Relationship between Body Height and Craniofacial Lines Measured by CT in Southwest Han Males / 法医学杂志

Objective To establish regression m odel betw een craniofacial lines and body height by m ea-suring craniofacial lines in Southw est H an m ales using C Tand to accum ulate data for the study of foren-sic anthropology. Methods H ead C Tdata of 273 H an m ales in Southw est w ere collected and 7 cranio-facial lines w ere determ ined. M ultiplanar reconstruction and volum e rendering w ere perform ed by im age post-processing softw are and the selected lines w ere m easured. The relationship betw een each m easuring indicator and body height w as analyzed using SPSS 21.0 softw are. The regression equation of body height estim ation w as established and 50 sam ples w ere selected again and put into the m athem atics m odels to verify its accuracy. Results The linear regression equations of 7 lines w ere established (P<0.05). The correlation coefficients of the unary linear regression equations w ere 0.190-0.439 and the standard errors of the estim ate (SEE) w ere 4.597-5.023 cm . The correlation coefficients of the m ultiple linear regression equation w ere 0.494-0.524 and the SEEw ere 4.418-4.458 cm . The return tests show ed that the highest ±1SEEaccuracy of the m ultiple regression equation:y=83.959+3.589 x6+2.573 x2, w ere 30%;and the highest ±2SEEaccuracy of the m ultiple regression equation: y=72.646+3.316 x6+1.586 x2+1.553 x4+2.211 x3, w ere 92% . Conclusion There is significant linear correlation betw een 7 selected lines and the stature in this study, and the plural linear regression equation established could be applied for estim ating the stature of Southw est H an m ales.

Analysis of 163 Rib Fractures by Imaging Examination / 法医学杂志

Objective To explore the applications of im aging exam ination on rib fracture sites in forensic identification. Methods Features including the sites, num bers of the processed im aging exam ination and the first radiological technology at diagnosis in 56 cases of rib fractures from 163 injuries were retro-spectively analyzed. Results The detection rate of the rib fractures within 14 days was 65.6% . The ini-tial detection rate of anterior rib fracture proceeded by X-ray was 76.2%, then 90.5% detected at a sec-ond tim e X-ray, while the detection rate of CTwas 66.7% and 80.0%, respectively. The initial detec-tion rate of rib fracture in axillary section proceeded by X-ray was 27.6%, then 58.6% detected at a second tim e X-ray, while the detection rate of CTwas 54.3% and 80.4%, respectively. The initial de-tection rate of posterior rib fracture proceeded by X-ray was 63.6%, then 81.8% detected at a second tim e X-ray, while the detection rate of CTwas 50.0% and 70.0%, respectively. Conclusion It is im por-tant to pay attention to the use of com bined im aging exam inations and the follow-up results. In the cas-es of suspicious for rib fracture in axillary section, CTexam ination is suggested in such false X-ray negative cases.