Updated November 14, 2026 · By the MRIScanNearMe.com Team
Quick answer: A prostate MRI is often ordered after a high PSA result to look for areas that could be cancer and help decide whether a biopsy is needed. Findings are scored with PI-RADS from 1 to 5. With contrast, the scan typically takes about 45 minutes, according to Mayo Clinic. Only a biopsy can confirm cancer.
If your PSA came back high, your doctor may suggest a prostate MRI before deciding on a biopsy. It's a common next step, and knowing how it works can take some of the worry out of it. Here's why the scan is done, what the report means, and how to prepare. When you're ready, you can compare MRI centers near you.
Why is a prostate MRI done?
Most often, to look for signs of prostate cancer after an abnormal PSA test. Mayo Clinic explains that a high PSA result may lead a clinician to recommend prostate MRI, and that the MRI result helps decide whether a biopsy is needed.
Mayo Clinic lists other uses too: planning treatment after a cancer diagnosis, checking for missed cancer before active surveillance, and looking for cancer that has come back. The scan can also show non-cancer conditions such as an enlarged prostate (BPH) and prostatitis, which is inflammation often caused by infection.
How does a prostate MRI help with a biopsy?
It shows the biopsy team where to look. Mayo Clinic says that if the MRI shows areas of concern, the biopsy can focus on those areas, sometimes called a fusion biopsy. The Prostate Cancer Foundation describes fusion biopsies as combining MRI with ultrasound to guide the needle to the most suspicious spots, and notes they're increasingly offered at select centers.
The Prostate Cancer Foundation also points out that MRI quality varies, and suggests having the MRI and fusion biopsy done and read at a high-volume center with experience in prostate MRI when possible. That's worth asking about when you compare locations.
What do PI-RADS scores mean?
PI-RADS is a 1-to-5 scale radiologists use to rate how likely a finding is to be clinically significant cancer. Higher numbers mean a higher likelihood. The Prostate Cancer Foundation says a score of 1 means clinically significant cancer is highly unlikely, while PI-RADS 4 or 5 lesions have a high probability of being clinically significant and typically call for a targeted biopsy.
Keep in mind what the scan can and can't tell you. Mayo Clinic is clear that a prostate MRI can't tell whether cancer is present; only a biopsy gives a definite answer. Terms on your report like lesion, restricted diffusion or low T2 signal can have causes other than cancer, so go over the report with your doctor.
How should I prepare for a prostate MRI?
Follow your imaging center's instructions closely, because prep varies. Mayo Clinic notes you may be asked to fast for a period, and that you can often take your usual medicines unless told otherwise. If a device called an endorectal coil will be used, you may be asked to do an enema beforehand.
- Tell the team about your medicines, supplements and allergies, including iodine and latex.
- Mention any implanted metal or devices, such as a pacemaker, defibrillator or clips.
- Don't wear anything made of metal to the appointment.
- Let them know if tight spaces make you anxious. If you're given a relaxing medicine, you'll need a driver and shouldn't drive or return to work that day.
Our MRI preparation guide covers the general checklist, and our comparison of open and wide-bore MRI may help if you're claustrophobic.
What happens during the scan?
Mayo Clinic says a prostate MRI with contrast typically takes about 45 minutes, and scans without contrast are often shorter. When contrast is used, gadolinium is given through a small IV in your hand or arm; people with kidney disease may need kidney testing first. Read more in our guide to MRI with or without contrast.
Some centers use an endorectal coil. Mayo Clinic explains it only goes a short way into the rectum, is covered and held in place by a small balloon, and may cause a feeling of pressure. Ask ahead whether your center uses one. As with any MRI, the machine is loud, and earplugs or music can help.
Frequently asked questions
Can a prostate MRI replace a biopsy?
No. Mayo Clinic says a prostate MRI can't tell whether cancer is present, and only a biopsy gives a definite diagnosis. The MRI helps decide whether a biopsy is needed and where to target it.
What does PI-RADS 4 mean?
PI-RADS scores run from 1 to 5. The Prostate Cancer Foundation says PI-RADS 4 or 5 lesions have a high probability of being clinically significant cancer and typically call for a targeted biopsy. Your doctor will explain your result and next steps.
How long does a prostate MRI take?
Mayo Clinic says a prostate MRI with contrast typically takes about 45 minutes. Scans without contrast are often shorter. Plan extra time for check-in and changing.
Does a prostate MRI use radiation?
No. It uses magnetic fields and radio waves. Mayo Clinic says there are no known harmful effects from them; metal in or on the body is the main safety concern.
Who gives me my prostate MRI results?
A radiologist reads the images, and the clinician who ordered the scan usually shares the results. Mayo Clinic notes the technologists running the scan can't tell you the results, and they may show up in your patient portal first.
Find an MRI near you
Ask each center whether it does prostate MRI regularly, whether it uses contrast or an endorectal coil, and whether it offers fusion biopsy. Search MRI centers near you, or start with a state page such as MRI centers in Texas.
Sources: Mayo Clinic: Prostate MRI (Mayo Clinic Care Network content); Prostate Cancer Foundation: How MRI Is Used in Prostate Cancer (last reviewed December 2023).
This article is for educational purposes and is not medical advice. Talk with your doctor about which scan is right for you.