• Journal of Acupuncture Research
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• 제26권6호
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• pp.77-83
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• 2009

Objectives : The aim of this study was to evaluate the usefulness of ultrasonography of knee osteoarthritis. Methods : 124 osteoarthritis patients classified by the American College of Rheumatology (ACR) clinical criteria were included in the study. Simple X-ray and ultrasonography examination (effusion, osteophyte, articular cartilage, Backer's cyst) of knee in pain were performed. Also VAS, KWOMAC score were checked. Results : X-ray showed abnormal findings in 112 patients, but ultrasonography showed abnormal findings in all 124 patients. 12 Patients with unremarkable knee X-ray showed effusion and osteophyte in the ultrasonography. Effusion was discovered only in 18 cases of X-ray and 62 cases of ultrasonography. Group with effusion showed higher VAS mean figure but couldn't retrieve significant difference. KWOMAC showed no significant difference. Conclusions : Osteoarthritis patients with no abnormality in X-ray diagnosed abnormal findings through sonograph, which manifest that sonograph can be utilized for differential diagnosis especially sensitive on the problem of effusion.

• 한국방사선학회논문지
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• 제14권3호
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• pp.261-270
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• 2020

진단 방사선 검사에서 임산부와 태아에 대한 선량 평가는 현실적으로 어려우며, 관련된 연구 자료 또한 부족한 실정이다. 이에 본 연구에서는 모의실험을 통해 복부 X선 검사 시 임산부에 대한 선량과 태아선량을 분석하고자 하였다. 본 연구에서는 ICRP 89에서 제시하는 자료를 토대로 기존의 임산부 팬텀을 재구성한 팬텀을 제작 하였으며, 이를 이용하여 임신 주 수에 따른 임산부의 장기선량 및 태아선량에 대한 평가와 기존 팬텀과 재구성된 팬텀의 선량 차이를 분석하였다. 그 결과 복부 X선 검사 시, 입사되는 선원방향에 가까운 장기일수록 높은 선량을 나타내는 경향을 보였다. 또한 후전방향 촬영 시, 전후방향 촬영보다 태아 선량이 약 65%이상 감소하는 것을 확인할 수 있었다.

• 대한소아치과학회지
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• 제11권1호
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• pp.131-143
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• 1984

150 rats weighting about 150gm were devided into control group of 80 and experimental group of 70. Control group was subdivided into the irradiated vitamin D injection group and X-ray irradiated group. Experimental group was given 2.0mg ergocalciferol by four intramuscular injection prior to X-ray irradiation with single 800 rads and 1,500 rads respectively. Experimental animals from each group was sacrificed after 1, 3, 7, 14, and 28 days and their incisors were investigated by histopathological examination. The results were as follows; 1. In the irradiated groups, it showed dentin hypoplasia and formation of dentinoid substance caused by degeneration of odontoblast at the early stage. Especially, 1,500 rads group which was severely effected showed formation of osteoid dentin at the apical portion and severe injuries of dental papilla at the first week. 2. In the vitamin D2 administration group, it showed thinned dentin layer at the early stage but, taking time, predentin and dentin layer was thickened. At the fourth week, dentin was chiefly composed of interglobular dentin, especially in the lingual portion. 3. Using in combination of overdose vitamin D2 administration and X-ray irradiation, it effected severely odontoblast, undifferentiated mesenchymal cells around tooth germ and pulp tissue. At the early stage, dentin layer was thinned but, taking time, it was thickened and composed of interglobular dentin caused by calcification of predentin layer. 4. In 800 rads irradiation after the overdose vitamin D2 administration, it showed formation of osteoid dentin in the lingual portion at the first week. In the 1,500 rads irradiation after the overdose vitamin D2 administration, it showed formation of osteoid dentin and degeneration of ameloblast in both buccal and lingual portion at the first week, and enamel hypoplasia caused by edema and loss of polarity of ameloblasts at the second week. 5. By the entire experiment, the overdose vitamin D2 administration and X-ray irradiation effected severely odontoblasts, undifferentiated mesenchymal cells of dental papilla, and primitive cells of tooth germ among the dental tissue. Especially using combination of overdose vitamin D2 administration and X-ray irradiation also effected ameloblasts, resulting in enamel hypoplasia.

• 디지털융복합연구
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• 제10권4호
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• pp.287-295
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• 2012

본 연구는 시뮬레이션 기법을 이용하여 검진센터의 환자 흐름을 효과적으로 관리할 수 있는 방안을 마련하고자 수행되었다. 이를 위해 실제 병원의 검진자료를 활용하여 15개의 검진환자군을 분류하고, 최대 검사시간, 최소 검사시간, X-ray 추가도입에 근거한 3개의 시나리오를 개발하였으며, 시뮬레이션 프로그램은 Flexsim HC 2.7을 이용하였다. 분석결과 최대 검사 소요시간에 근거한 제 1시나리오에서 평균 검사 소요시간과 최대 검사 소요시간의 차이가 가장 크게 나타났으며, 시간대별 환자 수의 증가에 따른 평균 검사 소요시간이 가장 큰 폭으로 증가하였다. X-ray 장비 추가에 따른 평균 검사 소요시간의 차이는 미미한 것으로 나타나 도입의 필요성은 없는 것으로 분석되었다. 시뮬레이션 기법을 이용한 분석을 통하여 환자대기시간 관리, 장비의 효율적인 도입을 위한 의사결정 지원이 가능함을 확인할 수 있었으며, 구체화된 시나리오를 통해 가장 적정한 검사흐름과 시간대별 환자 수를 파악한다면 병원 경영의 효율화에 크게 이바지할 수 있을 것이다.

• 대한방사선기술학회지:방사선기술과학
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• 제7권1호
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• pp.3-11
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• 1984

The major findings of this investigation on radiographic works in 125 medical institutions around Seoul and Kyung-Ki area, from March 1983 to February 1984, are summarized as follows. 1. The number of references provided on radiographic techniques were 3 to 5 in general hospitals (52.1%), in hospitals (58.5%), and clinics (44.5%), and only the 10.4% of general hospitals had 11 or more. 2. The relatively high percentages of 75.0% of general hospitals and 68.3% of hospitals have established the standardized radiographic methods for regions examined, but most clinics (61.1%) have not. 3. As a log system for the radiographic request, the method of "routine study, or all the x-ray examinations are marked as 0 on a printed form" was most commonly used by general hospitals (62.5%) and hospitals (51.2%), and "the doctors employ their own methods" in most clinics (44.6%). 4. In the 85.4% of general hospitals, the 68.3% of hospitals and the 38.9% of clinics, the data such as diagnosis, clinic history, purpose of x-ray examination were recorded on a radiographic request at all times, or at least in part. 5. On a scale of hardness and easiness of order of doctors, the greatest response was "fairly easy to understand", and the 37.5% of general hospitals responded as "sometimes hard". 6. In determining the standards for radiographic factors, the general hospitals (62.5%) and hospitals (65.9%) adapted mostly "a departmental check list", and the clinics (61.1%) used mainly "a personal decision". 7. In using the immobilizing devices, angligner, and radiographic accessories, the Percentages were high in general hospitals and hospitals on the one hand, and were low in clinics on the other. 8. A consideration with regard to the devices for an improvement of examination of the same patients was totally ignored by the 50.0% of clinics, the 26.8% of hospitals and the 20.8% of general hospitals. 9. The causes of re-examination were due largely to patients (33.6%), and followed proportionately by incorrect exposure (22.8%), errors in positioning (22.0%), film processing faults (9.2%), conditions of x-ray equipments (8.8%), and quality of x-ray films (3.6%). 10. The conference on radiography was conducted regularly or irregularly by the 87.5% of general hospitals, the 56.1% of hospitals, and the 27.7% of clinics, and the meeting was proceeded only by radiologic technologists.

• 천문학회보
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• 제32권1호
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• pp.35.2-35.2
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• 2007

• 대한치과의사협회지
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• 제12권8호
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• pp.567-571
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• 1974

The author have had a case of Anodontia Partialis in 15 year old, Korean female. 1. The disturbance was shown on the mandible development and mastication. 2. No general disturbances were found. 3. The teeth were normally shaped, no torsiversion had taken place, and the teeth were lining up normally. 4. X-Ray examination revealed that no teeth were unerupted.

• 한국의학물리학회:학술대회논문집
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• 한국의학물리학회 1999년도 Japanese Journal of Medical Physics
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• pp.275-277
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• 1999

• 한국의학물리학회:학술대회논문집
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• 한국의학물리학회 1999년도 Japanese Journal of Medical Physics
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• pp.289-291
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• 1999

• Journal of Chest Surgery
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• 제22권2호
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• pp.321-324
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• 1989

The Swyer-James syndrome is rare abnormality that may be encountered on routine chest X * ray examination and frequently presents a diagnostic problem. Recently, we experienced a case of Swyer-James syndrome which was accompanied with ipsilateral uncontrolled pneumothorax. We performed exploratory thoracotomy because of failure of re-expansion of the lung. Right pneumonectomy was performed and postoperative course was uneventful.