Dark lumen MR colonography based on fecal tagging for detection of colorectal masses: accuracy and patient acceptance |
| |
Authors: | S C Goehde E Descher A Boekstegers T Lauenstein C Kühle S G Ruehm W Ajaj |
| |
Institution: | (1) Department of Diagnostic and Interventional Radiology, University Hospital Essen, Hufelandstrasse 55, Essen, 45122, Germany;(2) Private practice for gastroenterology, I Hagen 26, Essen, 45127, Germany |
| |
Abstract: | Background Magnetic resonance colonography (MRC) with fecal tagging has recently been investigated in clinical studies for the detection
of polyps. We assessed fecal tagging MRC in a field trial.
Methods Forty-two patients in a private gastroenterologic practice underwent MRC with barium-based fecal tagging (150 mL of 100% barium
at each of 6 main meals before MRC) and conventional colonoscopy. Diagnostic accuracy of MRC and patient acceptance were assessed
and compared with the respective results of conventional colonoscopy.
Results Eighteen percent of all MRC examinations showed a remaining high stool signal in the colon that impeded a reliable inclusion
or exclusion of polyps. On a lesion-by-lesion basis, sensitivities for polyp detection were 100% for polyps larger than 2 cm
(n = 1), 40% for polyps between 10 and 19 mm, 16.7% for polyps between 6 and 9 mm, and 9.1% for polyps smaller than 6 mm. The
main reason for the low acceptance of MRC was the barium preparation, which was rated worse than the bowel cleaning procedure
with conventional colonoscopy.
Conclusion MRC with fecal tagging must be further optimized. The large amount of barium resulted in poor patient acceptance, and barium
according to this protocol did not provide sufficient stool darkening. Other strategies, such as increasing the hydration
of stool, must be developed. |
| |
Keywords: | Magnetic resonance colonography Barium Fecal tagging Patient acceptance Diagnostic accuracy |
本文献已被 PubMed SpringerLink 等数据库收录! |
|