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Device for the detection and characterization of biological tissue

A technology for biological organization and characterization, applied in diagnostic recording/measurement, components of color TV, components of TV systems, etc., can solve problems such as fragile cost, high light intensity, and bulkiness

Active Publication Date: 2006-09-06
SOPRO SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The disadvantage of these filters is that they require bulky and fragile expensive equipment
The light intensity must be high, which can cause parasitic fluorescence emissions that degrade the signal-to-noise ratio and block detection of relevant signals

Method used

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  • Device for the detection and characterization of biological tissue
  • Device for the detection and characterization of biological tissue

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Experimental program
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Embodiment Construction

[0040] The device of the invention shown in FIG. 1 includes a xenon lamp 1 powered by a current generator 3. The non-monochromatic light provided by the xenon lamp 1 is filtered by the filter 4 after leaving the xenon lamp, and the filter 4 can maintain the radiation waveband extending from ultraviolet light to the vicinity of visible light. These light radiations pass through the waveguide 5 and continuously irradiate biological tissues, here the teeth 7 of the patient. The waveguide 5 is passed through a longitudinal channel centered on the axis xx', and the color camera 11 can photograph the tooth 7 through the channel.

[0041] The camera 11 is connected to a signal processing device 13 which is connected to a video display device 15.

[0042] In this embodiment, the optical filter 4 allows the wavelength band concentrated around 370 nm to pass, and as figure 2 As shown, a part of this frequency band includes part A in the visible light range.

[0043] As we all know, under th...

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PUM

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Abstract

Method for detection and location of a difference in density and / or structure and / or chemical composition of a biological tissue (7) which is subjected to continuous illumination in a first determined band of frequencies, causing the former to generate a phenomenon of fluorescence, autofluorescence or luminescence in a second band of frequencies. The method includes the following stages: the biological tissue thus illuminated is visually captured by color video elements provided with image sensors with a mosaic of pixels provided with additional color filters; for each image point thus obtained 1) information relating to the energy received by each pixel is collected in order to reconstitute an image of the biological tissue (7), b) amplification occurs for the signal corresponding to the energy received in the second frequency band in order to characterize the biological tissue (7) difference or to cause the image thus obtained to appear.

Description

Technical field [0001] The invention relates to a method and equipment for detecting, locating and characterizing differences in density, structure or chemical composition of biological tissues. Background technique [0002] In the prior art, a variety of methods have been proposed to use auto-fluorescence of tissues containing endogenous chromophores or fluorescence generated by applied dyes or exogenous chromophores to detect or indicate physiological sources. (physiological origin) or tissue origin (histological origin) method of tissue difference, regardless of whether it is pathological. [0003] Based on the principle that the chromophore content varies according to whether the measured area is healthy or damaged, real-time fluorescence mapping of living tissue can be obtained. [0004] This method has been used to directly observe decay damage on hard tissues (such as tooth enamel) and soft tissues (such as skin or oral mucosa), or to observe the thoracic cavity or gastric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00H04N5/14G06T5/00G06T5/10G06T7/00
CPCG06T2207/10016G06T5/001G06T7/0012G06T5/10G06T7/402A61B5/0088G06T2207/30036G06T5/008G06T2207/10024G06T5/94G06T7/42A61B5/00A61K49/00
Inventor 阿兰·马聚尔弗朗西斯·迪耶拉
Owner SOPRO SA