来自弗雷明汉心脏研究胸部和腹部 CT 的皮下和内脏脂肪组织参考值。
Subcutaneous and Visceral Adipose Tissue Reference Values From the Framingham Heart Study Thoracic and Abdominal CT.
发表日期:2024 Jul 25
作者:
J Peter Marquardt, P Erik Tonnesen, Nathaniel D Mercaldo, Alexander Graur, Brett Allaire, Mary L Bouxsein, Elizabeth J Samelson, Douglas P Kiel, Florian J Fintelmann
来源:
INVESTIGATIVE RADIOLOGY
摘要:
计算机断层扫描 (CT) 可捕获皮下和内脏(SAT 和 VAT)脂肪组织室的数量、密度和分布。这些指标可能会随着年龄和性别而变化。该研究旨在为胸部 CT 上的 SAT 以及腹部 CT 上的 SAT 和 VAT 提供年龄、性别和椎骨水平的特定参考值。这项观察性研究的二次分析描述了 SAT弗雷明汉心脏研究的参与者在 2002 年至 2011 年间至少接受过 2 次 CT 检查中的 1 次,但没有已知的癌症诊断结果。我们使用之前经过验证的机器学习辅助流程和严格的质量保证将 SAT 细分为第五、第八、第十胸椎(T5、T8、T10)以及第三腰椎(L3)的 SAT 和 VAT。对于每个指标,我们测量了横截面积 (cm2) 和平均衰减(亨斯菲尔德单位 [HU]),并计算了指数(面积/高度2) (cm2/m2) 和规格(衰减 × 指数) (HU × cm2/m2) 。我们按年龄和性别总结了身体成分指标,并建模了性别、年龄和椎骨水平特定的参考曲线。我们纳入了 3730 名弗雷明汉心脏研究参与者的 3797 次扫描中最多 4 个椎骨水平的 14,898 个单水平测量值(1889 年)。 51%] 男性,平均[标准差]年龄为 55.6 ± 10.6 岁;范围为 38-81 岁)。平均增值税指数随着年龄的增长而增加,在 <45 岁年龄组中,男性为 65 (cm2/m2),女性为 29 (cm2/m2),而男性为 99 (cm2/m2),女性为 60 (cm2/m2)。 )>75 岁年龄组的女性。 SAT 随着年龄的增长不太明显,导致 VAT/SAT 比率随着年龄的增长而增加。免费的 R 包和在线交互式视觉网络界面允许访问参考值。本研究为 T5、T8、T10 和 L3 椎骨水平的 CT 评估 SAT 建立了年龄、性别和椎骨水平特定的参考值椎骨水平 L3。版权所有 © 2024 Wolters Kluwer Health, Inc. 保留所有权利。
Computed tomography (CT) captures the quantity, density, and distribution of subcutaneous and visceral (SAT and VAT) adipose tissue compartments. These metrics may change with age and sex.The study aims to provide age-, sex-, and vertebral level-specific reference values for SAT on chest CT and for SAT and VAT on abdomen CT.This secondary analysis of an observational study describes SAT and VAT measurements in participants of the Framingham Heart Study without known cancer diagnosis who underwent at least 1 of 2 CT examinations between 2002 and 2011. We used a previously validated machine learning-assisted pipeline and rigorous quality assurance to segment SAT at the fifth, eighth, and tenth thoracic vertebra (T5, T8, T10) and SAT and VAT at the third lumbar vertebra (L3). For each metric, we measured cross-sectional area (cm2) and mean attenuation (Hounsfield units [HU]) and calculated index (area/height2) (cm2/m2) and gauge (attenuation × index) (HU × cm2/m2). We summarized body composition metrics by age and sex and modeled sex-, age-, and vertebral level-specific reference curves.We included 14,898 single-level measurements from up to 4 vertebral levels of 3797 scans of 3730 Framingham Heart Study participants (1889 [51%] male with a mean [standard deviation] age of 55.6 ± 10.6 years; range, 38-81 years). The mean VAT index increased with age from 65 (cm2/m2) in males and 29 (cm2/m2) in females in the <45-year-old age group to 99 (cm2/m2) in males and 60 (cm2/m2) in females in >75-year-old age group. The increase of SAT with age was less pronounced, resulting in the VAT/SAT ratio increasing with age. A free R package and online interactive visual web interface allow access to reference values.This study establishes age-, sex-, and vertebral level-specific reference values for CT-assessed SAT at vertebral levels T5, T8, T10, and L3 and VAT at vertebral level L3.Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.