PS-OCT-based three dimension visual nonnasality decayed tooth checking device and checking method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A PS-OCT, detection device technology, applied in the coupling of optical waveguides, medical science, dentistry, etc., can solve the problems of limiting the accuracy of early caries diagnosis, patient and doctor injury, low resolution, etc. Ease of diagnosis
Inactive Publication Date: 2009-08-26
TIANJIN UNIV +1
View PDF0 Cites 35 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Since early dental caries is caused by demineralization inside the teeth, there are no obvious signs on the surface of the teeth. The doctor's manual diagnosis cannot diagnose early dental caries changes. However, although X-ray imaging technology can find the lesions inside the teeth, its resolution is limited. At the same time, it has the disadvantages of radiation pollution and inaccurate positioning, which seriously limits the accuracy of early dental caries diagnosis, and also causes harm to patients and doctors.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0048] Embodiment 1, detection device
[0049] like figure 1 As shown, the present invention provides a three-dimensional visualization oral caries detection device based on PS-OCT including:
[0050] ——Light source 101: used to irradiate the object under test and generate a measurement light signal with information about the object under test;
[0051] ——Polarization state generator 102: used to adjust the light emitted by the light source to a specific polarization state as required (according to the polarization properties of optical fibers, devices and samples to be measured, so that the obtained output signal is clear);
[0052] ——Fiber optic circulator 103: port 1 is used to receive the light emitted by the light source and output it from port 2;
[0053] ——Self-focusing lens 104: connected to port 2 of the optical fiber circulator, and its exit end face has a certain reflectivity, which is used to irradiate the light output from port 2 of the optical fiber circulator ...
Embodiment 2
[0064] Embodiment 2, detection method
[0065] like figure 2 The overall structure of the PS-OCT 3D visualization platform shown mainly includes two parts: hardware and software.
[0066] The three-dimensional visualization oral caries detection method based on PS-OCT includes in turn:
[0067] 1. Place the tooth sample of the measured object on the displacement platform;
[0068] 2nd, turn on the light source 101, adjust the polarization generator 102, the light that the light source 101 sends is adjusted to a specific polarization state as required (adjust according to the polarization properties of the optical fiber, the device and the sample to be tested, so that the output signal obtained is clear) ;
[0069] 3. Let the light beam emitted by the light source pass through the self-focusing lens 104 to generate a reflected light and a transmitted light, so that the transmitted light is irradiated on the measured object;
[0070] 4. The reflected light carrying the info...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention provides a PS-OCT-based three dimension visual nonnasality decayed tooth checking device and a checking method thereof. The method comprises: a polarized light beam is illuminated on an object to be checked by a self-focusing lens, a reflected light carrying the information of the object to be checked returns along the coming way, the reflected light carrying the information of the object to be checked and the reflected light from the exit end face of the self-focusing lens enter into the two arms of an interferometer and return to a coupler through a Faraday polariscope and perform interference; an optical fiber stretcher is adjusted to realize scanning in the longitudinal direction Z and synchronously the object to be checked is scanned in the horizontal direction X by a displacement platform to obtain the two-dimensional information of a certain cross section; the displacement platform is adjusted for carrying out scanning along the direction Y vertical to the cross section to obtain the plural two-dimensional images of different parts of the representative sample; the data is analyzed and processed with a software to obtain the structure and birefringence information of the object to be checked and reconstruct the three dimensional image thereof, and the result is displayed. The invention can realize high precise checking on the teeth without radiation, thus facilitating diagnosis on the decayed tooth.
Description
【Technical field】: [0001] The invention belongs to the technical field of detection of oral caries diseases, and relates to PS-OCT (polarization-sensitive optical coherence tomography) technology and a method and device for three-dimensional reconstruction of oral caries structures. 【Background technique】: [0002] OCT (Optical Coherence Tomography) technology has developed rapidly in recent years. It is another new biological tissue imaging technology following ultrasound, X-ray computed tomography (XCT), and magnetic resonance imaging (MRI). It integrates confocal microscopy technology and ultra-sensitive detection technology, and combines automatic control and computer image processing technology to realize non-destructive testing of living organisms and obtain high-resolution cross-sectional images of the internal microstructure of biological tissues. [0003] Caries is a common and frequently-occurring disease of the oral cavity worldwide, and it is the main cause of or...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more