he virtual erection simulation system was explained for a steel structure including ship and ocean plant blocks. The simulation system predicted the erection state to optimize any gap or overlap of blocks based on 3-D...he virtual erection simulation system was explained for a steel structure including ship and ocean plant blocks. The simulation system predicted the erection state to optimize any gap or overlap of blocks based on 3-D measurement data. The blocks were modified （cut） on the basis of the simulation result on the ground before erecting them by crane. The re-cutting process was not required and the blocks were erected into a mother ship speedily. Therefore, the erection time is reduced, increasing the dock turnover.展开更多
<strong>Aim:</strong> To carry out a 3D vector reconstruction of the typical cervical vertebra from anatomical sections of the “Korean Visible Human” for educational purposes. <strong>Material and ...<strong>Aim:</strong> To carry out a 3D vector reconstruction of the typical cervical vertebra from anatomical sections of the “Korean Visible Human” for educational purposes. <strong>Material and Methods:</strong> The anatomical subject was a 33-year-old Korean man who died of leukemia. He was 164 cm tall and weighed 55 kg. This man donated his body to science. Her body was frozen and cut into several anatomical sections after an MRI and CT scan. These anatomical sections were made using a special saw called a 0.2 mm thick cryomacrotome. Thus 8100 cuts were obtained. Only the sections numbered 940 to 1200 were used for our study. A segmentation by manual contouring of the different parts of the typical cervical vertebra was made using the software Winsurf version 3.5 on a laptop PC running Windows 7 equipped with a Ram of 8 gigas. <strong>Results:</strong> Our 3D vector model of the typical cervical vertebra is easily manipulated using the Acrobat 3DPDF interface. Each part of the vertebra accessible in a menu can be displayed, hidden or made transparent, and 3D labels are available as well as educational menus for learning anatomy. <strong>Conclusion: </strong>This original work constitutes a remarkable educational tool for the anatomical study of the typical cervical vertebra and can also be used as a 3D atlas for simulation purposes for training in therapeutic gestures.展开更多
[目的]介绍三维术前规划在全髋关节置换术(total hip arthroplasty,THA)中的应用方法和临床效果.[方法]2019年5月—2020年6月采用三维术前规划辅助人工全髋关节置换术8例.术前行双髋关节三维CT薄层扫描,建立三维立体模型,三维图像上确...[目的]介绍三维术前规划在全髋关节置换术(total hip arthroplasty,THA)中的应用方法和临床效果.[方法]2019年5月—2020年6月采用三维术前规划辅助人工全髋关节置换术8例.术前行双髋关节三维CT薄层扫描,建立三维立体模型,三维图像上确定解剖标志点,分析原始解剖形态及病理改变,实施模拟手术操作和假体置入.根据术前规划实施真实THA.[结果]术后髋臼杯外展角(41.63±4.63)°、前倾角(19.13±5.57)°;术后股骨前倾角(14.38±6.35)°;肢体长度改变为(-0.40±1.06)mm.三维术前规划髋臼侧假体型号6例与术前规划相同,1例相差1号,1例相差2号;股骨侧假体型号3例同术前规划,3例相差1号,2例相差2号.[结论]三维术前规划可以较精准的预估假体型号、安放假体位置.展开更多
基金supported by the Korea Institute of Marine Science & Technology promotion (KIMST)
文摘he virtual erection simulation system was explained for a steel structure including ship and ocean plant blocks. The simulation system predicted the erection state to optimize any gap or overlap of blocks based on 3-D measurement data. The blocks were modified （cut） on the basis of the simulation result on the ground before erecting them by crane. The re-cutting process was not required and the blocks were erected into a mother ship speedily. Therefore, the erection time is reduced, increasing the dock turnover.
文摘<strong>Aim:</strong> To carry out a 3D vector reconstruction of the typical cervical vertebra from anatomical sections of the “Korean Visible Human” for educational purposes. <strong>Material and Methods:</strong> The anatomical subject was a 33-year-old Korean man who died of leukemia. He was 164 cm tall and weighed 55 kg. This man donated his body to science. Her body was frozen and cut into several anatomical sections after an MRI and CT scan. These anatomical sections were made using a special saw called a 0.2 mm thick cryomacrotome. Thus 8100 cuts were obtained. Only the sections numbered 940 to 1200 were used for our study. A segmentation by manual contouring of the different parts of the typical cervical vertebra was made using the software Winsurf version 3.5 on a laptop PC running Windows 7 equipped with a Ram of 8 gigas. <strong>Results:</strong> Our 3D vector model of the typical cervical vertebra is easily manipulated using the Acrobat 3DPDF interface. Each part of the vertebra accessible in a menu can be displayed, hidden or made transparent, and 3D labels are available as well as educational menus for learning anatomy. <strong>Conclusion: </strong>This original work constitutes a remarkable educational tool for the anatomical study of the typical cervical vertebra and can also be used as a 3D atlas for simulation purposes for training in therapeutic gestures.
文摘[目的]介绍三维术前规划在全髋关节置换术(total hip arthroplasty,THA)中的应用方法和临床效果.[方法]2019年5月—2020年6月采用三维术前规划辅助人工全髋关节置换术8例.术前行双髋关节三维CT薄层扫描,建立三维立体模型,三维图像上确定解剖标志点,分析原始解剖形态及病理改变,实施模拟手术操作和假体置入.根据术前规划实施真实THA.[结果]术后髋臼杯外展角(41.63±4.63)°、前倾角(19.13±5.57)°;术后股骨前倾角(14.38±6.35)°;肢体长度改变为(-0.40±1.06)mm.三维术前规划髋臼侧假体型号6例与术前规划相同,1例相差1号,1例相差2号;股骨侧假体型号3例同术前规划,3例相差1号,2例相差2号.[结论]三维术前规划可以较精准的预估假体型号、安放假体位置.
