• Title, Summary, Keyword: Visceral fat area

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Effects of ADMIRE Algorithms on Fat Measurements Using Computed Tomography (CT) (CT를 이용한 지방측정에 ADMIRE 알고리즘이 미치는 영향)

  • Lee, Chang Wook;Lee, Sang Heon;Im, In Chul;Lee, Hyo Yeong
    • Journal of the Korean Society of Radiology
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    • v.13 no.3
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    • pp.465-472
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    • 2019
  • To investigate the effects of iterative reconstruction algorithms on fat measurements using computed tomography (CT), we comparatively and quantitatively analyzed the ratios of visceral, subcutaneous, and visceral-subcutaneous fat areas as well as the variations of HU and noise of visceral and subcutaneous fat using ADMIRE strength and attempted to identify any difference between them. Experimental results showed that no statistically significant difference existed among the visceral, subcutaneous, and visceral-subcutaneous fat area ratios HU of visceral fat area and HU of subcutaneous fat area when applying ADMIRE as compared with existing conventional filtered back projection algorithms. However, as the ADMIRE strength increases, the noise of visceral and subcutaneous fat decreases by up to 12.1% and 19.2%, respectively. In conclusion, iterative reconstruction algorithms have no effect on the visceral, subcutaneous, and visceral-subcutaneous fat area ratios, which are indicators of fat measurement using CT.

A Study on Correlation of the Results VFA Measured by CT Position with VFA Measured by InBody (CT 측정 위치에 따른 내장지방 면적과 Inbody로 측정한 내장지방 면적의 상관성 연구)

  • Lee, Sang Heon;Im, In Chul;Lee, Hyo-Yeong
    • Journal of the Korean Society of Radiology
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    • v.13 no.5
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    • pp.691-698
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    • 2019
  • The patients who visited the Health Promotion Center were compared between the visceral fat area according to CT fat measurement position and the visceral fat area measured by Inbody. In the CT measurement, the visceral fat area measured at the L4-5 and CT Umbilicus positions was not different regardless of gender. In addition, there was no difference between CT visceral fat area and Inbody visceral fat area in the correlation between visceral fat area according to CT measurement position and visceral fat area measured by Inbody. The highly correlated CT measurement position were male L4-5, L5-S1, female L3-4, L4-5, L5-S1, and Umbilicus. In addition, when studying the relationship between the inbody visceral fat area and CT visceral fat area regardless of gender, it is suggested to compare the visceral fat area at the CT L4-5 position.

The Evaluation of Simple Indices of Abdominal Visceral Fat Area Among Korean Obese Adolescents (비만 청소년에서 복부 내장지방량을 반영하는 비만지표에 대한 연구)

  • Choi, Young-Min;Lee, Hyung-Chul;Sim, Woo-Jin;Kim, Kil-Soo;Shin, Seung-Uoo
    • Journal of Korean Medicine for Obesity Research
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    • v.6 no.1
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    • pp.61-67
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    • 2006
  • Objectives : The purpose of this study was to determine what is useful index of abdominal visceral fat area among Korean obese adolescents. Methods : 35 obese adolescents who had visited Kirin Oriental Hospital from August 2004 to May 2006 were included in the study. Weight, height, waist and hip circumferences were measured. Abdominal visceral fat areas at L4-5 level were measured by computed tomography. The subjects were divided into two groups, according to sex. In each group, we investigated the correlation among waist circumference, waist/hip ratio, waist/height ratio, obesity degree and abdominal visceral fat area and evaluated that which one of these kinds of indices is the most useful predictor for visceral fat area in Korean obese adolescents. Results : There were significant correlation between waist circumference, waist/hip ratio, waist/height ratio and obesity index in both group. In boys waist/hip ratio had correlation with abdominal visceral fat area and in girls obesity index had significant correlation with abdominal visceral fat area. Conclusions : Our study suggests that waist/hip ratio in boys, obesity degree in girls can be a relatively good parameter for predicting abdominal visceral fat area.

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The Study on Correlation between Abdominal Fat Area and Obesity Index, Metabolic Syndrome Components in Obese Adult Women (복부지방면적과 비만지표, 대사증후군 구성요소와의 상관성 연구)

  • Ki, Sung-Hoon;Ye, Sung Ae;Song, Yun Kyung
    • Journal of Korean Medicine Rehabilitation
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    • v.26 no.1
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    • pp.103-111
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    • 2016
  • Objectives The waist circumference has been known as an obesity index reflecting the visceral fat. This study was conducted to investigate the obesity index of what can be predicted visceral fat obesity. Methods 121 test subjects who have $BMI{\geq}30$ or BMI 27~29.9 with having more than one high blood pressure, diabetes, and hyperlipidemia were gathered in the Gachon University Korean medical hospital. The relationship between obesity index, the abdominal fat area, and the metabolic syndrome component analyzed using Pearson correlation analysis. The obesity indices, that are largely used in clinics such as waist circumference (WC), HC (hip circumference), body mass index (BMI), waist-hip ratio (WHR) and waist-height ratio (WHtR). Total fat area (TFA), visceral fat area (VFA), subcutaneous area (SFA) and visceral fat/subcutaneous fat ratio (VSR) that was measured from CT. Results 1. Total fat area (TFA) was positively correlated WC, BMI, HC. 2. The subcutaneous fat area (SFA) was positively correlated HC, WC, BMI. 3. The visceral fat area (VFA) did not show a strong correlation with obesity indicators. Conclusions It was found indices of obesity and visceral fat area is a high correlation. BMI, WC was the obesity index showed a high correlation as the SFA, TFA.

Different functions of visceral and subcutaneous fat cells

  • Saito, Yasushi
    • Proceedings of the Korean Society of Applied Pharmacology
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    • pp.29-34
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    • 2003
  • Visceral fat accumulation is known to be an evident clinical index for the insulin resistance related with obesity. Patients with excessive accumulation of visceral fat frequently suffered from metabolic disorder, such as hyperlipidemia, hypertension, and glucose intolerance. However, molecular mechanism for the pathogenesis of obesity-accompanied metabolic disorders has not been fully elucidated. It has been clarified that adipocytes in visceral fat area have different functions from subcutaneous fat area, and these differences might contribute the pathological significance of excessive accumulation of visceral fat for the accompanied insulin resistance and hyperinsulinemia.

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The Research about Distribution of Abdominal Fat in Obese Premenopausal Korean Women (폐경전 한국인 비만여성에서 복부 지방의 분획별 특성에 대한 임상연구)

  • Lee, A-Ra;Chung, Won-Suk;Song, Mi-Yeon
    • Journal of Korean Medicine for Obesity Research
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    • v.8 no.2
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    • pp.25-35
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    • 2008
  • Objectives This study was performed to find out the characters about distribution of abdominal fat(especially superficial and deep subcutaneous fat) in obese premenopausal Korean women. Methods 39 obese premenopausal women were recruited in 2008. Anthropometry and body impedance analysis have been done and abdominal fat distribution had been assessed by computed tomography scan at the level of L4-5. Blood test and questionnaires about depression, eating attitude and physical activity were underwent. Result Abdominal total fat area, subcutaneous fat area including superficial and deep were significantly correlated with anthropometry and BIA result while visceral fat was correlated only with age and waist circumference. In blood profile, only visceral fat area was correlated with HDL cholesterol and triglyceride. And there were no correlation among questionnaires and abdominal fat. There were no difference between superficial and deep subcutaneous fat. Conclusion Abdominal subcutaneous fat including superficial and deep did not have any correlation with heart risk factor. superficial and deep subcutaneous fat had no differences with each other and they did not show any correlation with visceral fat in obese perimenopausal Korean women.

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Changes in of Abdominal Subcutaneous and Visceral Fatfollowingafter Abdominal Obesity Treatment (복부비만 치료 후 피하 및 내장지방의 변화)

  • Shin, Seung-Uoo;Kim, Kil-Soo
    • Journal of Korean Medicine for Obesity Research
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    • v.6 no.2
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    • pp.95-104
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    • 2006
  • Objectives : This study was performed to assess the effect onf abdominal obesity treatment on changes in abdominal subcutaneous and visceral fat. Methods : The study was conducted on 61 abdominally obese patients (13 men and 48 women). Measures of body weight, waist circumference, abdominal subcutaneous and visceral fat area by CT scan, and V/S ratio (Viscero-subcutaneous fat ratio) were acquired before and after Kirindiet therapy. Paired t-test and Wilcoxon signed rank tests were used to est the effects of teatment. Results : Following a mean of 68 days of treatment, waist circumference (-15%), abdominal total fat (-40%), subcutaneous fat (-37.9%), visceral fat (-47.8%) and V/S ratio (-11.1%) were significantly reduced (p<0.05). The change in V/S ratio in female patients was not statistically significant (p=0.491) whereas the change in the V/S ratio in male patients was significant indicating a greater loss of visceral fat (p=0.017). Please check that my changes reflect what the study found Conclusions : The reduction in visceral fat was greater than for subcutaneous fat in male patients but not for female patients.

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Correlation between Abdominal Fat Distribution and Abdominal Temperature in Korean Premenopausal Obese Women

  • Song, Eun-Mo;Kim, Eun-Joo;Kim, Koh-Woon;Cho, Jae-Heung;Song, Mi-Yeon
    • The Journal of Korean Medicine
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    • v.34 no.2
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    • pp.1-9
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    • 2013
  • Objectives: Considering that homeothermy is a major component of metabolic rate, body temperature might play a role in the pathophysiology of obesity. This study aimed to determine the relationship between abdominal fat distribution and abdominal temperature in Korean, premenopausal, obese women. Methods: Weight and height were measured in 26 premenopausal, obese women to calculate body mass index (BMI). Obesity was defined as a $BMI{\geq}25kg/m^2$. Waist circumference (WC) was also measured as well as abdominal fat by computed tomography (CT) and abdominal temperature by digital infrared thermographic imaging (DITI). Results: Visceral abdominal fat area was found to have a significant negative correlation with the temperature of Guanyuan (CV4, lower abdomen acupoint). We also found the visceral-subcutaneous fat ratio had a significant negative correlation with the temperature of CV4 and Right Tianshu (RST25, lateral navel acupoint). Only visceral fat and its ratio to subcutaneous fat had a significant correlation with abdominal temperature. Subcutaneous fat area and total fat area were not correlated with abdominal temperature. Conclusions: This study suggests that abdominal visceral fat has a significant negative correlation with abdominal temperature. Further study is needed to uncover the relationship between abdominal fat distribution and temperature regulation in obese individuals and to define the role of body temperature in the pathogenesis of obesity.

Effects of Far-infrared Therapy on Weight Loss in Korean Obese Women (전신 경피 원적외선 요법이 비만여성의 체중감소에 미치는 영향에 대한 임상연구)

  • Song, Eun-Mo;Kim, Eun-Joo;Kim, Koh-Woon;Cho, Jae-Heung;Song, Mi-Yeon
    • Journal of Korean Medicine for Obesity Research
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    • v.12 no.1
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    • pp.20-32
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    • 2012
  • Object The purpose of this study is to evaluate the effect of far-infrared (FIR) therapy on weight loss. Method Thirty five participants (BMI ${\geq}25kg/m^2$) were recruited. Body weight, Waist circumference (WC), Bio Impedance Analysis (BIA), abdominal fat Computer Tomography (CT) scanning were evaluated. Results of 25 women were analyzed. Result After 6 weeks of FIR therapy, there was significant efficacy on obese women in body weight, WC, Body fat mass (BFM), and Visceral fat area (VFA). But there was no efficacy in Total fat area (TFA), and Subcutaneous fat area (SFA). Conclusion This study suggests that FIR therapy might be an effective way to promote weight and abdominal visceral fat loss in Korean obese women.

Obesity Estimation of Abdominal Fat by Using Computed Tomography : Influence of Breathing Motion on The Fat Measurement (전산화단층영상을 이용한 복부 지방 계측법에서 호흡운동이 비만도 측정에 미치는 영향)

  • Seoung, Youl-Hun
    • Journal of Biomedical Engineering Research
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    • v.33 no.1
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    • pp.8-14
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    • 2012
  • The purpose of this study was to evaluate how much effect to accuracy when measuring abdominal fat by Computed Tomography (CT) under different respiration movements. The study volunteer composed of 66 normal adults ($50.4{\pm}11.2$ years, 33 males, 33 females). We measured their obesity by using Broca index, body mass index (BMI) and CT and have investigated the correlation. The CT scanning for the obesity measurement have done in two ways, one was done in stopping breath after exhaling and the other was holding a breath after inhaling. The results showed no statistically significant difference among the three measuring techniques. And, the error in two ways of inhaling and exhaling was showed 24.2% of volunteers. The two ways of respiration movements made different result in visceral fat area (P = 0.044), subcutaneous fat area (P = 0.636) and abdominal obesity value (P = 0.012). This study demonstrates that the two ways of respiration movements when scanning CT makes change in accuracy in visceral fat area, and in abdominal obesity quantitative measure. Therefore, our study suggests that CT should take twice in two ways while a patient stops breath after exhaling and holds a breath after inhaling when measuring abdominal obesity using CT equipments.