• 여성건강간호학회지
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• 제26권3호
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• pp.240-249
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• 2020

Purpose: This study was conducted to investigate the effects of an education program using a high-fidelity simulator of labor and delivery on nursing knowledge, critical thinking, and clinical performance among nursing students who had not yet experienced clinical practicum. Methods: The development of a 5-week maternity nursing education programs using high-fidelity simulators included modules containing case-oriented scenarios, knowledge, and skills required for maternity care. A randomized controlled study was conducted to verify the effects of the developed program. Data were collected from October 21 to December 9, 2019. The experimental group (n=36) participated in a 5-week high-fidelity simulation program on care for the woman in labor, whereas the control group (n=36) received standard education as lecture and practice with delivery model. The collected data were analyzed using descriptive statistics (frequency, percentage, mean, and standard deviation), the Chi-square test, Fisher exact test, and t-test. Results: For participants who received education using the high-fidelity simulation program, nursing knowledge (t=2.33, p=.011), critical thinking (t=3.73, p<.001), and clinical performance (t=2.53, p=.006) were significantly higher than in the control group. Conclusion: Even for students with no clinical experience, high-fidelity simulation-based nursing education was effective in improving nursing knowledge, critical thinking, and clinical performance among nursing students. Nurse educators will be able to use this high-fidelity simulator effectively, especially in situations where direct clinical practicum may not be feasible.

• 한국융합학회논문지
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• 제9권11호
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• pp.161-167
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• 2018

치과병원에서 임상가가 시행하는 임상술기는 환자들의 위험요소를 제거하는데 중요한 요소이다. 대학에서 많은 임상술기 교육이 이루어지고 있지만, 실습실과 기자재의 특수성으로 인한 제약 때문에 반복적인 연습에 한계가 있다. 특히, 치과방사선 촬영은 다양한 구내 촬영법이 존재한다. 이에 대한 숙달은 정확한 방사선 사진 획득에 중요한 요소이기 때문에, 임상전단계에서의 반복 연습은 매우 중요하다. 그러나 최근 원자력법 개정으로 인체의 방사선 피폭량에 제한이 있기 때문에, 반복적인 실습에 어려움이 있어, 임상역량이 약화되고 있다. 이러한 한계점을 극복하기 위해서, 증강현실 기술을 활용하여 시간과 공간의 제약을 받지 않으며, 촬영법에 대한 반복 연습이 가능하고, 자기주도식 학습이 가능한 구내방사선 촬영 임상시뮬레이터를 개발하였다. 이를 통해, 치과위생사의 구내 방사선 촬영 기술을 숙달하고 임상실무역량을 향상하는데 기여하고자 한다.

• 한국의학물리학회지:의학물리
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• 제30권4호
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• pp.160-166
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• 2019

This study examined the clinical use of two newly installed computed tomography (CT) simulators in the Department of Radiation Oncology. The accreditation procedure was performed by the Korean Institute for Accreditation of Medical Imaging. An Xi R/F dosimeter was used to measure the CT dose index for each plug of the CT dose index phantom. Image qualities such as the Hounsfield unit (HU) value of water, noise level, homogeneity, existence of artifacts, spatial resolution, contrast, and slice thickness were evaluated by scanning a CT performance phantom. All test items were evaluated as to whether they were within the required tolerance level. CT calibration curves-the relationship between CT number and relative electron density-were obtained for dose calculations in the treatment planning system. The positional accuracy of the lasers was also evaluated. The volume CT dose indices for the head phantom were 22.26 mGy and 23.70 mGy, and those for body phantom were 12.30 mGy and 12.99 mGy for the first and second CT simulators, respectively. HU accuracy, noise, and homogeneity for the first CT simulator were -0.2 HU, 4.9 HU, and 0.69 HU, respectively, while those for second CT simulator were 1.9 HU, 4.9 HU, and 0.70 HU, respectively. Five air-filled holes with a diameter of 1.00 mm were used for assessment of spatial resolution and a low contrast object with a diameter of 6.4 mm was clearly discernible by both CT scanners. Both CT simulators exhibited comparable performance and are acceptable for clinical use.

• Perspectives in Nursing Science
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• 제9권2호
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• pp.111-118
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• 2012

Purpose: This study investigated the effects of simulation-based nursing education (for the care of congestive heart failure patients) on self-directed learning competency, clinical knowledge and problem-solving ability among nursing students. Methods: A one-group, pre-post design was utilized with 87 nursing students as the subjects. The scenario of simulation-based nursing education was created using a high-fidelity patient stimulator, and consisted of four states ((1) assessment, (2) reviewing laboratory data and administering medications and treatments, (3) managing increased dyspnea and decreased urine output, and (4) handling the "getting better" state). The simulation-based nursing education included orientation, team-based learning, team-based practice, and debriefing. The data were analyzed using descriptive statistics, Pearson's correlation coefficients and paired t-tests. Results: The scores on the factors for self-directed learning competency (t=-2.57, p= .011), clinical knowledge (t=-6.85, p<.001), and problem-solving ability (t=-3.01, p= .003) increased significantly after the education intervention. Conclusion: Simulation-based nursing education is useful in improving self-directed learning competency, clinical knowledge, and problem-solving ability in nursing students.

• 한국운동역학회지
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• 제24권3호
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• pp.189-199
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• 2014

The purpose of this study was to compare pflugbogen's biomechanical characteristics between on the ski simulator and snowed ski slope to develop interactive ski simulator. Nine ski instructors(sex: male, age: $29.6{\pm}5.4yrs$, height: $176.0{\pm}5.6cm$, body mass: $76.0{\pm}14.0kg$) belong to Korean Ski Instructors Association participated in this research. 24 Infrared cameras for snowed ski slope experiment and 13 infrared camera for ski simulator experiment were installed near by path of pflugbogen. The participants did pflugbogen on the snowed ski slope and the ski simulator both. During the experiment, the participants weared motion capture suit with infrared reflective makers on it, and plantar pressure sensors in ski boots, so that ski motion and plantar pressure data were collected together. Displacement of COG(center of gravity) movements, trunk flexion/extension angle, adduction/abduction angle, and plantar pressure data were significantly different between on the simulator and ski slope. However, percentage of time of COG movement in the phases during medial/lateral and anterior/posterior movement were not significantly different. Findings indicate that the difference between two groups occurred because the ski simulator's drive mechanism is different from ski motion on the slope. In order to develop the ski simulator more interactively for pflugbogen, the ski simulator's drive mechanism need to be reflected 3D motion data of pflugbogen on the slope that were purposed in this research.

• 한국콘텐츠학회논문지
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• 제15권9호
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• pp.403-410
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• 2015

MRI는 1970년을 시작으로 자장 세기와 수신 채널 수, 촬영시간의 단축 등으로 많은 발전을 해 오고 있으며, 병원 또한 각종 전산 시스템과 무선 네트워크의 발전으로 인해 각종 진료 영상장비로부터 디지털 영상을 획득, 저장 및 관리하게 되었다. 하지만, 국내 대학들은 고가의 실습장비와 유지비로 인하여 자체에서는 실습을 하지 못하고 있으며 임상 실습에 의존하고 있다. 이에 윈도우즈 운영체제의 PC상에서 MR 환자의 검사 프로그램을 개발하여 학생들이 많이 다루어 봄으로써 임상에서 근무하기 전 많은 도움을 주고자 하였다. MRI Simulator의 Relational Database 설계는 각 기능과 자료의 특성에 따라 7개의 Table로 구성하였으며, 환자정보 설계는 임상에서의 환자등록 방법을 기준으로 각 단계별 기능을 분류 하였다. 또, 검사를 위한 기본 정보 설정을 가정하여 각각의 설정 값 및 그 내용을 분류 하였다. 실행 단계별 메뉴는 한 눈에 볼 수 있도록 왼편에 배열을 하였다. 환자 등록은 이름, 성별, 고유번호, 생년월일, 몸무게 등 기초정보를 입력하고, 환자의 자세와 검사 방향을 설정하였다. 또, 검사부위와 Pulse Sequence을 나열하고, 선택하도록 분류하였다. 그리고 Protocol 이름과 부가 인자들를 입력할 수 있도록 하였다. 최종 화면은 검사 영상과 환자 정보, 검사 조건 등을 확인할 수 있도록 설계하였다. 이 프로그램을 통해 환자정보의 입력과 검사조건의 변경을 학습해봄으로써 이론과 실습을 통한 용어의 이해에 많은 도움을 주어 실제 임상근무에서 배우는 시간을 단축시킬 수 있다.

• The Korean Journal of Physiology and Pharmacology
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• 제23권5호
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• pp.295-303
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• 2019

A heart simulator, UT-Heart, is a finite element model of the human heart that can reproduce all the fundamental activities of the working heart, including propagation of excitation, contraction, and relaxation and generation of blood pressure and blood flow, based on the molecular aspects of the cardiac electrophysiology and excitation-contraction coupling. In this paper, we present a brief review of the practical use of UT-Heart. As an example, we focus on its application for predicting the effect of cardiac resynchronization therapy (CRT) and evaluating the proarrhythmic risk of drugs. Patient-specific, multiscale heart simulation successfully predicted the response to CRT by reproducing the complex pathophysiology of the heart. A proarrhythmic risk assessment system combining in vitro channel assays and in silico simulation of cardiac electrophysiology using UT-Heart successfully predicted drug-induced arrhythmogenic risk. The assessment system was found to be reliable and efficient. We also developed a comprehensive hazard map on the various combinations of ion channel inhibitors. This in silico electrocardiogram database (now freely available at http://ut-heart.com/) can facilitate proarrhythmic risk assessment without the need to perform computationally expensive heart simulation. Based on these results, we conclude that the heart simulator, UT-Heart, could be a useful tool in clinical medicine and drug discovery.

• Radiation Oncology Journal
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• 제16권1호
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• pp.81-86
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• 1998

목적 : Broad-beam Simulator-CT 개발을 위한 예비연구로서 통상의 모의 치료 영상에서 축상면, 시상면, 관상면 영상을 구현하려 하였다. 대상 및 방법 : 120kVp, 2mAs 동일 조건에서 갠트리 각도를 $4^{\circ}$ 간격으로 90장의 필름을 얻어 입체적인 Filtered back-projection을 시도하였다 외곽선을 찾아 제거하였고, 산란선 성분을 Deconvolution 방법으로 제거하여 좋은 영상을 얻도록 하였다. 결과 : 이 방법으로 축상면, 시상면, 관상면 영상을 얻었으며 각 방향에 대해 동일한 분해능을 갖았다. 그러나 영상의 질은 대단히 나빴다. 결론 : Broad-beam으로 된 CT 영상을 구현할 수 있었다. 이를 위하여 산란선 성분의 Deconvolution이 필요하였으며, 입체적인 back-projection을 실시하였으므로 축상, 시상, 관상 모든 방향에 대해 동일한 분해능을 갖고 있어서 DRR 등 Simulator-CT에 응용할 수 있음을 알 수 있었다. 그러나 실용적인 임상응용을 위해서는 영상의 질 개선이 필요하였다.

• Clinical Endoscopy
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• 제56권5호
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• pp.604-612
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• 2023

Background/Aims: We developed a new endoscopic submucosal dissection (ESD) simulator and evaluated its efficacy and realism for use training endoscopists. Methods: An ESD simulator was constructed using polyvinyl alcohol hydrogel sheets and compared to a previous ESD simulator. Between March 1, 2020, and December 30, 2021, eight expert endoscopists from three different centers analyzed the procedure-related factors of the simulator. Five trainees performed gastric ESD exercises under the guidance of these experts. Results: Although the two ESD simulators provided overall favorable outcomes in terms of ESD-related factors, the new simulator had several benefits, including better marking of the target lesion's limits (p<0.001) and overall handling (p<0.001). Trainees tested the usefulness of the new ESD simulator. The complete resection rate improved after 3 ESD training sessions (9 procedures), and the perforation rate decreased after 4 sessions (12 procedures). Conclusions: We have developed a new ESD simulator that can help beginners achieve a high level of technical experience before performing real-time ESD procedures in patients.

• 대한의용생체공학회:의공학회지
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• 제24권4호
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• pp.363-367
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• 2003

인공무릎관절의 수명에 직접적인 영향을 주는 인자는 접촉면에 대한 접촉면적과 압력분포이다 따라서. 이에 대한 실험적인 평가가 필요하였고 knee simulator 혹은 K-scan sensor를 포함한 시스템과 같은 많은 연구가 진행되어 왔다. 그러나 지금까지 보행주기에 따른 연속적인 인공관절 운동에 대한 접촉면의 압력분포를 실시간으로 분석한 연구는 미흡하다 따라서 본 연구의 목적은 보행주기를 모사하는 simulator와 I-scan을 이용하여 연속적인 동작에 따른 접촉면의 압력분포를 분석함에 있다. 본 연구의 목적을 이루기 위해서 생체내 인공관절 환경을 정확히 표현할 수 있는 knee simulator를 제작하였다. 네 방향의 자유도를 갖고 있는 본 simulator는 soft tissue의 기능을 포함하고 있고 PC Program을 통하여 압축하중과 femoral component의 굴곡각을 조절할 수 있다. 본 시스템의 I-scan sensor는 보행주기에 따른 압력분포를 분석할 수 있다. 보행주기에 대한 압력분포는 압축하중곡선에 따라 주요하게 변화함을 알 수 있고 운동성에 영향을 쿠는 압력중심의 위치도 변한다는 것을 알 수 있다. 따라서 본 연구에서 제작한 knee simulator는 보행주기 같은 특정의 운동정보를 이용하여 접촉면의 압력분포 및 운동성 같은 기계적 성능을 평가할 수 있고 형상 설계를 위한 기초 자료를 제공할 수 있다.