• Radiation Oncology Journal
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• 제33권3호
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• pp.233-241
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• 2015

Purpose: To compare volumetric modulated arc therapy of RapidArc with robotic stereotactic body radiation therapy (SBRT) of CyberKnife in the planning and delivery of SBRT for hepatocellular carcinoma (HCC) treatment by analyzing dosimetric parameters. Materials and Methods: Two radiation treatment plans were generated for 29 HCC patients, one using Eclipse for the RapidArc plan and the other using Multiplan for the CyberKnife plan. The prescription dose was 60 Gy in 3 fractions. The dosimetric parameters of planning target volume (PTV) coverage and normal tissue sparing in the RapidArc and the CyberKnife plans were analyzed. Results: The conformity index was $1.05{\pm}0.02$ for the CyberKnife plan, and $1.13{\pm}0.10$ for the RapidArc plan. The homogeneity index was $1.23{\pm}0.01$ for the CyberKnife plan, and $1.10{\pm}0.03$ for the RapidArc plan. For the normal liver, there were significant differences between the two plans in the low-dose regions of $V_1$ and $V_3$. The normalized volumes of $V_{60}$ for the normal liver in the RapidArc plan were drastically increased when the mean dose of the PTVs in RapidArc plan is equivalent to the mean dose of the PTVs in the CyberKnife plan. Conclusion: CyberKnife plans show greater dose conformity, especially in small-sized tumors, while RapidArc plans show good dosimetric distribution of low dose sparing in the normal liver and body.

• 융복합기술연구소 논문집
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• 제2권2호
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• pp.5-12
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• 2012

Recently, peoples are suffering from various psychological disorders such as addiction, phobia, depression, and bipolar disorder. Moreover, children with ADD/ADHD and autism are increasing. Korean tends to regard the psychological disorders as taboo. Therefore, it is unusual case that the mental patient gets the psychological therapy. Virtual reality has come to the spotlight as a useful tool for the therapy due to its anonymity and easy accessibility. The therapy in the virtual reality is called cyber-therapy. Emotion of the patient is important for the treating process. The objective of this paper is to review the researches on the treatment of psychological disorders using the virtual reality and prospect the affective interaction technology for the cyber-therapy.

• 대한간호학회지
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• 제36권2호
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• pp.286-298
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• 2006

Purpose: This study was to develop an online 'alternative therapy and health promotion' class for university students and to evaluate its changes. Method: The online class was developed based on the Instructional Systems Development(ISD) model and model of Web-Based Instruction(WBI) developmental process. This was a quasi-experimental, one group pretest-posttest design. The subjects of this study were 130 students in 3 universities, and they were provided the cyber class for 16 weeks. Data was analyzed by descriptive and plural answer statistics, and paired t-test. Results: The cyber class was developed in five steps : analysis, design, data collection and reconstruction, programing and publishing, and evaluation. The results of program evaluation were positive, which included learning 3.47. system 3.57, and learning satisfaction 3.64 on the scale of 5. The posttest scores of cognition and reliability of alternative therapy were higher than pretest scores. The posttest score of health promoting lifestyle(t=-5.051, p=.000) and perceived health status(t=2.979, p=.003) were significantly higher than those of the pretest. Conclusion: These results suggest that the cyber class is a positive method in increasing a cognition, reliability of alternative therapy, and is effective to improve a health promotion lifestyle and perceived health status for the university students.

• 한국의학물리학회:학술대회논문집
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• 한국의학물리학회 2006년도 제33회 추계학술대회 발표논문집
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• pp.119-119
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• 2006

• 대한방사선치료학회지
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• 제27권1호
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• pp.79-86
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• 2015

목 적 : 치료 중에도 지속적으로 X-ray 영상을 획득하여 환자의 움직임을 보정하는 CyberKnife(Accuray Incorporated, USA) 치료 방식의 특성을 이용하여, 치료 중 환자의 움직임을 보정할 수 없는 경우 척추 전이암 정위적방사선치료의 적절한 치료 시간에 대해 고찰하고자 하였다. 대상 및 방법 : CyberKnife를 이용하여 정위적방사선치료를 받은 척추 전이암 환자 57명을 대상으로 하였다. 그 중 경추 환자는 8명, 흉추는 26명, 그리고 요추는 23 명이었다. 치료 중 획득한 X-ray 영상을 종합하여 치료 부위 별로 분류한 후, 치료 시작 시간을 기준으로 5 분마다 구간을 나누어 시간에 따른 환자의 움직임이 어떤 양상을 보이는지 분석하였다. 결 과 : 경추의 경우, 회전 방향으로 15 분 이후부터 움직임의 증가폭이 커지기 시작하였다. 흉추에서는 특별히 움직임이 증가하는 구간은 없었으나 시간에 따라 점차적으로 증가하는 추세를 보였기 때문에 대략 40 분 이후 의미 있는 값이 나올 것이라 추정된다. 요추의 경우, 치료 시작 20 분 이후 수직 이동 방향과 회전 방향으로 움직임이 크게 상승하는 것으로 나타났다. 결 론 : 치료 중 환자의 움직임을 보정할 수 없는 치료 시스템의 경우, 치료 시간은 경추의 경우 15 분, 흉추의 경우 40 분, 요추의 경우 20 분 이내가 적절한 것으로 사료된다. 만약 치료 시간이 이보다 긴 경우, 치료 중간에 추가적인 환자 정렬을 실시하거나 추가적인 PTV margin이 필요할 것으로 사료된다.

• 대한물리치료과학회지
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• 제30권3호
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• pp.91-104
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• 2023

Background: The purpose of this study is to investigate whether peer attachment serves as a positive emotional resource for children who have experienced school violence and cyber violence victimization. In addition, we aim to present alternative programs to reduce school violence and promote positive peer attachment among children. Design: We utilized data from the 13th year(2020) of the Panel Study on Korean Children for this study. Methods: The survey was conducted through a questionnaire administered by surveyors, and the total number of cases was 1,357. Results: First, the effects of school violence and cyber violence victimization experiences were confirmed. Second, it can be inferred that children with isolation in peer relationships may ultimately be more vulnerable to cyber violence victimization, as their interactions in cyberspace may also be undermined, highlighting the potential impact of social relationships on cyber violence victimization. Third, it can be observed that children with high levels of peer attachment are emotionally stable, even when exposed to school violence and cyberviolence victimization, which may enable them to regulate the degree of victimization they experience. Conclusion: School violence experience and cyber violence experience interact with each other, and in this relationship, positive peer attachment is a positive resource. Therefore, it emphasizes the importance of the relationship between friends in preventing and overcoming school violence and provides suggestions for solutions based on this understanding.

• 대한방사선치료학회:학술대회논문집
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• 대한방사선치료학회 2005년도 춘계학술대회 초록집
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• pp.33-34
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• 2005

• 대한골관절종양학회지
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• 제11권1호
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• pp.17-24
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• 2005

의학의 발달과 더불어 종양에 대한 국소치료는 광범위근치술(extended radical surgery) 로부터 기능보존술(function preserving surgery)로 발달하고 이것은 다시 최소침습술(minimal-invasive surgery)로 발전하여 왔다. 그러나 최근 들어서는 기술의 혁신적인 진보로 비침습적수술법(non-invasive surgery)이 개발되어 감마나이프(gamma knife), 사이버나이프(cyber knife), 및 하이푸나이프(HIFU knife) 등이 출현하게 되었다. 본 논문에서는 이들 중 하이푸나이프를 이용한 체외강력집속초음파치료(extracorporeal high intensity focused ultrasound therapy)에 대하여 발달사, 치료기 구조 및 치료과정, 조직학적 변화와 기전, 임상적용, 장단점 및 전망 등을 살펴보고자 한다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제30권1호
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• pp.65-68
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• 2004

CyberKnife is a stereotactic radiosurgery system which could be used to treat many tumors and lesions. It provides the surgeon unparalleled flexibility in targeting using a compact light linear accelerator mounted on a robotic arm. Advanced image guidance technology tracks patient and target position during treatment, ensuring accuracy without the use of an invasive head frame. CyberKnife with Dynamic Tracking Software is cleared to provide radiosurgery for lesions anywhere in the body when radiation treatment is indicated. It has often been used to radiosurgically treat otherwise untreatable tumors and malformations. Moreover, this instrument treats tumors at body sites, most of which are unreachable by other stereotactic systems. Compared with conventional radiotherapy, it is fundamentally different that using non-invasive, frameless, no excessive radiation exposure to normal tissue. In oral malignant neoplasm, surgical excision and radiation therapy should be tried first, additionally chemotherapy could be considered. However, after failure of conventional therapies, patients had poor systemic condition and surgical limitation. So, CyberKnife could be a suitable therapy. A 49 years man was referred in recurred mandibular cancer treated by radiotherapy. The tumor was considered inoperable, because of extensive invasion and was not expected to good response to conventional therapies. We experienced a case of CyberKnife after 4 cycle chemotherapies, so we report it with review of literature.

• 융합정보논문지
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• 제8권1호
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• pp.131-138
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• 2018

본 연구는 완전 몰입형 가상현실 장비의 사용으로 발생하는 사이버 멀미로 인해 야기된 동적균형의 변화가 낙상을 일으키는지 알아보고자 하였다. 연구의 취지를 이해하고 자발적으로 참여에 동의한 균형감각이 정상인 20대 성인남녀 39명을 대상으로 VR착용 전과 후의 멀미지수, 심박수를 측정하고 Biorescue의 안정성 한계 검사를 실시하였다. 가상현실 체험을 위한 도구로 Samsung gear VR을 이용하였고, To the Homeland 라는 게임을 20분간 실시하였다. VR착용 후 동적균형훈련이 약간 감소하였으나 통계적으로 유의한 차이는 없었다. VR착용 전과 후의 멀미변화는 멀미설문조사를 통해 통계적으로 유의한 차이가 있음을 알 수 있었다. 심박수 변화는 Pulse Oximeter을 이용하여 심박수 증가를 보여 통계적으로 유의한 차이가 있었다. 일반인을 대상으로 완전 몰입형 가상현실 체험은 멀미가 유발되나 동적균형문제에는 다소 영향을 미치지 못하였다. 그렇기 때문에 VR 착용으로 인한 사이버멀미는 균형감소와 낙상을 유발시키지 않는다.