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3부위 최적맥파의 주파(h1) 비율 분석을 통한 전체 체순환 평가방법
유승연 ( Seung-yeon Yu ),박은성 ( Eun-sung Park ),최예빈 ( Ye-bin Choi ),이용흠 ( Yong-heum Lee ) 대한경락경혈학회 2016 Korean Journal of Acupuncture Vol.33 No.3
Objectives : Recently, people who have normal brachial blood pressure(BP) are being threatened by high-risk disease such as stroke. The aim of this study is to suggest that new method to assess systemic circulation. It can be performed by analyzing optimal blood pulse wave on 3 sites belonging to subjects that have normal BP. Methods : We respectively extracted main peaks(h1) of optimal blood pulse wave on left/right temporal artery(LR1=h1), radial artery(LR2=h1) and dorsalis pedis artery(LR3=h1). We obtained h1 from 30 subjects who are discreetly chosen and have normal BP. Main peak(h1) can be extracted by using 3D pulse imaging analyser(DMP-1000+, DAEYOMEDI Co., Korea) that has 5-level pressure method. We analyzed the ratio of [LR1/LR2] and [LR3/LR2]. Results : In the case of male group, the results are [LR1/LR2=0.7100.177] and [LR3/LR2=0.9290.317]. In the case of female group, the results are [LR1/LR2=0.6680.121] and [LR3/LR2=0.7050.195]. Especially, it is statistically verified that the result of ratio [LR3/LR2] is much higher in male group than in female group(p<0.05). Conclusions : We suggested the standard ratio of [LR1/LR2] and [LR3/LR2] for normal subjects, respectively. It can be adopted as a new method to evaluate the systemic circulation.
소아의 식도 상복부위장관조영검사에서 생식선 차폐 유무에 따른 생식선량에 관한 연구
노현아(Hyun-A Noh),김민정(Min-Jeong Kim),박은성(Eun-Seung Park),성민숙(Min-Sook Sung),하동윤(Dong-Yoon Ha) 대한영상의학기술학회 2012 대한영상의학기술학회 논문지 Vol.2012 No.-
목적: 본 연구는 소아의 하복부 전체를 감싸는 랩스커트 형식의 차폐도구를 제작하여 소아의 식도조영검사와 상복부위장관조영검사에서 실험을 통해 생식선 차폐 유무에 따른 생식선의 흡수선량의 변화를 알아보고, 이를 줄일 수 있는 방안을 알아보고자 하였다. 방법: 2011년 1월부터 3월까지 본원에서 식도조영검사와 상복부위장관조영검사를 시행한 소아 50명을 대상으로 검사 중 평균 투시시간과 저격촬영의 수를 알아보았다. 파악된 평균 투시시간은 331.5초와 촬영된 영상은 18장이었으며 이를 적용하여 소아팬텀과 유리선량계를 이용하여 생식선이 포함되지 않도록 조사영역을 설정한 후 생식선 차폐 유무에 따른 생식선의 흡수선량을 비교하였다(협조군). 또한 협조가 어려운 소아를 고려하여 위의 파악된 투시시간과 저격촬영의 수의 1/10의 조건으로 생식선이 포함되도록 조사영역을 설정한 후생식선 차폐 유무에 따른 생식선의 흡수선량을 비교하였다(비협조군). 결과: 1. 협조군의 생식선 흡수선량 결과 협조군의 경우 생식선 차폐 유무에 따른 흡수선량 결과, 차폐를 시행하였을 경우 난소 99.5 µGy, 자궁 84 µGy, 전립선 33 µGy, 정낭 15 µGy로 나타났다. 차폐를 하지 않았을 경우 112.5 µGy, 자궁 86.5 µGy, 전립선 34 µGy, 정낭 28 µGy로 생식선 차폐 시행으로 난소, 자궁, 전립선에서의 선량 변화는 미미했으나, 정낭의 경우 약 46.4%의 선량감소를 보였다. 2. 비협조군의 생식선 흡수선량 결과 비협조군의 경우 생식선 차폐 유무에 따른 흡수선량 결과, 차폐를 시행하였을 경우 난소 262 µGy, 자궁 201.5 µGy, 전립선 67 µGy, 정낭 40.5 µGy로 나타났다. 차폐를 하지 않았을 경우 난소 767 µGy, 자궁은 512 µGy, 전립선은 787 µGy, 정낭 1429 µGy로 나타나차폐를 시행하였을 때보다 난소는 약 3배, 자궁은 약 2.5배, 전립선은 약 12배, 정낭은 약 35배나 높게 나타났으며 생식선 차폐 시행으로 무려 약 61~97%의 선량감소를 보였다. 결론: 소아의 식도 위장조영검사 시 생식선 피폭을 줄이기 위해서는 관심부위만 조사영역을 최소화하여 검사를 진행함과 동시에 생식선 차폐라는 보다 적극적이면서도 각별한 노력이 수반될 때 소아의 생식선 피폭을 줄일 수 있을 것으로 생각된다. Purpose: We studied pediatric absorbed dose while performing the pediatric esophagography and upper gastrointestinal series using gonadal shielding. Materials and Methods: We recorded pediatric absorbed dose of gonad during the esophagography and upper gastrointestinal series from January 2011 to March 2011. And we recorded average fluoroscopic time and spot images of 50 pediatric patients. It wes measured such as 331.5s and 18 images. We used pediatric phantom and radiophotoluminescent Glass Rod Detector (GRD). First area of field was to include the gonads (cooperation). Second area of field was not to include the gonads considering active pediatrics (noncooperation). By applying the measured values, we compared absorbed does of gonad according to existence of gonadal shielding. Results: 1. Cooperation : Absorbed dose of gonads was measured on 99.5 μGy (ovary), 84 μ Gy (uterus), 33 μGy (prostate) and 15 μGy (seminal vesicle) include gonadal shielding. On the contrary without gonadal shielding, absorbed dose was measured on 112.5 μGy (ovary), 86.5 μGy (uterus), 34 μGy (prostate) and 28 μGy (seminal vesicle). Result of comparison of the absorbed dose seminal vesicle with gonadal shielding was reduced more than without that (46.4%). 2. Noncooperation : Absorbed dose of gonads was measured on 262 μGy (ovary), 201.5 μGy (uterus), 67 μGy (prostate) and 40.5 μGy (seminal vesicle) include gonadal shielding. On the contrary without gonadal shielding, the absorbed dose was measured on 767 μGy (ovary), 512 μGy (uterus), 787 μGy (prostate) and 1429 μGy (seminal vesicle). Result of comparison of absorbed dose with gonadal shielding was reduced more than without that (61~97%). The absorbed dose of ovary, uterus, prostate with shielding was reduce more than 4.5~12 times.Conclusion: Operators should examine pediatric fluoroscopy examinations to reduce patient’s dose by minimizing the area of field and using gonadal shielding for gonadal dose reduction.
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.