종합병원 방사선사의 근무환경에 따른 지역별 스트레스 수준 분석

정홍량,손부순 한국환경과학회 2005 한국환경과학회지 Vol.14 No.4

A survey was conducted to 890 radiological technologists working at 44 general hospitals of 16 cities and provinces across the county to determine their stress level according to regions divided into the capital city, metropolitan areas and small- and medium-sized cities. For this purpose, such factors as their working environment, role playing, job conflict and job burden were compared and analyzed according to the regions. The findings may be summed up as follows: 1. In terms of working environment, radiological technologists in the capital city were found to have the least stress(23.46), followed by those in metropolitan areas(24.53) and small- and medium-sized cities(24.85). There was a significant difference according to the regions as for the item 'worry about influence of radioactive contamination(genetic, decisive and plausible)(P<0.001 ). 2. As for role playing, radiological technologists in small-and medium-sized cities appeared to receive the highest stress(18.25) followed by metropolitan areas(17.71) and the capital city(16.69). There was a statistically significant difference(p<0.001) according to the regions 3. Regarding job conflict, those who work in small- and medium-sized cities turned out to get the highest stress(15.66) compared to those in metropolitan areas(15.35) and the capital city(14.44). In terms of job autonomy, there was no significant result from the survey in spite of the difference between metropolitan areas(14.87). small- and medium-sized cities(14.79) and the capital city(14.66). 4. Little difference was detected according to the regions as far as the job burden(excessive or too little) was concerned. But their was a significant regional difference in terms of patient-related factors with the capital city(11.50), small- and medium-sized cities(10.75), and metropolitan areas(10.63)(p<0.001).

방사선사의 건강행위 실천과 육체적$\cdot$사회 심리적 상태와의 관련성 연구

정홍량,손부순,Jung Hong-Ryang,Son Bu-Soon 대한환경위생공학회 2004 대한환경위생공학회지 Vol.19 No.4

This study is aimed at examining the relationship between health behaviors practices and physical and psychological stresses of radiological technologists who are working at general hospitals across the country. For this purpose, a survey was conducted to 890 subjects by means of questionnaires from the middle of July to the end of August 2003, which resulted in the following outcomes: 1. From the technical and statistical analysis into the physical and psychological states, the item 'I feel miserable and dejected' scored the highest points of (3.91), implying that most subjects got heavily stressed, while the item 'Life is worth living' recorded (2.59), representing that only a few of them got less stressed. 2. With regard to an analysis of variance depending on their regular exercise, a significant difference appeared in 7 items(Pl, P2, P5, P6, P12, P17, and Pl8)(P<0.05). 3. Out of analysis into such variance as smoking, significant results were found in the items 'I become uncomfortable or disturbed at night' and 'I can solve my own problems'(P<0.05), while no significant difference was confirmed in other items regardless smoking. 4. From the T-test conducted to the independent sample depending on the drive under the influence, a significant difference was shown only in the item 'I feel very exhausted, even eating is a labo'( P<0.05). 5. The T-test with the independent sample of drinking coffee, the item 'I am satisfied with the method and the procedure of things I do' turned out to be significant( P<0.05) while no particular difference was confirmed in other items. In conclusion, it was revealed from the study that the physical and psychological states and health-related practices of radiological technologists seemed to be more affected by regular exercise than by smoking or drinking wine or coffee, a result confirming that the health-related acts are closely associated with the socio-psychological stresses. It is, therefore, strongly suggested that the practice of health-related acts to properly control stress will contribute to promoting health and pre venting disease of radiological technologists.

Trellis-Coded Modulation: Its Fundamentals and Applications

정홍량 에스케이텔레콤 (주) 1992 Telecommunications Review Vol.2 No.4

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[원저] 결직장암의 초음파검사 소견 및 유용성(증례 중심으로)

정홍량,김명수,심현선 대한방사선과학회(구 대한방사선기술학회) 2003 방사선기술과학 Vol.26 No.2

비특이적인 위장관 징후나 증상이 있는 환자를 우선적으로 초음파검사를 시행 해보면 결직장에 국한성 종기나 분절성 벽비후 등을 묘출해 낼 수 있다. 저자들은 다양한 증례를 통하여 대장암의 초음파검사상 특징적인 소견과 유용성이 있는지를 살펴보았다. 대장조영촬영술을 실시하기 전 복부 초음파검사로 대장암 소견을 보여 수술로 확진된 11명과 타 병원에서 대장암으로 진단 받고 치료를 받고자 내원한 환자 40명을 중심으로 총 51명의 초음파검사 결과를 분석하였다. 대장암 발생부위는 결장 및 직장에서 27예(53%)로 가장 많았고, 40~50대(60%)에서 암 발생율이 높았으며, 남녀 비율은 비슷했다. 초음파검사의 비교적 특징적인 소견은 부분적인 대장벽 비후 42예, 종괴형태 9예로 나타났다. 복부동통, 종괴, 배변습관의 변화 등 비특이적인 증상이 있는 환자에서 초음파검사로 대장암의 가능성이 있는 불규칙한 종괴나 분절성 벽비후를 쉽게 찾아 낼 수 있었다. 초음파검사는 고통이 없고 비침습적인 검사로서 내부장기의 검사를 하는데 유용하며, 복부검사 시 위장관을 포함하여 검사한다면 위장관 질환 등을 보다 조기에 발견할 수 있을 것으로 기대된다.

방사선사의 직무 스트레스 측정도구 개발을 위한 요인별 신뢰도 분석

정홍량,손부순,임청환,Jung, Hong-Ryang,Son, Bu-Soon,Lim, Cheong-Hwan 한국환경보건학회 2006 한국환경보건학회지 Vol.32 No.2

The present study is designed to analyze reliability and validity of the instruments used to measure job stress of radiological technologists mainly by means of the questionnaires from 'Korean edition of NIOSH check list'. The subjects of this study are 890 radiological technologists active at 44 general hospitals in 16 provinces and cities across the country. The item-total reliability revealed that 10 factors in 6 are the major causes of stress in job life of radiological technologists. The measuring instrument proved to be valid with reliability coefficient of internal consistency by factors being more than 0.7. The factors found to be applicable herewith include limit and authority of job (0.73), cohesion within departments (0.86), resources control (0.81), mental requirements (0.85), job load (0.82), and job stability (0.72). When job autonomy item of causes are modified for proper use to radiological technologists, the measuring instruments are expected to show high reliability. It seems, however, necessary to develop a measuring instrument to analyze and use the validity of related measuring instruments since the reliability here was rated low, with statistical coefficients lower than 0.7 in such factors as job management (0.57), conflicts within departments (-1.13), sense of responsibility for patients (0.66) and usage of education (0.26). As this study was intended to examine reliability and validity of the concepts related to measurement of job stress on the part of radiological technologists, it nay not be proper to apply the results of this study to general use, but is advised to utilize them as basis for developing instruments to verify reliability and validity by comparing with and analyzing other measuring instruments.

Phantom을 이용한 뇌 관류 CT검사에서 방사선 피폭선량에 관한 연구

정홍량,김기정,모은희 한국융합학회 2015 한국융합학회논문지 Vol.6 No.5

본 연구의 목적은 급성기 허혈성 뇌졸중 환자의 뇌 관류 CT검사 시 피폭선량을 알아보고자 하였다. 특히, 방사선 감수성이 높은 장기들의 장기선량(Organ dose)을 팬텀과 유리선량계를 이용하여 실측해보고, 제조사가 제 시한 기존 프로토콜(고정시간기법)과 새로 제시한 융합 프로토콜(조영제 추적기법)을 적용하여 선량을 측정하여 보 고, 피폭선량 저감화 방안을 마련하고자 하였다. 분석결과 기존 프로토콜과 비교하여 새로 제시한 융합 프로토콜에 서 최고 39.8 %, 최저 5.8 % 장기선량이 감소하였고, 검사 피폭선량인 CDTIvol과 DLP 값은 각각 25 % 감소하였으 며, 권고 선량 이하로 측정되었다. 위의 분석결과를 바탕으로 기존에 제시된 프로토콜을 점검해보고, 새로 제시한 융합 프로토콜을 적용하여 피폭선량을 감소시켜 국민보건향상에 이바지 해야 할 것이며, 다른 검사에서도 최적의 프로토콜을 찾기 위한 연구가 계속되어져야 할 것으로 사료된다. The purpose of this study, was Let's examine the exposure dose at the time of cerebral blood flow CT scan of acute ischemic stroke patients. In particular, long-term high doses of radiation sensitive organs and we Measured using phantom and a glass dosimeter. Apply the existing protocol suggested by the manufacturer (fixed time delay technique) and the proposed new convergence protocol (bolus tracking technique), reporting to measure the dose, dose reduction was to prepare the way. Results up to 39.8% as compared to the existing protocols in a new suggested convergence protocol, a minimum of 5.8% was long-term dose is reduced. Test dose of CDTIvol and DLP values decreased 25%, respectively, were measured at less than recommended dose. Try checking the protocol set out in the existing based on the analysis result of the above, by applying the proposed new convergence protocol by reducing the dose would have to contribute to improved public health. It is believed to be research continues to find the optimum protocol in the other tests.

방사선사의 개인요인과 반응에 따른 지역별 스트레스원 수준 분석

정홍량,손부순,임청환,Jung Hong-Ryang,Son Bu-Soon,Lim Cheong-Hwan 한국환경보건학회 2005 한국환경보건학회지 Vol.31 No.4

The present study was conducted to analyze the causes of stress on the part of Korean radiological technologists depending on their working environments. For this purpose, 890 questionnaires were distributed to and collected from radiological technologists who were working at 44 general hospitals in 16 cities and provinces of Korea during the period from the mid July to the end of August 2003. The collected data were compared between regions, divided into the capital, metropolitan, medium and small cities, whose results are as follows: 1. As factors affecting working conditions, drinking was found to exert more influence on radiological technologists in small- and medium-sized cities, while loyalty to immediate seniors and organizations was the one producing greater influence on them in metropolitan cities than other cities. Overall, position, job satisfaction and physical condition seemed to have a great effect on them (p<0.001).2. In terms of factors related to their roles, job satisfaction and physical condition played in general a greater role for radiological technologists (p<0.001). Immediate seniors and behavioral conducts were also found to have a lot influence on them (p<0.01).3. As for job conflicts, the kind of medical institutions seemed to exercise a great deal of impact on radiological technologists (p<0.05), while colleagues, immediate seniors, job satisfaction and physical conditions also produced a lot of influence on them as a whole (p<0.001).4. Regarding job autonomy, radiological technologists were found to have been less influenced by position in metropolitan cities and by immediate seniors in the capital city (p<0.01). As a whole, however, age and job satisfaction acted as decisive factors of influence on them (p<0.001). 5. Among factors related to job burden, gender played a bigger role for radiological technologists in metropolitan cities as the kind of medical institutions did in small- and medium-sized cities. Centrally, job satisfaction and behavioral conducts exercised a great impact on them (p<0.001).6. Job stability seemed to be more immensely linked to gender and physical conditions in metropolitan cities whereas position did more in the capital city. In general, how ever, job satisfaction produced a far-reaching (p<0.001).

방사선사의 직무 스트레스 측정도구 개발을 위한 요인별 신뢰도 분석

정홍량,손부순,임청환 한국환경보건학회 2005 한국환경보건학회 학술대회 자료집 Vol.2005 No.-

PVDF 초음파 변환기의 제작과 특성에 관한 연구

정홍량 대한방사선과학회(구 대한방사선기술학회) 2000 방사선기술과학 Vol.23 No.2

초파리 자연집단의 P 전이인자의 계통형과 염색체분포에 관한 연구

추종길,한영주,정홍량 中央大學校 遺傳工學硏究所 1992 遺傳工學硏究論集 Vol.5 No.1

1990년 경기도 과천시의 포도밭에서 채집한 다량의 초파리중에서 무작위로 40마리의 암컷을 택하여 iso-female line을 만들어 P-M system에 의한 불임실험을 행한 결과 대부분의 계통형이 Q와 M'으로 확인되었다. 40 iso-female line에 대하여 in situ hybridization방법에 의한 P element의 평균 copy수는 58.35개 였으며, X염색체가 12.83개로 가장 높은 수치로 나타내었고, 2nd R이 11.20개로 가장 낮았다. 각계통형간 P element의 평균 copy수는 Q, M'및 (m)P가 각각 58.43, 59.63 및 42.0이였으며, strong P type으로 알려진 π₂와 Harwich와 평균 copy수는 각각 51.0와 48.0개로 나타났다. 실험결과 P-M system의 각 계통형은 P element의 copy수에 의존하지 않는 것으로 확인되었다. Strain types resulted form gonadal dysgenesis sterility of 40 iso-female lines isolated from Gwacheon natural population of Drosophila melanogaster was identified almmost Q or M'. From the results of in situ hybridization using P probe DNA, the average number copies per cell was represented 58.35. The copy number of X chromosome was the highest(12. 83), and the smallest was 2nd R(11. 20). Specific region at the insertion site of P element on the chromosome was not recognized, and distributed randomly in the whole chromosome. The average number of copies in type Q, M' and(m)P were investigated 58. 43, 59. 63 and 42.00, respectively. The number of average copies of standard P strains, π₂ and Harwich 51.0 and 48. 0. No significant difference in the copy numbers and their distribution on the chromosome between each strain type of P-M system was found.