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      • 소아 일반촬영 검사 시 보호자 참여의사와방사선에 대한 인식도 조사

        곽종혁(Jong-Hyeok Kwak), 박찬혁(Chan-Hyeok Park), 윤진호(Jin-Ho Yun), 현진경(Jin-Kyeong Hyeon), 김준혁(Jun-Hyeok Kim), 오용석(Yong-Seok Oh), 김성건(Seong-Geon Kim), 최민경(Min-Kyeong Choi), 한미래(Mi-Rae Han), 김길환(Gil-Hwan Kim), 이하나(Ha-N) 대한영상의학기술학회 2018 대한영상의학기술학회 논문지 Vol.2018 No.1

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

        Purpose:This study was conducted to improve the quality of the examination and facilitate the communication be-tween the radiologist and the guardians by investigating participants and their perception of radiation about general radiography of children. Materials and Methods:From June 1, 2017 to December 31, 2017, the questionnaires were surveyed for the guardians of children who visited the P Hospital in Yangsan, Kyung-nam Province. The number of subjects was calculated using statistical power analysis using G * power 3.1 analysis. Estimated sample size was calculated as 93 when it was the moderate effect size of 0.15 for the simple regression analysis, 95% for the power of test, the significance level of 0.05, and the awareness of radiation exposure prevention of 1, which is related to the degree of awareness of the guardian. A total of 210 people were selected considering the recovery rate and insufficient number of responses. All items were evaluated on a 5-point Likert-type scale, except for questions related to general and participant intention. In this study, data were analyzed using SPSS 21.0 for windows statistical package program and variables were evaluated based on Chronbach s Alpha coefficient. Descriptive statistics were used to analyze the general characteristics and participation intention of the sample. T-test, One-way ANOVA, Pearson correlation, and Simple regression analysis were used to comply with the purpose of the study. Result: The results of the reliability analysis of the variables were more than 0.6 in Chronbach's Alpha, 0.645 for Psychological status at general radiography of children, 0.667 for radiation recognition, and 0.666 for radiation exposure prevention recognition. In the recognition survey of guardian participant intention, to this question “Have you ever been involved in the general radiography of children in the past?” Yes (66.2%) and No (33.8%) were answered. The reason for participating in the general radiography of children were request of radiologist (46.0%) own volition and by child's request (20.9%). To the question of “Do you think it is necessary for parents to participate in the gen-eral radiography of children?” yes (84.3%) and no (15.7%) were responded. The question “If you are willing to participate, why?” showed 80.8% for the stability of the child and 18.1% for the confirmation of the exact examination according to the site. The question “What if there is no intention to participate?” were 54.8% , 19.4%, and 12.9% due to radiologist's duty, negative health effects and vague fear of radiation exposure respectively. There was a statistically significant difference according to gender and age of children (p<0.05) in the analysis of the psychological status of the guardians in the general radiography of children. There was statistically significant difference according to gender and educational background (P<0.05). There was a statistically significant difference according to age, gender, childhood age and educational background in the perception of prevention of radiation exposure of guardians in general radiography of children (p<0.05). Conclusion:From the results of the study, the guardians at the general radiography recognized the need for accompanying examination with them due to the stable and accurate examination of the children. However, it was not considered as distrust of radiologists or dangerous to the physical hazards of radiation exposure. Therefore, it is desirable to eliminate the psychological anxiety of the children and to induce the guardians to accompany in the pediatric examination. In addition it is considered that the plans to explain the examination method and the necessity of wear protective equipment are needed. 목 적:소아 일반촬영 검사 시 보호자들의 참여 여부와 방사선에 대한 인식도를 파악함으로써 검사자인 방사선사와 보호자의 상호 의사소통을 원활히하고 검사의 질을 향상시키고자 본 연구를 시행하였다. 대상 및 방법: 경남 양산 소재 P대학병원에 내원한, 소아 아동이 있는 보호자를 대상으로 2017년 6월 1일부터 2017년 12월 31일까지 설문조사하였으며 연구 대상의 수는 Statistical power analysis using G * power 3.1 analysis를 이용하여 산출하였고, 예상 표본수는 단순 회귀분석을 위한 중간 정도의 효과크기 0.15, 검정력 95%, 유의수준 0.05, 보호자의 인식도와 관련성이 있는 변인인 방사선 피폭방지인식도를 1로 하였을 때 93명으로 계산 되었고, 회수율과 불충분한 응답 수를 고려하여 총 210명을 선정 일반적 사항 및 참여의사 여부에 관련된 문항을 제외한 모든 문항을 Likert 방식의 5점 척도로 평가하였다. 본 연구에서는 SPSS 21.0 for windows 통계 패키지 프로그램을 사용 하여 자료 분석하였고 Chronbach s Alpha계수를 근거로 변수를 평가하였다. 표본의 일반적 특성 및 참여의사 여부를 분석하기 위해 기술통계를 하였으며 연구의 목적에 부합 되도록 평균차 분석 (T-test) 및 일원배치분산분석(One-way ANOVA), 상관관계분석(Pearson correlation), 단순 회귀분석(Simple regression analysis)등을 시행하였다. 결 과:변수의 신뢰도 분석결과는 소아 일반촬영 시 심리 상태 0.645, 방사선 인식도 0.667, 방사선 피폭 방지 인식도 0.666으로 Chronbach s Alpha 0.6이상이었다. 소아일반촬영 시 보호자 참여의사 여부 인식도조사에서 “ 과거에 소아 일반촬영에 참여해 본적이 있는가?”라는 질문에 그렇다(66.2%), 아니다(33.8%)로 나타났다. 소아 일반촬영에 참여해 본 경우, 참여한 이유는 방사선사의 요청 (46.0%), 본인의 의지(28.8%), 아이의 요청 (20.9%)로 나타났다. “소아 일반촬영 시 보호자의 참여가 필요하다고 생각하는가?”라는 질문에 그렇다(84.3%), 아니다(15.7%)로 나타났다. “참여할 생각이 있다면 그 이유는 무엇인가?”라는 질문에는 아이의 안정을 위해(80.8%), 부위에 따른 정확한 검사확인을 위해(18.1%)라고 나타났으며, “참여할 생각이 없다면 그 이유는 무엇인가?”라는 질문에는 방사선사의 업무이기 때문에(54.8%), 건강에 나쁜 영향을 미치기 때문에(19.4%), 방사선 피폭에 대한 막연한 두려움 때문에(12.9%)로 나타났다. 소아 일반촬영 시 보호자의 심리 상태 인식도 분석에서는 성별, 소아 연령에 따라 통계적으로 유의한 차이가 있었고(p<0.05), 소아 일반촬영 시 보호자의 방사선 인식도 분석에서는 성별, 학력에 따라 통계적으로 유의한 차이가 나타났으며(p<0.05), 소아 일반촬영 시 보호자의 방사선 피폭 방지에 대한 인식도 분석에서는 연령, 성별, 소아 연령, 학력에 따라 통계적으로 유의한 차이가 있었다(p<0.05). 결 론:연구 결과에서 볼 때 소아 일반촬영 시 보호자들은 우선적으로 아이의 안정과 정확한 검사를 위해 방사선사와 동반검사가 필요하다고 인식하고 있었으며, 방사선사의 불신이나 방사선의 피폭에 대한 신체적 위해요소에는 그다지 위험하다고 인식하고 있지 않았다. 그러므로 소아 일반촬영 검사 시 그들의 심리적 불안감을 해소하고 정확한 검사를 위해 보호자의 동반을 유도하는 것이 바람직하며 검사방법과 보호 장구 착용의 필요성을 설명할 수 있는 방안이 필요한 것으로 사료되어진다.

      • KCI등재

        A Case Report of HBsAg Seroclearance in Chronic Hepatitis B Patient

        ( Hyeok Jae Lee ), ( Min-hyeok Lee ) 대한임상검사과학회 2012 대한임상검사과학회지(KJCLS) Vol.44 No.3

        Hepatitis B surface antigen (HBsAg) seroclearance is a rare event in chronic hepatitis B virus (HBV) infection which acquires the disease early in life. A case study have examined with asymptomatic chronic hepatitis B carrier who exhibits HBsAg seroclearance in anti-HBe positive. We comprehensively studied the biochemical, virological and clinical aspects of a patient with HBsAg seroclearance. Liver biochemistry, serological markers, serum HBV DNA levels, and development of clinical complications were monitored. Mutation of hepatitis B virus is suspected serum HBsAg detected by the HBsAg assay systems of VITROS (OrthoClinical Diagnostics, USA), AxSYM (Abbott Laboratories, USA), Elecsys (Roche Diagnostics, Germany) and ADVIA Centaur (Bayer Diagnostics, USA). These four immunoassays showed negative results. Also, the patient had undetectable serum HBV DNA. Therefore, no mutation within the “a” determinant of HBsAg, which might escape detection from HBsAg immunoassay were found. Natural seroclearance was confirmed.

      • KCI등재

        Virological Characteristics in Chronic Hepatitis B Patients with Concurrent HBsAg and anti-HBs Positivity

        Hyeok-Jae,Lee,Min-Hyeok,Lee 대한의생명과학회 2012 Biomedical Science Letters Vol.18 No.3

        In this study, we investigated the virological characteristics, HBV DNA levels and presence of mutations of "a" determinant in the HBsAg S gene in chronic hepatitis B patients with coexisting HBsAg and anti-HBs. The 18 patients who were diagnosed with chronic hepatitis B were both positive for HBsAg and anti-HBs. HBV Among them, 15 patients were DNA positive. The median of HBV DNA levels in serum was 2.18×107 copies/mL with the HBsAg+/anti-HBsAb+ patients. Also, 4 of 8 HBeAg negative patients had HBV DNA levels higher than 104 copies/mL and the median of HBV DNA levels was 2.03×106 copies/mL, which were significantly high. These results showed that viral replication still existed in most of the patients of the concomitant HBsAg and anti-HBs, and even in the some HBeAg negative patients. Furthermore, mutation within the "a" determinant of HBV were found in 7 of 15 patients. The most frequent changes were located at positions aa126. In addition, one mutation observed for HBsAg only positive.

      • SCIEKCI등재

        CASE REPORT : Two dislodged and crushed coronary stents: treatment of two simultaneously dislodged stents using crushing techniques

        ( Dong Hyeok Yang ), ( Seong Ill Woo ), ( Dae Hyeok Kim ), ( Sang Don Park ), ( Ji Hun Jang ), ( Jun Kwan ), ( Sung Hee Shin ) 대한내과학회 2013 The Korean Journal of Internal Medicine Vol.28 No.6

        Coronary stent dislodgement is a rare complication of percutaneous coronary intervention. We report a rare case of dislodgement of two intracoronary stents. On withdrawal of two balloon catheters, one with a guide wire was mechanically distorted from the left main (LM) to the proximal left anterior descending artery (LAD) while the other was dislodged from the LM to the ostial left circumflex ar-tery. The stent in the LAD could not be retrieved into the guide catheter using a Goose neck snare, because it was caught on a previously deployed stent at the mid LAD. A new stent was quickly deployed from the LM to the proximal LAD, be-cause the patient developed cardiogenic shock. Both stents, including a distorted and elongated stent, were crushed to the LM wall. Stent deployment and crushing may be a good alternative technique to retrieving a dislodged stent.

      • KCI등재SCOPUS

        Optimal Design of a Planar-Type Antenna with a Reduced Number of Design Parameters Using Taguchi Method and Adaptive Particle Swarm Optimization

        Jeong-Hyeok,Lee,Dong-Hyeok,Jang,Hyeong-Seok,Kim 대한전기학회 2014 Journal of Electrical Engineering & Technology Vol.9 No.6

        This paper presents a method to optimize the design of a planar-type antenna and reduce the number of design parameters for rapid computation. The electromagnetic characteristics of the structure are analyzed, and Taguchi method is used to identify critical design parameters. Adaptive particle swarm optimization, which has a faster convergence rate than particle swarm optimization, is used to achieve the design goal effectively. A compact dual-band USB dongle antenna is tested to verify the advantage of the proposed method. In this case, we can use only five selected geometrical parameters instead of eighteen to accelerate the optimization of the antenna design. The 10 dB bandwidth for return loss ranges from 2.3 GHz to 2.7 GHz and from 5.1 GHz to 5.9 GHz, covering all the WiBro, Bluetooth, WiMAX, and 802.11 b/g/n WLAN bands in both simulation and measurement. The optimization process enables the antenna design to achieve the required performance with fewer design parameters.

      • KCI등재

        Effects of Axillary Crutch Length on EMG Activity of the Trunk Muscles and Range of Motion of the Lumbar Spine, Pelvis, and Hip Joint in Healthy Men

        Min-hyeok,Kang,Jun-hyeok,Jang,Tae-hoon,Kim,Jae-seop,Oh 한국전문물리치료학회 2013 한국전문물리치료학회지 Vol.20 No.1

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

        This study investigated the effects of axillary crutch length on trunk muscle activity and lumbo-pelvic-hip complex movements during crutch gait. Eleven healthy men participated in this study. The participants performed a three-point gait with optimal, shorter, and longer crutch lengths. Weight-bearing (WB) side was determined as the dominant leg side. The electromyography (EMG) activity of the bilateral rectus abdominis (RA) and erector spinae (ES) muscles and lumbo-pelvic-hip complex movements were monitored using a three-dimensional motion system with wireless surface EMG. Differences in the EMG activity of RA and ES muscles and range of motion (ROM) of lumbar spine, pelvis, and hip among conditions were analyzed using one-way repeated-measures analysis of variance, and a Bonferroni correction was conducted. There was less RA muscle activity on the WB side under the optimal crutch length condition compared with shorter and longer crutch length conditions (p.05). These findings indicate that the optimal crutch length improves the trunk muscle efficiency during crutch gait.

      • KCI등재

        Analysis of Differences in the Value of the AUDIT-K According to the Sociological Variables the Population of Neuropsychiatry Hospital Visitor

        Jong,Hyeok,Kwak,Seong,Jin,Kim,Soon,Ki,Sung,Hyeon,Wha,Im,Yu,Hee,Lee,Sang,Bong,Lee,Chan,Hyeok,Park,Hee,Jung,Cho,Deog,Hwan,Moon 한국방사선학회 2018 한국방사선학회 논문지 Vol.12 No.1

        AUDIT-K(한국형 알코올 중독 간이선별 검사법)을 이용하여 일상적으로 생활하고 있는 상당수의 잠재적인 위험 음주자들을 선별 할 수 있었으며 연령, 종교, 결혼여부, 직업, 소득음주사망 가족력, 음주시작 연령, 흡연, BMI(체질량지수)는 통계적으로 유의한 차이가 없었으며, 학력, 음주기간만 통계적으로 유의하였다. 이러한 결과는 교육을 더 받은 사람의 남성이 알코올 소비가 더 높다고 한 선행연구와 부합하는 결과를 나타내었으며 교육수준 또한 무엇을 어떻게 배웠는가에 따른 차이를 살펴 볼 필요가 있음을 시사하며, 교육에 따른 알코올 소비도 각각 다른 결과를 나타냄을 알 수 있다. 또한 나이가 적을수록 술을 많이 마시면 음주기간이 길어질 것이고 기존의 음주시작 연령에 대한 연구와 일치하는 결과가 나타났다. 본 연구에서는 음주 기간이 알코올 사용 장애의 가장 큰 요인이었으며 음주 기간을 단축하기 위한 방법으로는 음주 시작연령을 최대한 늦출 수 있는 국가 정부 제도의 대책 및 교육이 필요하다고 생각된다. Using the AUDIT-K (Korean versions of alcohol use disorders identification test), it was able to select a large number of potential danger drinkers who routinely live. There were no statistically significant differences in age, religion, marital status, occupation, family history of alcohol drinking, age at onset of alcohol use, smoking, and BMI (body mass index). However, only education and drinking periods were statistically significant. These results are consistent with the previous study, which suggests that alcohol consumption is higher among men who are educated. The level of education also suggests that there is a need to look at the differences depending on what you learned and how. Alcohol consumption by education also shows different results. Also, drinking at a young age will lead to a longer drinking period, which is consistent with previous studies on the age at onset of drinking. In this study, drinking period was the most important factor of alcohol use disorder and it is considered that measures and education of national government system which can delay drinking age as much as possible is needed as a method to shorten drinking period.

      • KCI등재

        Analysis of Differences in Fractional Anisotropy of Diffusion Tensor Images of Basal Ganglia in the Brain Gray Matter according to Smoking

        Jong Hyeok Kwak(곽종혁), Jae Beom Jeong(정재범), Bong Kyeong Son(손봉경), Soon Ki Sung(성순기), Seong Jin Kim(김성진), Dong Won Kang(강동원), Chan Hyeok Park(박찬혁), Hyeon Wha Im(임현화), Yu Hui Lee(이유희), Bong Sang Lee(이상봉), Dong hye) 한국방사선학회 2018 한국방사선학회 논문지 Vol.12 No.2

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

        The fractional anisotropy value of the basal ganglia fibers in the brain gray matter region was analyzed by Tract-Based Spatial Statics(TBSS) method after acquiring the diffusion tensor image to identify the presence or absence of brain white matter damage to smoking in male. As a result of measurement analysis, the fractional anisotropy measurement value was lower in smokers than non–smokers in all areas, and the FA value was statistically significant. smoking significantly affects all the anatomic micro structural changes in the brain gray matter and damages the nerve fiber tract. As a result, it can affects functional abnormalities related to the minute changes of the brain due to smoking. 흡연 유무의 남성을 대상으로 뇌 회백질의 손상 유무를 파악 할 수 있는 확산텐서영상을 검사하여 영상을 획득 한 후 Tract-Based Spatial Statics(TBSS)방법으로 뇌 회백질 부위의 기저핵 신경섬유로의 비등방도 FA(fractional anisotropy)값을 측정 분석한 결과 모든 영역에서 흡연자가 비흡연자보다 비등방성 측정값이 낮게 관찰되었으며 FA값은 통계적으로 유의하였다. 본 연구의 측정한 FA결과 값으로 추측하자면 즉, 흡연이 뇌 회백질 기저핵의 모든 해부학적 미세 구조성 변화에 크게 영향을 미치며 신경섬유로를 손상시키고 이와 관련된 기능적 이상에 영향을 준다고 할 수 있다.

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