|
| Correlation between Abdominal Fat Amount and Fatty
Liver, using Liver to Kidney Echo Ratio on Ultrasound |
|
| Yang Shin Park, MD Chang Hee Lee, MD, Kyung Mook Choi, MD,
Jongmee Lee, MD, Jae Woong Choi, MD, Kyeong Ah Kim, MD,
Cheol Min Park, MD |
|
| Departments of 1Radiology, and 2Internal Medicine (Division of Endocrinology and
Metabolism), Korea University Guro Hospital, Korea University College of Medicine, Seoul,
Korea |
|
| Purpose: It has been generally recognized that fatty liver can often be seen in the
obese population. This study was conducted in order to evaluate the association
between fatty liver and abdominal fat volume.
Materials and Methods: A total of 105 patients who visited our obesity clinic in the
recent three years underwent fat CT scans and abdominal US. Attenuation difference
between liver and spleen on CT was considered as a reference standard for the diagnosis
of fatty liver. On US, the echogenicity of the liver parenchyma was measured in
three different regions of interest (ROI) close to the adjacent right kidney in the same
slice, avoiding vessels, bile duct, and calcification. Similar measurements were performed
in the right renal cortex. The mean values were calculated automatically on
the histogram of the ROI using the PACS program. The hepatorenal echogenicity
ratio (HER; mean hepatic echogenicity/ mean renal echogenicity) was then calculated.
Abdominal fat volume was measured using a 3 mm slice CT scan at the L4/5 level
and was calculated automatically using a workstation. Abdominal fat was classified
according to total fat (TF), visceral fat (VF), and subcutaneous fat (SF). We used
Pearson’s bivariate correlation method for assessment of the correlation between
HER and TF, VF, and SF, respectively.
Results: Significant correlation was observed between HER and abdominal fat (TF,
VF, and SF). HER showed significant correlation with VF and TF (r = 0.491 and 0.402,
respectively; p = 0.000). The correlation between HER and SF (r = 0.255, p = 0.009)
was less significant than for VF or TF.
Conclusions: Fat measurement (HER) by hepatic ultrasound correlated well with
the amount of abdominal fat. In particular, the VF was found to show a stronger association
with fatty liver than SF. |
|
| Keyword : Fatty liver; Obesity; Ultrasound; Abdominal fat; Visceral fat |
|
pdf파일 : 219-224박양신.pdf 
|
|
> Journal > Journal Search 
Journal of Korean Society of Ultrasound in Medicine 2012 ; 31 (4) : p.219-224
