MRI-based colonography is a minimally invasive imaging modality for assessing the colon and abdomen. It may be suitable for colonic diverticulitis assessment.
In this study, doctors from Germany and the United States evaluated the feasibility of MRI-based colonography to assess diverticulosis or diverticulitis.
The team examined 14 consecutive patients with clinically suspected diverticulitis using MRI colonography on a 1.5-T scanner.
The patients also underwent abdominal CT as the gold standard.
|3D models gave a comprehensive image for surgical planning.|
|International Journal of Colorectal Disease|
Patients were given intravenous N-Butyl-scopalamin to reduce bowel peristalsis.
Following rectal administration of a T1-positive enema, T1- and T2-weighted acquisitions with additional intravenous contrast were obtained.
A 3D FLASH sequence was acquired for virtual colonography.
The doctors compared their results with those from CT and biological parameters.
The team examined a total of 56 bowel segments (sigmoid colon, descending colon, transverse colon, ascending colon) in the 14 patients. Of these, 54 had good to fair image quality.
The team found that inflammation was identically assessed on both CT and MRI.
However, the 3D models of the colon revealed further diverticula in the remaining colon.
The team found that the 3D models gave a comprehensive image for surgical planning.
Dr Andreas Schreyer and colleagues concluded, "In our preliminary study MRI colonography revealed the same diagnosis as CT in all patients without ionizing radiation".
"Additionally, 3D-rendered models and virtual colonoscopy can be performed."
"This comprehensive 3D model could replace presurgical planning barium enema with concurrent assessment of the residual colon."