• 사상체질의학회지
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• 제15권2호
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• pp.124-128
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• 2003

Background: Sasang Constitutional Medicine (SCM) is a component of Korean traditional medicine that classifies humans into four categories, according to their constitution (Taeyangin, Taeumin, Soyangin and Soeumin). We are unaware of previous assessments of SCM in non-Asian race groups. Objectives: To quantify body composition components in three race groups and to determine whether SCM has an independent effect on body composition components. Design: A cross-sectional evaluation of 76 adults (28 Caucasian, 21 African-American, 27 Asian). Body composition was estimated using dual energy x-ray absorptiometry. Results: SCM component had a significant effect on weight, fat, and lean mass regardless of race group (p <0.001).

• Journal of Nutrition and Health
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• 제28권9호
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• pp.817-824
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• 1995

This study was performed to evaluate the effect of dietary protein level on Ca efficiency in bone mineral density in growing male rats. Twenty male rate were divided into two groups. The rats in one group were fed on casein 20% diet as control group and the others were fed on casein 40% diet as protein group. All rats were fed on experimental diet and deionized water ad libitum for 9 weeks. The total body, spine and femur bone mineral density and bone mineral content were measured using dual energy-x ray absorptiometry. Urinary calcium, phosphate, pyridinoline and creatinine, serum calcium, phosphate, total protein, albumin, alkaline phosphatase(ALP) and osteocalcin were measured. Urinary Ca excretion, pyridinoline and crosslinks value and serum ALP content seem to be increased in high protein group. It appears that the growing rats in high protein group had a higher bone resprption and bone formation than those in control group. Animal fad a high protein diet had a siginficantly higher Ca efficiency in BMD, BMC of total body, spine and femur. The results of this show that increasing of dietary protein level (40%) is beneficial of improvement of Ca efficiency during growing period.

• Journal of Periodontal and Implant Science
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• 제29권4호
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• pp.837-846
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• 1999

There were few reports about the fluoride concentration in bone and osteoporotic women. This study was designed to evaluate the relationship between the urinary fluoride concentration and periodontal condition in osteoporotic old women. Twentyeight postmenopausal women(Test group) and twenty-one premenopausal women(Control group) were examined. Bone mineral density(BMD) of lumbar spine(L2-L4) was measured by dual energy X-ray absorptiometry(DEXA). The urine samples were collected at early morning and determined with the help of a fluoride-specific electrode and Tisabbufferd samples. The results were as follows. 1. The mean urinary fluoride concentration in test and control group showed statistically no difference. 2. The bone mineral density(BMD) of the spine in test group was significantly lower than control group(p<0.05). 3. The significant negative correlation was found between BMD level and age after menopause $(p<0.001,\;{\gamma}=-0.526$. 4. The urinary fluoride concentration was not correlated with age, age after menopause and bone mineral density. 5. The urinary fluoride concentration was not correlated with periodontal condition.

• Imaging Science in Dentistry
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• 제31권2호
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• pp.67-71
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• 2001

Purpose: To assess the possibility of using panoramic indices as an indicator of jaw osteoporosis. Methods: Mandibular cortical width (MCW), degree of mandibular alveolar bone resorption (ABR) and morphology of mandibular inferior cortex (MIC) on panoramic radiograph were used as panoramic indices. These panoramic indices were compared with bone mineral density (BMD) of lumbar (L1-L4) and femoral neck measured by dual energy X-ray absorptiometry. We also compared MCW and ABR of young men with those of postmenopausal women. Results : There was a significant correlation between ABR and BMD of lumbar and femoral neck. And also significant correlation between MIC and BMD of lumbar and femoral neck. ANOVA test of BMD of lumbar and femoral neck showed significant differences according to morphologic classification of inferior cortex. There was significant difference in MCW and ABR between young men and postmenopausal women. Conclusion: Our results suggested that ABR and MIC on panoramic radiograph could be reliable in screening of osteoporosis.

• 대한영양사협회학술지
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• 제7권2호
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• pp.159-166
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• 2001

This study was conducted to investigate the relationship of calcium intake , serum calcium level to calcium supplementation and the effect of nutritional education in middle-aged women. The age distribution of the subjects was 49-55 years. Daily nutrient intakes and dietary sources of calcium were analyzed by convenient method and food frequency questionnaire. At the same time, fasting blood samples were collected and serum calcium and magnesium concentrations were measured before and after nutritional education. The BMD of subjects were measured by Dual Energy X-ray Absorptiometry(DEXA). Serum calcium and magnesium concentrations were significantly(p<0.05) different between pre and post nutritional education. After nutritional education, nutrient intakes were significantly increased(p<0.05), especially calcium. This results suggested that dietary calcium intake as well as nutritional education seem to be important in preventing in middle-aged women.

• 근관절건강학회지
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• 제18권1호
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• pp.5-15
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• 2011

Purpose: Osteoporosis is often considered as a women's disease, but men's osteoporosis is also increasingly recognized as an important public health problem. This study was carried out to identify the important modifiable risk factors for osteoporosis in men. Methods: Two hundred and fourteen men were selected among those who checked bone mineral density by dual energy x-ray absorptiometry in lumbar vertebrae from June to September, 2009 at 3 general hospitals in Busan. Self-administrated questionnaires and BMD results of lumbar vertebrae were used for data. Collected data were analyzed by using SPSS 14.0 program. Results: The sports activity level in 30's, body weight, and fracture history of mother were the most powerful influencing factors on the bone mineral density of lumbar vertebrae. Conclusion: These results highlight the need to participate vigorously in sports activity during 30s as a means of increasing peak bone mass in lumbar vertebrae in order to prevent osteoporosis and fracture in men.

• 한국멀티미디어학회논문지
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• 제19권8호
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• pp.1248-1259
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• 2016

Classification methods based on dual energy X-ray absorptiometry, ultrasonic waves, and quantitative computed tomography have been proposed. Also, a classification method based on machine learning with bone mineral density and structural indicators extracted from the CT images has been proposed. We propose a method which enhances the performance of existing classification method based on bone mineral density and structural indicators by extending structural indicators and using principal component analysis. Experimental result shows that the proposed method in this paper improves the correctness of osteoporosis classification 2.8% with extended structural indicators only and 4.8% with both extended structural indicators and principal component analysis. In addition, this paper proposes a method of automatic phantom analysis needed to convert the CT values to BMD values. While existing method requires manual operation to mark the bone region within the phantom, the proposed method detects the bone region automatically by detecting circles in the CT image. The proposed method and the existing method gave the same conversion formula for converting CT value to bone mineral density.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2012년도 춘계학술발표대회
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• pp.369-372
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• 2012

대사성 골 질환인 골다공증(Osteoporosis)의 조기 진단을 위한 골 밀도를 측정하는 방법이 최근 연구되고 있다. 골 밀도 영상은 이중 에너지 X 선 흡수법에 의해 측정되는데, 영상에 존재하는 잡음은 뼈 영역 추출과 골 밀도 계산에 어려움을 주고 있다. 따라서 본 논문에서는 최근 신호처리 분야에서 폭넓게 사용되고 있는 sparse 표현을 도입하여 X 선 영상의 잡음을 제거하는 방법을 제안한다. 실험을 통해 제안한 잡음 제거 방법의 결과가 기존의 방법에 비해 개선됨을 MSR(Mean to Standard deviation Ratio)과 CNR(Contrast to Noise Ratio)을 통해 확인하였다.

• 식품과학과 산업
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• 제51권1호
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• pp.37-44
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• 2018

The prevalence of obesity is continually increasing in South Korea; about 1/3 of adults are diagnosed with obesity and 1/2 of adults are overweight in 2016. Abnormal body fat mass increased the risk factors of metabolic syndrome (including hypertension, type II diabetes, dyslipidemia), chronic kidney failure, osteoarthritis, and cardiovascular disease. Ministry of Food and Drug Safety (MFDS) in Korea established the validation and approval system for "functional food" based on related laws and regulations. According to the guideline of MFDS, the biomarkers for obesity study in vitro, in vivo, and clinical trial are well summarized. The analysis of physical phenotypes is necessary condition to study further molecular phenotypes and pathway analysis in vivo study. Thus, we will review currently available physical phenotype analysis; dual energy X-ray absorptiometry (DEXA) and Oxylet gas analysis will be examined in-depth.

• Clinical Pain
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• 제19권2호
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• pp.111-115
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• 2020

We report a case of a healthy 38-year-old man presenting with insufficiency fracture of proximal tibia associated with unrecognized osteoporosis. Radiologic bone DEXA (Dual Energy X-ray Absorptiometry) assessment revealed osteoporosis, but the patient displayed no apparent risk factors for insufficiency fractures and osteoporosis except for a history of smoking. Following right proximal tibial open reduction and internal fixation, the patient commenced smoking cessation and began taking alendronate. The patient was treated for gait rehabilitation, which included quadriceps strengthening exercises and his condition improved with independent walking. This report highlights an unusual site of proximal tibial insufficiency fractures and the potential effect of smoking on low bone mineral density in a young male patient.