Application of 3D Surface Scanners in Forensic Science and Medicine ( I ): Digital Storage of Human Skeletons and Development of Appraisal Methods for Incident Scenes / 대한법의학회지

The aim of this project was to use 3D scanning data collected at incident scenes and various evidence to 1) develop surveying methods based on 3D data consisting of overall and detailed scene evidence, captured by long-range and micros-canner, which can be shared by personnel working in different fields such as forensic medicine, video analysis, physical analysis, traffic engineering, and fire investigation; 2) create digital storage for human skeletons and set the foundation for virtual anthropology; and 3) improve the credibility of 3D evidence by virtual remodeling and simulation of incident scenes and evidence to provide a basis for advanced and high-tech scientific investigation. Two complete skeletons of male and female were scanned using 3D micro-scanner. Each bone was successfully reproduced and assembled in virtual space. In addition, recreating evidence scheduled for invasive examination by creating RP (rapid prototype) was possible. These outcomes could play an important role in setting up the new field of virtual anthropology. Case-specific surveying methods were developed through analysis of 3D scanning data collected by long-range surface scanners at the scenes of vehicular accidents, falls, shootings, and violent crimes. A technique and recording method was also developed for detecting forged seals by micro-scanning the pressure exerted on the seal. Appraisal methods developed in this project could be utilized to secure 3D data of human skeletal remains and incident scenes, create a standard for application, and increase objectivity, reproducibility, and accuracy of scanning methods. We plan to develop case-specific 3D data analysis techniques to improve the credibility of analysis at the NFS and to establish a 3D data collection and analysis team.

Clinical Studies on the 34 Cases of pm - Gastric Cancer / 대한소화기내시경학회지

The records of 34 patients with histologically proven pm-gastric cancer were reviewed from Chonnam University Hospital during the recent 6 year period, 1981, to 1986. The male outnumbered female in a ratio of 2.4:1.0. The peak incidence was 6th decade and mean age were 53.8 years in male, 48.7 years in female respectively. pm-gastric cancer was most often seen on the lesser curvature side, eapecially in the lower 1/3 of the stomach. Macroscopically, it can be divided into early-cancer-like type and Borrmann type. Early-cancer-like type was more frequent than Borrmann type. Early-cancer-like type IIc+III was most often seen with a rate of 20.6%, followed in the order of frequency by Borrman type II, early-cancer-like type IIc, IIa+IIc, and Ile+ IIa. The incidence of lymph node involvement was 26.4% and were related to the macroscopic types and/or histologic differentiation degrees. 5 cases out of 34 pm-gastric cancer expired during the follow up period, and their mean survival time was 32.8 months. The type of operation and the extent of resection were closely related to survival. Five year survival rate was 54.0%. These results shows the significance of the pm-gastrie cancer as a early simulating advanced cancer.