의료용 X-선 장치의 기준규격에 대한 최근 경향

신동용 제주한라대학 1999 論文集 Vol.23 No.-

The quality control for radiation generator must be performed because radiation has both faces of merit and demerit. If the quality control is not performed, it bring about life shortening of X-ray equipment and increase of exposure dose of patient. and so, the Korean Government has performed the quality control of diagnostic X-ray equipment by pre-inspection and post inspection. For quality control, standards are required. Recently, new standards in medical X-ray equipment were amended and previous standards were abolished. In this paper, we introduce, analyze these new standards and compare these with previous standards. The results are as follows: - Standards in diagnostic X-ray equipment, diagnostic X-ray generator and dental diagnostic X-ray generator were unified into standards in medical X-ray equipment. - The latest international standards (IEC601-1(1995)) were reflected. - Standards for electromagnetic wave damage were established. - Standards in inverter X-ray equipment were established. - Inspection standards of tube voltage, tube current, exposure time and mAs were amended on equal terms with those of IEC(International Electrotechnical Commission) and JIS(Japan Industrial Standards) For keeping up the best equipment performance and reducing exposure dose of patient, It seems necessary that medical center performs voluntarily periodical inspection through selecting needful test items of new standards in medical X-ray equipment.

사전검사후 진단용X선장치의 품질관리

신동용 제주한라대학 1996 論文集 Vol.20 No.-

The property of x - ray equipment is changed by use condition and period, and so to maintenance the property of equipment in primary level is very important to get image information of high quality with minimum x-ray dose. Diagnostic x- ray equipment meantime has not been tested since it was inspected once by public inspection institute. Recently, Medical Act was amended to do continuously quality control for diagnostic x - ray equipment after pre - inspection. Centering around test items of diagnostic x - ray equipment in safe control regulations, this paper presented test method, test period and measurement equipments for quality control. It seems necessary to instruct continuously radiotechnicians and quality control workers practical technique as well as theory about this contents. Moreover, it seems necessary to do quality control of diagnostic x - ray equipment about considerable items of pre - inspection item (table 1) in a viewpoint of aggressive quality control.

환영 인사말

신동용,이창구 제어로봇시스템학회 2011 제어로봇시스템학회 각 지부별 자료집 Vol.2011 No.7

디지털 X선촬영장치의 성능관리

신동용 濟州漢拏大學論文編輯委員會 2010 論文集-논문집편집위원회 Vol.33 No.-

Recently. diagnosis X -ray equipment is being exchanged with digital x-ray equipment. These are the system that interpret with the monitor through digital image processing instead of by x-ray film. There is a computed radiography(CR) system and a digital radiography(DR) system. The digital system creates a digital image, makes database of it and is connected with a P ACS. Meantime, the quality control for the diagnosis X -ray equipment has been execute periodically every 3 year by the inspection method of national standard. The Inspection for the quality control consisted of electrical safety, radiation safety and system performance. But the quality control for the digital part of the CR and the DR system has not been executed. Therefore, self quality control of the digital part is necessary in order to maintain optimal performance of the system. In this paper we described the relation items for the self quality control of digital x-ray equipment. For the self quality control of the system, We introduced the theoretical background, the inspection items which can be performed by the user of the system to the safety control team or the service man. Moreover. overall and useful matters for the self quality control were presented. Also, the subjective(psychological) inspection methods as well as the objective(physical) inspection methods referred from this main text is needed. these are ROC method and the method using a real patient image. Finally, for getting a high quality image from the digital x-ray equipment, it seems necessary to perform the following activities as well as necessary inspection items in the clinic periodic upgrade of the operational software of the equipment. - getting the digital information for adapting at rapid change of digital environment. - the activity for information interchange for self quality control, etc.

의료용 X선장치의 전기적 QC에 관할 고찰

신동용 제주한라대학 2001 論文集 Vol.25 No.-

Medical X-ray equipments must be treated by radiation technician because those emit radiation that is dangerous for the human system, and quality control of Medical X-ray equipments must be done by the technician. Legal standards for quality control of medical X-ray equipments were made, and were amended recently. This paper introduced the revised standards and selected electrical standards which are directly influential in the X-ray image and patient exposure by radiation. This paper presented in detail about a theoretical concept, inspection standard, measurement method, and measurement apparatus. When performance of medical X-ray equipments is maintained the best state by quality control for electrical standards, it seems to get benefit as follows : a long life for the equipments, reducing abrupt run, down of the equipments, obtaining a X-ray image of high quality, reducing repeat film, reducing exposure dose of patient and so on.

의료용X선장치의 안전관리를 위한 반가층 측정에 관한 고찰

신동용 제주간호보건전문대학 2008 論文集-논문집편집위원회 Vol.31 No.-

When a x-ray tube is used for a long period the beam quality changes by reason of a crack or a distortion on target, a change with the passage of time, etc. The x-ray tube has an bad influence on the quality of x-ray images and exposure dose for patients. HVL(half value layer) is the element which evaluates the beam quality of the x-ray equipment. Therefore, we can control the x-ray beam quality through the HVL measurement. The national regulations for the safety control of medical x-ray equipment were amended in 2006. When measuring the HVL, the measurement method of the regulation recommends using the semilogarithmic paper for a diagnostic x-ray equipment and the calculation formula for a mammographic x-ray equipment. In this paper, we described the HVL measurement for the beam quality of a radiographic and a mammographic x-ray equipment. For the safety control of x-ray beam quality, theoretical background, national standards and testing methods were introduced. Moreover, through practical application for HVL measurement, overall and useful matters were presented. The control of the x-ray beam quality through HVL can achieve the aim of radiation safety control for medical x-ray systems redudion of the exposure dose for patients and the improvement of medical image. Therefore, safety control at the individual level as well as the national level is needed. For this, it seems necessary to perform the following adivities in the clinic- organizing a team with a responsible leader for safety control as leader buying and maintaining measurement equipment. - periodical testing for HVL by identical protocol. •maintaining the records and observing the change of beam quality.

실험적 편측 교합거상이 유견 하악두 성장에 미치는 영향

신동용,서정훈 서울大學校 齒科大學 1996 齒大 論文集 Vol.20 No.1

진단용 X선장치의 기계적 안전관리에 관한 고찰

신동용 濟州漢拏大學論文編輯委員會 2005 論文集-논문집편집위원회 Vol.28 No.-

Diagnostic x-ray equipment is that radiating x-rays with high voltage. These systems need a safety control because they can bring about injury to patients and technicians. The safety control has been installed on a national or individual level. The safety control can be considered in mechanical. electrical. functional and radioactive aspects, By the way, the safety control of the electrical. functional and radioactive parts has been done. but the mechanical part has been neglected. However. the mechanical part is an important factor which affects the other parts. In this paper. we describe the mechanical safety control of quality controls for diagnostic x-ray equipment. Standards and testing methods given to the pre-inspection. The Korean Food and Drug Administration(KFDA) were introduced and methods for mechanical safety control were presented. Moreover. we compared the rules of KS with those of KFDA for mechanical safety. However. as the rules of the post-inspection for the mechanical safety control were not founded. it is necessary to bring in and install the rules for safety control given to the pre-inspection of KFD A and the rules for x-ray equipment of KS. Besides. it seems necessary to perform activity as follows : - pre-control using methods of the trouble cycle and the security limits. - periodic testing by inspection table - maintaining records and considering countermeasures to test results

유선질환에서 Keratin출현도에 관한 면역 조직화학적 관찰

신동용 中央大學校 醫科大學 1987 中央醫大雜誌 Vol.12 No.3

일반 투시촬영장치의 정도관리에 대한 고찰

신동용 제주간호보건전문대학 2006 論文集-논문집편집위원회 Vol.29 No.-

Fluoroscopy differs from conventional x-ray imaging in that the x-ray image for a patient dignosis can be viewed in real time. The fluoroscopic system consists of x-ray tube equipment, (Ⅰ·Ⅰ), X-TV camera and a monitor. Instead of x-ray film, a imaging sensor is an image intensifier with a input and output fluorescent screen. The output image is displayed on the TV monitor through a CCD TV camera in real time These systems need constant safety control for radiation safety, electro- mechanical performance sustenance and high quality image. The quality control has been performed at a national and individual level. Though the quality control items for the safety control rules for a national inspection are very important, there are few items. Therefore, it is necessary to perform quality control by supplementing the related test items in pre-inspection of Koeres Food & Drug Administration (KFDA). In this paper, we desα1bed the quality control of the fluoroscopic part of radiographic and fluoroscopic x-ray equipment. As well as the safety control rules of KFDA, Wtandards and testing methods given to the pre-inspection of the organ were introducedl. Moreover, thevarious methods for a fluoroscopic system are presented, that is, other inspection rules, inspection period, and test tools. By the means of quality control for a fluoroscopic system; it seems to obtain the following advantages ; - performance sustenance of appropriate level for the system. - acquisition of high quality image - exposure dose reduction for a patient and a system user. - minimization of affairs risk by prior management