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RISS 인기검색어
- 검색키워드
- 저자 : 조한영(Han Yeong Cho) (검색결과 3 건)
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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.
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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.
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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.
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