ABSTRACT
The diagnosis of post-concussion symptoms (PCS) has been a controversial issue because of that its pathogenesis is often involved in both neural damage and psychosocial factors. Recent researches have examined the diagnostic and evaluating value of several available methods or tools, including clinical interview, conventional CT and magnetic resonance imaging (MRI), neuropsychologic testing and neurochemical test. In mild traumatic brain injury (MTBI), there exist diffusive damages to white matter distributed particularly near the gray matter-white matter boundary and in the long white-matter tracts in midline structures. The conventional imaging techniques are unable to detect any positive evidence due to the diffusive nature of these injuries. This paper is to review epidemiologic study, diagnostic criteria and relevant disputes, conventional diagnostic strategy and new MRI techniques, and then evaluate the application and prospective value of them in the diagnosis and rating of PCS and MTBI. Non-invasively quantitative assessments of modern brain imaging technique may be developed to sensitive and promising tools in the diagnosis and forensic evaluation of PCS.
ABSTRACT
Dating of injury and the discrimination in trauma and disease is always an important hot topic in the field of forensic medicine. Lumbar disc herniation is a kind of physiological degeneration. To seek a method for deducing the occurrence time of traumatic LDH exactly, this article reviewed the correlation between humoral, celllur immunity and the occurrence time of LDH. It is suggested that some characteristic changes of the expression of IgG,IgM,macrophages may be a helpful method for the occurrence time deduction of traumatic LDH.
ABSTRACT
Objective To compare MSCT with routing X-ray, CT and appraise their applications to fractures in forensic identification. Methods366 cases which had got routing X-ray or CT examination were examined by thin slice scanning with MSCT and all of the data were processed with MPR, see-through and SSD method. Accurate diagnosis rate and misdiagnosis & underdiagnosis rate were calculated and analyzed by Chi-square test. ResultsThe accurate diagnosis rates of MSCT in nasal fracture, rib fracture, limb or joint fracture, orbital fracture and cranial fracture were higher than that of X-ray or routing CT (P0.05). The total accurate diagnosis rates of X-ray, routing CT and MSCT were 59.17%, 70.27% and 99.45%, respectively. There were significant differences (P
ABSTRACT
Objective To investigate the relationship between the parameter of P100 elicited by pattern stimuli, spatial frequency and visual acuity in the posttraumatic eyes. Methods 81 eyes sustained blunt injury in outpatients were enrolled from West China Hospital, Sichuan University. The control group was composed of 199 eyes without disease or trauma. Different P100 wave including amplitude and latency were recorded in each eye stimulated by reversal pattern with 5 - sized checkerboards. The data were processed by SPSS to describe the relationship between the visual acuity and the parameter of P100 wave. A linear and regression analysis was done in the statistic procedure. Results There was a high correlation between spatial frequency ( X) and the log visual acuity ( Y). Regression equations were deduced for evaluating the visual acuity. There was a correlation between the latency of P100 wave (X) and the log visual acuity (Y) in all the examined eyes. Conclusion The established regression equations can be used to evaluate the visual acuity as an accurate and objective method. There is a promising future of its application in the forensic clinical authentication of visual function.