Cerebral blood flow measuring device, system and helmet

A measuring device and technology of cerebral blood flow, applied in the field of near-infrared imaging, can solve problems such as narrow dynamic range and large volume, and achieve the effects of reducing sampling time, improving signal-to-noise ratio, and reducing dynamic artifacts

Pending Publication Date: 2016-12-21
SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing autocorrelation spectrum blood flow measurement devices using this technology usually use avalanche diodes as detectors, which have disadvantages such as large volume and narrow dynamic range.

Method used

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  • Cerebral blood flow measuring device, system and helmet
  • Cerebral blood flow measuring device, system and helmet
  • Cerebral blood flow measuring device, system and helmet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides a device for measuring cerebral blood flow, for example, it is applied to a comprehensive blood flow (blood flow rate) measurement of the visual cortex of the brain, such as figure 1 As shown, the cerebral blood flow measurement device 100 includes at least one set of light source devices 1 and at least two groups of detection devices 2 .

[0043]The light source device 1 includes a single longitudinal mode crystal laser 11 , an optical switch 12 and an irradiation fiber 13 . The output end of the single longitudinal mode crystal laser 11 is connected to the input end of the optical switch 12 through an optical fiber, and is used for generating and outputting laser light with a long coherence length. Preferably, the long coherence length may be greater than 50 meters. The optical switcher 12, whose output end is connected with at least two irradiation optical fibers 13, is used to switch an input laser beam into at least two output laser beams....

Embodiment 2

[0050] This embodiment provides a helmet, which includes the cerebral blood flow measurement device 100 of the above-mentioned embodiment 1 and a casing, and the cerebral blood flow measurement device 100 is located inside the casing.

[0051] The above-mentioned helmet, by installing the cerebral blood flow measurement device inside the shell as a whole, since the cerebral blood flow measurement device and the external device are all connected electrically / wirelessly, there is no need to use a bulky optical fiber connection, and the cerebral blood flow measurement device itself has The advantages of small size, so the helmet has the advantages of light weight, small size, and portability, which improves the comfort of the helmet.

Embodiment 3

[0053] This embodiment provides a cerebral blood flow measurement system, such as Figure 4 As shown, the cerebral blood flow measurement device 100 , the data acquisition device 200 and the pulsed multiphoton counting device 300 of the first embodiment above are included.

[0054] The data acquisition device 200, its input end is connected with the output end of the silicon photomultiplier tube 23 of the cerebral blood flow measurement device 100, and its output end is connected with the input end of the pulse type multiphoton counting device 300, which is used for the silicon photomultiplier tube 23 The output analog signal is converted into a digital signal by analog-to-digital conversion and output. Preferably, the data acquisition device 200 includes an A / D data acquisition card.

[0055] The pulsed multiphoton counting device 300 is used for performing pulsed multiphoton counting and obtaining cerebral blood flow data. Preferably, the processing performed by the pulsed...

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Abstract

The invention discloses a cerebral blood flow measuring device, a cerebral blood flow measuring system and a helmet, wherein the cerebral blood flow measuring device comprises at least one group of light source device and at least two groups of detection devices; the light source device comprises a single longitudinal mode crystal laser, an optical switch and radiation optical fibers; an output end of the single longitudinal mode crystal laser is connected to an input end of an optical switch; an output end of the optical switch is connected to the at least two radiation optical fibers so as to switch a beam of inputted laser light into at least two beams of laser light and output the at least two beams of laser light; by virtue of the radiation optical fibers, the laser light is transmitted to a to-be-measured part; each detection device comprises a single mode fiber, a collimation device and a silicon photomultiplier; by virtue of the collimation device, received laser light, which is outputted by the single mode fiber, is uniformly transmitted to a receiving window of the silicon photomultiplier; and the silicon photomultiplier is used for converting a received optical signal into an electric signal and for outputting the electric signal. The cerebral blood flow measuring device disclosed by the invention has the advantages of being high in time sampling rate, high in signal to noise ratio, small in volume, good in portability and the like.

Description

technical field [0001] The invention relates to the technical field of near-infrared imaging, in particular to a cerebral blood flow measurement device, system and helmet. Background technique [0002] With the improvement of living standards, there are more and more "wealthy diseases". Cardiovascular and cerebrovascular diseases caused by poor blood flow have brought great harm to people. In diagnosis and treatment, early detection, early treatment, and treatment effect tracking Therefore, in modern medicine, blood flow measurement has attracted more and more attention. For example, in the field of brain science, studies have found that when a specific task is performed, the blood flow of the microvascular in the corresponding part of the cerebral cortex will increase significantly and rapidly. If there is a problem with the neural pathways or self-regulation function of blood flow in the brain, there will be abnormalities in blood flow measurement, which indicates that th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/026A61B5/00
CPCA61B5/0064A61B5/0261A61B5/4064A61B5/6803A61B5/7203A61B5/7221
Inventor 邢晓曼戴亚康
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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