中国激光, 2018, 45 (11): 1107001, 网络出版: 2018-11-15
基于光声相关谱法的血液流速测量 下载: 952次
Measuring Velocity of Blood Flow Based on Photoacoustic Correlation Spectroscopy
图 & 表
图 2. 测量血液流速的光声实验系统示意图
Fig. 2. Schematic of the experimental system for measuring velocity of blood flow
图 3. 基于PACS方法的血液流速测量结果。(a)模拟血管中血液的图像;(b)归一化的P(t)信号;(c) P(t)自相关数据及拟合曲线
Fig. 3. Blood flow velocity measured by PACS method. (a) Photoacoustic image of blood flow phantom; (b) normalized P(t) signal; (c) calculated and fitted autocorrelation curves of P(t)
图 4. 在重复频率为2 kHz及不同血液流速下测得的P(t)的自相关数据及拟合曲线。(a) 1 mm/s;(b) 2 mm/s;(c) 3 mm/s;(d) 4 mm/s;(e) 5 mm/s;(f) 6 mm/s
Fig. 4. Calculated autocorrelation data and fitted curves at repetition frequency of 2 kHz and different velocities of blood flow. (a) 1 mm/s; (b) 2 mm/s; (c) 3 mm/s; (d) 4 mm/s; (e) 5 mm/s; (f) 6 mm/s
图 5. 在2 mm/s血液流速及不同激光重复频率下测得的P(t)的自相关数据及拟合曲线。(a) 0.5 kHz;(b) 1 kHz;(c) 2 kHz;(d) 3 kHz;(e) 4 kHz;(f) 5 kHz
Fig. 5. Calculated autocorrelation data and fitted autocorrelation curves at velocity of blood flow of 2 mm/s and different laser repetition frequencies. (a) 0.5 kHz; (b) 1 kHz; (c) 2 kHz; (d) 3 kHz; (e) 4 kHz; (f) 5 kHz
图 6. (a)渡越时间随设定流速的变化及(b)测量流速与实际流速
Fig. 6. (a) Dependence of the flow time on the designed velocity and (b) the measured velocities versus the actual velocities
潘柳华, 张向阳, 李中梁, 南楠, 步扬, 陈艳, 王瑄, 王向朝. 基于光声相关谱法的血液流速测量[J]. 中国激光, 2018, 45(11): 1107001. Pan Liuhua, Zhang Xiangyang, Li Zhongliang, Nan Nan, Bu Yang, Chen Yan, Wang Xuan, Wang Xiangzhao. Measuring Velocity of Blood Flow Based on Photoacoustic Correlation Spectroscopy[J]. Chinese Journal of Lasers, 2018, 45(11): 1107001.