Laser speckle blood stream imaging processing system and method

A laser speckle and imaging processing technology, which is applied in medical science, diagnosis, diagnostic recording/measurement, etc., can solve the problems of high cost and power consumption, high processing capacity requirements, etc., and achieve the effect of low power consumption

Active Publication Date: 2012-02-22
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

The disadvantage of the DSP solution is that the processing capability of the DSP is very high, and the high-performance DSP with a clock frequency of about 800MHZ can be competent, so the cost and power consumption are relatively high.

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  • Laser speckle blood stream imaging processing system and method
  • Laser speckle blood stream imaging processing system and method
  • Laser speckle blood stream imaging processing system and method

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Embodiment Construction

[0051] Depend on figure 1 As shown, the structural block diagram of the laser speckle blood flow imaging system involved in the present invention is briefly described, which is composed of a laser lighting part, image acquisition, processing and display modules. The laser illumination system consists of a helium-neon laser, a beam expander lens, and a sample stage. The laser light emitted by the laser is irradiated onto the sample platform after being expanded by the beam expander lens. After the image is collected by the CCD, it is cached in the memory, and at the same time, the processing core part reads the original image from the memory for processing, and the flow velocity image obtained after processing is sent to the display part for display.

[0052] figure 2 The laser speckle blood flow imaging SOC system based on FPGA or ASIC of the present invention is described. The acquisition control unit of the CCD image sensor, the original image buffer control unit, the la...

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Abstract

The invention discloses a laser speckle blood stream imaging processing system and method based on SOC (System on Chip) / IP (Internet Protocol) solution. The process of acquiring, processing and displaying a laser speckle blood stream image is completely implemented by a hardware circuit; and a multistage production line technique and a parallel processing unit are introduced into the design of the processing core, so that the system can implement laser speckle blood stream imaging real-time processing at video rate at lower clock frequency (about 50MHz). The scheme greatly reduces the power consumption and volume of the laser speckle blood stream imaging system, and provides a design method of a portable laser speckle blood stream imaging instrument. The scheme is implemented by an IP core designed according to hardware description language, and can be implemented by a discrete circuit element, an FPGA (field programmable gate array) and an ASIC (application-specific integrated circuit) chip.

Description

technical field [0001] The invention relates to a laser speckle blood flow imaging processing system and method, which are applied to two-dimensional blood flow distribution monitoring at a real-time video rate. Background technique [0002] Blood flow velocity is one of the very important functional metabolic parameters in the process of life activities. Dynamically monitoring the temporal and spatial changes of blood flow velocity is of great significance for the study of physiological changes in biological tissues, functional activities and drug efficacy evaluation. [0003] In the detection of blood flow in biological tissues, the existing methods all have many deficiencies. Indirect measurement methods, such as local tissue impedance plethysmography, photoelectric reflection plethysmography, and multipoint temperature measurement, have low spatial resolution. Direct measurement methods, such as blood cell fluorescence tracer in vivo observation method, hydrogen ion d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0285
Inventor 李鹏程骆清铭蒋超
Owner HUAZHONG UNIV OF SCI & TECH
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