Validation and Evaluation of a Portable Body Scanner for Determination of Obesity

用于确定肥胖的便携式身体扫描仪的验证和评估

• 批准号: 7884780
• 负责人: Jeanne Elizabeth Freeland-Graves
• 金额: $ 10万
• 依托单位: UNIVERSITY OF TEXAS AT AUSTIN
• 依托单位国家: 美国
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-20 至 2010-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7884780
• 关键词: 3-Dimensional; Abdomen; Adult; Air; Algorithms; Area; Body Image; Body Size; Body fat; Caliber; Calibration; Central obesity; Clinical; Computer Vision Systems; Data; Diabetes Mellitus; Dual-Energy X-Ray Absorptiometry; Epidemic; Evaluation; Fatty acid glycerol esters; Goals; Health; Height; Human; Human body; Image; Magnetic Resonance Imaging; Measurement; Measures; Methods; Modeling; Nature; Obesity; Overweight; Personal Computers; Plethysmography; Population Study; Research; Risk; Scanning; Shapes; Sum; Surface; System; Techniques; Testing; Tissues; Use of New Techniques; Validation; abdominal fat; design; digital; indexing; instrument; photonics; reconstruction; skeletal; standard measure; subcutaneous; three-dimensional modeling; waist circumference

DESCRIPTION (provided by applicant): Obesity has reached epidemic levels in the U.S., with 66% of adults overweight and 32% of adults obese. The research uses the new technique of three-dimensional (3 D) photonic scanning to create and validate an instrument that rapidly assesses obesity in clinical and field settings. The first aim is to develop a portable computer vision system of body imaging for 3 D surface imaging of the human body. The hardware system is designed from off-the- shelf components such as digital cameras, projectors, and personal computer. Algorithms for the 3D data are being developed and refined for calculation and system calibration for a small instrument. The second aim is to develop algorithms for surface reconstruction from 3D data in order to define a proper surface representation and to reconstruct a 3D model of the human body from incomplete and noisy data. The third aim begins the human measurement testing in 120 adults. Aim 3 is to estimate the size and shape of the reconstructed human body by a portable body imager and compare to current methods that assess obesity. Anthropometric parameters will be computed by a 3 second body scan via imaging and then compared to other methods of obesity assessment including BMI, waist circumference, sagittal abdominal diameter, bioimpedence, hydrodensitometry, dual energy X-ray absorptiometry, and air displacement plethysmography. The final aim is to validate body imaging as an indicator of central obesity (fat in the abdominal region, as opposed to subcutaneous depots) in a subset of 60 subjects because it is the abdominal fat that is most associated with health risks such as diabetes. Abdominal fat tissue as detected by magnetic resonance imaging scans will be compared to that calculated from 3 D body imaging. In sum, the non-contact, noninvasive nature of this new portable body scanner will produce a quick, inexpensive and objective measure of body size and type of obesity.

描述（由申请人提供）： 肥胖在美国已经达到了流行病的程度，66%的成年人超重，32%的成年人肥胖。该研究使用三维（3D）光子扫描的新技术来创建和验证一种在临床和现场环境中快速评估肥胖的仪器。 第一个目标是开发一个便携式计算机视觉系统的身体成像三维表面成像的人体。硬件系统是从现成的组件，如数码相机，投影仪和个人电脑设计的。3D数据的算法正在开发和完善，用于小型仪器的计算和系统校准。第二个目标是开发用于从3D数据进行表面重建的算法，以便定义适当的表面表示，并从不完整和噪声数据重建人体的3D模型。第三个目标开始对120名成年人进行人体测量测试。目的3是通过便携式人体成像仪估计重建人体的大小和形状，并与当前评估肥胖的方法进行比较。将通过成像进行3秒身体扫描计算人体测量参数，然后与其他肥胖评估方法进行比较，包括BMI、腰围、矢状腹径、生物阻抗、液体密度测定法、双能X线吸收测定法和排气体积描记法。最终目的是验证身体成像作为60名受试者子集中中心性肥胖（腹部脂肪，而不是皮下脂肪）的指标，因为腹部脂肪与糖尿病等健康风险最相关。通过磁共振成像扫描检测到的腹部脂肪组织将与从3D身体成像计算出的脂肪组织进行比较。总之，这种新型便携式身体扫描仪的非接触、非侵入性将产生一种快速、廉价和客观的身体尺寸和肥胖类型测量方法。

项目成果

Three-dimensional surface imaging system for assessing human obesity.

• DOI: 10.1117/1.3250191
• 发表时间: 2009-10-01
• 期刊: Optical engineering (Redondo Beach, Calif.)
• 作者: Xu B;Yu W;Yao M;Pepper MR;Freeland-Graves JH
• 通讯作者: Freeland-Graves JH

Efficacy of thigh volume ratios assessed via stereovision body imaging as a predictor of visceral adipose tissue measured by magnetic resonance imaging.

• DOI: 10.1002/ajhb.22663
• 发表时间: 2015-07
• 期刊: AMERICAN JOURNAL OF HUMAN BIOLOGY
• 影响因子: 2.9
• 作者: Lee, Jane J.;Freeland-Graves, Jeanne H.;Pepper, M. Reese;Yu, Wurong;Xu, Bugao
• 通讯作者: Xu, Bugao

Evaluation of a rotary laser body scanner for body volume and fat assessment.

• DOI: 10.1520/jte102871
• 发表时间: 2010-07-08
• 期刊: Journal of testing and evaluation
• 影响因子: 1.2
• 作者: Pepper MR;Freeland-Graves JH;Yu W;Stanforth PR;Xu B
• 通讯作者: Xu B

Automated quantification of abdominal adiposity by magnetic resonance imaging.

通过磁共振成像自动量化腹部肥胖。

• DOI: 10.1002/ajhb.22862
• 发表时间: 2016
• 期刊: American journal of human biology : the official journal of the Human Biology Council
• 作者: Sun,Jingjing;Xu,Bugao;Freeland-Graves,Jeanne
• 通讯作者: Freeland-Graves,Jeanne