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황일웅 ( Hwang Il-ung ),이희경 ( Lee Hee Kyeong ),고재경 ( Ko Jae Kyung ),고현범 ( Ko Hyun Bum ),김경애 ( Kim Kyung Ae ),최훈정 ( Choi Hun Jung ) 국군의무사령부 2010 대한군진의학학술지 Vol.41 No.1
Objective: Brugada syndrome(BS), accounting for 40∼60% of indiopathic ventricular fibrillation(VF), is one of main causes of sudden cardiac deaths(SCD) in the young. It shows high incidence in Asean countries and extreme male predominance. Patients with BS are usually asymptomatic but become fatal when the VF is triggered. Typical Brugada-type ECG shows RBBB with the elevation of ST segment in V1∼3 without structural abnormalities. The prevalence of Brugada-type ECG has been reported 0.05%(Europe)∼ 0.4%(Japan). To find soldiers who have Brugada-type ECG but asymptomatic, a ECG screening was performed to 10,182 soldiers. Method: The authors used special ECGs mounted with CDMA wireless modem. After being checked the quality, every ECG was transmitted to a server computer located in 400km far from the base. BP were recorded. Every soldier was inquired about the history of the syncope and the SCD of family member. ECGs were interpreted by 13 cardiologists who specialized in ECG. The ECGs found out positive were reviewed by another 3 cardiologists. Results: Of 10,182 soldiers, 51(0.5%) showed Brugada-type ECG. 1 was type 1, 33 were type 2, 17 were type 3. 14 had histories of syncope. 3 experienced multiple episodes of syncope. 8 had family histories of sudden death. 1 of 51 confirmed as a brugada syndrome after EP study following flecainide provocation test. Conclusions: Prevalence of Brugada type ECG in korean young male is pretty high. The prevalence of general population may be higher than the result of this study.
多機能 파노라마放射線撮影裝置를 利用한 下顎海綿骨質의 評價
高在炅,金在德 대한구강악안면방사선학회 2000 Imaging Science in Dentistry Vol.30 No.1
Purpose : To evaluate the bone densities measured on copper-equivalent image of cross sectional view of mandibular edentulous premolar area obtained by multifuctional panoramic x-ray machine, PM 2002 CC with transversal slicing system. Materials and Methods : Panoramic cross sectional vlews with 8 mm focal layer of aluminum step and blocks, of hydroxyapatite (HA) step, 6 HA blocks and copper step wedge having 0.03 mm thickness of each step, and of 3 bone blocks cutted by 8 mm thickness mesiodistally and a dry mandible with copper step wedge were taken by using transversal slicing system in PM 2002 CC. All reference-equivalent images were made and analyzed by NIH Image program. Results : The average copper-equivalent value of cancellous bone of bone blocks on the panoramic cross sectional view was 0.026 ± 0.020 mm Cu. The calculated average bone density was 0.38 g/㎠. There was no significant difference (P>r 0.1) between the bone densities on intraoral digital view and on the panoramic digital cross sectional view. Conclusion : The copper-equivalent image of panoranuc digital cross sectional view obtained by PM 2002 CC with very thin copper step wedge was supposed to be useful to measure the bone density of cancellous bone of mandible at the premolar edentulous area. (Korean J Oral Maxillofac Radiol 2000; 30: 16-22)