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Computer Assisted Learning (CAL) 프로그램의 작성
한만청(Man Chung Han),강흥식(Heung Sik Kang),한준구(Joon Koo Han),임정기(Jung Gi Im),최병인(Byung Ihn Choi) 한국의학교육학회 1989 Korean journal of medical education Vol.1 No.1
Recently, computers are more and more widely used in many aspects of medicine, including education, and using computers to assist in traditional learning has many advantages. Authors developed Computer Assisted Learning (CAL) systems, which were consisted of Apple II computer and VTR controlled by the computer to present X-ray images and meticulously designed questions with computer aided feed back alternately to facilitate the understanding of the students. So authors present the one of the CAL program. Bone and Joint Radiology , in detail to introduce the perspective of the system and discuss the benefit of the CAL system and the advantage and disadvantage of the image presentation by the VTR. With recent advance in computer technology, presentation of the better quality images and random access to the image files are enabled that CAL system vill give greater benefit to the traditional education and the development of the better designed CAL system and program is expected.
김정룡(Chung Yong Kim),최병인(Byung Ihn Choi),한만청(Man Chung Han),김수태(soo Tae Kim),박경주(Kyung Joo Park),이병희(Byung Hee Lee) 대한소화기학회 1987 대한소화기학회지 Vol.19 No.1
N/A A retrospective review of CT finding was undertaken from 89 patients who had hepatocellular carcinoma confirmed by histopathologically or clinically. In morphologic classification, solitary type was the most frequent one (43 cases) followed by multinodular type (27) and diffuse type (19) in order of frequency. Bulging of liver contour due to tumor was seen in 45 cases (50%). Size of the tumor in solitary type (43 cases) was mostly larger than 3cm in diameter except 6 cases. 44 cases were located in the right lobe, 19 cases in the left lobe and the remainder involved both lobes. Pre-contrast CT revealed the tumors in the 57 cases (64%) out of 79 cases in which pre-contrast CT was performed, however, detection rate increased up to 98% (87 out of 89 examinations) in post-contrast CT. A majority of tumors showed low density in both pre-contrast CT (64 cases) and postcontrast CT (85 cases) and 3 tumors had calcification in the lesion. 22 cases (25%) showed portal vein invasion in CT and regional lymph node enlargement was demonstrated in 24 cases (27%). Variable cirrhotic pattern was noticed in 55 cases (62%) of hepatocellular carcinoma.
소 간세포암의 전산화단층촬영 소견 - 조영제 증강 전후 소견의 비교검토 -
김정룡(Chung Yong Kim),이효석(Hyo Suk Lee),최병인(Byung Ihn Choi),한만청(Man Chung Han),김수태(soo Tae Kim),김주완(Chu Wan Kim),김용일(Yong Il Kim),이건욱(Kuhn Uk Lee) 대한소화기학회 1988 대한소화기학회지 Vol.20 No.3
N/A Sixty-seven lesions of small hepatocellular carcinoma in 50 patients under 5cm in diameter detected by computed tomography (CT) were reviewed to characterize the CT feature. All 50 patients were studied with a CT-9800 scanner. CT scans were obtained both before and after administration of contrast medium given by bolus injection of 120 ml of meglumine iohatlamate. CT density of the tumor was classified as hypodense, isodense, and hyperdense on the basis of the difference in density between the lesion and the surrounding liver parenchyma. Detectability of small hepatocellular carcinoma on CT scans was divided into three categioies; Good: tumor is noted, and extent of tumor is clearly defined; Fair: tumor is noted, but extent of tumor is not defined; Poor: tumor is not noted. On nonenhanced CT scans, 40 cases (60%) showed hypodense masses and 27 cases (40%) showed isodense masses whereas all cases showed hypodense masses on contrast-enhanced CT scans. On nonenhanced CT scans, 27 cases (40%) were categorized as good, 13 cases (20%) as fair, and 27 cases (40%) as poor while 65 cases (97%) were categorized as good, and 2 cases (3%) as fair on contrast-enhanced CT scans. Additional CT characteristics of small hepatocellular carcinoma were well defined margin (99%), and peripheral hyperdense rim (44%). These results suggest that contrast-enhanced CT scans are better than nonenhanced CT scans in detecting and defining the tumor, and CT might be useful for characterization of small hepatocellular carcinoma.
복부대동맥과 주요분지의 정상변형에 관한 방사선학적 고찰
한문희,윤엽,한만청,Han, Moon-Hee,Yoon, Yup,Han, Man-Chung 대한영상의학회 1981 대한영상의학회지 Vol.17 No.1
The study was to evaluate the normal variations of abdominial aorta and its major branches in Koreans. Using a total of 363 abdominal angiograms and selective organ angiograpms, normal variation of aorta and its major branches including level of aortic bifurcation and of origin of major branches, multiplicity of renal arteries and variations of celiac trunk ewer observed and analyzed. The results are as follows ; 1. The celiac trunk usually arises form aorta at the level between middle 1/3 of 12 th thoracic vertebra and upper 1/3 of 1st lumbar vertebra, most frequently at the level of the lower 1/3 of 12 th thoracic vertebra. 2. The superior mesenteric artery usually arises form aorta at the level between disc space of 12 th thoracic vertebra and middle 1/3 of 1st lumbar vertebra, most frequently at the level of upper 1.3 of 1st lumbar vertebra. 3. The both renal arteries usually arise form aorta at the level between middle 1/3 of 1st lumber vertebra and disc space of 1st lu bar vertebra, most frequently at the level of lower 1/3 1st lumbar vertebra. The frequently of the multiple renal artery was 19% and right than left side in 56%. 4. The level of aortic bifurcation is usually at the level between middle 1/3 of 4th lumbar vertebra and disc space of 4th lumbar vertebra, most frequently at the level of lower 1/3 of 4th lumbar vertebra. 5. The classical normal pattern of celiac and hepatic arteries was shown in 74.6%, Anomalous origin of common heaptic artery was seen in 1.9%, anomalous origin of right hepatic artery in 5.8% and accessory right hepatic artery in 2.9% . Anomalous origin of splenic artery was in 1.3% and originated from superior mesenteric artery.
황정해,조성현,김창엽,서정돈,한만청,이정예,Hwang, Jeong-Hae,Cho, Sung-Hyun,Kim, Chang-Yup,Seo, Juag-Don,Han, Man-Chung,Lee, Jeong-Ye 한국의료질향상학회 1997 한국의료질향상학회지 Vol.3 No.2
Background : It is a primary goal for hospital personnel to improve the quality of patient care. In Korea the concept of quality assurance has been spread over the last five years. Many hospitals have implemented quality assurance programs that fit their own philosophy and needs. As a result, they are supposed to have different experiences and attitudes toward quality assurance. To investigate their diversity will be helpful to have a direction to the future and to enhance the quality assurance activities in Korean hospitals. Objectives : The aim of this study is to obtain information about hospital personnel's attitude and opinion toward quality assurance in hospitals. Methods : A questionnaire was developed which consisted of five parts; the general characteristics of respondent, the concepts of quality assurance, need for quality assurance program, current status of quality improvement activities, and participation in programs. Using the registry of Korean hospitals, 102 hospitals with more than 400 beds were selected. Questionnaires were mailed to hospital staffs of each hospital; top managers, clinical department heads, registered nurses, medical recorders, and administrators. Results : Of 2038 questionnaires sent, 877 were returned, giving response rate of 44%. Most respondents(70%) regarded quality assurance as efforts to provide patient with care in highest quality and to improve effectiveness or resource utilization. Ninety-nine percent of respondents agreed to need for quality assurance in their hospitals. There were current quality improvement programs implemented in the department of 553 respondents(62%), and most of the(85%) have participated in at least one program. Lack of motivation was pointed out as a barrier to implement the programs. Conclusion : Although most respondents have known of the concept and need for quality assurance, this study suggests that education and motivation of hospital personnel be needed to activate the quality assurance programs in hospitals.
이열,박재형,연경모,한만청,Lee, Yul,Park, Jae-Hyung,Yeon, Kyung-Mo,Han, Man-Chung 대한영상의학회 1984 대한영상의학회지 Vol.20 No.1
We obtained the following results by reviewing the radiographic findings of 15 cases of Sinus Valsava rupture who were diagnosed surgically at Seoul National University Hospital sined 1979. 1. Among distribution was from 15 years to 40 years with the mean age of 24 years. Among the 15 cases, 9 cases were male and 7 were female. 2. Ruptured sinus is right coronary sinus projecting to right ventricle in all 15 cases. Combined diseases are ventricular septal defect in 12 cases, Aortic Calcular heart disease in 4 cases, and narrowing of right ventricular outflow tract in 2 cases, and aneurysmal dilatation of right pulmonary artery in 1 case. 3. Chest X-ray findings were that of left to right shunt, i.e cardiomegaly, increased pulmonary vascularity but were normal in 3 cases. 4. Aortography showed sequential leakage of dye from right coronary sinus to right ventricle and finally to pulmonary artery in 9 cases, and in 9 cases of them the leakage is directly to right ventricular outflow tract without filling of sinus portion of them leakage is directly to right venricular outflow tract without filling of sinus portion of the ventricle., i.e.type 1. 5. The leakage was well shown in left ventricular diastolic phases and not shown in systolic phase. 6. Ventricular septal defects were not detected definitely in spite of taking left ventriculography. 7. Cineangiography is essential for detecting accurate site, degree and direction of sinus valsalva rupture and other associated cardiac abnormality.