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中华医学超声杂志(电子版) ›› 2026, Vol. 23 ›› Issue (01) : 23 -29. doi: 10.3877/cma.j.issn.1672-6448.2026.01.004

腹部超声影像学

生物声学脂肪分数对高甘油三酯血症患者肝脂肪变性定量分析的初步研究
王元元1, 李昀霖1, 关晶波1, 孙敏1, 谢亚宁1, 张大鹍1,(), 张子浩2   
  1. 1 100091 北京,中国中医科学院西苑医院超声科
    2 100091 北京,中国中医科学院西苑医院心血管病中心
  • 收稿日期:2025-07-03 出版日期:2026-01-01
  • 通信作者: 张大鹍
  • 基金资助:
    中央级公益性科研院所基本科研业务费专项资金资助(ZZ16-XRZ-022)

Quantitative analysis of hepatic steatosis in patients with hypertriglyceridemia using ultrasound derived fat fraction: a preliminary study

Yuanyuan Wang1, Yunlin Li1, Jingbo Guan1, Min Sun1, Yaning Xie1, Dakun Zhang1,(), Zihao Zhang2   

  1. 1 Department of Ultrasound, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, China
    2 Center of Cardiovascular Disease, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, China
  • Received:2025-07-03 Published:2026-01-01
  • Corresponding author: Dakun Zhang
引用本文:

王元元, 李昀霖, 关晶波, 孙敏, 谢亚宁, 张大鹍, 张子浩. 生物声学脂肪分数对高甘油三酯血症患者肝脂肪变性定量分析的初步研究[J/OL]. 中华医学超声杂志(电子版), 2026, 23(01): 23-29.

Yuanyuan Wang, Yunlin Li, Jingbo Guan, Min Sun, Yaning Xie, Dakun Zhang, Zihao Zhang. Quantitative analysis of hepatic steatosis in patients with hypertriglyceridemia using ultrasound derived fat fraction: a preliminary study[J/OL]. Chinese Journal of Medical Ultrasound (Electronic Edition), 2026, 23(01): 23-29.

目的

探讨生物声学脂肪分数(UDFF)在不同程度高甘油三酯血症(HTG)患者肝脂肪变性定量评估中的价值。

方法

收集2023年10月至2024年12月于中国中医科学院西苑医院就诊的156例HTG患者及40例健康对照者。收集患者的临床资料、总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)及脂肪肝超声分级、皮下脂肪厚度(SFT)、内脏脂肪厚度(VFT)、UDFF。根据TG水平将HTG患者分为TG边缘升高组(1.7≤TG<2.3 mmol/L)63例和TG升高组(2.3≤TG<5.7 mmol/L)93例。评估UDFF测值的操作者内部一致性,比较各组间UDFF差异,并分析其与临床指标的相关性。

结果

UDFF测值的操作者内部一致性好(组内相关系数=0.971,P<0.001)。HTG组UDFF值显著高于对照组(11.0% vs 5.0%,P<0.001),UDFF随TG水平升高呈递增趋势:对照组5.0%<TG边缘升高组6.0%<TG升高组15.0%,两两比较差异均具有统计学意义(P<0.05)。HTG患者UDFF与脂肪肝分级、TG、VFT呈正相关(r=0.817、0.745、0.641,P<0.001),与HDL-C呈负相关(r=-0.546,P<0.001)。多元线性回归分析显示,脂肪肝分级(β=0.390)、TG(β=0.402)、VFT(β=0.170)和SFT(β=0.121)是UDFF的独立危险因素(R2=0.819)。

结论

UDFF与HTG患者脂肪肝分级及代谢指标显著相关,可以早期识别并定量评估HTG患者的肝脂肪变性情况。

Objective

To evaluate the value of ultrasound derived fat fraction (UDFF) in the quantitative assessment of hepatic steatosis in patients with varying degrees of hypertriglyceridemia (HTG).

Methods

A total of 156 HTG patients and 40 healthy controls who visited Xiyuan Hospital, China Academy of Chinese Medical Sciences from October 2023 to December 2024 were enrolled. Clinical data, total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), ultrasound grade of fatty liver, subcutaneous fat thickness (SFT), visceral fat thickness (VFT), and UDFF were collected. HTG patients were divided into two groups based on TG levels: borderline elevated TG group (1.7≤TG<2.3 mmol/L, n=63) and elevated TG group (2.3≤TG<5.7 mmol/L, n=93). The intra-observer consistency of UDFF measurements was evaluated, differences in UDFF were compared among groups, and its correlation with clinical indicators was analyzed.

Results

The intra-observer consistency of UDFF measurements was excellent (intra-class correlation coefficient=0.971, P<0.001). The UDFF value in the HTG group was significantly higher than that of the control group (11.0% vs 5.0%, P<0.001). UDFF showed an increasing trend with rising TG levels: control group (5.0%) <borderline elevated TG group (6.0%)<elevated TG group (15.0%), with statistically significant differences in pairwise comparisons (P<0.05). In HTG patients, UDFF was positively correlated with fatty liver grade, TG, and VFT (r=0.817, 0.745, and 0.641, respectively; P<0.001) and negatively correlated with HDL-C (r=-0.546, P<0.001). Multiple linear regression analysis revealed that fatty liver grade (β=0.390), TG (β=0.402), VFT (β=0.170), and SFT (β=0.121) were independent risk factors for UDFF (R2=0.819).

Conclusion

UDFF is significantly correlated with the grade of fatty liver and metabolic indicators in HTG patients, enabling early identification and quantitative assessment of hepatic steatosis in this population.

图1 高甘油三酯血症患者皮下脂肪厚度、内脏脂肪厚度测量超声图像。图a为皮下脂肪厚度测量,使用线阵探头9L4于腹部正中脐上l cm处测量皮肤层后缘至腹直肌内侧前缘的距离,测值为1.80 cm;图b为内脏脂肪厚度测量,使用凸阵探头C5-2在同一部位测量腹直肌内侧后缘至腹主动脉前壁的距离,测值为4.45 cm
图2 生物声学脂肪分数(UDFF)测量超声图像。使用DAX探头(频率1.0~5.7 MHz),垂直放置于肝右前叶,避开大血管及肋骨阴影区,嘱患者深吸气屏住呼吸5 s,同时开始采集数据,自动获取UDFF值,图a为甘油三酯值为4.0 mmol/L的高甘油三酯血症患者UDFF测量,UDFF=15%;图b为甘油三酯值为1.2 mmol/L的健康受试者UDFF测量,UDFF=5%
表1 对照组与HTG组的临床资料与超声参数比较
表2 对照组、TG边缘升高组、TG升高组的临床资料与超声参数比较
表3 多元线性回归分析UDFF的危险因素
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