Rubin G D, Beaulieu C F, Argiro V, Ringl H, Norbash A M, Feller J F, Dake M D, Jeffrey R B, Napel S
Department of Radiology, S-072B, Stanford University School of Medicine, Stanford, CA 94305-5105, USA.
Radiology. 1996 May;199(2):321-30. doi: 10.1148/radiology.199.2.8668772.
To use perspective volume rendering (PVR) of computed tomographic (CT) and magnetic resonance (MR) imaging data sets to simulate endoscopic views of human organ systems.
Perspective views of helical CT and MR images were reconstructed from the data, and tissues were classified by assigning color and opacity based on their CT attenuation or MR signal intensity. "Flight paths" were constructed through anatomic regions by defining key views along a spline path. Twelve movies of the thoracic aorta (n=3), tracheobronchial tree (n=4), colon (n=3), paranasal sinuses (n=1), and shoulder joint (n=1) were generated to display images along the flight path. All abnormal results were confirmed at surgery.
PVR fly-through enabled evaluation of the full range of tissue densities, signal intensities, and their three-dimensional spatial relationships.
PVR is a novel way to present volumetric data and may enable noninvasive diagnostic endoscopy and provide an alternate method to analyze volumetric imaging data for primary diagnosis.
利用计算机断层扫描（CT）和磁共振（MR）成像数据集的透视容积再现（PVR）来模拟人体器官系统的内镜视图。
从数据中重建螺旋CT和MR图像的透视图，并根据组织的CT衰减或MR信号强度通过指定颜色和不透明度对组织进行分类。通过沿样条路径定义关键视图，在解剖区域构建“飞行路径”。生成了12部关于胸主动脉（n = 3）、气管支气管树（n = 4）、结肠（n = 3）、鼻窦（n = 1）和肩关节（n = 1）的影片，以显示沿飞行路径的图像。所有异常结果均在手术中得到证实。
PVR飞行浏览能够评估整个组织密度范围、信号强度及其三维空间关系。
PVR是呈现容积数据的一种新方法，可能实现无创诊断性内镜检查，并为分析容积成像数据以进行初步诊断提供另一种方法。
