Dark Lumen Mr Colonography: Can High Spatial Resolution Vibe Imaging Improve The Detection of Colorectal Masses

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Journal Title, Volume, Page: 
Fortschr Rontgenstr 2006; 178: 1073–1078
Year of Publication: 
Waleed Ajaj
Medical Center, University Hospital Hamburg-Eppendorf
Current Affiliation: 
Department of Medicine, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
S. G. Ruhm
Department of Radiology, David Geffen School of Medicine
N. Papanikolaou
Department of Radiology, University Hospital of Heraklion
T. C. Lauenstein
Department of Radiology, Emory Clinic
G. Gerken
Klinik fur Gastroenterologie und Hepatologie, Universitatsklinikum Essen
M. Goyen
Klinik für Gastroenterologie und Hepatologie, Universitätsklinikum Essen
Preferred Abstract (Original): 

Purpose: To assess whether the detection of colorectal lesions can be improved using high spatial resolution VIBE imaging.
Materials and Methods: 48 patients underwent same-day dark lumen MR colonography (MRC) and conventional colonoscopy (CC) as the standard for the detection of colorectal masses. MRC was performed using contrast-enhanced standard and high spatial resolution T1-weighted 3D VIBE sequences. The findings and the image quality of the standard and high spatial resolution VIBE sequences were compared qualitatively and quantitatively. The findings of both sequences regarding colorectal lesions were compared to those of a subsequently performed colonoscopy.
Results: The high spatial resolution VIBE sequence significantly improved the quantitative image quality (CNR 54.0 vs. 36.8). However, high spatial resolution VIBE imaging did not detect more colorectal lesions than the standard VIBE sequence. In addition, none of the sequences employed was able to detect lesions with a diameter of less than 5mm (CC 40 lesions). However, 13 colorectal lesions with a diameter of greater than 5mm were detected by both sequences (CC 15).
Conclusion: High spatial resolution VIBE imaging did not improve the detection of colorectal masses and MRC fails to detect colorectal lesions with a diameter of less than 5 mm.

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