Age assessment by three-dimensional reconstructions of pubis symphysis via magnetic resonance imaging
10.13618/j.issn.1001-5728.2017.03.007
- VernacularTitle:重建耻骨联合三维结构用于活体年龄推断的技术方法
- Author:
Xiaoping LAI
;
Zhengfeng PENG
;
Qinyun WANG
;
Zhitang CHEN
;
Ruitao ZHOU
;
Quanhui ZHONG
;
Huanyi YANG
;
Yiling FU
;
Jingyu YE
- Keywords:
forensic anthropology;
magnetic resonance imaging;
pubic symphysis;
three-dimensional reconstruction
- From:
Chinese Journal of Forensic Medicine
2017;32(3):257-260
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish a method of quick three-dimensional (3D) reconstruction of pubic symphysis based on magnetic resonance imaging. Methods The pelvis images of adult male were generated on a 3.0 T scanner using a T1 Gradient Echo FLASH-3D (T1- FL3D) sequence and imported the images into medical image control system. Segmentation of binaryzation threshold was conducted and pelvic soft tissue image was extracted by regional growth, 3D structure model of pubic symphysis was obtained by Boolean operation. The 3D structure model of pubic symphysis was established by the noise reduction of reverse engineering software. And compared with the 3D reconstruction model pubic bone CT scan. Results The morphological characters of the MRI pubic symphysis 3D model, such as the ridges and furrows on the symphysial surface, lower extremity, dorsal margin (beveling), margin (beveling) and pubic tubercle, were highly consistent with the morphological characters of the 3D model established by CT scan. Conclusion MRI scan can be used to reconstruct the 3D structure of pubic symphysis quickly and effectively, and it can provide a safe radiation-free 3D visualization imaging technique for forensic age estimation for the living.
