基于WEB的远程教学是以学生为中心的现代教学的重要手段,基于虚拟现实的教学资源是网上教学资源中一个重要部分.本文设计了一个基于Internet的教学资源库的系统,提出虚拟建模的新思路,把虚拟现实的建模分成三个层次,数据存储层、计算逻...基于WEB的远程教学是以学生为中心的现代教学的重要手段,基于虚拟现实的教学资源是网上教学资源中一个重要部分.本文设计了一个基于Internet的教学资源库的系统,提出虚拟建模的新思路,把虚拟现实的建模分成三个层次,数据存储层、计算逻辑层和显示层.并对基于Internet的虚拟现实的两类VR引擎的代表———图形渲染软件VRML和图像渲染软件Qu icktim e VR的建模方法与相关问题进行了研究.展开更多
The aim of this case report is to raise awareness about the use of 3-Dimentional Computed Tomography (3D-CT) virtual reality imaging as a routine pre-operative tool for evaluation of unusual anatomy such as Situs Inve...The aim of this case report is to raise awareness about the use of 3-Dimentional Computed Tomography (3D-CT) virtual reality imaging as a routine pre-operative tool for evaluation of unusual anatomy such as Situs Inversus Totalis (SIT). We present a case of presumed lung cancer in a 58 years old lady with SIT successfully treated by VATS lobectomy via an anterior approach. She presented with an incidental solitary pulmonary nodule in her right lower lobe, which had moderate FDG uptake on the PET scan. The nodule was too deep to permit safe wedge biopsy, due to proximity of a large pulmonary arterial branch. 3D-CT images were invaluable in pre-operative assessment of the anatomy and were the key to safe completion of right VATS lower lobectomy. Sectioning the lung after retrieval of the specimen suggested a chondroid hamartoma;therefore, systemic nodal dissection (SND) was not contemplated. The final histology confirmed the diagnosis of chondroid hamartoma. In an unusual anatomy such as SIT, 3D-CT allows construction of virtual reality models that can be viewed and manipulated before and during the operation to understand the anatomy better, highlight caveats around target structures and enable localisation of lesions unlikely to be palpated intra-operatively.展开更多
文摘基于WEB的远程教学是以学生为中心的现代教学的重要手段,基于虚拟现实的教学资源是网上教学资源中一个重要部分.本文设计了一个基于Internet的教学资源库的系统,提出虚拟建模的新思路,把虚拟现实的建模分成三个层次,数据存储层、计算逻辑层和显示层.并对基于Internet的虚拟现实的两类VR引擎的代表———图形渲染软件VRML和图像渲染软件Qu icktim e VR的建模方法与相关问题进行了研究.
文摘The aim of this case report is to raise awareness about the use of 3-Dimentional Computed Tomography (3D-CT) virtual reality imaging as a routine pre-operative tool for evaluation of unusual anatomy such as Situs Inversus Totalis (SIT). We present a case of presumed lung cancer in a 58 years old lady with SIT successfully treated by VATS lobectomy via an anterior approach. She presented with an incidental solitary pulmonary nodule in her right lower lobe, which had moderate FDG uptake on the PET scan. The nodule was too deep to permit safe wedge biopsy, due to proximity of a large pulmonary arterial branch. 3D-CT images were invaluable in pre-operative assessment of the anatomy and were the key to safe completion of right VATS lower lobectomy. Sectioning the lung after retrieval of the specimen suggested a chondroid hamartoma;therefore, systemic nodal dissection (SND) was not contemplated. The final histology confirmed the diagnosis of chondroid hamartoma. In an unusual anatomy such as SIT, 3D-CT allows construction of virtual reality models that can be viewed and manipulated before and during the operation to understand the anatomy better, highlight caveats around target structures and enable localisation of lesions unlikely to be palpated intra-operatively.
