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구진모 대한영상의학회 1993 대한영상의학회지 Vol.29 No.3
Radiologic findings of hemangioendothelioma of the liver were retrospectively analyzed in twelve infants. The radiological examinations included were sonography in 12 patients, computed tomograpy (CT) in six, magnetic resonance(MR) imaging in five, and angiography in two. Four patients were diagnosed pathologically, two by angiography, five by follow-up sonography, and one by cllinical presentation with sonography. The common radiologic findings of the hemangioendothelioma were well circumscribed heterogeneous echogenic mass(75%) on sonography, peripheral massive enhancement (67%) on CT, bright high signal intensity on T2-weighted MR image (100%), and homogenous or peripheral enhancement (75%) on Dd-DTPA enhanced T1-weighted MR image (100%), and homogenous or peripheral enhancement (75%) on GD-DTPA enhanced T1-weighted MR image. Dilated proximal aorta and enlarged draining hepatic veins on angiography and other studies were also important findgdings. The follow-up sonography demonstrated the involution of lesions with some calcification in four patients and complete resolution in one. The author believe that these findings in an infant under the age of 6 months strongly suggest the diagnosis of hemangioendothelioma of the liver, and follow-up sonography should be done.
구진모 대한영상의학회 2019 대한영상의학회지 Vol.80 No.5
Lung cancer is the leading cause of death from cancer worldwide. The most effective way to reduce lung cancer mortality is early detection and treatment. Two large randomized controlled trials (RCTs), the National Lung Screening Trial and the Dutch-Belgian Randomized Lung Cancer Screening Trial, showed that low-dose CT (LDCT) can reduce the chances of lung cancer death. This paper reviews the two aforementioned RCTs and the current situations of implementing LDCT screening in several counties. Although nationwide programs of lung cancer screening are rare, they would increase in the near future. Using the two aforementioned RCTs and accumulating data from many counties, including the East Asian countries, a more effective way of LDCT screening in Korea can be devised and implemented. 폐암은 세계적으로 암 사망의 주요 원인이고, 폐암 사망률을 감소시키는 가장 효과적인 방법은 폐암의 조기 발견과 치료이다. 이제 미국의 National Lung Screening Trial과 유럽의NELSON을 포함한 두 개의 무작위 대조군 연구에서 저선량 CT가 폐암 사망을 줄일 수 있음을 보여주었다. 본 논문은 그동안 시행되어왔던 무작위 대조군 연구와 몇 나라들의 저선량 CT 를 이용한 폐암검진 적용 현황을 기술하고자 한다. 비록 국가적인 폐암검진은 드물지만 가까운 미래에 많은 나라에서 저선량 CT 폐암검진을 시행할 것으로 예상된다. 두 개의 무작위 대조군 연구와 동아시아 국가들을 포함한 다른 많은 나라들에서 축적되고 있는 데이터를 참조함으로써, 우리나라에서 적용할 더 효과적인 저선량 CT 폐암검진 방법을 고안하고 시행할 수 있을것이다.
Browning technology for shiitake in sawdust using LED source
구진모,이상화,이성학,박우람,황재순,김민경,준형서,정희영,조우식 한국버섯학회 2018 한국버섯학회지 Vol.16 No.4
The incorporation of Shiitake culture into sawdust is a widely utilized technique that can assist in reducing the cost and time consumption associated with oak cultivation. In sawdust cultivation, browning of the surface mycelia is an important stage with respect to the utility and longevity of the sawdust media. Surface browning forms a protective coating on the substrate, which can inhibit the invasion of pathogens and suppress water evaporation. Several different light sources (red LED, white LED, blue LED, and fluorescent light) were used and the intensity of illumination was carefully controlled (1.5, 10.5, 20.5 μmol/m2s for LEDs and 10, 100, 300 lux for the fluorescent light) to induce browning. The light sources were regulated via a 1 h on/off cycle in a controlled room environment at a temperature of 20°C, 60% humidity, and 1200 ppm CO2 concentration for 60days.The browning effect varied depending on the source and the intensity of illumination. This effect was most effectively induced at 1.5 μmol/m2s for the red and blue LEDs. All light sources induced less browning at the highest intensity of illumination. This indicates that intensity values higher than 20.5 μmol/m2s in the case of the LEDs and 300 lux for the fluorescent light are not effective. After harvesting of the fruit bodies, we measured the weight, length, and width of the pileus and stipe in addition to their chromaticity and hardness. Treatment with 1.5 μmol/m2s blue LED produced the best harvest with the highest average chromaticity, weight (21.2 g), stipe length (30.8 mm), and hardness (377.9 g), with a fine length and width of the pileus.