Colorectal polyp detection with CT colography: two- versus three-dimensional techniques. Work in progress.
Colorectal polyp detection with CT colography: two- versus three-dimensional techniques. Work in progress.
复制标题
使用 CT 结肠成像检测结直肠息肉：二维技术与三维技术。
DOI：
10.1148/radiology.200.1.8657944
复制
发表时间：
1996
期刊：
影响因子：
19.7
通讯作者：
D. Ilstrup
中科院分区：
文献类型：
--
作者：
Ayako Hara;C. Johnson;J. Reed;R. Ehman;D. Ilstrup
目的
比较仅二维（2D）计算机断层扫描（CT）结肠造影、仅三维（3D）CT结肠造影以及2D和3D CT结肠造影联合检测结直肠息肉。
材料和方法
共有11个计算机模拟息肉（1-10 mm）被随机放置在5个相同的CT数据集的图像的72岁男子的息肉，直肠乙状结肠。产生了15个CT结肠造影数据集：5个仅具有2D CT图像，5个仅具有3D CT图像，5个具有2D和3D CT图像。两名放射科医生随机、盲法和独立地评估了所有15个数据集，以检测模拟息肉。
结果
未检测到2 mm或更小的息肉。三种技术在检测结直肠息肉方面没有统计学显著差异。然而，2D和3D CT结肠造影的组合导致息肉检出率大于或等于单独的2D或3D CT结肠造影。扁平息肉比无蒂息肉更难检测。2D CT结肠造影出现5例假阳性结果。
结论
2D和3D CT图像的组合显示可能提供结直肠息肉的最大检出率。
PURPOSE
To compare detection of colorectal polyps with two-dimensional (2D) computed tomographic (CT) colography only, three-dimensional (3D) CT colography only, and a combination of 2D and 3D CT colography.
MATERIALS AND METHODS
A total of 11 computer-simulated polyps (1-10 mm) were placed randomly in five identical CT data sets for images of a 72-year-old man's polyp-free, rectosigmoid colon. Fifteen CT colographic data sets were produced: five with 2D CT images only, five with 3D CT images only, and five with 2D and 3D CT images. Two radiologists randomly, blindly, and independently evaluated all 15 data sets to detect the simulated polyps.
RESULTS
No polyps 2 mm or smaller were detected. No statistically significant differences in the detection of colorectal polyps were found between the three techniques. However, the combination of 2D and 3D CT colography resulted in polyp detection rates that were greater than or equal to those of 2D or 3D CT colography alone. Flat polyps were more difficult to detect than sessile polyps. Five false-positive findings occurred with 2D CT colography.
CONCLUSION
A combined display of 2D and 3D CT images likely provides the greatest rate of detection of colorectal polyps.