Improving Dietary Assessment Methods Using the Cell Phone and Digital Imaging

描述(由申请人提供)： 饮食摄入量为制定预防干预计划提供了一些最有价值的见解。然而，对饮食的准确评估是有问题的。将技术融合到具有更高分辨率的图像、更高的存储容量和更快的处理器的移动电话(蜂窝电话)中，使这些设备能够处理以前不可能的信息。该项目针对RFA-CA-07-032的几个目标，使用手机捕捉以电子方式提交给研究人员的可视和记录的细节；减轻受访者的负担；并提供对营养、食物和补充剂摄入量的准确估计。为了充分应对这些挑战，组建的研究小组代表了电气工程、计算机、信息科学、营养流行病学、稳定同位素和统计学方面的专业知识。我们的目标是开发、实施和评估移动电话食物记录(MpFR)，以准确地记录成年人的日常食物和营养摄入量。我们的第一步包括开发用于数字照片的成像软件，该软件将估计食物的消耗量，修改FNDDS营养数据库，以及开发用户友好的界面。移动电话在世界各地被广泛使用，可以提供一种独特的机制来收集饮食信息，从而减轻记录保管员的负担。食物的图片可以用各种输入方法标记，这些输入方法将项目链接起来，用于图像处理和分析，以量化食物消费。我们计划招募一组成人样本，在受控条件下使用mpFR来帮助量化与食物和营养输出相关的误差。在这些受控条件下，mpFR的用户将为提高mpFR的准确性和易用性提供反馈。一个由103名21至70岁自由生活的健康成年人组成的方便样本将参与验证阶段，在该阶段，将使用双标签水在7天内测量总能量消耗，并与根据mpfr估计的相同7天的总能量摄入进行比较。预计该项目的成果将是一种创新的工具，可用于人口和临床研究，以提供准确的饮食摄入量数据。

DESCRIPTION (provided by applicant): Dietary intake provides some of the most valuable insights for mounting intervention programs for prevention. However, accurate assessment of diet is problematic. Immerging technology in mobile- telephones (cell phones) with higher resolution pictures, improved memory capacity, and faster processors, allow these devices to process information not previously possible. This project addresses several objectives of RFA-CA-07-032 by using cell phones to capture both visual and recorded detail that is electronically submitted to the researcher; eases respondent burden; and provides accurate estimates of nutrient, food, and supplement intakes. To adequately address these challenges, the research team assembled represents expertise in electrical engineering, computers, information science, nutritional epidemiology, stable isotopes, and statistics. Our goal is to develop, implement, and evaluate a mobile telephone food record (mpFR) that will translate to an accurate account of daily food and nutrient intake among adults. Our first steps include development of imaging software for use with digital photographs that will estimate quantities of foods consumed, modification of the FNDDS nutrient database, and development of user-friendly interfaces. Mobile telephones are widely used throughout the world and can provide a unique mechanism for collecting dietary information that reduces burden on record keepers. Pictures of food can be marked with a variety of input methods that link the item for image processing and analysis for quantification of food consumed. We plan to recruit a sample of adults to consume meals of precisely known composition while using the mpFR under controlled conditions to aid with quantifying the error associated with the food and nutrient output. The users of the mpFR under these controlled conditions will provide feedback for improving the accuracy and ease of use of the mpFR. A convenient sample of 103 free-living, healthy adults between 21 and 70 y will participate in the validation phase where total energy expenditure will be measured over 7 days with doubly labeled water and compared to total energy intake over the same 7 days as estimated from the mpFR. It is anticipated that the outcome of this project will be an innovate tool that can be used in population and clinical based studies to provide accurate dietary intake data.