배변조영술과 대장통과시간 검사를 함께 시행한 환자의 배변 유형 고찰 : 판독 소견을 중심으로

이양섭(Yang Sub Lee),이원홍(Won Hong Lee),손순룡(Soon Yong Son),이용문(Yong Moon Lee),김창복(Chang Bok Kim) 대한영상의학기술학회 2007 대한영상의학기술학회 논문지 Vol.2007 No.-

Purpose : This study is to find a mutual relation between the defecography and CTTS for diagnosis of chronic idiopathic constipation. Materials and methods : 148 patients, who have amount of injection and evacuation in taking defecography, was examined the defecography and CTTS. The finding of defecography was divided into five types including normality (type I), hypertonic lower anal sphincter (HLAS; Type Il), dyskinetic puborectal sling (DPS; Type III), spastic pelvic floor syndrome (SPFS; Type IV), and others (Type V ). Also that of CTTS was divided into four types including normality (type i ), colonic inertia (CI; Type ii), pelvic outlet obstruction (POO; Type iii), and hindgut dysfunction (HD; Type iv). Results : In the defecography, evacuation rate of 80% or more was in 51(34.5%), the lowest evacuation rate was in type IV(24.6%). The evacuation rate of finding of normality in the two study was 78.9%. The lowest evacuation rate was in type IV(52.5%) of type iii, and the highest evacuation rate was in type V(97.7%) of type iii. 8 patients had a finding of normality in the CTTS was included Type V of the defecography. Conclusion : The defecography and CTTS for diagnosis of chronic idiopathic constipation have to be examined together, because the two are complementary relation.

방사선 피폭에 대한 의료진의 인식도 조사: Mobile X-선 접점부서 대상으로

이양섭(Yang-Sub Lee),김성진(Seong-Jin Kim),우봉철(Bong-Cheol Woo),박장흠(Jang-Heum Park),송인욱(In-Wook Song),장동수(Dong-Soo Chang),이관섭(Kwan-Sup Lee),이미화(Mi-Hwa Lee) 대한영상의학기술학회 2012 대한영상의학기술학회 논문지 Vol.2012 No.-

Purpose: The medical staff of the radiation exposure awareness about analyzes the factors that affect for excessive psychological anxiety and just a ploy to get proper recognition for radiation, and produced promotional material for the radiation exposure is also recognized for improvement and training, should we wish to using of as the basis for it. Materials and Methods: Mobile x-ray inspection of contacts at the intensive care unit(ICU), operating room(OR), emergency room(ER), Ward s medical team for 2 occasions questionnaire survey through. Promotional material in order to learn to read before and after the second round of the survey respondents of cognitive maps of the promotional material for only 106 read medical staff. From March until October 2011, Mobile X-ray dose related data collection, questionnaire creation, radiation dose capacity measurement, promotional materials and public relations, said a poll. The questionnaires consisted of six item on the general characteristics, recognition of radiation dose, radiation exposure state and dose management status, to the knowledge of radiation dose, protection and education of radiation dose, radiation safety management situation and status. Some questions were graded on a five point Likert scal. The average and standard deviation were calculated. Results: Primary survey for men and women respectively 27 and 241 persons and in the second survey, males and women respectively 3 and 103 persons. The business-specific distribution Wards(126), OR(115), ICU(103), ER(30). The common attribute is gender, occupations, in career, there was significant difference. Radiation dose awareness also worked to improve the PR later (p<0.05). Radiation exposure and strengthens the dose after promoting the management situation is found (p>0.05). Of protection and education and increased after seeing promotional material (p>0.05). Radiation safety management situation and increase your status after you promote the safety management are strengthened (p>0.05). Business in the operating room by radiation also recognize most, ER>Wards>ICU showed up in the order. Job experience in radiation dose awareness also showed high annual increases and unmarried women. Conclusion: Overall promotional materials because of the perception of radiation bomb and mind in the knowledge that help show the difference, promotional material through the passing of knowledge worked but did not improve the situation. Due to the lack of basic knowledge about radiation, habitual defensive actions, data deficient, the lack of interest, and promote. Therefore, hospital-wide content development and radiation for systemic education for and defense of and publicity needs to be strengthened. 목적: 의료진들의 방사선 피폭에 대한 인지도에 영향을 미치는 요인을 분석하여 방사선 피폭에 대한 과도한 심리적 불안을 해소시키고 방사선에 대한 올바른 인식을 갖도록 하기 위하여 피폭선량에 대한 홍보자료를 제작하여 방사선에 대한 인식도 개선과 교육을 위한 기초 자료로 활용하고자 하였다. 대상 및 방법: Mobile X-선 검사의 접점 부서인 중환자실, 수술실, 응급실, 병동의 의료진을 대상으로 2차에 걸쳐 설문 조사하였다. 홍보자료를 읽기 전과 후에 인식도 변화를 알아 보기 위해 2차 설문지 응답자 중 홍보자료를 읽어본 의료진 106명(42.6%)만을 대상자로 하였다. 2011년 3월부터 10월까지 X-선 피폭 관련 자료수집 및 설문지 제작, 피폭선량 측정, 홍보자료 제작 및 홍보를 하였다. 설문지는 응답자와 관련된 일반적인 특성, 방사선 피폭에 대한 인식도, 방사선의 노출 정도와 피폭관리 실태, 방사선 피폭에 대한 지식, 방사선 피폭의 예방과 교육, 방사선 안전관리 실태 및 현황 등 총 6개 항목으로 구성하였다. 결과: 1차 설문조사 대상자는 남성 27명, 여성 241명, 2차 설문조사에는 남성 3명(2.8%), 여성 103명(97.2%) 이었다. 근무지별 분포는 병동 126명(33.69%), 수술실 115명(30.75%), 중환자실 103명(27.54%), 응급실 30명(8.02%) 순이었다. 대상자의 일반적 특성은 성별, 직종, 연차에서 유의한 차이가 있었다. 방사선 피폭에 대한 인식도는 홍보 후에 개선효과가 있었다(p<0.05). 방사선의 노출 정도와 피폭관리 실태는 홍보 후에 강화하는 것으로 나타났 다(p>0.05). 방사선 피폭에 대한 지식은 홍보자료를 본 후에 증가하였다(p<0.05). 방사선 피폭의 예방과 교육은 홍보자료를 본 후에 증가하였다(p>0.05). 방사선 안전관리 실태 및현황은 홍보 후에 증가하여 안전관리를 강화하는 것으로 나타났다(p>0.05). 근무지에 따른 방사선 인식도는 수술실에서 가장 높았고, 응급실>병동>중환자실 순으로 낮게 나타났다. 업무경력에 따른 방사선 피폭에 대한 인식도는 연차가 증가할수록 높게 나타났다. 방사선 피폭에 대한 전반적인 인식도는 미혼일수록 예민하였다. 결론: 전반적으로 홍보자료로 인하여 방사선 피폭에 대한 인식도와 지식에서 유의한 차이가 있는 것으로 나타났고, 홍보자료를 통한 지식의 전달은 효과가 있었지만 실태는 개선되지 않았다. 원인은 의료진의 방사선에 대한 기본적인 지식과 자료의 부족, 습관적인 방어적 행동, 불충분한 홍보 기간, 관심의 부족으로 사료된다. 결론적으로 방사선 피폭에 대한 막연한 두려움과 공포를 줄이기 위해서는 병원차원에서 콘텐츠를 개발하여 방사선의 위해와 방어에 대한 체계적인 교육을 통한 지식과 정보 제공 및 홍보를 강화해야 한다고 생각한다.

Study on Application of Noise Path Analysis for Improving Interior Noise at the Idle of a Passenger Vehicle

이양섭(Yang Sub Lee),송윤철(Yoon Chul Song) Korean Society for Precision Engineering 1999 한국정밀공학회지 Vol.16 No.8

Experimental Investigation of Noise and Vibration Phenomena of a Heavy-Duty Truck at High-Speed Driving

이양섭(Yang Sub Lee),한문식(Moon Sik Han),조항원(Hang Won Cho) Korean Society for Precision Engineering 1999 한국정밀공학회지 Vol.16 No.6

신장이식예정 환자의 대장조영검사 시 전처치 개선을 통한 재검 감소와 영상의 질 개선

이양섭(Yang Sub Lee),이원홍(Won Hong Lee),이진학(Jin Hak Lee),손은영(Eun Young Son),강성호(Seong Ho Kang),이용문(Yong Moon Lee) 대한영상의학기술학회 2006 대한영상의학기술학회 논문지 Vol.2006 No.1

There are many cases of poor preparation in examining double contrast colon study of recipient a kidney transplant, because the patient with renal failure is limited in intake of water. This study is to improve problems to be caused by poor preparation in examining double contrast colon study of the patient with renal failure by changing the laxative. Of total objective 142 patients with renal failure, 77 patients by Magcorol (250ml) and Dulcorax 2 Tablets and 65 patients by Colonlyte (4ℓ) were examined double contrast colon study. The images were classified into 4 groups including good, common, poor, and fail according to residual feces and mucosal coating by two radiological technologist. Of 77 patients by Magcorol (250ml) and Dulcorax 2 Tablets used for evacuation, Good, common, poor, and fail group were in 11(14.3%), 18(23.4%), 35(45.4%), and 13(16.9%), respectively. Of 65 patients by Colonlyte (4ℓ), Good, common, poor, and fail group were in 10(15.4%), 33(50.8%), 22(33.8%), and 0(0%). In conclusion, to improve a repeat examination and image quality of double contrast colon study of the patient with renal failure, Magcorol (250ml) and Dulcorax 2 Tablets used for the laxative are changed by Colonlyte (4ℓ).

Numerical Analysis for Designing Nonlinearly Ultrasonic Proximity Sensors in Air

이양섭(Yang Sub Lee) Korean Society for Precision Engineering 1999 한국정밀공학회지 Vol.16 No.5

초음파 탐촉자(Probes)의 위생관리 실태와 감염 인식도 조사 및 세균 오염도 측정

김창복(Chang Bok Lee),이양섭(Yang Sub Lee),이원홍(Won Hong Lee),조정찬(Cheong Chan Cho),윤향이(Hyang Yi Yoon),이용문(Yong Moon Lee),김영근(Young Keun Kim),이경섭(Kyung Sup Lee) 대한방사선과학회(구 대한방사선기술학회) 2004 방사선기술과학 Vol.27 No.3

The gel, which is stained on probe after ultrasonogmphy, is a good circumstances for proliferation of microbe. This study is to investigate into the actual state of sanitary management, recognition degree and infection level of ultrasonographic probes. We had performed a question with telephone to 42 hospitals in Seoul area from December in 2003. We also cultured to obtained a sample from three ultrasonographic units to investigate infection level of the probes. Sanita교 management of the probes was performed in 21 hospitals with alcohol cotton, Sanitary management was performed daily in 14 hospitals. Most hospitals used cotton towel for clearing of gel stained on probes. Preventive management against infection was performed in 32 hospitals with vinyl cover, surgical glove, or alcohol sterilization etc. In the recognition degree on infection, the response that using method of ultrasonographic probes is insanitary were in 78.6%(33 hospitals), and 54.8%(23 hospitals) responded that bacteria can be infected through the probes. In the results of germiculture, bacteria and fungi were detected too number of to count, but escherichia coli was not detected. In conclusion, The gel stained on probe after ultrasonography must be cleared completely, and it is necessary that change of reco후ition on sanitary management. 초음파 검사 후 완전히 제거되지 않고 남아있는 Gel은 미생물이 증식하기에 좋은 조건을 가지고 있다. 따라서 본 연구자들은 초음파 탐촉자의 위생관리 실태와 위생과 감염에 대한 인식의 정도를 알아보기 위해서 2003년 12월부터 서울지역에 있는 42개의 병원을 대상으로 전화설문을 시행하였다. 또한 세 대의 초음파 장치 탐촉자에서 시료를 채취하여 미생물을 배양 증식한 후 탐촉자의 오염된 정도를 알아보았다. 21개 병원만이 탐촉자의 위생관리를 실시하였고, 소독 방법은 주로 알콜솜을 많이 이용하였다. 위생관리 주기는 14개 병원만이 매일 하는 것으로 조사되었다. 탐촉자에 묻은 Gel제거 방법은 면수건을 많이 이용 하였다. 감염의 위험에 노출되어 있는 환자의 초음파 검사 시 감염예방관리를 하고 있는 병원은 32개였고 환자 검사 시 탐촉자를 비닐커버나 외과용 장갑, 알콜 소독 후 사용하고 있는 것으로 조사되었다. 감염 인식도 조사에서 초음파 탐촉자 사용법이 비위생적이라는 생각이 78.6%(33개)였고, 탐촉자를 통한 세균이 감염여부에 대해 54,8%(23개)가 감염될 수 있을 것으로 생각하고 있었다. 탐촉자에서 채취한 시료를 배양 한 결과 세균과 진균이 셀 수 없이 너무 많이 오염되어 있었고 대장균은 검출되지 않았다. 결론적으로 초음파 검사 후에는 탐촉자에 묻어있는 Gel에서 세균이 증식하여 감염이 될 수 있으므로 완전히 제거하여 환자간 교차 감염의 위험요인을 줄이는 것과 감염관리에 대한 의식전환이 필요하다고 생각된다.

Digital Fluoroscopy System에서 촬영조건의 변화에 따른 DICOM Image의 Histogram 변화와 JPEG 압축률의 변화 분석

황민호(Min Ho Hwang),이원홍(Won Hong Lee),이양섭(Yang Sub Lee),이영선(Young Seon Lee),강성호(Seong Ho Kang),이용문(Yong Moon Lee),이원구(Won Koo Lee) 대한영상의학기술학회 2006 대한영상의학기술학회 논문지 Vol.2006 No.1

To find the proper exposure condition in digital fluoroscopic system, it is compared the change of histogram and JPEG compression rate of DICOM Image according to exposure condition. Digital fluoroscopic system was Philips easy diagnost with under table tube. BaSO4 of 220% w/v phantom to the size 18×22.5 ×0.2㎝ and two polyethylene phantom to 35.5×35.6×7㎝ were used for this study. A standard value (90㎸, 1.93mAs, 9.55㎳, 202㎃) was obtained by Automatic exposure Controler (AEC) for comparing with manual exposure condition. The test were done by changing 40, 50, 60, 70, 81, 90, 102, 109, 117㎸ with mAs fixed, and 63, 80, 100, 125, 160, 200, 250, 320, 400㎃ with ㎸ fixed, and 3.2, 4, 5, 6.2, 8, 10, 12.5 16, 20㎳ with mA and ㎸ fixed. Distribution of histogram of DICOM Image in the case of mAs fixed shifted from left toward right according to ㎸ increment gradually. Distribution of histogram in the case of ㎸ fixed also shifted from left toward right according to mAs increment gradually. When mA and ㎸ was fixed, the histogram was not a significant change according to change ㎳. JPEG compression rate was the lowest at standard value including 90㎸, 1.93mAs, 9.55㎳,and 202㎃ obtained by AEC. The exposure condition is better by AEC than by manual setting up. Analysis of histogram of DICOM Image can be used as a method for quality control of AEC.

Exposure Index를 이용한 이동형 디지털 X선 장치의 흉부촬영 적정노출조건에 관한 연구

김재인,이양섭,장동수,정민철,배승호,이관섭,하동윤,Kim, Jae-In,Lee, Yang-Sub,Jang, Dong-Soo,Jung, Min-Cheol,Bae, Seung-Ho,Lee, Kwan-Sub,Ha, Dong-Yoon 대한디지털의료영상학회 2011 대한디지털의료영상학회논문지 Vol.13 No.3

The purpose of this report is recommending a standard indicator which reflects the radiation exposure that is incident on a detector after every exposure event and that reflects the noise levels present in the image data. The experiment was performed with mobile digital X-ray unit and used a acrylic phantom for exposure index measurement. Exposure modality was kVp, mAs, SID. After every exposure, make a data sheet for characteristic curve of detector response. The equipment performed Mobile digital X-ray unit provide the user with values ralated to the incident exposure(air kerma)to the digital detector. They are showed as a logarithmic function shaped. As a result, DEI means a relative measure of exposure to the detector, as compared to the expected exposure for a particular anatomical view. Radiographic technique is the combination of factors used to exposure an anatomical part to produce a high quality radiography and technique charts used most commonly by radiographers to produce consistently exposure level which patient dose can be kept acceptably low.

상부위장관 조영 검사 시 조영제와 조영보조제의 사용실태 조사 및 고찰

이상훈(Sang Hoon Lee),이양섭(Yang Sub Lee) 대한영상의학기술학회 2005 대한영상의학기술학회 논문지 Vol.2005 No.1

To research on used actual conditions of contrast media and effervescent agent and deforming agent in UGI Series, we made up questionnaires by e-mail. Twenty eight hospitals were made up questionnaires by e-mail. The questionnaires consists of three items including contrast media, effervescent agent and defoaming agent. BaSO4 with powder and BaSO4 suspension were used at the rate of 7 to 8. The BaSO4 suspension with less than 200w/v% was used in 18 hospitals (64.3%). The remained BaSO4 suspension after use was kept without dumping in 12 hospitals. A reform measure for matter of concern after PACS introduction will be practice of examiners for something known on exposure dose of radiation. Effervescent agent with 4g was used in 22 hospitals (78.6%). In time of administration of effervescent agent, before administration of BaSO4 suspension and after so was at the rate of 4 to 3. 22 hospitals (78.6%) did not use the deforming agent. It is necessary that standardization on use method of agent in UGI Series should be established.