Effects of contact force on Near Infrared Spectroscopy measurements of human muscle tissue

近红外光谱(NIRS)设备能够非侵入性地测量血红蛋白，两者 氧合(O2Hb)和脱氧(HHb)，通过向组织发射近红外光并测量 漫反射。这些数据与感兴趣的学术研究人员、临床医生和运动员有关 在监测血流动力学方面。所有NIR设备都受接触力和O2Hb计算值的影响 当使用或多或少的力来固定近红外光电探测器时，HHB会发生变化。据推测，这些变化 这是由于组织中光吸收和散射的相对量的变化造成的。接触的影响 力在科学文献中是被承认的，但只有通过避免过度的外力才能得到补偿 或者施加类似的接触力。目前，不同作用力导致的NIRS数据的确切变化是 未知。我们相信，如果测量接触力和接触力，我们将提高重复性和可靠性 整合到近红外线设备中。重复性和可靠性对于任何 监测设备，尤其是临床或运动监测设备的关键。在这个项目中，我们将 设计并构建了一种能够测量通过近红外测力装置施加的力的测量系统 我们将使用该装置来量化接触力对近红外数据的影响。

Near Infrared Spectroscopy (NIRS) devices are capable of non-invasively measuring hemoglobin, both oxygenated (O2Hb) and deoxygenated (HHb), by emitting near infrared light into tissue and measuring the diffuse reflectance. These data are relevant to academic researchers, clinicians and athletes who are interested in monitoring hemodynamics. All NIRS devices are influenced by contact force and calculated values of O2Hb and HHb change when more or less force is used to fix a NIRS optode in place. Presumably, these changes result from changes in relative amounts of light absorption and scattering in the tissue. The effects of contact force are acknowledged in scientific literature, but only compensated for by avoiding excessive external force or applying a similar contact force. Currently, the exact changes in NIRS data resulting from varied force are unknown. We believe that repeatability and reliability will be improved if contact force is measured and incorporated into NIRS devices. Repeatability and reliability are extremely important and useful for any monitoring device, and particularly critical for clinical or sports monitoring devices. In this project, we will design and construct a measurement system capable of measuring force applied through the NIRS device and we will use the device to quantify the effects of contact force on NIRS data.