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Contact Info


  •   +011-47252025, 47252075 (centralised)

  •   info@cityimaging.in

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    01142143291

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    08800799544



DTPA SCAN

What is a DTPA scan?

Renal DTPA scan is a process for diagnosis and evaluation of kidney functioning. It involves intravenous administration of radiopharmaceutical material to assess the drainage pattern of kidneys and to find out if any area is not functioning properly.

What is the full form of DTPA?

Pentetic acid or diethylenetriaminepentaacetic acid (DTPA) is an aminopolycarboxylic acid consisting of a diethylenetriamine backbone with five carboxymethyl groups.

What is DTPA Renogram test?

DTPA Renogram, also known as

  • MAG3,
  • Renal scan,
  • DTPA,
  • Captopril Challenge,
  • DTPA with Ace Inhibitor,
  • DTPA with GFR.

A renogram can be performed to assess relative renal function, evaluate possible urinary obstruction, or assess narrowing of the renal artery in patients with high blood pressure.

Is DTPA scan safe?

There are no known associated risks involved in the DTPA or MAG3 scan itself. The test involves ionising radiation, which is relatively small and similar to many other routine medical imaging tests.

How does DTPA work?

DTPA is a kind of medicine called a chelating agent. Chelating agents work by binding and holding on to radioactive materials or poisons that get into the body. Once bound to a radioactive material or poison, the chelating agent is then passed from the body in the urine.

Why would my doctor refer me to have this procedure?

Your doctor will refer you for a nuclear medicine renal scan to look at the blood supply, function and flow of urine from the kidneys if it is suspected that there are problems with how your kidneys are working. Reduced kidney function may be shown in abnormal blood tests, high blood pressure or abnormal results obtained from the urine itself.

Are there any after effects of a renal scan?

If a dose of a frusemide or captopril is given, you may need to empty your bladder more often than usual for that day. It is important you drink plenty of fluids after having the scan to avoid dehydration. Some people have profound low blood pressure after captopril. Please let the staff of the facility where you are having the scan know if you feel dizzy, light headed or unwell.

How long does a renal scan take?

The test itself will take approximately 30–60 minutes. The time varies because the rate at which the kidneys function will differ for each individual.

What are the risks of a renal scan?

There are no known associated risks involved in the DTPA or MAG3 scan itself.
The test involves ionising radiation, which is relatively small and similar to many other routine medical imaging tests. For more detailed information (see InsideRadiology: Radiation risk of medical imaging for adults and children). As with any medications, there is a small chance of an allergic or adverse reaction. Please discuss this with your doctor or with the nuclear medicine staff carrying out the scan if you have any concerns.

What are the benefits of a renal scan?

This test provides information on the blood supply, function and flow of urine from the kidneys.
A DTPA or MAG3 scan can help your doctor assess individually how each of your kidneys is working and to look for a cause of high blood pressure or other abnormal test result.

Who does the renal scan?

A nuclear medicine technologist will give the injection, carry out the scan and process the images. A nuclear medicine specialist (specialist doctor) will review the images along with your medical history and provide a report for your referring doctor.

Where is a renal scan done?

A DTPA or MAG3 scan is carried out in a nuclear medicine department at all centres of City Imaging and clinical Labs.