Processing methods for photoacoustic Doppler flowmetry with a clinical ultrasound scanner
作者: Thore M. BückingPim J. van den BergStavroula BalabaniWiendelt SteenbergenPaul C. BeardJoanna Brunker
作者单位: 1University College London
2University of Twente
刊名: Journal of Biomedical Optics, 2018, Vol.23 (2), pp.026009-026009
来源数据库: SPIE-the International Society for Optical Engineering
DOI: 10.1117/1.JBO.23.2.026009
关键词: FlowmetryBlood flowPhotoacoustic Doppler effectCross correlationTransducer arrayImage processingMasking
原始语种摘要: Photoacoustic flowmetry (PAF) based on time-domain cross correlation of photoacoustic signals is a promising technique for deep tissue measurement of blood flow velocity. Signal processing has previously been developed for single element transducers. Here, the processing methods for acoustic resolution PAF using a clinical ultrasound transducer array are developed and validated using a 64-element transducer array with a −6 dB detection band of 11 to 17 MHz. Measurements were performed on a flow phantom consisting of a tube (580 μ m inner diameter) perfused with human blood flowing at physiological speeds ranging from 3 to 25 mm / s. The processing pipeline comprised: image reconstruction, filtering, displacement detection, and masking. High-pass filtering and background subtraction were...
全文获取路径: SPIE  (合作)
影响因子:2.881 (2012)

  • scanner 扫描设备
  • processing 加工
  • Doppler 多普勒
  • photoacoustic 光声的
  • transducer 转换器
  • subtraction 减法
  • masking 蒙片法
  • phantom 受精台
  • reconstruction 复原
  • filtering 滤波