Seemann M D, Gebicke K, Luboldt W, Albes J M, Vollmar J, Schäfer J F, Beinert T, Englmeier K H, Bitzer M, Claussen C D
Radiologische Klinik, Abteilung Radiologische Diagnostik, Universitätsklinikum Tübingen.
Rofo. 2001 Jul;173(7):650-7. doi: 10.1055/s-2001-15835.
The aim of this study was to demonstrate the possibilities of a hybrid rendering method, the combination of a color-coded surface and volume rendering method, with the feasibility of performing surface-based virtual endoscopy with different representation models in the operative and interventional therapy control of the chest.
In 6 consecutive patients with partial lung resection (n = 2) and lung transplantation (n = 4) a thin-section spiral computed tomography of the chest was performed. The tracheobronchial system and the introduced metallic stents were visualized using a color-coded surface rendering method. The remaining thoracic structures were visualized using a volume rendering method. For virtual bronchoscopy, the tracheobronchial system was visualized using a triangle surface model, a shaded-surface model and a transparent shaded-surface model.
The hybrid 3D visualization uses the advantages of both the color-coded surface and volume rendering methods and facilitates a clear representation of the tracheobronchial system and the complex topographical relationship of morphological and pathological changes without loss of diagnostic information. Performing virtual bronchoscopy with the transparent shaded-surface model facilitates a reasonable to optimal, simultaneous visualization and assessment of the surface structure of the tracheobronchial system and the surrounding mediastinal structures and lesions.
Hybrid rendering relieve the morphological assessment of anatomical and pathological changes without the need for time-consuming detailed analysis and presentation of source images. Performing virtual bronchoscopy with a transparent shaded-surface model offers a promising alternative to flexible fiberoptic bronchoscopy.
本研究的目的是证明一种混合渲染方法的可能性，即颜色编码表面渲染和容积渲染方法的结合，以及在胸部手术和介入治疗控制中使用不同表示模型进行基于表面的虚拟内窥镜检查的可行性。
连续6例接受部分肺切除术（n = 2）和肺移植术（n = 4）的患者进行了胸部薄层螺旋计算机断层扫描。使用颜色编码表面渲染方法可视化气管支气管系统和置入的金属支架。使用容积渲染方法可视化其余胸部结构。对于虚拟支气管镜检查，使用三角形表面模型、阴影表面模型和透明阴影表面模型可视化气管支气管系统。
混合三维可视化利用了颜色编码表面渲染和容积渲染方法的优点，有助于清晰显示气管支气管系统以及形态和病理变化的复杂地形关系，而不会丢失诊断信息。使用透明阴影表面模型进行虚拟支气管镜检查有助于合理至最佳地同时可视化和评估气管支气管系统的表面结构以及周围纵隔结构和病变。
混合渲染无需对源图像进行耗时的详细分析和呈现，即可减轻对解剖和病理变化的形态学评估。使用透明阴影表面模型进行虚拟支气管镜检查为柔性纤维支气管镜检查提供了一种有前景的替代方法。
