激光与光电子学进展, 2019, 56 (16): 161701, 网络出版: 2019-08-05 复制并引用该论文  本文已被引 3 次  被引通知

图 & 表

图 1. 光声信号激发与探测示意图

Fig. 1. Diagram of photoacoustic signal excitation and detection

下载图片 查看原文

图 2. 光声成像技术实验装置图

Fig. 2. Experimental system of photoacoustic imaging

下载图片 查看原文

图 3. 系统分辨率测量。(a)系统分辨率示意图;(b)吸收体光声信号

Fig. 3. System resolution measurement. (a) System resolution diagram; (b) photoacoustic signal of absorber

下载图片 查看原文

图 4. 血管外径测量图。(a)游标卡尺测量PVC管外径;(b)游标卡尺测量血管外径;(c)血管模型构建

Fig. 4. Measurement of outer diameter of blood vessel. (a) Measurement of outer diameter of PVC tube with vernier caliper; (b) measurement of inner diameter of vessel with vernier caliper; (c) establishment of vascular model

下载图片 查看原文

图 5. 血管内外径测量结果。(a)血管外径随压力变化图;(b)血管壁厚OCT测量结果;(c)血管外径、壁厚,以及内径测量结果

Fig. 5. Measured inner diameter and outer diameter of blood vessel. (a) Variation of outer diameter of blood vessel with pressure; (b) measured vascular wall thickness by OCT; (c) measured results of external diameter, wall thickness, and inner diameter of blood vessels

下载图片 查看原文

图 6. 血管光声信号测量。(a)不同压力作用下的血管光声信号;(b)血管内径的实际测量值和光声测量值

Fig. 6. Measurement of vessel photoacoustic signal. (a) Photoacoustic signal of vessel under different pressures; (b) actual measured value and photoacoustic measured value of inner diameter of blood vessel

下载图片 查看原文

表 1像素点归一法测得的不同压力下的血管外径值

Table1. Outer diameter of blood vessel under different pressures measured by pixel point normalization

P /kPa Npvc /pixel Dpvc_out /mm Dpixel /mm Nvessel /pixel Dvessel_out /mm 1.24 33 4.00±0.02 0.12±0.0006 33±1 4.00±0.14 2.48 33 4.00±0.02 0.12±0.0006 47±2 5.68±0.27 3.72 33 4.00±0.02 0.12±0.0006 50±1 6.05±0.15 4.96 33 4.00±0.02 0.12±0.0006 53±2 6.41±0.27 6.20 33 4.00±0.02 0.12±0.0006 55±1 6.66±0.15

查看原文

表 2像素点归一法测得的在不同压力下的管壁厚度及血管内径值

Table2. Wall thickness and inner diameter of blood vessel under different pressures measured by pixel point normalization

P /kPa Nvessel /pixel Dvessel_out /mm Tvessel_w /mm Dvessel_inner /mm 1.24 85±1 4.00±0.14 0.53±0.006 2.94±0.16 2.48 80±2 5.68±0.27 0.50±0.012 4.68±0.29 3.72 72±2 6.05±0.15 0.45±0.012 5.15±0.16 4.96 65±1 6.41±0.27 0.40±0.006 5.61±0.29 6.20 55±1 6.66±0.15 0.34±0.006 5.98±0.16

查看原文

表 3光声成像技术测得的在不同压力下的血管内径值

Table3. Inner diameter of blood vessel under different pressures measured by photoacoustic imaging technique

P /kPa τ /μs Dvessel_inner_PA /mm 1.24 2.20±0.09 3.30±0.14 2.48 3.29±0.11 4.94±0.17 3.72 3.52±0.13 5.28±0.19 4.96 3.76±0.09 5.63±0.14 6.20 3.91±0.12 5.87±0.18

查看原文

章小曼, 翁存程, 朱莉莉, 蔡坚勇, 吴淑莲, 李志芳, 吴华钦, 李晖. 光声弹性成像技术在动脉血压监测中的应用研究[J]. 激光与光电子学进展, 2019, 56(16): 161701. Xiaoman Zhang, Cuncheng Weng, Lili Zhu, Jianyong Cai, Shulian Wu, Zhifang Li, Huaqin Wu, Hui Li. Application of Photoacoustic Elastography Technique in Arterial Blood-Pressure Monitoring[J]. Laser & Optoelectronics Progress, 2019, 56(16): 161701.