• 대한방사선기술학회지:방사선기술과학
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• 제44권4호
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• pp.327-333
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• 2021

Magnetic resonance imaging(MRI) uses strong magnetic field to image the cross-section of human body and has excellent image quality with no risk of radiation exposure. Because of above-mentioned advantages, MRI has been widely used in clinical fields. However, the noise generated in MRI degrades the quality of medical images and has a negative effect on quick and accurate diagnosis. In particular, examining a object with a detailed structure such as brain, image quality degradation becomes a problem for diagnosis. Therefore, in this study, we acquired T2 weighted 3D data of multiple sclerosis disease using BrainWeb simulation program, and used quantitative evaluation factors to find appropriate slice thickness among 1, 3, 5, and 7 mm. Coefficient of variation and contrast to noise ratio were calculated to evaluate the noise level, and root mean square error and peak signal to noise ratio were used to evaluate the similarity with the reference image. As a result, the noise level decreased as the slice thickness increased, while the similarity decreased after 5 mm. In conclusion, as the slice thickness increases, the noise is reduced and the image quality is improved. However, since the edge signal is lost due to overlapped signal, it is considered that selecting appropriate slice thickness is necessary.

• Journal of Korean Biological Nursing Science
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• 제18권1호
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• pp.60-67
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• 2016

Purpose: The purpose of this study was to investigate the disease-related knowledge, stress and quality of life for the patients with varicose veins. Methods: Data were collected via questionnaire from 138 patients with varicose veins in C University Hospital in Korea from November in Korea 2012 to August 2013. Results: Knowledge of the symptoms and diagnosis was the lowest. The scores from patients with disease-related knowledge tended to be low for both subjects over the age of 60 and subjects with low education (less than high school). The score for stress over complications was the highest. The level of stress is higher for women, subjects without spouses, subjects with higher severity of disease and patients who had been taking hormones in the past or are still taking hormones. The disease-related quality of life tended to be lower for women and subjects without spouses. 21% of the variance in quality of life was explained by the level of disease-related stress, disease severity and knowledge. Conclusion: Education and the management of nurses to improve disease-related knowledge for patients with varicose veins is highly recommended. Intervention, by reducing stress, is necessary to improve the quality of life for women, subjects without spouses, and subjects with higher severity of the disease.

• 대한간호학회지
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• 제44권1호
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• pp.108-117
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• 2014

Purpose: The purpose of the study was to identify degrees of pain, menopause symptoms, and quality of life, and to identify factors influencing quality of life of patients with breast cancer who were on hormone therapy. Methods: A cross-sectional survey design was utilized. Data were collected using questionnaires from 110 patients with breast cancer who had been on hormone therapy for 3 months or more and were being treated at a university hospital in Seoul. Data were analyzed using ${\chi}^2$-test, t-test, ANOVA, Pearson correlation coefficient and multiple linear regression. Results: Mean age of the participants was 53.56 (SD=6.67) and 54 (51.4%) had stage 0 or I at the time of diagnosis. Most of the participants reported having pain and menopause symptoms (88.2% and 95.5% respectively). The mean score for quality of life was $87.84{\pm}21.17$. Pain, menopause symptoms and quality of life had strong correlations with each other (p<.005). Quality of life was explained by menopause symptoms (${\beta}$= -.71), economic status (${\beta}$=.20) and occupation (${\beta}$=.16). Conclusion: The results of the study suggest that menopause symptoms should be incorporated into oncologic nursing care to improve quality of life of patients with breast cancer on hormone therapy.

• 지역사회간호학회지
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• 제32권3호
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• pp.243-253
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• 2021

Purpose: The purpose of this study is to identify factors affecting the urinary incontinence (UI) prevalence and the quality of life among elderly adult women who are subject to home visiting healthcare services. Methods: A cross-sectional study was conducted with 400 women aged 60 or over who were registered for home health care services at one health center in Gangwon-do. Data were collected using a structured questionnaire consisting of UI severity, UI type, and the quality of life. The UI severity was assessed using International Consultation of Incontinence Questionnaire-Short Form (ICIQ-SF), the quality of life using Incontinence Quality of Life (I-QOL), and type of UI using Questionnaire for Urinary Incontinence Diagnosis (QUID). The data were analyzed by using x² test, independent t-test, one-way ANOVA, Pearson's Correlation, binary logistic, and multiple lineal regression. Results: The prevalence of UI is 51.7%. The mean score of ICIQ-SF was 9.70±4.04 for women with UI and 0.04±0.51 for women without UI (t=-33.67, p<.001). As the frequency of day time urination (OR=1.34), the subjective health status (OR=1.45), and the educational status (OR=0.90) were higher, the risk of UI prevalence was the higher. The factors affecting I-QOL were ICIQ-SF score, mixed UI, subjective health status, and nighttime urination (adjusted R²=.61). Conclusion: The results of this study showed that UI severity, mixed UI, subjective health status, and day time urination affected the quality of life. It suggests that the assessment for the severity and type of UI be needed to prevent UI or improve the quality of life of UI vulnerable elderly adult women.

• 정보처리학회논문지:소프트웨어 및 데이터공학
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• 제12권6호
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• pp.243-250
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• 2023

흉부 X-ray 영상은 폐와 심장을 검사하는 방사선 검사이며 특히, 폐 질환을 진단하는 데 널리 사용되고 있다. 이러한 흉부 X-ray의 품질은 의사의 진단에 영향을 줄 수 있으므로 품질을 평가하는 과정이 필수적으로 거쳐야 하는데, 이 과정은 영상의학과 전문의의 주관이 개입될 수 있고, 수작업으로 이루어지기 때문에 많은 시간과 비용이 소모된다. 또한, 이러한 품질평가는 X-ray 영상의 특징과 사용 목적에 따라 일반적인 품질평가와는 다른 평가 요소가 필요하다. 따라서 본 논문에서는 X-ray 영상에서 검출되는 장기의 해상도, ,해부학적인 구조, 균형 등을 고려하여 임상 현장에서 사용되는 흉부 X-ray 영상 화질 평가 가이드라인을 적용하여 품질요소를 5가지(인공음영, 포함범위, 환자자세, 흡기정도, 그리고 투과상태)로 나누고 이를 자동화하는 도구를 제안한다. 제안하는 도구는 수작업으로 품질평가를 진행하는 본래의 방식 대비 소요 시간과 비용을 줄여주고, 더 나아가 흉부 X-ray를 이용한 학습 모델 개발에 높은 품질의 학습데이터를 선별하는 과정에도 사용될 수 있다.

• 대한치위생과학회지
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• 제5권2호
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• pp.73-83
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• 2022

Background: This study was aimed at reducing depression and improving the quality of life and oral health of the elderly Koreans by elucidating the effect of depression on their life quality and oral health. Methods: Original data from the 8th National Health and Nutrition Survey (2019) were analyzed and implemented. The elderly (age≥65years) Koreans were enrolled. The oral health status was determined using the Decayed, Missing, Filled Teeth (DMFT) index and subjective self-report. The quality of life was quantified as the sum of score of each item in the Euro Qol-5 dimension (EQ-5D) and Health-related Quality of Life Instrument with 8 Items (HINT-8). The t-test, one-way analysis of variance, correlation analysis, and multiple regression analysis were performed to statistically compare the quality of life, oral health status, and oral health status according to the depression status. Results: EQ-5D and HINT-8 scores differed significantly with the history of depression, current depression, stress perception, depression for 2 weeks, and annual suicidal intention (p≤0.05). The DMFT index score differed significantly with the depression diagnosis and depression for 2 weeks (p≤0.05). EQ-5D, HINT-8, and DMFT index differed significantly with all oral health behavior variables (p≤ 0.05). Conclusions: The results of this study could serve as a basis to formulate oral health programs for the elderly to reduce depression and improve the quality of life.

• 한국산학기술학회논문지
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• 제13권8호
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• pp.3779-3784
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• 2012

산업체 공정의 실시간 공정 모니터링과 진단은 생산 제품의 품질과 안전을 보장하는데 반드시 필요한 활동들의 하나이다. 그중에서 공정 진단은 공정에 발생된 특정 이상상황의 원인을 밝혀내는 것으로서 조업자들이 이상상황의 근본원인을 보다 효과적으로 도출하는데 도움을 줄 수 있다. 본 논문에서는 비선형 KFDA 기법과 데이터 전처리기법을 이용한 이상원인 진단방법을 적용하고 이의 진단 성능을 기존 선형 기법에 기반한 PCA 진단방법과 비교한다. 실제 공정을 모사한 Tennessee Eastman 공정 시뮬레이터의 공정 데이터를 통한 사례연구를 수행한 결과 기존 선형 진단 방법론 대비 신뢰할 수 있는 진단 결과를 얻을 수 있었다.

• Journal of Korean Biological Nursing Science
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• 제15권4호
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• pp.264-271
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• 2013

Purpose: The purpose of this study was to analyze the symptoms of allergic rhinitis among university students and assess their quality of life (QOL) in order to establish an effective program for university students with allergic rhinitis. Methods: The data were collected in May, 2012 in a university school health center. The collected data were analyzed in terms of frequency, percentage and mean for the symptom types and QOL among 131 university students with allergic rhinitis. An independent t-test was conducted to determine differences in QOL according to general and disease related characteristics. Results: Symptoms were reported in the following order: nasal obstruction, rhinorrhea, sneezing, and nasal itching respectively. The mean score of QOL of the participants was 2.24 (5 point). Nasal symptoms such as rhinorrhea (M=3.16) and nasal obstruction (M=3.12) had the highest score and affected QOL badly in the item analysis. QOL differed according to the diagnosis of allergic rhinitis history, skin test reaction, some symptoms and allergens. Conclusion: To establish an effective management program for increasing QOL among university students with allergic rhinitis, symptom management methods for nasal obstruction and rhinorrhea should be included in the program.

• 대한물리의학회지
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• 제12권2호
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• pp.83-90
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• 2017

PURPOSE: Central post-stroke pain (CPSP), a chronic pain condition of stroke patients, can impair activities of daily living and worsen the quality of life (QOL), thereby negatively influencing the rehabilitation process. However, CPSP remains an underestimated complication of stroke. This study aimed to describe the prevalence and types of new-onset chronic pain and to identify the relation between pain and QOL in stroke patients. METHODS: All patients hospitalized because of a diagnosis of stroke were included. Questionnaire was used. Pain intensity was measured using Numerical rating scale (NRS), and pain characteristics were assessed using DN4. QOL was measured using SF-36. Descriptive statistics were used to analyze the characteristics and pain data, and chi-square test was used to compare QOL categorical data between the nociceptive and neurological pain groups. RESULTS: CPSP development was reported by 34% of the post-stroke pain patients. Perceived QOL was low in both groups, especially with respect to the physical functioning, bodily pain, physical-role functioning, emotional-role functioning, and mental health domains. However, no significant difference was observed in QOL between the nociceptive and neurological pain groups (p<.05). CONCLUSION: Our results indicated that CPSP is a common and disabling complication that is difficult to treat, often decreases QOL, and may negatively affect rehabilitation treatment.

• Asian Pacific Journal of Cancer Prevention
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• 제14권3호
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• pp.1905-1909
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• 2013

Objective: The aim of the current study was to evaluate changes in treatment outcomes in terms of health-related quality of life (HRQoL) and symptom burden at zero, one, three, and six months after an initial diagnosis of colorectal cancer. The demographic and clinical characteristics that account for outcome changes in patients were investigated using a repeated measures framework. Methods and Materials: A cohort study was performed of 134 colorectal cancer patients followed from diagnosis to 6 months post-treatment in Central Taiwan. HRQoL and symptoms were assessed at diagnosis and one, three, and six months thereafter. The Functional Assessment of Cancer Therapy-Colon (FACT-C) questionnaire, VAS pain, and the Memorial Symptom Assessment Scale (MSAS) were used for data collection. A generalized estimating equation (GEE) was applied for statistical analysis. Results: The majority of the patients were male (55%) and married (91.5%). The mean age was 60.4 years (SD = 11.71). Most were diagnosed stage III and IV colorectal cancer (54.5%). All underwent surgery; some also received chemotherapy (CT) or concurrent chemoradiation therapy (CCRT). The results of the GEE showed that overall, the HRQoL, pain, and symptoms of the patients significantly improved over the treatment period. Patients with stage IV disease who had received surgery and CCRT showed the worst HRQoL. Females, patients with comorbidity, and stage IV patients had higher pain scores over time. Female and stage IV patients had more severe physical symptoms, whereas stage II and IV patients had worse psychological symptoms over time. Conclusion: The patients' HRQoL, pain, and symptoms significantly improved over the 6-month treatment period. Certain patient and clinical variables accounted for changes in treatment outcomes regarding HRQoL and symptom burden in colorectal cancer patients.