由于市区的迅速发展,公路建设项目也逐步扩展。随着国家经济的快速发展,公路建设项目的建设也越来越受到人们的重视。为了能够切实地保证公路项目的品质,必须在建设之前对公路项目进行科学的测量。随着互联网和信息化技术的快速发展,公...由于市区的迅速发展,公路建设项目也逐步扩展。随着国家经济的快速发展,公路建设项目的建设也越来越受到人们的重视。为了能够切实地保证公路项目的品质,必须在建设之前对公路项目进行科学的测量。随着互联网和信息化技术的快速发展,公路工程测绘的新技术逐步被发展和运用,其中三维激光成像技术已经成为人们关注的热点,并在实践中获得了很好的效果。在公路施工中,常规的公路施工方法存在着工作效率低下,不但要进行高精度的检测,还要耗费大量的人力物力,而采用三维的激光扫描技术,不但可以将数据进行 3D 的分析,还可以在一定范围内绘制出被检测目标的范围,从而最大限度地确保了数据的准确性,同时还可以提供更高的参照,这是一种非常优秀的测量法。展开更多
With the rapid development of medical technology,3D printing technology with realistic representation can perfectly display static human anatomy,while 3D visualisation technology based on Web Graphics Library(WebGL)ca...With the rapid development of medical technology,3D printing technology with realistic representation can perfectly display static human anatomy,while 3D visualisation technology based on Web Graphics Library(WebGL)can promote the rigid replication characteristics of traditional teaching models and express the dynamic spatial relationship between different anatomical structures.Medical students traditionally have less cognition of ankle ligament sprains.In this study,computed tomography(CT)and magnetic resonance imaging(MRI)data of the ankle joints of volunteers were used to print models of the ankle bone,tendon,and ligament using 3D printing technology,and a real-time interactive 3D digital model of the functional ankle joint was designed using 3D visualisation based on WebGL and 2D image real-time rendering technology for interactive teaching.The utility of the 3D printing model combined with the WebGL-based 3D digital teaching model was evaluated in comparison with traditional teaching methods in 24 medical students.The results showed that the total score of students in the experimental group(mean±SD,79.48±12.93)was significantly better than that of the control group(61.00±14.94)with P<0.05.The practical test scores of the experimental group(18.00±2.70)were significantly higher than those of the control group(13.67±4.96)with P<0.05.In the satisfaction survey,the feedback questionnaire showed that the interactive teaching model of 3D printing technology combined with WebGL-based 3D visualisation technology was recognised by students in terms of quality and overall satisfaction.In addition,female students who used 3D printing combined with WebGL-based 3D visualisation technology as learning aids had a greater difference in practical test scores from the control group than male students.This study has demonstrated that the interactive teaching mode of 3D printing combined with WebGL-based 3D visualisation technology is beneficial to the teaching of medical imaging,enriching the learning experience of students,and increasing the interaction between teachers and students.展开更多
The study aimed to explore the feasibility of an image registration technique for assessing the accuracy of intraoperative osteotomy of pelvic tumors by 3-dimensional(3D)-printed patient-specific templates.Patients wi...The study aimed to explore the feasibility of an image registration technique for assessing the accuracy of intraoperative osteotomy of pelvic tumors by 3-dimensional(3D)-printed patient-specific templates.Patients with malignant pelvic tumors who were admitted to our hospital between March 2014 and December 2020 were retrospectively enrolled.Patients underwent hemi-pelvic resection and reconstruction by 3D-printed individualized prostheses.The registration between the designed model and the postoperative segmented model of the prosthesis was used to obtain the intraoperative osteotomy plane and reduce metal artifacts in postoperative computed tomography(CT)images.The distance and angle between the planned and actual osteotomy planes were then used to assess the accuracy of the intraoperative osteotomy.Eight patients with 13 osteotomy planes were enrolled,including four males and four females.The median age at the time of imaging examination was 44 years(range,33–54 years).All intraoperative osteotomy planes were assessed successfully.The mean distance between the planned and true intraoperative osteotomy planes was−0.69 cm(−7.5–7.35 cm),and the mean angle was 6.57°±3.36°(1.05°–11.88°).This new assessment method of registering the designed model and the postoperative CT segmented model of the prosthesis may be used to assess the accuracy of intraoperative osteotomy for pelvic tumors,using 3D printed patient-specific templates.展开更多
文摘由于市区的迅速发展,公路建设项目也逐步扩展。随着国家经济的快速发展,公路建设项目的建设也越来越受到人们的重视。为了能够切实地保证公路项目的品质,必须在建设之前对公路项目进行科学的测量。随着互联网和信息化技术的快速发展,公路工程测绘的新技术逐步被发展和运用,其中三维激光成像技术已经成为人们关注的热点,并在实践中获得了很好的效果。在公路施工中,常规的公路施工方法存在着工作效率低下,不但要进行高精度的检测,还要耗费大量的人力物力,而采用三维的激光扫描技术,不但可以将数据进行 3D 的分析,还可以在一定范围内绘制出被检测目标的范围,从而最大限度地确保了数据的准确性,同时还可以提供更高的参照,这是一种非常优秀的测量法。
基金the Clinical Research Plan of SHDC(No.SHDC2020CR3083B)the Technology Project of Shanghai Science and Technology Commission(Nos.19441902700,and 18441903100)the Shanghai Municipal Education Commission-Gaofeng Clinical Medicine Grant Support(No.20152221)。
文摘With the rapid development of medical technology,3D printing technology with realistic representation can perfectly display static human anatomy,while 3D visualisation technology based on Web Graphics Library(WebGL)can promote the rigid replication characteristics of traditional teaching models and express the dynamic spatial relationship between different anatomical structures.Medical students traditionally have less cognition of ankle ligament sprains.In this study,computed tomography(CT)and magnetic resonance imaging(MRI)data of the ankle joints of volunteers were used to print models of the ankle bone,tendon,and ligament using 3D printing technology,and a real-time interactive 3D digital model of the functional ankle joint was designed using 3D visualisation based on WebGL and 2D image real-time rendering technology for interactive teaching.The utility of the 3D printing model combined with the WebGL-based 3D digital teaching model was evaluated in comparison with traditional teaching methods in 24 medical students.The results showed that the total score of students in the experimental group(mean±SD,79.48±12.93)was significantly better than that of the control group(61.00±14.94)with P<0.05.The practical test scores of the experimental group(18.00±2.70)were significantly higher than those of the control group(13.67±4.96)with P<0.05.In the satisfaction survey,the feedback questionnaire showed that the interactive teaching model of 3D printing technology combined with WebGL-based 3D visualisation technology was recognised by students in terms of quality and overall satisfaction.In addition,female students who used 3D printing combined with WebGL-based 3D visualisation technology as learning aids had a greater difference in practical test scores from the control group than male students.This study has demonstrated that the interactive teaching mode of 3D printing combined with WebGL-based 3D visualisation technology is beneficial to the teaching of medical imaging,enriching the learning experience of students,and increasing the interaction between teachers and students.
基金the Technology Project of Shanghai Science and Technology Commission(Nos.19441902700 and 18441903100)the Clinical Research Plan of SHDC(No.SHDC2020CR3083B)the Shanghai Municipal Education Commission(No.20152221)。
文摘The study aimed to explore the feasibility of an image registration technique for assessing the accuracy of intraoperative osteotomy of pelvic tumors by 3-dimensional(3D)-printed patient-specific templates.Patients with malignant pelvic tumors who were admitted to our hospital between March 2014 and December 2020 were retrospectively enrolled.Patients underwent hemi-pelvic resection and reconstruction by 3D-printed individualized prostheses.The registration between the designed model and the postoperative segmented model of the prosthesis was used to obtain the intraoperative osteotomy plane and reduce metal artifacts in postoperative computed tomography(CT)images.The distance and angle between the planned and actual osteotomy planes were then used to assess the accuracy of the intraoperative osteotomy.Eight patients with 13 osteotomy planes were enrolled,including four males and four females.The median age at the time of imaging examination was 44 years(range,33–54 years).All intraoperative osteotomy planes were assessed successfully.The mean distance between the planned and true intraoperative osteotomy planes was−0.69 cm(−7.5–7.35 cm),and the mean angle was 6.57°±3.36°(1.05°–11.88°).This new assessment method of registering the designed model and the postoperative CT segmented model of the prosthesis may be used to assess the accuracy of intraoperative osteotomy for pelvic tumors,using 3D printed patient-specific templates.
