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首页> 外文会议>Conference on physiology and function from multidimensional images >Spiral CT colonography (virtual colonoscopy): multiobserver study of different image display techniques compared to colonoscopy
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Spiral CT colonography (virtual colonoscopy): multiobserver study of different image display techniques compared to colonoscopy

机译：螺旋CT上系（虚拟结肠镜检查）：与结肠镜检查相比，不同图像显示技术的多功能器研究

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Spiral CT colonography (virtual colonoscopy) is a rapidly developing field with both 2D and 3D display techniques currently used for visualization of colorectal polyps. Our purpose was to perform a multiobserver reader study in a test set of 30 colonic segments to determine the diagnostic performance of 2D MPR, 3D thick slab MPR, and 3D PVR, using colonoscopy as the standard of reference. In this study, CT colonography was performed in a cohort of patients with known polyps immediately prior to colonoscopy, following using a standard bowel prep and air-insufflation. A test set of 30 colonic segments was created, with a total of 22 lesions present, with all findings verified by colonoscopy. Three image displays were tested in this study: 2D multiplanar reformation (MPR), 3D thick slab MPR following 2D MPR review, and 3D perspective volume rendered (PVR) displays following 2D MPR review. Readers independently analyzed each test case in a controlled setting and scored their confidence on a 5 point scale of each focal finding observed. Our results demonstrated high sensitivity for detection of colorectal polyps using 2D MPR in this library of 30 colonic segments. Reader analysis with 3D PVR demonstrated improved characterization of focal findings in selected cases.
机译：螺旋CT结肠扫描（虚拟结肠镜检查）是具有目前用于可视化的2D和3D显示技术的快速发展领域。我们的目的是在测试组30个结肠杆区的测试集中执行MultiObserver读者研究，以确定使用结肠镜检查作为参考标准的2D MPR，3D厚板MPR和3D PVR的诊断性能。在该研究中，在使用标准的肠道制备和空气 - 吹气之前，在结肠镜检查之前立即在患有已知息肉的患者的患者的患者队列中进行CT上影。创建了一组30种结肠段，总共22个病变，所有调查结果都通过结肠镜检查进行了验证。在本研究中测试了三种图像显示：2D多平面改造（MPR），3D厚板MPR后2D MPR审查后，呈现后的3D透视卷（PVR）显示在2D MPR审查之后。读者在受控设置中独立地分析了每个测试用例，并在观察到的每个局灶性发现的5分尺度上进行置信。我们的结果表明，在30个结肠段的这个文库中使用2D MPR检测结肠直肠息肉的高灵敏度。具有3D PVR的读者分析表明了所选病例中的焦点结果表征。

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