KS205D-Ⅰ Doppler phantoms and simulated blood flow control system

System Specifications 1. Doppler phantom housing transverse dimension: 200mm × (80 ~ 100) mm Depth: 170mm. 2. Acoustic window size: 70um × 200mm × (80 ~ 100) mm 3. Ultrasound tissue mimicking (TM) material velocity: (1540 ± 10) m / s (23 ℃) Attenuation: The standard set for (0.5 ± 0.05) dB / (cm · MHz) (23 ℃) (such as dedicated to the detection of the operating frequency At the high end or the low end of Doppler instrument, the choice of the attenuation coefficient of the material above or below the value of TM, especially customized 4. ultrasound vascular density imitation:. 0.930 (g / cm3) Material Velocity: 1555 (m / s) Material sound attenuation coefficient: frequency measurement varies with location, as shown in Table 1; diameter: standard sleeve for 8mm and 4mm, also in the range of 0.5 to 32mm chosen by a factor of 2 other sizes made subject to special ; wall thickness: standard sleeve wall thickness of the inner diameter of 8mm 1.6mm; 0.8mm internal diameter of the inner diameter of 4mm wall thickness change, thickness changed as shown in Table 2; the angle between the plane of the acoustic window: standard sleeve 30 ° (2 oblique sections), but also the choice of 45 ° and 60 °, subject to any special build. Table 2 imitation vessel diameter and wall thickness of the correspondence between the inner diameter (mm) 4 8 thickness (mm) 0.8 1.6 5. ultrasound imitation blood density : (1.03 ± 0.04) g / cm3 speed of sound: (1570 ± 30) m / s Attenuation: <0.1dB / (cm · MHz) backscatter: (1 ~ 10) × 10-9 × f4 / (cm · MHz4 · Sr) Viscosity: (4 ± 0.4) × 10-3Pa · s 6. current pump revolutions: 0.2 ~ 300RMP Number of heads: 1 or 2 chucking silicone rubber hose: wall thickness of 1.5mm, an inner diameter of 0.8,1.6 , 3.1,4.8,6.4,7.9mm optional flow range: 0.014 ~ 1140ml / min control switch: left / stop / right speed control: Adjustable potentiometer fluid via: only via pipeline supply: Voltage 220 ± 10% AC, frequency 50 ~ 60Hz Working environment: Temperature 0 ~ 45 ℃, relative humidity <80% 7. Controller (optional) pulse parameters: the width and interval were set minimum pulse width: 0.1s pulse minimum interval: 0.1s 8. Rotor The number of flow meter: 2, used in tandem Range: 1 ~ 10L / h (ie 0.278ml / s ~ 2.78ml / s) 6 ~ 60L / h 9. imitation (ie 1. 67ml / s ~ 16.7ml / s?) Blood Tank Capacity: 500ml; 10. buffer capacity: 500ml;