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MR Enterography

MR Enterography, also known as Entero MRI, is a specialized exam that allows detailed assessment of the small intestine without exposure to radiation. It is particularly useful in the diagnosis and follow-up of inflammatory bowel diseases, such as Crohn’s disease.

What is MR Enterography?

MR Enterography is a magnetic resonance imaging technique that provides high-resolution images of the small intestine, using contrast and specific sequences that highlight the intestinal walls and adjacent tissues. It is a non-invasive exam, essential for the characterization of inflammation, strictures, fistulas and other intestinal changes.

What is the price of MR Enterography?

The price of MR Enterography is €275 when performed on a private basis. However, it can also be performed through several agreements, including:

  • ADSE: If MR Enterography is performed through ADSE, the patient only pays a fee of €50;
  • IASFA, ADM GNR, SAD PSP;
  • Insurance Companies: Médis, Multicare, Advance Care, Allianz, Saúde Prime, Future HealthCare, SS CGD, SAMS Quadros, SAMS, Montepio, RNA, Generali, Mudum, MGEN, Aegon, Vitória, Una Seguros, and other insurers.
  • Health Plans: Medicare, Saúde Prime, Future HealthCare, Continente Wells, ACP, and other health plans.
  • Protocols: NRD has protocols with several clinics and institutions that allow you to undergo the exam at very competitive prices. In the case of MR Enterography, the protocol price is €220.

The price varies depending on the healthcare system or insurance you use.

Learn more about MRI prices.

How is it performed?

The patient is positioned lying down inside the MRI scanner. Before the exam, it is necessary to drink an oral contrast liquid, which helps distend the intestinal loops for better visualization. In many cases, intravenous contrast is also administered.

The MRI scanner is open at both ends.

Earplugs are provided to reduce perception of the equipment noise.

During the exam, sequences with breathing control may be used. The total duration is around 45 minutes. It is essential to remain still to ensure image quality.

Entero Magnetic Resonance Imaging

What does it detect?

MR Enterography allows the detection of:

  • Active inflammation in the walls of the small intestine;
  • Strictures (narrowing of the intestinal lumen);
  • Fistulas and fistulous tracts;
  • Intra-abdominal abscesses;
  • Changes associated with Crohn’s disease;
  • Masses, tumors or infiltrative lesions;
  • Among others.

When is it indicated?

MR Enterography is generally indicated in the following situations:

  • Diagnosis and follow-up of Crohn’s disease;
  • Assessment of symptoms such as chronic abdominal pain, persistent diarrhea, weight loss or blood in the stool;
  • Study of inflammatory complications (fistulas, strictures, abscesses);
  • Monitoring response to treatment in inflammatory bowel diseases;
  • Investigation of tumors or lesions of the small intestine;
  • Among others.

Preparation and guidelines for MR Enterography

Before undergoing MRI at NRD, please consider the following factors:

Topic Guideline
Exam Prescription (paper form) You must bring the Exam Prescription in paper format.
Fasting In most cases, MR Enterography is performed with oral and sometimes intravenous contrast, so fasting for around 3 hours is generally required (we will confirm this when scheduling).
Early arrival Arrive 15 minutes before the scheduled time.
Medication You may take essential medication with a minimal amount of water.
Metal objects Remove all metal objects (e.g., earrings, bracelets, necklaces, piercings, hairpins, removable prostheses, etc.).
Pregnancy Inform the NRD healthcare professional if you are pregnant.
Previous exams / Tests / Info Bring previous exams, relevant clinical information and recent laboratory tests.
Glucose monitoring implant Do not place the implant, as it will need to be removed before the exam.
Makeup Do not wear makeup, as some products may interfere with the exam.
Valve and/or orthopedic prostheses If you have valve and/or orthopedic prostheses, bring documentation describing their material and composition.
Hearing aids Inform the clinic if you use a hearing aid, as it must be removed before the exam.
Dental prostheses Inform the clinic if you use a dental prosthesis, as it must be removed before the exam. Also inform them if you have dental implants.
Orthodontic appliances Inform the clinic if you have orthodontic appliances. A test may be required to assess compatibility with MRI.
Pacemakers and implantable devices NRD does not perform MRI on people with pacemakers or implantable devices (e.g., cochlear implants). The exam should be performed in a hospital setting.

Throughout the MRI exam, you will be continuously monitored by the NRD imaging technician responsible for your exam. An alert system will also be available for you to activate if needed.

You must remain still during the exam to ensure image quality.

The entire NRD team will be available to answer any questions you may have.

After the exam, you may resume your normal routine.

When and how do you receive the results?

You will receive the MRI results within 7 days after the exam, by email or in paper format at the clinic. On the day of the exam, you will take home a CD with the images.

Where to do it?

MRI can be performed at NRD, at the following address:

Avenida Columbano Bordalo Pinheiro, nº 11-B, ground floor, 1070 – 060 Lisbon (Next to Praça de Espanha)

How long does MR Enterography take?

Around 45 minutes, depending on preparation and need for contrast.

Do I need any special care after MR Enterography?

No. The exam is safe. After the scan, good hydration is advised, especially if contrast was used.

Is MR Enterography covered by the SNS (Portuguese NHS)?

No. MRI is not reimbursed/covered by the SNS.

Is MR Enterography dangerous? What are the risks?

No. It is safe and uses no ionizing radiation. Mild allergic reactions to contrast are very rare; contrast is avoided in severe kidney failure.

What are the contraindications for MR Enterography?

The powerful magnetic field used in magnetic resonance imaging (MRI) attracts objects containing iron and can cause them to move with great force.
Metallic objects implanted in the body may pose a hazard because they can move or heat up during the MRI scan. Some conditions are often contraindications for MRI. Therefore, if you have any of the following devices or materials, you should inform the healthcare team before undergoing the exam:

Implanted devices or materials: Pacemakers or cardiac defibrillators, ferromagnetic aneurysm clips, electrodes used in deep brain stimulation, cochlear implants, mechanical heart valves, and other metallic devices.

Metallic foreign bodies: Shrapnel or other metal objects in the body can be heated and/or moved by the magnetic field. These should be evaluated to determine the risk of injury during the procedure. This includes any tiny metallic fragments or splinters that may have lodged in the eye as a result of welding, grinding, or any kind of accident.

Certain types of ocular implants present a risk of eye damage due to metallic components.

Other situations that may contraindicate this exam:
– Known allergy to gadolinium (if contrast is used);
– Severe kidney failure (in cases where contrast is used);
– Pregnancy;
– Drug infusion devices may malfunction during MRI; the specifics of each model determine whether and how the scan can be performed safely.

According to the U.S. Food and Drug Administration (FDA), some adhesives and electrodes used in electrocardiograms (ECGs) may cause skin burns during MRI.

This list does not cover all possible MRI contraindications. Discuss any concerns you may have before the exam with the healthcare professional supervising your procedure.

Can I have this MRI if I am pregnant?

Usually avoided unless urgent, and typically only after 12 weeks of gestation.

Is MR Enterography done with contrast?

Usually yes. The exam typically involves drinking oral contrast and often receiving intravenous contrast.

Can MR Enterography replace colonoscopy?

No. They are complementary. Colonoscopy visualizes the colon directly, whereas MR Enterography provides a global view of the small bowel and surrounding tissues.

What is the difference between MR Enterography and Entero CT?

MR Enterography does not use ionizing radiation, so it is preferred for younger patients or repeated follow‑up. Entero CT uses radiation and is often chosen in urgent settings for a rapid assessment.