clearly show any internal bleeding, obstruction, disease process, cysts, or tumours. The side effects of the CT scan are the radioactive exposure that comes with X-rays. 

    No special preparations are required for a renal scan procedure. Your doctor will explain the procedure before injecting the radioactive substance into your body. Inform the doctor about any kind of claustrophobia that you might experience with the imaging devices. You might be asked to void your bladder entirely before the scan.

    A doctor generally orders a kidney scan to rule out any kind of infection or cancer in the kidneys and to assess their structural integrity. A renal scan may be ordered for high-risk patients to find out the real cause of hypertension or infection. A kidney scan can also help the doctor locate obstruction to urine flow. 

    Fasting is not required for a renal scan. However, your urinary bladder must be entirely empty before a renal scan. For this, the doctor may place you on diuretics or ACE inhibitors. During the test, a catheter can also be inserted for the same. You can book an appointment with us for your renal scan.