• Title, Summary, Keyword: visceral fat

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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.

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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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.

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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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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The Study on Association between Abdominal Visceral Fat and Obesity Indices in Obese Adult (비만 성인에서 복부 내장지방과 단순 비만 지표와의 연관성 연구)

  • Yoo, Jin-Sook;Song, Yun-Kyung;Lim, Hyung-Ho
    • Journal of Korean Medicine Rehabilitation
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    • v.20 no.2
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    • pp.129-143
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    • 2010
  • Objectives : This study examined search on how the obesity indices, that are largely used in clinics such as waist circumference(WC), body mass index(BMI) and waist-hip ratio(WHR), are related to the visceral fat that was measured from abdominal computed tomography(CT) and the ratio of visceral fat/subcutaneous fat. Then, two groups ware compared in order to find out which characteristics of ordinary adults relationship with the abdominal obesity. Two groups are divided as follows; ones who are obese based on the measurement of WC and the others who are obese based on the level of BMI. Methods : A group of 63 test subjects that were gathered in the oriental medical hospital of Kyung-Won university is divided into two groups; ones (n=51, general obesity; group A) who have $BMI{\geq}25$ and $WC{\geq}85$, and the others (n=12, abdominal obesity; group B) who have BMI<25 and $WC{\geq}85$. Then, each group's obesity indices, abdominal CT, lipid level, glucose, adiponectin, leptin and C-reactive protein(CRP) are compared. In addition, subjects are again divided into two to examine the characteristics; ones (n=14, visceral obesity; group C) with visceral obesity based on the ratio between visceral fat and subcutaneous fat measured through abdominal CT, and the others (n=38, non-visceral obesity; group D) who are obese but not viscerally obese. Results & Conclusions : As a measurement that applies abdominal visceral fat and subcutaneous fat, BMI and WC can be considered as an appropriate obesity index while WHR cannot appropriately apply the abdominal fat amount. Moreover, the study indicates that abdominal obesity group based on the ratio of visceral fat/subcutaneous fat has more significant difference than the abdominal obesity group based on the WC in case of blood lipid index.

Fenofibrate Inhibits Visceral Adiposity by Inhibiting UCPs in C57BL/6J Mice Fed on a High Fat Diet

  • Oh, Jaeho;Yoon, Michung
    • Biomedical Science Letters
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    • v.18 no.4
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    • pp.355-361
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    • 2012
  • We investigated to verify whether the $PPAR{\alpha}$ agonist fenofibrate regulates adipose tissue metabolism and to determine the molecular mechanism involved in this regulation. After male mice (C57BL/6J) received a high fat diet with or without fenofibrate for 6 weeks, the effects of fenofibrate on not only adipose tissue weight, visceral adipocyte size, serum lipid and glucose levels, but also the expression of uncoupling proteins (UCPs). Mice given a fenofibrate-supplemented high fat diet showed reduced both visceral and subcutaneous adipose tissue weights versus high fat diet-fed animals. The size of visceral adipocytes was significantly decreased by fenofibrate treatment. The administration of fenofibrate resulted in decreased serum levels of triglycerides, free fatty acids, and glucose. Moreover, fenofibrate up-regulated mRNA levels of visceral adipose tissue UCP2 and skeletal muscle UCP3. Therefore, our results suggest that the increases in the expression of UCPs by fenofibrate seem to suppress diet-induced visceral adiposity as well as severe hypertriglyceridemia and hyperglycemia in male mice.

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.

A Case Study on a Visceral Fat Changes in Obese Patient Treated by the Oriental Medical Therapy Program (내장형 고도비만 환자에 대한 한방 체형관리 프로그램의 치료 증례보고)

  • Lee, Yoon-Jae;Hwang, Deok-Sang;Kim, Yong-Suk;Lee, Kyung-Sub
    • Journal of Korean Medicine for Obesity Research
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    • v.7 no.1
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    • pp.97-106
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    • 2007
  • Objectives : The purpose of this study was to investigate the clinical effect of oriental medical short term therapy on visceral fat obesity. In present study, we report 20-year-old visceral fat obesity woman who experienced oriental medical therapy program. Methods : The obese patient was treated from the 20th of June to the 3rd July. Herbal medicine, low calorie diet, electrolipolysis, auricular acupuncture, and aerobic exercise were done during the treatment period. Results : Her body weight decreased from 77.30kg to 71.15kg. The BMI decreased from $32.6kg/m^2$ to $29.5kg/m^2$. First of all, visceral fat tissue was effectively decreased after oriental obesity therapy evaluated by CT. Visceral fat tissue decreased from $123.44cm^2$ to $83.06cm^2$, subcutaneous fat tissue from $327.88cm^2$ to $323.09cm^2$. Short term oriental medical treatment could be effective in visceral fat obesity treatment. Conclusions : The patient with visceral fat obesity was improved using short term oriental medical treatment.

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The Relationship of Abdominal Obesity and Lipid Profiles by Computed Tomography in Adult Women (전산화 단층촬영을 이용한 성인여성의 복부비만과 지질대사지표와의 연관성)

  • Kim, Mi-Young
    • Journal of radiological science and technology
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    • v.31 no.1
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    • pp.33-39
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    • 2008
  • Abdominal obesity, especially, visceral obesity is thought to be a risk factor of type 2 diabetes and cardiovascular disease such as hypertension, hyperlipidemia, coronary artery disease. Based on previous studies visceral fat accumulation is highly related to these diseases compared to subcutaneous fat accumulation. The purpose of this study was to see the relation between abdominal obesity and lipid profiles in adult women. The included subjects were 25 adult women(BMI > $23\;kg/m^2$), who visited the obesity clinic in a general hospital from April 2006 to September 2007. Blood pressure, fasting glucose and lipid profiles were measured. The abdominal fat distribution had been assessed by CT scan at the level of L4-L5. From bivariate analyses, the visceral fat accumulation showed negative correlations with TC and TC/HDL. The BMI, total abdominal fat and Visceral fat/Subcutaneous fat ratio showed significant correlations with visceral fat accumulation. From linear regression analyses of all the study subjects, TC, TG and HDL were found to be determinants of the visceral fat accumulation($R^2\;=\;0.474$).

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