高考数学配方法.ppt

图6看起来和心电图差不多，有相似的波峰和波谷。但是这两个测试的是不同的参数。心电图记录的是由依附在皮肤上的电极测量到的心脏的活动。 心电图测量的是表皮微小的电信号变化，不能直接测量心脏的泵血功能。而LDV跟踪显示的是心脏泵动的直接结果。 tests measure different parameters. ECG charts are records of the electrical activity of the heart as measured by electrode pairs (leads) attached to the skin. An ECG measures small electrical change on the skin surface due to depolarization of the heart muscle, and thus does not directly measure actual mechanical effects of the pumping of the heart. On the other hand, the LDV trace in Fig. 6 is a direct result of the vibration induced due to the pumping action of the heart. From an engineering standpoint, the amplitudes of vibration of the skin and tissue surrounding blood vessels are directly related to the forcing function (i.e. blood pressure). Therefore, the vibration peaks in each cycle can indicate real-time variations in peak blood pressures. Important information can potentially be extracted in real time from this non-contact ability to measure relative changes in blood pressure. For example, simultaneous measurements of vibrations on the left and right wrists can provide information on differences in pressures and arrival times of waves between the left and right sides. Problems such as abnormalities in the aorta can lead to such differences. Simultaneous non-contact measurements could address potential problems associated with sequential conventional pressure measurements 激光技术 在医学中的应用 2014-3-12 参考文献： [1]高永春，许贺菊，等.激光技术在医学中的应用与进展[J].华北煤炭医学院学报，2009,11（3）：330-332. [2]李艳华，康志龙，胡黎明.半导体激光器在医疗领域的新应用[J].激光杂志，2010，,31（6）：73-75. [3]李海涛，杨继庆.激光生物效应及医学应用研究[J].第四军医大学学报，2007,28（14）：1341-1342. [4]Oliver D E,Rohrbaugh J W,Papadopoulos C.Novel Applications of Laser Doppler Vibration Measurements to Medical Imaging[J].Sens and Imaging,2013,14:13-28. [5]刘昊，陈美兰，郭仁舆.激光荧光检查法在肿瘤定位诊断中的应用[J].西安交通大学学报(医学版),2007,28(4):455-457. 激光在临床诊断治疗中的应用 ——激光医学 激光医学应用领域 激光医学 基础医学研究 诊断 治疗 激光技术在医学中的应用 激光在基础医学研究中的应用：主要是通过激光与人体器官组织、细胞和生物分子的相互作用来研究激光的生物效应。 激光诊断：以激光作为信息载体，