数字化虚拟中国人女性一号(VCH-F1)实验数据集研究报告

摘要

目的为建造具有东方人种特征的中国数字化虚拟人,获取中国女性人体数字图像的数据集.方法通过广州市遗体捐献中心,选取一位因食物中毒急性死亡19岁女性尸体,经CT、MRI采集图像后,在股动脉灌注红色填充剂,冷冻包埋,在JZ1500A立式铣床上,以400mm刀盘切削,转速850r/m,断面间距0.2 mm,用第三代富士数码相机摄像.结果按中国解剖学会的<中国人解剖学数据>加以评价,VCH-F1体型指数为94%,有较大的代表性.共获取断面图像8 556个,图像总像数649万,每个文件数据量为17.5MB,VCH-F1数据集总量149.7GB.共编制6个不同版本,分别为VCH-F1(149.73GB、6.60GB、0.27GB)及VCH-F1头部数据集(1.93GB、0.67GB、0.46GB).结论借鉴国外经验和教训,VCH-F1在下列几个方面有所改进和提高:(1)尸体选材代表性较大;(2)血管标记鲜明,对后续图像配准和分割提供了良好条件;(3)立式切削较卧式切削更符合人体生理姿势;(4)本文采用的人体的冷存,一次装夹,双温冰库,大口径刀盘处理,能提高图像质量和工作效率.VCH-F1的实验数据集,在若干关键技术上有所改进和提高,构建了切削精度高,血管显示鲜明,体型代表性良好,为我国今后虚拟人体的物理化和生理化,提供了一个高质量的框架.%Objective To establish digitized virtual Chinese No. 1 female (VCH-F 1) image database. Methods A 19 years old female cadaver was scanned by CT, MRI, and perfused with red filling material through formal artery before freezing and embedding. The whole body was cut by JZ1500A vertical milling machine with a 0.2 mm inter-spacing. All the images was produced by Fuji FinePix S2 Pro camera. Results The body index of VCH-F1 was 94%. We cut 8 556 sections of the whole body,and each image was 17.5 MB in size and the whole database reached 149.7 GB. We have totally 6 versions of the database for different applications. Conclusions Compared with other databases,VCH-F1 has good representation of the Chinese body shape, colorful filling material in blood vessels providing enough information for future registeration and segmentation. Vertical embedding and cutting helpd to ratain normal human physiological posture, and the image quality and operation efficiency were improved by using various techniques suth as one-time freezing and fixation, double-temperature icehouse, large-diameter milling disc and whole body cutting.