- 作者：Patricia Carrascosa ; Elba Martí ; n Ló ; pez ; Carlos Capuñ ; ay ; Javier Vallejos ; Jorge Carrascosa
- 关键词：Multidetector computed tomography ; Virtual studies ; Virtual colonoscopy ; CT colonography ; Paediatrics
- 刊名：European Journal of Radiology
- 出版年：2010
- 出版时间：April 2010
- 年：2010
- 卷：74
- 期：1
- 页码：189-194
- 全文大小：1178 K
ObjectiveTo determine the usefulness of perspective-filet view for polypoid lesions in paediatric patients in comparison with conventional virtual colonoscopy (VC) analysis and optical colonoscopy.Methods
Sixty-one patients (mean age 5 years old) with a previous episode of rectal bleeding were studied using a 16 slices CT scanner. All patients underwent a colonic preparation. Two acquisitions were done in supine and prone positions with slices of 2 mm thickness; increment 1 mm, 30–50 mA; 90–120 kV. In a workstation an experienced radiologist reviewed images twice. The first read was done using the conventional virtual colonoscopy technique with the evaluation of two-dimensional (2D), three-dimensional (3D) and endoscopical images. Later, in a second session, perspective-filet view was used. It shows a 360° unrolled visualization of the inner colon. The presence, size and location of the lesions were determined. A record of the reading time was made.
Results
At per patient evaluation the conventional virtual colonoscopy analysis obtained a sensitivity of 86 % and a specificity of 98 % . The perspective-filet view obtained a sensitivity of 91 % and a specificity of 99 % . In the evaluation on a per lesion basis the conventional analysis had a sensitivity of 81 % and a specificity of 88 % . Perspective-filet view, had a sensitivity of 82 % and specificity of 90 % . The average total reading time using conventional colonoscopy technique was 18 ± 3 min, versus 4 ± 1 min using the perspective-filet view.
Conclusion
Virtual colon dissection with perspective-filet view is more time-efficient than conventional virtual colonoscopy evaluation with correct correlation in results.