Min-Cheol Jeon

Development of a Femur Neck Bone Mineral Density Measuring Device for Accurate Examination

In bone density examinations, a change in the measured BMD occurs owing to the differences between the measured areas. To address this problem, we aimed to develop a new auxiliary device that could be rotated by 15o by fixing the ankle to the distal femur neck. Dual energy X-ray absorptiometry (DXA) of BMD examinations were performed once a year, but 10 patients were examined over three sessions to analyze the area for measuring the femur neck BMD. The goal of this test was to determine the device’s reliability, and the results were expressed in terms of the standard deviation of measurements. After performing bone density measurements using the new auxiliary device on 10 normal patients, with three measurements for each patient, the obtained standard deviation was 0.03. The standard deviation of the measured BMD was 0.19 when using the currently existing auxiliary device, while the standard deviation of the measured BMD was 0.03 when using the new auxiliary device. By using the new auxiliary device, the standard deviation could be reduced by ~80%. Accurate rotation of the femur neck was possible in all examinations, and the standard deviation of BMD measurements could be reduced by up to 80% compared with the measurements performed using the currently existing auxiliary device. We hope that this advantageous new design can be used as a standard auxiliary device for measuring the femur neck BMD.

Evaluation of image reconstruction according to changing physical parameter

This study is to determine an optimum kernel, which objectively compares and analyzes the image according to physical parameters such as FBP, which is widely used in abdominal CT, as well as SAFIRE, which was developed recently. CT images were acquired with a 20-cm-diameter cylinder phantom filled with water and a SOMATOM Definition Edge CT (Siemens Healthcare). The images were reconstructed with a 3-mm-thick kernel such as FBP, which has B10 (very smooth), B20 (smooth), B30 (medium smooth), B40 (medium), B50 (medium sharp), and SAFIRE, which has I30 (strength 1 to 5) and I40 (strength 1 to 5). SNR, PSNR, RMSE, MAE and Plot profile were measured using the image J (version 1.49q; National Institutes of Health, Bethesda, MD, USA) in reconstructed images. In conclusion, the optimum kernel for abdominal CT should be a SAFIRE I30 kernel of strength 1.

A Survey on Perception Level of the Radiological Technologist's about Culture of Patient Safety

Patient safety culture for the general hospital to investigate the perception of radiological technologists, managing of the patient safety provides the Foundation for the safety activities as a basis to develop a program for providing. Patient safety culture for the general hospital to investigate the perception of Radiological technologists, the duration of the survey of the study on June 13, 2012 to June 20, and five general hospitals worked on Radiological technologists workers were material and analyzed the target of 198 (SPSS ver. 19.0). Patient safety activities within the Department, the factors affecting direct care, communication, medical malpractice, hospitals rated, safe for the patient safety culture and the reported accidents, dangerous and caused an accident, most feel that patient safety incident reporting system according to the results of evaluating medical accidents patient safety culture regarding recognition, work appeared in more than 25 years, even the most highly evaluated, the working period of 10 patient safety to 15 years the most highly. Therefore, General Hospital, Director of the patient safety culture improvement of radiation in order to have sufficient staffing, aggressive approach to patient safety issues, and safe working period of relapse prevention of accidents to the radiation as well as giving systematic consideration of mission medical accident reporting system will be active.