A renogram is a scan that looks at the kidneys over a period of time to evaluate function.

How do I prepare for the exam?

Be sure to drink lots of fluids the day and evening before the exam, so you are well hydrated.

What can I expect during the exam?

A renogram is performed by a specially registered technologist in molecular imaging.

You will lie on the exam table, and an injection of the isotope will be given through an IV. Continuous pictures will be taken of the kidneys for approximately 30 to 45 minutes, as they filter out the isotope and excrete it with urine. Your exam may take additional time if Lasix, a medicine that empties the kidneys, is administered.

What can I expect after the exam?

Unless your physician tells you otherwise, you may resume your normal activities after your molecular imaging scan. If any special instructions are necessary, you will be informed by a technologist, nurse or physician before you leave the molecular imaging department.

Your scan will be read by a radiologist specially trained in molecular imaging. A written report will be sent to your physician, who will contact you with results.