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Laser Speckle Imaging of Cerebral Blood Flow

  • Qingming Luo
  • Haiying Cheng
  • Zheng Wang
  • Valery V. Tuchin
Reference work entry

Abstract

Monitoring the spatio-temporal characteristics of cerebral blood flow (CBF) is crucial for studying the normal and pathophysiologic conditions of brain metabolism. By illuminating the cortex with laser light and imaging the resulting speckle pattern, relative CBF images with tens of microns spatial and millisecond temporal resolution could be obtained. In this chapter, a laser speckle imaging (LSI) method for monitoring dynamic, high-resolution CBF is introduced. Its applications on detecting the change in local CBF induced by sensory stimulation and the influence of a chemical agent to CBF are given. To improve the spatial resolution of current LSI, a modified LSI method is proposed. Dynamic of CBF under different temperatures is investigated by both methods and their results are compared with each other.

Key words

laser speckle imaging cerebral blood flow spatio-temporal characteristics 

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Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Qingming Luo
    • 1
  • Haiying Cheng
    • 1
  • Zheng Wang
    • 1
  • Valery V. Tuchin
    • 2
  1. 1.Huazhong University of Science and TechnologyWuhanP.R. China
  2. 2.Saratov State UniversitySaratovRussian Federation

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