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
- Laser & Optoelectronics Progress
- Vol. 56, Issue 16, 161701 (2019)
Fig. 1. Diagram of photoacoustic signal excitation and detection
Fig. 2. Experimental system of photoacoustic imaging
Fig. 3. System resolution measurement. (a) System resolution diagram; (b) photoacoustic signal of absorber
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
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
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
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Table 1. Outer diameter of blood vessel under different pressures measured by pixel point normalization
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Table 2. Wall thickness and inner diameter of blood vessel under different pressures measured by pixel point normalization
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Table 3. Inner diameter of blood vessel under different pressures measured by photoacoustic imaging technique
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