title: Volume rendering with color coding of tagged stool during endoluminal fly-through CT colonography: effect on reading efficiency.
abstract: Institutional review board approval and informed consent were obtained. This study was conducted to evaluate a newly developed technique for discriminative color coding of tagged stool during three-dimensional (3D) endoluminal fly-through computed tomographic (CT) colonography and to determine its effect on reading efficiency. Thirty patients, including three dropouts, were prepared with moderate cathartic preparation (20 mg bisacodyl, three doses of 200 mL of 5% wt/vol barium sulfate). Images were reviewed by two independent readers with and without color coding. Reader preference, interpretation time, and diagnostic performance were evaluated. Both reviewers preferred color coding. With color coding, interpretation time was shortened by 3 minutes (reader 1, P = .002) and 2.5 minutes (reader 2, P = .009); sensitivity for 6-mm-diameter or larger lesions remained constant at 96% (24 of 25; 95% confidence interval: 78.9%, <100%; P = >.99). This technique facilitates primary 3D interpretation of images obtained with moderate cathartic preparation.
authors: Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 388-1 Poongnap-Dong, Songpa-Gu, Seoul 138-040, Korea. seongho@amc.seoul.kr
authors: Seong Ho
authors: SH
authors: Park
authors: Seung Soo
authors: SS
authors: Lee
authors: Jin Kook
authors: JK
authors: Kim
authors: Min-Ju
authors: MJ
authors: Kim
authors: Hye Jin
authors: HJ
authors: Kim
authors: So Yeon
authors: SY
authors: Kim
authors: Min-Yeong
authors: MY
authors: Kim
authors: Ah Young
authors: AY
authors: Kim
authors: Hyun Kwon
authors: HK
authors: Ha
mesh_terms: D000465:Algorithms; D002400:Cathartics; D023881:Colonography, Computed Tomographic / Q000379:methods*; D003287:Contrast Media; D005243:Feces; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008297:Male; D008875:Middle Aged; D011856:Radiographic Image Enhancement / Q000379:methods*; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013194:Staining and Labeling / Q000379:methods
chemical_list: D002400:Cathartics; D003287:Contrast Media