• Title/Summary/Keyword: Image guidance

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Usability of 2D/2D Match for Image Guided Radiotherapy (IGRT) of Prostate Cancer with Fiducial Markers (전립선 암 환자의 영상유도 방사선 치료 시 Fiducial Marker를 이용한 2D/2D Match의 유용성에 대한 연구)

  • Bae, Sun-Myung;Yang, Oh-Nam;Song, Heung-Kwon;Back, Geum-Mun
    • The Journal of Korean Society for Radiation Therapy
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    • v.22 no.1
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    • pp.19-24
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    • 2010
  • Purpose: To study the efficacy of marker match with using kilovoltage (KV) X-ray among multiple image guidance that referring tree fiducial marker in radiation therapy for prostate cancer patients. Materials and Methods: KV two-dimantional images (anterior-posterior, right-left) and cone-beam CT volumetric images were acquired after setup for patients with three fiducial markers. Compare the position of the fiducial marker of reference plan computed tomography (CT) and of KV, CBCT images; then decide the shift score of X, Y, and Z. This study executed 5 times on 10 patients and analyzed the shift value. Results: In the radiation therapy using fiducial marker, The function of marker match showed the same direction tendency as the CBCT, and showed X, Y, Z difference of about 0.6, 0.7, and 0.8 (unit: mm). Conclusion: Comparing to this, the result of shift value using 2D marker match showed less than 1.0 mm difference. The function of marker match is considered more useful in time-wise and effective dose rather than CBCT. Therefore, Both methods are used to treat patients for prostate cancer.

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Accuracy and radiation exposure from image-guidance in Tomotherapy Hi-Art System (토모테라피 Hi-Art System의 영상유도 정확성 평가와 환자 피폭에 관한 연구)

  • Jang, Jae-Uk;Lim, Hyun-Soo;Han, Man-Seok;Kim, Yong-Kyun;Jeon, Min-Cheol
    • Journal of Digital Convergence
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    • v.11 no.10
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    • pp.577-584
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    • 2013
  • IGRT(Image Guided Radiation Therapy) in radiation therapy is a very useful technique in order to increase setup of patient and position reproducibility. Tomotherapy can increase accuracy of setup to take IGRT by MVCT, but it be for verified accuracy of Image guided, and MVCT occurs the exposure of patient. Through this study, IGRT accuracy of Tomotherapy is very accurate within 1.0mm. When MVCT using Tomotherapy phantom for QA, QC be taken, exposure dose is Fine(2mm Slice thickness) 3cGy, Normal(4mm Slice thickness) 1.5cGy, Corse(6mmSlice thickness) 1.0cGy. Measurement value of spatial resolution using AAPM CT performance phantom did't cause a big difference. As a result, ability of IGRT in Tomotherapy is very accurate. While obtaining image for IGRT, we should minimize expose range because patient's be exposed to radiation. We should make an effort to do accurate radiation therapy to minimize exposure of patient by selecting the appropriate thickness of MVCT depending on patient's body and treat area.

The Design and Implementation Android OS Based Portable Navigation System For Visually Impaired Person and N : N Service (시각 장애인을 위한 Android OS 기반의 Portable Navigation System 설계 및 구현 과 N : N Service)

  • Kong, Sung-Hun;Kim, Young-Kil
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2012.05a
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    • pp.327-330
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    • 2012
  • In the rapid growth of cities, road has heavy traffic and many buildings are under constructions. These kinds of environments make more difficulty for a person who is visually handicapped to walk comfortable. To alleviate the problem, we introduce Android based Portable Navigation System to help walking for Visually Impaired Person. It follows, service center give instant real time monitoring to visually impaired person for their convenient by this system. Android based Portable Navigation System has GPS, Camera, Audio and WI-FI(wireless fidelity) available. It means that GPS location and Camera image information can be sent to service center by WI-FI network. To be specific, transmitted GPS location information enables service center to figure out the visually impaired person's whereabouts and mark the location on the map. By delivered Camera image information, service center monitors the visually impaired person's view. Also, they can offer live guidance to visually impaired person by equipped Audio with live talking. To sum up, Android based Portable Navigation System is a specialized navigation system that gives practical effect to realize more comfortable walking for visually impaired person.

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Assembling Geographic Information with SPOT-5 Satellite Imagery : A Case Study on North Korea (SPOT-5 위성영상을 이용한 북한지역 지리정보 구축에 관한 연구)

  • Sakong, Ho-Sang;Park, Jin-Hyeong
    • Journal of the Korean Association of Geographic Information Studies
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    • v.8 no.4
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    • pp.134-142
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    • 2005
  • In building geographic information for North Korea, we proposed the method of using SPOT-5 image, designed geographic information layers, and inspected the location accuracy. Basically this study is similar to existing method in which uses GCPs to build geographic information from SPOT-5 satellite imagery. However, this study adopted a different method of GCP acquisition. The GCP used in this study is a triangulation point which was made at Japanese imperialism eras. The location accuracy error was 8.755 meters horizontally, which satisfied the tolerance of 17.5 meters in the 1:25,000 scale public survey guidance. In conclusion, we suggest that geographic information for North Korea can be built from SPOT-5 images with the triangulation point made in Japanese imperialism times.

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Guidelines for Cardiovascular Magnetic Resonance Imaging from the Korean Society of Cardiovascular Imaging (KOSCI) - Part 3: Perfusion, Delayed Enhancement, and T1- and T2 Mapping

  • Im, Dong Jin;Hong, Su Jin;Park, Eun-Ah;Kim, Eun Young;Jo, Yeseul;Kim, Jeong Jae;Park, Chul Hwan;Yong, Hwan Seok;Lee, Jae Wook;Hur, Jee Hye;Yang, Dong Hyun;Lee, Bae-Young
    • Investigative Magnetic Resonance Imaging
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    • v.24 no.1
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    • pp.1-20
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    • 2020
  • This document is the third part of the guidelines for the interpretation and post-processing of cardiac magnetic resonance (CMR) studies. These consensus recommendations have been developed by a Consensus Committee of the Korean Society of Cardiovascular Imaging (KOSCI) to standardize the requirements for image interpretation and post-processing of CMR. This third part of the recommendations describes tissue characterization modules, including perfusion, late gadolinium enhancement, and T1- and T2 mapping. Additionally, this document provides guidance for visual and quantitative assessment, consisting of "What-to-See," "How-To," and common pitfalls for the analysis of each module. The Consensus Committee hopes that this document will contribute to the standardization of image interpretation and post-processing of CMR studies.

Nutrition Survery of Female Middle School Students in Urban and Rural Areas of Inchon (인천 도시 및 농촌 지역 여중생의 영양실태조사)

  • 권우정;장경자;김순기
    • Korean Journal of Community Nutrition
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    • v.6 no.3
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    • pp.495-506
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    • 2001
  • This study was conducted to investigate the nutrient intake, dietary and weight control behaviors and iron deficiency of adolescent girls. The subjects were 216 female middle school students living in urban and rural areas of Inchon. Thin cross- sectional study was conducted by questionnaires and data were analyze by SAS program. Nutrient intakes collected from 3 day-recalls were analyzed by the Computer Aided Nutritional Analysis Program(CAN-pro). The mean height, weight. BMI and obesity index for the subjects were 158.2 cm, 51.1kg, 20.4 and -5.3 % in urban students and 155.9 cm, 49.3 kg 21.1 and -8.2% in rural students, respectively. Easting blood samples were obtained and analyzed for iron nutritional status. The mean obesity index of the urban students was higher than that of the rural students. The proportion of the overweight group was higher in urban students compared to rural students, However, over 10% of both area students belonged to the low weight group, respectively. Most students of both areas skipped breakfast and the main reason was on appetite and lack of time. Urban students were more concerned with body image. The nutrients which showed a lower mean intake as percentile of RDA were Ca, iron, vit A an Vit B$_2$ and most nutrient intakes of urban students were significantly higher compared to those of rural students. These results indicate that nutrient intakes in the female middle school students were considerably lower than the RDA. Also they had undesirable food habits and lower self-satisfaction with their body image, There were significant differences in the mean MCV, TIBC and serum ferritin between urban and rural area subjects. Mean Hb, Hct, MCH, MCHC and TS, bowaver, were not significantly different. Prevalence of iron deficiency greatly varied by indices from urban(11.5%) and rural (8.7%) when judged by Hb to urban(23.1) and rural (23.3%) by serum ferrition. Therefore, proper nutrition education is required for good nutrition desirable food habits, weight control, and guidance for iron deficiency in anemic female of adolescents.

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Ultrasonographic Guidance in Acute Achilles Tendon Rupture (급성 아킬레스 건 파열에서의 초음파 이용)

  • Lee, Tae-Hoon;Lee, Hee-Dong;Kim, Hak-Jun
    • The Journal of Korean Orthopaedic Ultrasound Society
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    • v.8 no.1
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    • pp.26-30
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    • 2015
  • There are many traumatic foot and ankle problems in orthopaedic fields. Though it is not life-threatening problems, a delay in accurate diagnosis and treatments can danger limb function and therefore correct diagnosis can prevent long-term complications. Achilles tendon rupture is relatively common injury for active sports people. Ultrasonography is cost-effective, irradiation -free, effective for evaluation of soft tissues and dynamic analysis. It has been growing importance in Achilles tendon rupture. Ultrasonography is a diagnostic tool in Achilles tendon rupture. Physical examination and patient history is needed to diagnose Achilles tendon without image, but it is missed up by 20% in private clinic. Discontinuity of normal fibrillar architecture seen on an ultrasonographic image is diagnostic for Achilles tendon rupture, and can be accentuated by the performance of dorsi-flexion and plantar flexion, while observing in real time. And ultrasonography is a reliable method for serial observation after surgical treatment or conservative treatment.

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A Study on the Copyright Contents of Medical Library Web Site (국내 의과대학도서관 웹사이트에 나타난 저작권관련사항에 관한 연구)

  • Choi, Hung-Sik;Yoon, Mi-Hui
    • Journal of Korean Library and Information Science Society
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    • v.37 no.4
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    • pp.371-389
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    • 2006
  • The purpose of this study is to induce a librarian to construct databases lawfully and the user with a copyright and the fair use. Based on information from web sites, the domestic medical libraries(32) were investigated for analyzing how to deal with copyright problems. The results show that only 28% of the medical libraries provide users with information on copyright at their web site. The terminology used was different among libraries. 44.4% of the libraries use 'copyright law' and 33.3% 'copyright' The terminology appeared at the 'notice' menu and 'library guidance' menu. The detail part of copyright contents was shown at 'the data copy and transmission', 'full text DB use', 'thesis and dissertation service', 'FAX/file transfer', 'Image(Ariel)', and 'interlibrary loan'. In general, there was a necessity to the correct understanding of the copyright and fair use.

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Factors Affecting Plastic Surgery Addiction Tendency Among Undergraduate Women (여대생의 미용성형 중독성향에 영향을 미치는 요인)

  • Kim, Young A;Cho Chung, Hyang-In
    • Journal of Digital Convergence
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    • v.12 no.12
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    • pp.621-631
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    • 2014
  • The purpose of this study was to examine influencing factors on plastic surgery addiction tendency. The participants, 223 undergraduate women, completed the ACSS, SATAQ, and MBSRQ. Data were collected from May, 2014 and analyzed using descriptive statistics, chi-square test, ANOVA, logistic regression analysis. Each of variables related to plastic surgery were analyzed between positive expectation group, addiction risk group, or addiction group compared to stable group. The prevalences of stable, positive expectation, addiction risk, and addiction group were 21.1%, 35.0%, 32.7%, and 11.2%, respectively. 45.7% had at least one personal plastic surgery. Personal experience of plastic surgery, high levels of ACSS (Consider), high levels of SATAQ (Internalization), and high levels of MBSRQ (Appearance Evaluation) were all associated with plastic surgery addiction tendency. The results of this study suggest that prevention of early plastic surgery, sociocultural influence and body image disturbances as well as safe guidance for plastic surgery are important in preventing the plastic surgery addiction.

A Study on Fashion Sensibility of adult Women's Town Wear (성인여성의 옷차림에 나타난 패션감성에 관한 연구)

  • Lee, Eun-Rung;Lee, Kyoung-Hee
    • Fashion & Textile Research Journal
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    • v.9 no.4
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    • pp.380-390
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    • 2007
  • The purpose of this study(Part I) was to provide the guidance in more objective and proper clothing design and wearing rule to make good image making by analysis of fashion sensibilities about adult women's town wear in unlimited circumstance. The specific objectives were; 1)to investigate about fashion sensibility of women's town wear at season 2)to investigate about fashion sensibilities of women's town wear of properties which are age, marriage or not, job, average income per month, and schooling. 3)to compare fashion sensibility between Good and Bad women's town wear. The collected photos at shopping mall, department stores, and churches(S/S, F/W:2004.4.28~2005.5.1) were prepared removing face and background that can affect in estimator and attached on gray board. To investigate fashion sensibilities, the stimulus were 80 photos('good':40, 'Bad':40). The questionnaire consisted of bi-polar 25 pairs adjective scale of fashion sensibilities was distributed 60 female(20's~40's) living in Busan. The data were analyzed by t-test, ANOVA, and Scheffe. The results of this study are summarized as follows; For fashion sensibilities at 'Good' and 'Bad' wear, the variances(season, age, marriage or not, job, average income per month, and schooling) are important. Especially, the fashion sensibility at 30's women are very unique and importance age zone to catch both young women's fashion sensibility and old women's fashion sensibility, Through that age zone, we could read women's various fashion sensibility and prospect complicate consumers' fashion mind. This study result will be utilized in the clothing design for target age zone of women's town wear, database of wearing rule and good image making, and planning fashion marketing strategies.