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Development of a Magnetic Field Measurement Instrument for Compact Cyclotrons
이병노,김현욱,Jin-Hwan Oh,박기현,채종서 한국물리학회 2012 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.61 No.2
A magnetic field measurement instrument for compact cyclotrons has been developed. Forty-eight Hall sensors are used for magnetic measurements, and a set of four Hall sensors is allocated to each channel. The magnetic field and the offset are tabulated with a permanent 4,500-G magnet. The measurement device is made to be thin, long, and rectangular, to overcome the narrow gap between upper and lower hills in a compact cyclotron (2 ∼ 3 cm). This instrument measures a magnetic field signal in the unit of Tesla and transforms it to a voltage signal as an output. The instrument has a 0.1-percent field-measurement stability margin and can be used to measure the magnetic field produced by a 9-MeV cyclotron magnet.
李炳盧,金俊錡,崔達永 동국대학교 한의학연구소 2000 東國韓醫學硏究所論文集 Vol.9 No.-
이제마는 사상의학의 생리, 병리를 설명함에 있어서 상한론을 많이 인용하였는데 치법에 있어서는 상한론의 것과 일치하지 않으며 특히 소음임편에서는 상한론의 한법이나 하법에 대해서 많은 비판을 가하고 있다. 이에 동의수세보원 소음인편에 나타난 상한론 인용문과 동무의 의론을 한법과 하법을 위주로 비교하여 본 결과 사상의학과 상한론은 공통적인 사기의 개념과 병증구성상의 표리구조를 가지고 있었으며, 한과 하의 개념에 있어서도 별다른 차이가 없었다. 그러나 치료법에 있어서 사상의학에서는 소음인에 대하여 승양이 안되는 체질상의 부족을 보충하는 승양익기법을 중요시하여 상한론과 차이가 남을 알 수 있었다. The main purpose of this study is to lay the groundwork of mutual assistance between Shnngknlun and Sa-sang Constitutional Medicine by looking into their differences and similarities in the concept and the medical treatment in the diaphoretic therapy and the purgative therapp. The study compared Shanghan Jomun quoted in Soeumin, Dongy-Soose-Boum m:ith Je-ma, Lee s Theory of Medicine. And its conclusion is the following: 1. Both Shanghlun and Sa-sang Constitutional Medicine connote the concept of pathogenic factors in the Nae-Kyung hfedicine as the medicinal substances. And both of them have the fundamental structure of exterior-to-interior movements in the symptoms of disease to appear when pathogenic factors penetrate into the bodies. 2. Sa-sang Constitutional Medicine has treated the causes and the mechanism of disease in the symptoms of disease differently from other therapies: focusing on the body's constitutional symptom of disease, namely Soeumin's lack of the Yang-Qi and the poor Ascending Yang, not an attack on pathogenic factors as a interior-exterior symptom. Therefore Ascending-yang Suppiling Qi. which fills up the lacking parts of the body and keeps the balance of the body fitted in one's constitution, has been used rather than the diaphoretic and purgative therapy. 3. As Shanghlun and Sa-sang Constitutional Medicine have the similarities in the interior-to-exterior structure, pathogenic factors, and the notion of diaphoresis and purgation, they do so in the principle of the medicinal substance and the therapy. However, there are actually differences of carrying out the diaphoretic and purgative therapy and other treatments between Shangtnnlun and Sa-sang Constitutional Medicine by the reason of the dissimilarities in the mechanism of disease and focal points.
Design Study of a 9 MeV Compact Cyclotron System for PET
이병노,신승욱,송호승,김현욱,채종서 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.11
A cyclotron is an accelerator which can be applied to both cancer diagnosis and treatment. Among commercially sold cyclotrons, the major energy is used for positron emission tomography (PET) ranges from 10 to 20 MeV. In this research, 9 MeV compact cyclotron for PET was designed. The research was conducted on the response cross section and the yield for the energy distribution to decide the design features. Also, it was determined the specifications on the basis of the fluorodeoxy-glucose (FDG) maximum dose. The machine, which has a 20 uA beam current, is designed to be installed in small-to-medium-sized hospitals in local cities because of its relatively light weight (6tons). This compact cyclotron, which provides 9-MeV proton beams, is composed of a azimuthally varying field (AVF) electromagnet, 83-MHz RF systems with a 20 kW amplifier, a panning ion gauge (PIG) type ion-source for negative hydrogen, and a double-stage high-vacuum system. The basic model design was done by using 3-D CAD program, CATIA and all the field calculations were performed using commercial electromagnetic field analysis code, OPERA-3D TOSCA. From this research, we expect a time reduction for FDG production, a decrease of radioactive exposure for workers, and an equipment cost reduction.