Renal (Kidney) Scan

nuclear medicine renal scan

A renal or kidney scan is used to evaluate kidney blood flow and function, kidney failure, kidney obstruction and to follow up on kidney transplants. Renal scans may also be used to screen and diagnose renovascular hypertensive disease. Most common indications for kidney scans are hydronephrosis, UTI and suspected urethral and ureteral obstruction.

  • Before Arriving for Your Exam, drink two 8-ounce glasses of fluids 1-2 hours prior to the exam. If you are on fluid restriction, follow your physician's order.

  • If your test involves the use of Lasix or Captopril, you should avoid taking these medications or similar medications on the day of the exam.

  • You must consult with your physician before discontinuing your medications.

  • When you arrive, the technologist will explain your specific procedure.

  • Once in the exam room, you will be asked to lie on your back on the imaging table.

  • The technologist will inject a radioactive tracer in your vein and then acquire images of your kidneys.

  • At the end of the procedure, the radiologist will interpret and a report will be sent to your physician. Your physician will then contact you with the result.