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MR Enterography for Crohn Disease (Detailed)

Radiation-free MR imaging of small bowel for Crohn disease activity, complications and serial monitoring.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Radyoloji department. Book Appointment →

What is MR Enterography for Crohn Disease (Detailed)?

MR enterography (MRE) is the imaging modality of choice for Crohn disease assessment, particularly in pediatric, young adult and pregnant patients due to absence of ionizing radiation. The examination uses oral contrast for bowel distension, intravenous gadolinium for vascular enhancement and dynamic acquisitions to evaluate bowel motility (cine MRE).

Standard protocol includes T2-weighted single-shot fast spin-echo, balanced steady-state free precession, diffusion-weighted imaging and dynamic post-gadolinium T1-weighted sequences. MaRIA (Magnetic Resonance Index of Activity) score quantifies disease activity using bowel wall thickness, relative contrast enhancement, edema and ulcers. MRE detects strictures, fistulas, abscesses, perianal disease and is critical for treatment monitoring including transmural healing assessment.

Symptoms

Newly diagnosed Crohn disease (baseline imaging)
Disease activity assessment in known IBD
Treatment response monitoring
Suspected complication (stricture, fistula, abscess)
Pre-surgical mapping of disease
Pediatric and young adult IBD
Pregnant patients with active disease
Surveillance for asymptomatic disease activity

Risk Factors

Severe claustrophobia
Implanted ferromagnetic devices (older pacemakers, neurostimulators)
Cochlear implants (most modern devices MRI-conditional)
Severe renal impairment (gadolinium contrast risk for NSF)
Inability to lie still for 30-45 minutes
Inability to consume oral contrast
Severe nausea and vomiting
Bowel obstruction precluding oral contrast

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Suspected Crohn disease in young patients
  • Known Crohn disease with disease assessment
  • Symptoms during pregnancy
  • Pediatric inflammatory bowel disease
  • Need for serial imaging without radiation
  • Pre-surgical disease mapping
  • Treatment response monitoring needs

Treatment Methods

01
Fasting 4 hours and oral hyoscine for motility reduction
02
Oral contrast (mannitol 2.5% or PEG) 1-1.5 liters
03
Patient prone or supine positioning
04
T2-weighted single-shot fast spin-echo (HASTE/SSFSE)
05
Balanced SSFP (TrueFISP/FIESTA) for bowel anatomy
06
Diffusion-weighted imaging for active inflammation
07
Cine MR for peristalsis evaluation
08
Dynamic post-gadolinium T1-weighted fat-suppressed
09
MaRIA score calculation for activity quantification
10
Assessment of perianal disease (T2 fat-saturated)
11
Comparison with prior MRE for disease evolution

Which Department to Visit?

You can visit our Radyoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.