GI tract unraveling with curved cross sections
GI tract unraveling with curved cross sections
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DOI：
10.1109/42.700745
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发表时间：
1998-04-01
影响因子：
10.6
通讯作者：
Vannier, MW
中科院分区：
文献类型：
--
作者：
Wang, G;McFarland, EG;Vannier, MW
目前，使用螺旋/螺旋计算机断层扫描(CT)进行胃肠道(GT)检查的方法是对轴位图像进行基于切片的检查。CT结肠造影术是一项最新的进展，它可以对结肠进行腔内可视化，类似于内窥镜检查。各种绘制算法已经被开发出来，并取得了令人满意的结果，但在实际应用中，导航穿过复杂、曲折的结肠解剖结构可能会很耗时。在本文中，我们提出了一种基于电场的方法来解开卷曲的结肠，即用弯曲的横截面对其进行数字矫直，并将其在平面上展平。在我们的方法中，沿着中央结肠路径模拟电荷。弯曲的横截面由电力线定义，并导致一致的解体。通过两个患者的图像体积显示，该技术产生了复杂的结肠特征的全局平面图，具有检测息肉的潜力。
Gastrointestinal (GT) tract examination with spiral/helical computed tomography (CT) is currently performed by slice-based inspection of axial images. CT colography is a recent advance which allows an intraluminal visualization of the colon, similar to endoscopy. Various rendering algorithms have been developed with promising results, however navigation through the complex, tortuous anatomy of the colon can be time consuming in practice.In this paper, we propose an electrical-field-based method to unravel the convoluted colon, that is, to digitally straighten it with curved cross sections and flatten it over a plane. In our method, electrical charges are simulated along the central colon path. Curved cross sections are defined by the electrical force lines, and lead to consistent unraveling. It is demonstrated with image volumes of two patients that this technique produces a global planar view of complicated colon features with a potential for detection of polyps.