대한전산화단층기술학회지에 게재된 논문의 연구동향

전재두(Jae Doo Jeon),노지숙(Ji Sook Noh) 대한CT영상기술학회 2009 대한CT영상기술학회지 Vol.11 No.1

Purpose Korean society of computed tomographic technology foundation 10 anniversaries arrived and analyzing paper that is collected to journal that is drawn until 1999~ 2008 year, did market number and research institution distribution change comparative analysis. Analyze to paper’s area of study and research subject, wish to offer to pabulum so that CT technology connection research in presence at a clinical developed forward more may can be propeled. Materials and methods Divide in non full-text and full-text treatise and diagnosed 306 paper that is collected to journal to grasp CT technology journal’s research tendency. Investigated CT technology journal memebership’s treatise 178 parties that is come to full text except 128 which outside lecture contents and abstract are collected. Grades of estimation of collected treatise that do not first because do by 5 points measure that do well 1 point, first 5 Jeomeurohas each year treatise average mark hydrate. Results Among whole paper 306, member’s paper was 282 and this was 92.2% of whole paper. Also, non-membership’s paper was 24. There were much differences in publication paper number to area, and 2000 year scientific papers were lowest point to 3.4 points in estimation of flue each book of full text paper and scientific paper of 2008 year was best point to 4.8 points. Evaluation average score of whole scientific paper was 4.35 points. Specially, because 64 multi-channel MDCT’s of cardiovascular region are distributed all over the country, research is lively. Also, 13 papers was recorded in radiation dose management research and 12 papers was recorded in contrast media connection research. Conclusion Need to supplement some to resuscitate as journal of Korea society of computed tomography technology that can be recognized in Korea research foundation. Should be made out according to form to require in Korea society of computed tomography technology. There is necessity that is activated and paper number control as is light of paper announcement in each area. Become not being Investigations of authoritative science TFT organization, consolidation of treatise quality, edit committee function consolidation, diversification of treatise subject, new medical technology diffusion, clinical report etc. contribute people health and diagnosis clashed to social ethics. It is thought subject that must solve first that raise Korea society of computed tomography technology’s upgrade as Journal that exclude non-memebership’s paper is recognized by Korea society of computed tomography technology’s full text journal, and is consisted of membership’s paper.

하지 심부정맥혈전증에서 양측 하지 MDCT Direct Venography의 유용성

전재두(Jae Doo Jeon),노지숙(Ji Sook Ro),김동훈(Dong Hun Kim) 대한CT영상기술학회 2006 대한CT영상기술학회지 Vol.8 No.1

Purpose This study is to describe the method of CT examination for deep veins of both lower extremities simultaneously and to evaluate the usefulness of MDCT direct venography. Materials and Methods From september 2003 to october 2005, 32 patients were retrospectively identified at our hospital, as having deep vein thrombosis in lower extremities by MDCT direct venography with bypass cannula made by authors. Results We could scan both extremities simultaneously and the long segment of lower extremities with MDCT direct venography with bypass cannula at one time. Axial images, maximum intensity projection images and volume rendering images could be reconstructed easily, and venographies of extremities, pevis, and inferior vena cava be obtained. Conclusion MDCT direct venography with bypass cannula have the usefulness for examing the deep veins of both lower extremities simultaneously and the merits for comparing and accurate diagnosis of deep vein thrombosis using volume rendering techniques and maximal intensity projection techniques.

IV route에 따른 Neck CTA 영상의 적정성에 관한 고찰

정명진(Myung Jin Jung),전재두(Jae Doo Jeon),정지훈(Ji Hoon Jung),박상록(Sang lok Park),전진만(Jin Man Jeon),노지숙(Ji Sook Noh) 대한CT영상기술학회 2012 대한CT영상기술학회지 Vol.14 No.2

목적 본 연구에서는 Ⅳ route에 따라 Neck CTA검사 시 Ⅳ route 확보에 대한 문제점의 해결과 높은 진단영상 획득을 위한 프로토콜을 제시하고자 한다. 대상 및 방법 2011년도 12월부터 2012년 2월까지 광주광역시 C 대학병원에 Neck CTA 검사를 위해 내원한 환자 중에서 영상판독결과 질환이 없는 환자를 대상으로 하였고, Ⅳ route를 상지혈관에 확보한 환자 23명과 하지혈관에 확보한 환자 30명을 연구대상으로 조사하였다. Curved MPR 영상에서 ICA부위에 HU값을 측정하였고, 측정한 HU값의 측정오류를 최소화하기 위하여 한 연구자가 근위부에서 원위부까지 각각 3회씩 측정하여, 이들 HU값의 평균과 표준편차를 구했다. 평가방법은 영상의학과 전문의 2명, 방사선사 3명에 의해 평가하였으며, 조영제에 의한 인공물이 혈관에 미치는 정도와 조영증강 정도에 따라 최고점수 5점을 부여하였고, 나머지는 차례로 1점 단위로 하위점수를 부여하여 평가하였다. 통계분석은 독립표본 t-test 검정을 시행하였고, p<0.05인 경우에 통계학적으로 유의한 것으로 보았다. 결과 상지에 혈관을 확보한 군의 HU 평균값은 463.36±94.77, 하지에 혈관을 확보한 군의 HU 평균값은 372.98±74.32로 나타났고, 영상 평가한 결과 상지에 혈관을 확보한 환자의 검사영상에서 4.14±0.81점, 하지에 혈관을 확보한 환자의 검사영상에서 4.18±0.65점으로 나타났다. HU값과 영상평가에 따른 독립표본 t-test 검정을 한 결과 통계적으로 유의하였다 (p<0.05). 결론 Neck CTA 검사 시 상지에 혈관을 확보 시에도 Dual injector를 이용한 조영제와 생리식염수를 투여하고 검사방향을 머리에서 발쪽으로 높은 피치로 검사함으로써, 견측 부위에서의 조영제로 인한 인공물 발생을 줄일 수 있어 진단적으로 양질의 영상을 얻을 수 있었다. I. Purpose This study aims to present a protocol to attain solutions to problems involving Ⅳ route in Neck CTA and acquire diagnostic images according to Ⅳ routes. II. Meterial and Methods For the purpose, this study analysed patients who came to C university hospital for Neck CTA from December 2011 to February 2012 and had no diseases as a result of image reading. The subjects were categorized in the following: 23 patients with Ⅳ route at their upper extremity and 30 ones with Ⅳ route at their lower extremity. HU values were measured at the ICA of the curved MPR images and to minimize errors in the HU values, this study measured them from the proximal to the distal three times for a subject to obtain means and standard deviations. Two radiologists and three radiological technologists participated in the evaluation, and a maximum of five points were given according to the degrees that contrast media affected blood vessels and the intensity of contrast enhancement, and sub-points were given to the rest. For a statistical analysis, a t-test was conducted and in case of p<0.05, it was suggested that it was significant. III. Result The mean HU values of the group with Ⅳ route at the upper extremity were 463.36±94.77 and those of the group with Ⅳ route at the lower extremity were 372.98±74.32. As a result of evaluating the images, the points of the former subjects were 4.14±0.81 and those of the latter subjects were 4.18±0.65. It was discovered that the results of the HU values and the t-test were statistically significant(p<0.05). IV. conclusions In the Neck CTA, to secure IV routes at the upper extremity, contrast media and saline were injected with a use of a dual injector and an examination was done from the head to the leg to decrease occurrence of artificial things due to contrast media and to attain good-quality images.

64 Slice MDCT와 심근관류 SPECT, 심초음파를 이용한 심실 기능 지표의 비교

정명진(Myung Jin Jung),전재두(Jae Doo Jeon),노지숙(Ji Sook Noh),김동훈(Dong Hun Kim) 대한CT영상기술학회 2009 대한CT영상기술학회지 Vol.11 No.1

Purpose Wish to search each equipment correlation great damage about ejection fraction, end diastolic volume, end systolic volume that express capacity and function of left ventricle that use multi detector computed tomography(MDCT). Recognized about end systolic phase and suitable section choice of end diastolic phase that is basic information of all-important EDV and ESV in functional analysis. Materials and methods From 560 patients who underwent cardiac MDCT in the Kwangju city C univesity hospital from january, 2008. to january, 2009, We enrolled 39 patients who underwent echocardiogarphy, myocardial perfusion SPECT during the same period for this study. Left ventricular end systolic volume(EDV), left ventricular end diastolic volume(EV) and ejection fraction(EF) were functional analyzed. Results Average volume(47.00±21.46ml, 41.80±13.81ml for 30% and 40% phase, 120.40±34.6ml, 132.40±29.13ml, 137.20±29.83ml for 70%, 80%, 90% phase), average EF(62.41%, 64.93%, 65.91% for 30%(ES), 70%~90% phase(ED), 5.27%, 68.12%, 69.12% for 40%(ES), 70%~90%(ED)) showed significant difference between each phase. Comparing correlation for each parameters between each groups. Average EF(r=0.88, p<0.00001 for MDCT & SPECT, r=0.83, p<0.00001 for MDCT & ECHO, r=0.81, p <0.00001 for SPECT & ECHO) showed high relevance. average EDV(r=0.88, p<0.00001 for MDCT & SPECT, r=0.79, p<0.00001 for MDCT & ECHO, r=0.86, p<0.00001 for SPECT & ECHO) showed high relevance. Average ESV(r=0.88, p<0.00001 for MDCT & SPECT, r=0.79, p<0.00001 for MDCT & ECHO, r=0.86, p<0.00001 for SPECT & ECHO) showed high relevance. Conclusion Qantiative assessment of left ventricular volume and function using 64 slice MDCT Showed high relevance compared with myocardial perfusion SPECT & echocardiogarphy. Hereafter, by technological development of MDCT, if coronary artery stenosis’ diagnosis and left ventricular function analysis consist abuzz, is expected to enforce test more simply because it is to patient.

MDCT의 다양한 알고리즘과 관상동맥내 삽입된 스텐트 내경측정의 영향

정명진(Myung Jin Jung),전재두(Jae Doo Jeon),노지숙(Ji Sook Noh),전진만(Jin Man Jeon),김동훈(Dong Hun Kim) 대한CT영상기술학회 2008 대한CT영상기술학회지 Vol.10 No.1

Purpose To analyze diameter of stem within phantom and coronary artery and to recognize various algorithm effects that make blooming artifact commonly. Materials and Methods Phantom model was manufactured as follows: stem located in center of thin plastic pipe was situated in glass bottle and mixed saline and contrast (10:1) was filled in bottle. Total 80 patients (man : woman = 53 : 27, mean age = 60.8 years old) who undergo percutaneous coronary intervention (stenting) were included in this study. Coronary CT angiography was performed with the use of a 16- slice MDCT scanner with a 0.42-s rotation time (Sensation 16, Siemens, Erlangen, Germany) and a 64-slice MDCT scanner with a 0.42-s rotation time (Brilliance 64, Philips Medical Systems, Best, The Netherlands) with retrospective ECG gating.A standard scanning protocols were applied. Six radiological technicians measured internal diameter of stem within phantom and coronary artery respectively. As much as possible, we exclude artifacts including blooming artifact. For evaluation of images, window width and window center were used as 900 ± 100 and 400 ± 100 each. Results In phantom model, average inside diameter measured by each algorithms appeared most greatly as 2.35 mm (B50f in S company) and 2.53 mm (XCB in P company) respectively. In patients, in stent resolution processed by XCC was scored as 7.67 (highest) and others (XCA, XCB, XCD) got similar scores. Conclusion B40f (S company, 16 slice MDCT) and XCC (P company, 64 slice MDCT) are appropriate algorithms for evaluating internal patency of stent within coronary artery.

외부의료영상의 PACS 등록 시 OCS상 FTP Module의 유용성

정명진,동경래,지연상,최정길,전재두,Jung, Myung-Jin,Dong, Kyung-Rae,Ji, Yeon-Sang,Choi, Jung-Gil,Jeon, Jae-Doo 대한디지털의료영상학회 2009 대한디지털의료영상학회논문지 Vol.11 No.1

This study was conducted to improve performance flow of PACS registration and output of external medical images by developing or adding File Transfer Protocol(FTP) Module on Order Communication System(OCS) and to upgrade efficiency of performance. The numbers of requests for examination of external medical images from January 2004 to December 2007 were investigated and the numbers of cases of examinations and losses were done respectively from January to June, 2007 as a period before the improvement and from July to December, 2007 as a period after it. Satisfaction of persons inputting external medical images of CD was asked directly before and after the improvement. When the numbers of requests for examination of external medical images from 2004 to 2007 2004 were investigated, they were 12,783, 16,774, 21,613 and 27,487 cases in 2004, 2005, 2005 and 2007 respectively. For the numbers of the requests from January to December, 2007 it was the lowest in February by recording 1846 and it was 2800 in October. While the number of loss of external medical images was averagely 3.6 before using FTP Module on OCS, it reduced to 0 and satisfaction increased to 98% after it. By utilizing FTP Module on OSC for PACS registration of external medical images, the images were delivered simultaneously with occurrence of order, PACS registration of many patients was conducted together and CDs were returned to patients immediately after sending images from outpatient clinics or wards to remove possibility of losing them. In addition, because the module was established on OCS and data were sent associated with order, problems related with order were decreased. By eliminating movement distance it was turned out to be very effective in terms of time and space.

Neck CTA 검사에서 환자의 신체적 특성과 HU값의 상관관계에 관한 연구

정지훈(Ji hun Jung),정명진(Myung jin Jung),전재두(Jae doo Jeon),노지숙(Ji sook Noh) 대한CT영상기술학회 2013 대한CT영상기술학회지 Vol.15 No.1

목적: Neck CTA검사에서 조영제 주입 후 내경동맥의 근위부와 원위부에 도달하는 조영제의 HU값을 조사하여, 환자의 성별, 연령, 신장, 체중, 체질량 지수, 심박동수, 혈압에 따른 HU값 변화와의 상관관계를 알아보고자 한다. 대상 및 방법: 2012년도 7월부터 2013년 1월까지 광주광역시 C 대학병원에 Neck CTA 검사를 위해 내원한 환자 중에서 영상판독결과 질환이 없는 환자 164명을 후향적으로 조사하였다. 조영제를 초당 5ml의 속도로 70ml를 먼저 주입 후 생리식염수를 초당 5.5ml의 속도로 50ml, 총120ml를 주입하였다. 설정해 놓은 역치값에 도달하면 자동적으로 검사를 시작하는 Auto Bolus Tracking 기법을 이용하였으며, cranio-caudal 방향으로, pitch를 높여서 검사를 진행하였다. Curved MPR 기법을 이용하여 내경동맥과 척추동맥을 영상화하여, 내경동맥의 근위부에서 원위부까지 각각 3회씩 HU값을 측정하였고, 환자들의 체중, 신장, BMI, 혈압, 심박동수의 인자들과 HU값의 평균비교를 위해 상관관계분석을 시행하였고, p<0.05인 경우에 통계학적으로 유의한 것으로 보았다. 결과: 내경동맥의 근위부(HU1)에서 측정된 HU값의 평균은 512.11±85.14, 내경동맥의 중앙부(HU2)에서 측정된 HU값의 평균은 553.99±98.75, 내경동맥의 원위부(HU3)에서 측정된 HU값의 평균은 483.73±82.05, 세 부위의 HU값 평균은 516.61±81.08이다. 환자의 인자와 HU값의 상관관계분석에 의하면 성별은 양의 상관관계를 가지는 것으로 나왔고(p<0.05), 체중과 신장, BMI, 수축기압은 음의 상관관계를 가지는 것으로 나왔다. 이완기압, 심박동수는 상관관계를 갖지 않는 것으로 나왔다 결론: 본 연구는 환자의 신체적 특성(성별, 나이, 혈압, 심박동수, 체중, 신장, BMI)에 따른 내경동맥에서의 HU값의 상관관계를 분석하였고, 환자의 신체적 특성 중 내경동맥에 조영된 정도의 차이가 발생하게 하는 인자로는 성별, 체중, 신장, BMI, 수축기압이 통계적으로 유의함을 알 수 있었다. 체중, 신장, BMI, 수축기압이 높은 환자들의 경우에는 조영제의 주입속도와 양을 높여주고, 여성인 경우에는 조영제 주입속도와 양을 줄여줌으로써 CTA의 최적의 영상을 제공할 수 있을 것으로 기대된다. 향후, Neck CTA 검사 시 상관관계에 놓여 있는 신체적 특성 인자들을 고려한 조영제 주입 프로토콜과 검사방법의 개발과 연구가 진행 되어져야 할 것으로 생각 한다. Purpose: Neck CTA test after the start of contrast injection of the internal carotid artery proximal and distal to the HU value of the contrast medium to reach the survey, the patient’s gender, age, height, weight, body mass index (BMI), heart rate, blood pressure, according to the correlation of the change in HU value andto evaluate Materials & Method: July 2012 to January 2013 University Hospital, Gwangju C Neck CTA examination for a patient who presented disease image interpretation results of 164 patients who were retrospectively reviewed. 50ml, 120ml, 70ml first injection of the contrast medium at a rate of 5ml per second after the normal saline at a rate of 5.5ml per second was injected. Start automatically checks have set the threshold value is reached Auto Bolus Tracking Technique, cranio-caudal direction by raising the pitch inspection was conducted. Curved MPR technique using each in the proximal portion of the internal carotid artery until the distal internal carotid and vertebral arteries, imaged by three times the value of HU were measured factors, the patients’ weight, height, BMI, blood pressure, heart rate, and HU values correlation analysis was performed for the average comparison, looked to be statistically significant if p <0.05. Result: Measured at the proximal portion of the internal carotid artery (HU1) average HU value of the average HU value of the central portion of the internal carotid artery (HU2) measured at 512.11 ± 85.14, 553.99 ± 98.75, measured HU values of the internal carotid artery in the distal (HU3)the average of the three parts of the average HU value 516.61 483.73 ± 82.05, ± 81.08. According to the analysis of the HU values of the correlation factors and patient’s gender, as having yielded a positive correlation (p <0.05), and negatively correlated with body weight and height, BMI, systolic to have emerged.Diastolic pressure, heart rate suggests that he does not have a correlation. Conclusion: The present study, according to the physical characteristics of the patient (gender, age, blood pressure, heart rate, weight, height, BMI) HU value of the correlation analysis of the internal carotid artery in the angiography of the internal carotid artery on the physical characteristics of the patient, and the degree ofdifference that occurs as a factor, sex, weight, height, BMI, systolic blood pressure was found to be statistically significant. Are expected to be able to provide optimal imaging by CTA if the patients’ weight, height, BMI, systolic blood pressure, high amount of contrast injection speed and improves the contrast injection rate and reduce the amount of women if Future, the contrast medium injection protocol and Neck CTA examination lies in the correlation between physical characteristics factors in considering the progress of research and development testing methods to be considered.

폐경기 여성에서 골다공증의 관련 요인 : 식이·기호 습관 운동 능력을 중심으로 Focused on Diet, Health-related Habit, Physical activity

전재두,박종,김기순,오재희,문영래 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.2

Objectives : Our study evaluated the effect of certain putative behavioural risk factors among menopausal women on bone mineral density(BMD) and the prevalence of osteoporosis. Materials and Methods : BMD was measured using DEXA(dual energy X-ray absorptiometry) instrument toward 411 menopausal women aged 40 to 74. The characteristics of the subjects including life styles like diet pattern, health-related habit, physical activity were compared between group with osteoporosis and group without osteoporosis. Results : The number of osteoporosis patients among study subjects were 217 persons(52.8%). It showed a tendency that the higher the age of subjects was, the lower BMD was, so aging was a related factor with osteoporosis. Some characteristics of life styles of the subjects like taking high calcium diet, frequency to take meat, coffee, alcohol or tobacco preference, degree of physical activity due to home labor and occupation, and the performance of health promotion activity were found out to be significant related factors with osteoporosis. Conclusion : Further study to find true risk factors of osteoporosis in Korean menopausal women and appropriate preventive measures against the disease must be made.

일부 중소병원 조직구성원의 갈등이 직무만족과 조직몰입에 미치는 영향

임경태,강명근,전재두,박계남,김기순 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.1

Objectives and Method : This study was conducted to identify the influences of conflict among hospital employees on job satisfaction and organizational commitment measured as the result variables of organizational conflict. The data for this study were collected from 305 employees who were employed as a physician, a nurse, an administrative personnel or other hcalthcare professional in 4 medium-sized general hopitals in 2 middle sized cities including Yeosu and Soonchcon. The survey instrument used in this study was a structured questionnaire developed from modifying those of some previous studies, for example, Minnesota Satisfaction Questionnaire for a measure of job satisfaction. Results : 1. The groups experienced relatively high degree of overall intra- organizational conflict were the female, the younger, the non-married or the divorced married, and the college-graduated. And according to the job-related variables, these groups were the lower-salaried employees with a lower job status, 3 or 5 years on their duties, especially the nurses. 2. The degree of conflict experienced by the hospital employees was highest in the intra-organizational conflict due to the factors such as a gap of goals, communication problems and were relatively lower in the conflict due to the factors such as a collective coherence, an interdependence, a leadership problem. And the degree of conflict due to the horizontal relationship with their colleagues was higher than that of vertical relationship with their bosses or subordinates. 3. Comparcd with the degree of conflict according to the general characteristics of our study subjects, the degree of job satisfaction and organizational commitment of them were reverse in that the male, the elderly, the married, the eradnated of praduate school, the physicians, and higher-salaried employees with a higher job status, 6 vears or more on their duties perceived the highest degree of the job satisfaction and the organizational commitment. As a result of correlation analysis, all values of correlation coefficients between the degree of intra-organizational conflict and the degree of the job satisfaction, the organizational commitment were negative. 4. As a result of a multiple regression analysis inputting the variables such as variable general characteristics and job-related variables as the putative confounders, the conflict scores due to the factors such as the communication problems, leadership problems, individual personality were the significant independent variables having negative influence on the overall, intrinsic, and extrinsic components of job satisfaction. 5. As a result of a multiple regression analysis inputting- the variables such as general characteristics and job-related variables as the putative confounders, the conflict scores due to the factors such as an interdependence, leadership problems, and an individual personality were the significant independent variables having negative influence on the score of organizational commitment. And as a result of a multiple regression analysis inputting scores of conflict factors, scores of conflict types, intrinsic and extrinsic components of job satisfaction, and above putative confounders altogether as independent variables, the significant independents having influence on the score of organizational commitment were conflict scores due to the interdependence (β=-0.379; p=0.026), the individual personality (β=-0.716: p=0.000), conflict score from vertical interpersonal relationships (β=-0.555; p=0.019), intrinsic (β=0.097; p=0.000) and extrinsic (β=0.076: p=0.049) components of job satisfaction. Conclusion : Our research had some limitations, which, for example, were an omitting some job related putative confounders such as a daily work loading measured by an individual. But the fact that all the regression models showed hig'h explanatory power suggested the bias due to this problem might be little. And we hope to be conducted more advanced researches with robust theoretical background and precise analytic tools, in this research area.