자기공명 소아전신검사에 있어서 STIR Sequence의 유용성 비교평가

조한영,서대건,차현정,강성호,이용문 대한자기공명기술학회 2004 대한자기공명기술학회지 Vol.14 No.-

Aeromonas hydrophila JH 유래의 혈전용해효소의 특성

조한영,주우홍,류충호,정영기 한국생명과학회 2001 한국생명과학회 학술발표회 Vol.33 No.-

국민학교 아동의 영양 조사 서울과 밀양 국민 학교 아동

조한영,황석귀,김현옥,송정석 ( Han Yung Cho,Suck Kuy Whang,Hyun Ock Kim,Chung Suk Song ) 생화학분자생물학회 1972 BMB Reports Vol.5 No.2

In autumn of 1967 and spring of 1968, determinations of carotene, vitamin A and vitamin C in blood and the excretion of thiamine, riboflavin and N-methylnicotinamide in urine were carried out on the 5th and 6th grade pupils of primary schools of Midong in Seoul and Milchoo and Taeryong in Milyang, Gyunsang Namdo Province, and the following conclusion was obtained. 1. The carotene level in blood of children of Milchoo and Taeryong was excellently higher than that in blood of children of Midong in autumn. This is probably due to higher intake of persimmon of rural children than that of Seoul children and the carotene blood level in spring was almost same between the children of Seoul and the rural area. 2. The vitamin C level was high in blood of both children of Seoul and Milyang, especially high in that of rural children but in spring the vitamin level was severely reduced in blood of Seoul children. This is probably due to less intake of vegetables during winter. 3. The amount of urinary excretion of thiamine, riboflavin and N-methylnicotinamide was slightly larger in the rural children than in those of Seoul, and it was larger in spring than in autumn.

자화율 보상물질을 이용한 경추 지방소거 영상의 자화율 변화에 관한 연구

조한영,이호범,최관우,양선욱,서대건 대한자기공명기술학회 2018 대한자기공명기술학회 학술대회 Vol.2018 No.04

목 적:본 연구에서는 인체 조직밀도와 유사한 실리콘을 이용하여 인체구조상 공기와 맞닿은 굴곡진 경추부위에 적용하여 자화율 인공물을 줄이고자 하였다. 대상 및 방법:인체부위 중 굴곡이 많고 구조가 복잡하여 공기와 접촉하는 면적이 넓은 경추를 대상으로 10명(평 균연령 53.3세)을 대상으로 하였다. 실험방법은 1.5T MRI(Avanto, Siemens medical system), 16 channel head-neck coil로 화학적 이동 선택 기법인 SPIR(Spectral Presaturation with Inversion Recovery)지방소거영상을 실리콘 적용 전과 후에 동일한 조건으로 획득하였다. 정량적 분석방법은 경추 부위 중 vertebra body 와 subcutaneous fat의 신호강도(Signal intensity)와 대조도 잡음비 (Contrast to ratio)를 측정한 후 비교하였으며, 정성적 분석방법은 영상의학과 전문의 3명이 영상의 지 방소거 정도에 따라서 좋음=3, 양호=2, 나쁨=1로 평가하였다. 통계적 방법은 대응표본 T 검정을 이용하 여 통계적으로 유의한 차이가 있는지 분석하였다. 결 과:기존에 실리콘 적용 전에는 vertebra body와 subcutaneous fat의 신호강도는 386.15±65.31, 681.57±103.28로 적용 후 177.83±37.62, 332.72±75.29로 적용 전보다 상대적으로 36.13% 낮았 으며, 대조도 잡음비는 19.56±4.13, 14.82±3.64로 적용 후 35.88±9.62, 33.28±8.17로 적용 전 보다 적용 후에 높게 측정되었다, 정성적 평가는 적용 전 1.30±0.33 적용 후 3.00±0.00으로 측정되었 다. 두 기법은 모두 통계적으로 유의한 차이가 있었다.(p<0.05) 위와 같은 분석결과는 지방소거가 효과적 으로 제거가 되면 주변 조직보다 신호가 더 낮게 되므로, 신호강도는 낮게 대조도 잡음비는 높게 나타났 다. 이로 인하여 실리콘 적용 후에 지방소거가 높은 효과가 있음을 알 수 있다. 결 론:본 연구는 체적소에 영향을 주지 않으면서 근본적인 문제인 공기와 인체의 자화율 차이를 보상하는 방법 이다. 또한 추가 소프트웨어나 검사시간의 증가 등의 복잡한 과정 없이 적용할 수 있는 근본적인 개선방 안이다.

Detection of a Unique Fibrinolytic Enzyme in Aeromonas sp. JH1

조한영,Min Jeong Seo,Jeong Uck Park,Byoung Won Kang,김기영,주우홍,이영춘,조영수,정영기 한국미생물학회 2011 The journal of microbiology Vol.49 No.6

A fibrinolytic enzyme was found in a Gram-negative bacterium, Aeromonas sp. JH1. SDS-PAGE and fibrinzymography showed that it was a 36 kDa, monomeric protein. Of note, the enzyme was highly specific for fibrinogen molecules and the hydrolysis rate of fibrinogen subunits was highest for α, β, and γ chains in that order. The first 15 amino acids of N-terminal sequence were X-D-A-T-G-P-G-G-N-V-X-T-G-K-Y, which was distinguishable from other fibrinolytic enzymes. The optimum pH and temperature of the enzyme were approximately 8.0 and 40°C, respectively. Therefore, these results provide a fibrinolytic enzyme with potent thrombolytic activity from the Aeromonas genus.

국민학교 아동의 영양 조사. - 서울과 밀양 국민 학교 아동

조한영,황석귀,김현옥,송정석,Cho, Han-Yung,Whang, Suck-Kuy,Kim, Hyun-Ock,Song, Chung-Suk 생화학분자생물학회 1972 한국생화학회지 Vol.5 No.2

서울 미동국민학교와 밀양 밀주 및 태룡국민학교 5, 6학년 아동들에게 1967년 가을과 1968년 봄에 혈액내 carotene, 비타민 A 및 비타인 C 와 뇨중 thiamine, riboflavin 과 N-methylnicotinamide 배설량을 측정하여 다음과 같은 결론을 얻었다. 1) 밀주와 태룡국민학교 아동들의 혈액내 carotene 농도는 가을에 미동국민학교 아동들보다 윌등히 높았다. 이는 아마 가을에 지방아동들이 감을 많이 먹기 때문인것 같다. 봄에는 지방과 서울이 다같이 비슷함 농도를 보여 주었다. 2) 비타민 C 혈액내 농도는 가을에 있어서 서울과 지방아동들에게서 다 높았고 특히 지방 아동들에게서 높았으나 봄에 와서는 서울 아동들은 월등히 떨어졌었다. 이는 서울 아동들이 겨울에 채소를 적게 먹기 때문인것 같다. 3) Thiamine, ribof1avin, N-methylnicotinamide 뇨중 배설은 지방 아동등에서 약간 높았고 가을보다 봄에 뇨중 배설량은 서울과 지방 아동들이 다 같이 높았다. In autumn of 1967 and spring of 1968, determinations of carotene, vitamin A and vitamin C in blood and the excretion of thiamine, riboflavin and N-methylnicotinamide in urine were carried out on the 5th and 6th grade pupils of primary schools of Midong in Seoul and Milchoo and Taeryong in Milyang, Gyunsang Namdo Province, and the following conclusion was obtained. 1. The carotene level in blood of children of Milchoo and Taeryong was excellently higher than that in blood of children of Midong in autumn. This is probably due to higher intake of persimmon of rural children than that of Seoul children and the carotene blood level in spring was almost same between the children of Seoul and the rural area. 2. The vitamin C level was high in blood of both children of Seoul and Milyang, especially high in that of rural children but in spring the vitamin level was severely reduced in blood of Seoul children. This is probably due to less intake of vegetables during winter. 3. The amount of urinary excretion of thiamine, riboflavin and N-methylnicotinamide was slightly larger in the rural children than in those of Seoul, and it was larger in spring than in autumn.

투시조영 검사에서의 면적선량의 측정 및 비교 : 식도조영, 상복부위장관조영, 연하조영 중심으로

노현아(Hyun A Noh),조한영(Han Yeong Cho),문규오(Kyoo O Moon),손순룡(Soon Lyong Son) 대한영상의학기술학회 2009 대한영상의학기술학회 논문지 Vol.2009 No.-

Purpose : This thesis is, esophagography, UGI series, swallowing study using DAP meter measure in checking and fluoroscopy time, body weight, to learn about the correlation with image number, compared with earlier studies and seek the ways of reducing the radiation dose. Materials and Methods : October- December 2008 was an experiment of 212 patients. Philips has used its equipment, DAP meter adherent in front of X-ray tube calibration, and using the ion-chamber. By checking the patients weight, fluoroscopy time, image number and DAP values were measured. Results : According to the increase in esophagography fluoroscopy time as an increase in the DAP had paid attention to statistics (P<0.05). In UGI series, according to the increase in weight, fluoroscopy time, image number as an increase in the DAP had paid attention to statistics (P<0.05). In swallowing study, fluoroscopy time and DAP had paid attention to statistics (P<0.05). In all test, depending on the increase in fluoroscopy time also DAP had increased gradually. In case of our hospital, the average DAP and fluoroscopy time with advanced studies to compare at least 2.4 times, respectively, 6.5 times as high was investigating. In UGI series, fluoroscopy time at least 1.7 times, DAP 2.6 times, image number also was 2.4 time higher. Conclusion : To reduce patient dose for fluoroscopy examination, in here and now, they should evaluate patient dose and accurately analyze related factors of exposure dose. It comes to the conclusion that patient dose is reduced in good image quality by perfonning the examinations for reference of advanced studies or recommend dose recommended dose in international organizations.

C57BL/6N 생쥐에서 斑蝥추출물과 분획물을 이용한 發毛효과에 대한 실험적 연구

조한영(Han Young Jo),김태헌(Tae Heon Kim),김호(Ho Kim),정한솔(Han Sol Jeong),이창현(Chang Hyun Lee),이광규(Kwang Gyu Lee) 한의병리학회 2008 동의생리병리학회지 Vol.22 No.2

Source Image Distance 변화에 따른 환자 및 검사자의 피폭선량 비교

조한영(Han Yeong Cho),황민호(Min Ho Hwang),박은성(Eun Seong Park),노성순(Seung Soon Ro),손순룡(Soon Lyong Son),하동윤(Dong Yoon Ha) 대한영상의학기술학회 2010 대한영상의학기술학회 논문지 Vol.2010 No.-

Purpose : We suggest the basic data that we set up the standard SID without changing image quality, by comparing the exposure dose of patients and operators with SID, in fluoroscopy. Materials and Methods : Shimavision 3200HG (Shimaclzu, over tube system) was used for fluoroscopy. Unfors Xi meter(dosimetry), CDRH phantom and Rando phantom were used to measure image as human equivalence. We assess average patient exposure dose and image contrast acquired 10 spots and 10sec of fluoroscopies 10times by changing SID(1000mm, 1100mm, 1200mm, 1300mm). In addition, We measured operator’s dose at point(chest1200mm, thyroid1400mm, lens1600mm) from machine table in same method. Results : The measured results are as follows 1. The longer the SID, the less exposure dose in fluoroscopy and spot. - Fluoroscopy : 1000mm 319.3μGy/s, 1100mm 276.7μGy/s, 1200mm 235.3μGy/s, 1300 203.6μGy/s - Spot : 1000mm 36.9mGy/s, 1100mm 29.3mGy/s, 1200mm 25.5mGy/s, 1300 21.7mGy/s 2. It was the least operator’s exposure dose at chest(1300mm, 1.15μGy/s), otherwise, it was the much at 1000mm (1.38μGy/s). It was the least at thyroid and lens, otherwise, it was the much at 1000mm. 3. AS the result of image quality assessment by using CDRH phantom, It was evaluated in appropriately at SID 1300mm. Conclusion : We suggest that SID was setted up 1200mm. Because it is effectively distance that it is not only a falling-off in image quality but less exposure dose of patients and operators.

방사선투시장비를 사용한 검사에 참여하는 소화기내과 소속 간호사들의 의료용 방사선에 대한 의식도 조사

황민호(Min Ho Hwang),조한영(Han Yeong Cho),문규오(Kyoo O Moon),엄준용(Joon Yong Uhm),손순룡(Soon Lyong Son),박철수(Cheol Soo Park) 대한영상의학기술학회 2010 대한영상의학기술학회 논문지 Vol.2010 No.-

Purpose : To purpose of this study is to research on consciousness of gastro-intestinal nurses who work in radiation area for ERCP, PTCS, Enteroscopy, Colon stent examination. Materials and methods : This is intended for full-time twenty nurse(male 2, female 18). The research were used 5-point scale survey about radiation basic knowledge, behavior during examination, exposure management and attended a radiation education. We analyzed relationship between period of examination, age, exposure time and radiation consciousness. We also analyzed relationship between radiation basic knowledge, behavior, management and radiation consciousness using SPSS ver 12. Results : Total average consciousness was 3.92 point, total raditaion knowledge level was 3.59 point, total behavior level was 3.79 point and total radiation safety management level was 4.66 point. Female nurse has high level radiation consciousnes rather than male nurse. Radiation consciousness has nothing to relationship with period of examination, age of nurse and exposure time during examination. Everybody did not attend a radiation education. Twelve people do not knows about a radiation education. Six people could not attend due to overtime work Two of them did not attend due to disinclination. Conclusion : Management about radiation exposure of gastro-intestinal nurses is very well but their radiation basic knowledge is lower compare with average radiation consciousness. The reason for this is lack of education of medical radiation. Therefore, we should make effective and realistic education project about medical radiation for gastro-intestinal nurses.