CT colonography using different reconstruction modi.
OBJECTIVE
Performing computed tomography (CT) colonography, we compared different reconstruction modi for the detection of colorectal polyps.


METHODS
The CT data of 48 patients using 16-slice helical CT were analysed in axial slices, virtual-endoscopy and colon-dissection modus.


RESULTS
The sensitivity (specificity) for the detection of colonic polyps was 94% (80%) if using "colonic-dissection" tool and 89% (80%) if using "virtual-endoscopy" tool. The difference between the virtual endoscopy and colon dissection, considering polyps up to 4.9 mm, was significant.


CONCLUSIONS
Reconstruction software colon dissection improves the sensitivity of CT colonography.
Röttgen
Rainer
R
Klinik für Strahlenheilkunde, Charité Campus Virchow-Klinikum, University Medical Center, Augustenburger Platz 1, Berlin 13353, Germany. r.roettgen@t-online.de
Fischbach
Frank
F
Plotkin
Michail
M
Lorenz
Michael
M
Freund
Torsten
T
Schröder
Ralf Jürgen
RJ
Felix
Roland R
RR
D003111:Colonic Polyps / Q000175:diagnosis* / Q000000981:diagnostic imaging; D023881:Colonography, Computed Tomographic / Q000379:methods*; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D012680:Sensitivity and Specificity; D012984:Software