http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
식도운동질환에 있어서 동위원소 식도통과검사와 식도내압검사의 비교연구
오정진(J . J . Oh),송치욱(C . W . Song),현진해(J . H . Hyun) 대한내과학회 1994 대한내과학회지 Vol.47 No.5
Objectives : Esophageal manometry and radionuclide esophageal transit study (RETS) are important tests for the esophageal motor function. So far, there are little available report concerning the correlation between two methods. In the present study, we have compared the results of esophageal manometry and RETS. Methods : Total 66 human subjects were employed in this study including 20 normals, 24 nonspecific esophageal motility disorders, 9 achalasia, 6 diffuse esophageal spasm, 3 hypertensive LES, 2 nutcracker and 2 scleroderma. In each subject, esophageal manomertic study was performed with low compliance pneumohydraulic capillary infusion system. Within 2 days of manometric study, each subject was studied for radionuclide esophageal transit using liquid containine 0.5 μci of Tc-99m tin colloid in supine position. Manometric parameters includes amplitude (A), duration (D) of the distal esophageal contraction, velocity (V) and prevalence of peristalsis (P), The number of abnormal contractions (ACT) and lower esophageal sphincter pressure (LESP) were also included in the parameters. Esophageal pressure (LESP) were also included in the parameters. Esophageal transit time (ETT) was defined as the time taken to reach 10% of the peak activity from the entry of the radionuclide. Results : In normal subjects, the mean ETT was 8.5±6.5 seconds (M±SD) and the mean manometry parameters including A, D, P, V, ACT and LESP were 86.3±37.2 mmHg, 98.2%, 3.4±0.9 cm/sec, 0.1±0.2 and 29.5±4.5 mmHg, respectively. In patients with various esophageal motility disorders ETT was delayed in variable degree from less than 15 seconds to more than 300 seconds. In order to find possible correlation between the ETT delay and manometry parameters, each parameter was compared in relation to ETT by regression analysis. We found an intimate relationship between ETT versus amplitude (r=-0.56, p<0.001), prevalence of perisalsis (r = -0.63, p<0.0001), velocity (r =-0.46, p<0.0015), and number of abnormal contractions (r=0.47, p<0.0011). However, neither duration of esophageal contraction nor LESP related to the ETT delay. Conclusions : Among the esophageal manometry parameters, A, V, P, ACT are related with esophageal transit. However, changes in LESP and duration of contraction are less important to estimate the esophageal transit.
송기욱(G.W. Song),현중섭(J.S. Hyun),하정수(J.S. Ha),조선영(S.Y. Cho) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
Most domestic fossil power plant have exceeded 100,000 hours of operation with the severe<br/> operating condition. Among the critical components of fossil power plant, high temperature steam pipe<br/> system have had a many problems and damage from unstable displacement behavior because of<br/> frequent start up and shut down. In order to prevent the serious damage and failure of the critical<br/> pipe system in fossil power plant, 3-dimensional displacement measurement system were developed for<br/> the on-line monitoring system. 3-D Measurement system was developed with using the LVDT type<br/> sensor and rotary encoder type sensor, this system was installed and operated on the real power plant<br/> successfully. In the future time, network system of on-line diagnosis for critical pipe will be designed.