The Role of Ultrasonography in the Evaluation of Abdominal Fat: Analysis of Technical and Methodological Issues
The Role of Ultrasonography in the Evaluation of Abdominal Fat: Analysis of Technical and Methodological Issues
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DOI：
10.1016/j.acra.2013.07.009
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发表时间：
2013-10-01
影响因子：
4.8
通讯作者：
Battista, Giuseppe
中科院分区：
文献类型：
--
作者：
Bazzocchi, Alberto;Filonzi, Giacomo;Battista, Giuseppe
理由和目标：超声检查（美国）在肥胖评估中越来越流行，但没有人研究这一工具的潜在局限性。我们的目的是探讨技术条件对超声评估腹部脂肪的影响。 材料与方法：连续纳入45名健康男性和45名健康女性，按性别随机分为三组，分别针对空腹状态（餐前和餐后[A]）、呼吸（呼气和吸气[B]）以及不同年代的超声设备（2003年和1998年（C））三个技术点进行检查。两名盲法放射科医生在这些相反的条件下进行超声检查，两次获得代表皮下和内脏脂肪的五个参数。使用学生 t 检验和 Lin 相关系数进行统计分析，以评估测量值以及观察者间和观察者内一致性的差异。结果：在禁食状态和呼吸方面观察到腹内脂肪厚度的最大和唯一统计显着变化（分别为 Delta% = 24.1 +/- 21.3 和 Delta% = 9.2 +/- 20.4；P < .0001）。再现性和可重复性，特别是内脏脂肪，被证明在以下条件下更稳定：禁食状态、呼气和较新的机器（2003）。结论：本文提供了基本信息和“置信范围”，以了解美国在测量腹部脂肪时使用不同条件时可能出现的变化，美国用户和身体成分领域涉及该技术的研究人员会仔细解决和考虑这些变化。
Rationale and Objectives: Ultrasonography (US) is becoming popular for the assessment of adiposity, but no one has studied this tool in the light of its potential limitations. Our purpose was to investigate the impact of technical conditions on the evaluation of abdominal fat by US.Materials and Methods: Forty-five healthy males and 45 healthy females were consecutively enrolled in the study, randomly assigned to three groups equally distributed by sex, and examined accordingly to three technical points: fasting state (before and after meal [A]), breathing (expiration and inspiration [B]), and US equipment from different generations: 2003 and 1998 (C). Two blinded radiologists performed US in the these opposite conditions, acquiring five parameters representative of subcutaneous and visceral adiposity in two times. Student's t-test and Lin's correlation coefficient were used for statistical analysis to assess differences in the measures as well as in inter- and intra-observer agreements.Results: The maximum and the only statistically significant changes were observed for intra-abdominal fat thickness regarding fasting state and breathing (Delta% = 24.1 +/- 21.3 and Delta% = 9.2 +/- 20.4, respectively; P < .0001). Reproducibility and repeatability, especially for visceral fat, were proved more stable in the following conditions: fasting state, expiration, and newer machine (2003).Conclusion: This article provides essential information and "range of confidence" for variations that can be expected from using different conditions in the measurement of abdominal adiposity by US to be carefully addressed as well as considered by US users and by researchers involving this technique in the field of body composition.