Computer-Aided Detection of Polyps in a Colon Phantom: Effect of Scan Orientation, Polyp Size, Collimation, and Dose
Computer-Aided Detection of Polyps in a Colon Phantom: Effect of Scan Orientation, Polyp Size, Collimation, and Dose
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计算机辅助检测结肠体模中的息肉：扫描方向、息肉大小、准直和剂量的影响
DOI：
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发表时间：
2002
影响因子：
1.3
通讯作者：
Daniel Johnson
中科院分区：
文献类型：
--
作者：
Shuo;R. Summers;M. Loew;C. McCollough;Daniel Johnson
目的探讨息肉大小、扫描平面方向、准直度、扫描仪类型(单层或多层螺旋)和辐射剂量对CT结肠成像计算机辅助检测的重要性。材料和方法将8个组织等效的模拟息肉放置在一个充气的丙烯酸管内，放在一个装满水的盒子里。它们的大小(直径和高度以毫米为单位)分别为10×10、10×7、10×5、10×3、7×7、7×5、7×3和5×5。通过应用我们的原型自动息肉检测器软件对48个不同CT扫描仪设置的体模的CT结肠成像数据集进行检测。结果在48个实验中有47个检测到8个息肉中的至少6个。最常见的两个未被发现的息肉(7×7和5×5)有极大的偏心(其高度是底部半径的两倍)，最常被遗漏的是90°管定向、5 mm准直和高床速。在48个实验中，只有5个实验出现假阳性检测。结论在我们检查的所有方位、剂量、准直度和模式下，均能以100%的灵敏度检测到临床上有意义的10 mm息肉。
Purpose To determine the importance of polyp size, orientation to the scan plane, collimation, scanner type (single or multislice helical), and radiation dose on computed tomography (CT) colonography computer-aided detection. Materials and Methods Eight tissue-equivalent simulated polyps were placed into the interior of an air-filled acrylic tube placed within a water-filled box. Their sizes, expressed by diameter and height in millimeters, were 10 × 10, 10 × 7, 10 × 5, 10 × 3, 7 × 7, 7 × 5, 7 × 3, and 5 × 5. Detection of the polyps was performed by applying our prototype automated polyp detector software to 48 CT colonography data sets of the phantom acquired with different CT scanner settings. Results We detected at least six of the eight polyps in 47 of 48 experiments. The two most frequently undetected polyps (7 × 7 and 5 × 5) had extreme eccentricity (their height was twice the radius of the base) and were most commonly missed for 90° tube orientation, 5-mm collimation, and high table speed. False-positive detections occurred in only 5 of 48 experiments. Conclusion Clinically significant 10-mm polyps can be detected with 100% sensitivity in all orientations, doses, collimations, and modes that we examined.
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影响因子：
19.7
作者：
Summers, RM;Beaulieu, CF;Napel, S
通讯作者：
Napel, S
螺旋 CT 结肠成像中图像采集参数对 CT 伪影和息肉描绘的影响：体外评估。
影响因子：
19.7
作者：
Whiting,BR;McFarland,EG;Brink,JA
通讯作者：
Brink,JA
计算机断层扫描和磁共振结肠成像：1995 年至 2000 年进展总结。
影响因子：
1.4
作者：
Summers,RM;Hara,AK;Luboldt,W;Johnson,CD
通讯作者：
Johnson,CD
模型模型中结肠息肉的检测：对虚拟结肠镜检查数据采集的影响。
影响因子：
1.3
作者：
Beaulieu,CF;Napel,S;Daniel,BL;Ch'en,IY;Rubin,GD;Johnstone,IM;JeffreyJr,RB
通讯作者：
JeffreyJr,RB