摘要
目的探讨MSCT及后处理功能在法医鉴定中的应用方法。方法对366例法医鉴定者行MSCT薄层扫描并表面遮盖成像（SSD），透明化X线模拟投影（see-through）和多平面重建（MPR）处理。分析技术参数和应用方法。结果采集层厚1-3mm，重建间隔0．5～1mm。SSD重建366例，其中细小骨折显示欠佳，4例眼眶重建出现“假孔”。21例关节分解后关节面显示清晰。透明化X线模拟投影重建18例，准确鉴别新鲜与陈旧骨折。MPR重建366例，显示骨折326例。结论选择适宜的后处理技术并联合应用可更好的显示骨折，为法医鉴定提供高质量图像。
Objective To explore the practical method of MSCT and post-processing functions of fractures in forensic identification. Method 366 cases were examined by thin slice scanning with MSCT and diagnosed with MPR, see-through and SSD method. The parameters and processing skills were summarized and analyzed. Results Slice thickness was 1 3 mm and reeon struction interval was 0. 5-1mm. Of 366 SSD images, 4 cases of orbital fracture shown ＂phony hole＂ and some tiny fractures disappeared or displayed faintly. Articular surfaces were shown clearly in 21 cases after disassembled with software. 18 cases of old fracture were distinguished with see-though method and 326 cases were diagnosed correctly with MPR. Conclusion Fracture line can be revealed more exactly and vividly with single or combined method such as SSD, MPR etc. It could provide high quality images to forensic identification.
出处
《刑事技术》
2006年第1期19-21,共3页
Forensic Science and Technology
关键词
多层螺旋CT
骨折
方法
临床法医学
Multi-slice helical CT
Fracture
Methods
Clinical forensic medicine
