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Measuring method of skin blood perfusion

A measurement method and technology of skin blood flow, which is applied in the field of measurement of skin blood flow perfusion, can solve problems such as unsatisfactory correction effect of flow rate monitoring results, inconsistent state, and flow rate cannot be kept absolutely stable.

Active Publication Date: 2021-07-27
亿慈(上海)智能科技有限公司
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Problems solved by technology

In order to reduce the influence of this error, laser speckle imaging equipment on the market adopts a calibration method, introducing a fluid with a known flow rate as a reference for monitoring the flow rate. However, the defect of this method is that the reference fluid is different from the The state of blood flow is not consistent, and the flow rate cannot be kept absolutely stable. The correction effect of this method on the flow rate monitoring results is not ideal.

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  • Measuring method of skin blood perfusion
  • Measuring method of skin blood perfusion
  • Measuring method of skin blood perfusion

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Embodiment

[0032] Blood perfusion refers to the amount of blood flowing into tissues and organs per unit time. For skin tissue, the factors affecting skin perfusion include the density of blood vessels, the diameter of blood vessels, and the blood flow velocity in blood vessels. The first two factors are a constant. , is determined by the distribution of blood vessels in the skin tissue, so the measurement of the blood flow velocity of the subcutaneous blood vessels can directly reflect the amount of blood perfusion in the skin. Use v(x, y, t) to represent the blood flow velocity at (x, y) at time t, at time T 0 Inside, the surface area is S 0 The blood perfusion of the skin tissue can be expressed as:

[0033] Q=∫∫v(x,y,t)dtds

[0034] The following is a detailed introduction and derivation of the joint analysis method of ultrasonic Doppler and laser speckle proposed by the patent of the present invention:

[0035] When the ultrasonic wave interacts with the carrier medium, the ampli...

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Abstract

The technical solution of the present invention discloses a method for measuring skin blood perfusion, which combines the function of ultrasonic Doppler technology for fluid velocity measurement and the function of laser speckle technology for real-time monitoring of two-dimensional flow velocity. The actual speed directly reflects the amount of blood perfusion in the skin tissue. At the same time, the absolute value of blood perfusion can be directly measured; the two-dimensional real-time high-resolution imaging of skin blood perfusion can be realized; the value measured by the skin blood perfusion measurement method of the present invention can be used as a skin diagnosis. objective indicators.

Description

technical field [0001] The invention relates to the technical field of skin measurement, in particular to a method for measuring skin blood perfusion. Background technique [0002] Microcirculation is a kind of body fluid (blood, lymph, interstitial fluid) circulation that directly participates in the exchange of cells and tissues. In the circulatory system, only the walls of arterioles, capillaries, venules, and lymphatic capillaries facilitate the passage of substances and are suitable for providing oxygen and other nutrients to tissues and cells for material exchange. The integrity of the function, shape and metabolism of the microcirculation is an indispensable condition for maintaining the normal function of human organs. Through the study of microcirculation, it is convenient to further understand the functions of human tissues, understand the pathogenesis of diseases, and benefit the research of disease prevention, diagnosis and treatment. Skin blood perfusion refer...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B8/06A61B5/026A61B5/00
CPCA61B5/0064A61B5/0261A61B5/441A61B5/4866A61B8/06A61B8/488A61B8/5261
Inventor 刘祺李源琦
Owner 亿慈(上海)智能科技有限公司
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