50 consecutive patients with histologically confirmed Crohn's disease were examined in Radiology Department of Medical University of Gdańsk,
Poland in 2013 and 2014.
32 patients aged 33±0,3 had features of active inflammation described in histological report,
18 patients aged 38±0,4 had chronic changes reported.
We analyzed the data retrospectively.
All of them,
specially prepared to the examination (with a proper bowel distention),
performed MR-enterography with the use of 1,5-T Siemens scanner of a phased array surface coil and with the use of a protocol consisted of 11 sequences.
The patients were imaged in supine and prone position.
We searched for pathological areas typical for active Crohn's disease like: wall thickening,
mural oedema,
mural diffusion restriction,
wall enhancement,
increased mesenteric vascularity and lymphadenopathy and for chronic process like: mural fibrosis and stricture formation.
We analyzed DWI sequences with creating ADC maps for different b values: b=0,
b=50,
b=500 and b=800 in coronal planes.
In this survey we took under consideration maps for b=50 and b=800 and measured ADC values in pathological parts of the bowel.
We also examined patients with a use of a contrast-medium (0.1 mmol/kg gadolinum-based contrast agent) in dynamic sequences in coronal planes: T1 Vibe FS dyn mbh (in the arterial nad portal venous phases using a bolus triggering once contrast reaches descending aorta,
with subtraction,
with 1,6 mm slice thickness) and T1 Vibe FS mbh as post-contrast sequence
(with the same slice thickness).
We observed the wash-out curves in pathological parts of the bowel.