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Method and equipment for measuring bone mineral density through oral cavity cone beam CT

A cone beam, bone density technology, used in radiological diagnostic instruments, medical science, dental radiological diagnosis, etc., can solve problems such as the inability to directly obtain the density image of bone tissue, affecting the success rate of surgery, and errors.

Pending Publication Date: 2021-04-27
LARGEV INSTR CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the present invention aims to provide a method and equipment for measuring bone density through oral cone beam CT to solve the problem that the density image of bone tissue cannot be directly obtained in the prior art. Due to the lack of accurate bone density values ​​as an accurate reference, It is easy to cause large errors and affect the success rate of surgery

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  • Method and equipment for measuring bone mineral density through oral cavity cone beam CT
  • Method and equipment for measuring bone mineral density through oral cavity cone beam CT
  • Method and equipment for measuring bone mineral density through oral cavity cone beam CT

Examples

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Effect test

Embodiment 1

[0088] A method for measuring bone density by oral cone beam CT, comprising the steps of:

[0089] S1, sending X-rays to the scanned body from different angles through the oral cone beam CT equipment, so as to obtain the projection information of the scanned body at different angles;

[0090] S2. Obtain high-energy X-rays and low-energy X-rays passing through the scanned body, respectively;

[0091] S3. The processing unit separately acquires high-energy X-ray signals and low-energy X-ray signals passing through the scanned body, and uses an image reconstruction algorithm to obtain a bone tissue density image.

[0092] In this embodiment, the method for measuring oral bone density, in step S3, also includes:

[0093] According to the reconstruction results of the projection data of the high-energy X-ray and the low-energy X-ray under the high-voltage exposure condition and the low-voltage exposure condition respectively, the decomposition coefficient C of bone tissue is respe...

Embodiment 2

[0110] A method for measuring bone density by oral cone beam CT, comprising the steps of:

[0111] S1, sending X-rays to the scanned body from different angles through the oral cone beam CT device, thereby obtaining the projection information of the scanned body at different angles; in step S1, including: two ray sources; one of the ray sources Under high-voltage exposure conditions, high-energy X-rays are sent to teeth to obtain a set of high-energy attenuation data; another ray source sends low-energy X-rays to teeth under low-voltage exposure conditions to obtain a set of low-energy attenuation data;

[0112] S2. Obtain high-energy X-rays and low-energy X-rays passing through the scanned body, respectively;

[0113] S3. The processing unit separately acquires high-energy X-rays and low-energy X-rays passing through the scanned body, and uses an image reconstruction algorithm to obtain a bone tissue density image.

Embodiment 3

[0115] A method for measuring bone density by oral cone beam CT, comprising the steps of:

[0116] S1, sending X-rays to the scanned body from different angles through the oral cone beam CT device, thereby obtaining the projection information of the scanned body at different angles; in step S1, including: a ray source; during one scanning process, Send X-rays to the scanned object under high-voltage exposure conditions to obtain a set of high-energy attenuation data; in another scanning process, send X-rays to the scanned object under low-voltage exposure conditions to obtain a set of low-energy attenuation data;

[0117] S2. Obtain high-energy X-rays and low-energy X-rays passing through the scanned body, respectively;

[0118] S3. The processing unit separately acquires high-energy X-rays and low-energy X-rays passing through the scanned body, and uses an image reconstruction algorithm to obtain a bone tissue density image.

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Abstract

The invention discloses a method and equipment for measuring the bone mineral density through oral cavity cone beam CT. The method for measuring the bone mineral density comprises the following steps that S1, high-energy X-rays and low-energy X-rays are sent to a scanned object; S2, the high-energy X-rays and the low-energy X-rays which penetrate through the scanned object are received through a ray receiving mechanism; and S3, a processing unit obtains the high-energy X-rays and the low-energy X-rays penetrating through the scanned object, and a density image of the bone tissue is obtained through an image reconstruction algorithm. By means of the method, the density image of the bone tissue can be obtained, and therefore the problem that in the prior art, an oral clinician needs to observe a dental film of a patient with naked eyes, oral jaw bone mineral density evaluation is conducted according to the sparse degree of spatial arrangement of bone trabecula in a reconstructed image, and consequently bone mineral density accuracy evaluation is poor in accuracy is solved.

Description

technical field [0001] The invention relates to the technical field of medical equipment, and mainly relates to a method and equipment for measuring bone density through oral cavity cone beam CT. Background technique [0002] Dental implant is by far the most ideal way to restore missing teeth, and its implementation process is also quite complicated. Before dental implantation, patients first need to perform radiographic examinations on the pre-implantation site for various evaluations. Among them, the bone density assessment of the implantation area is How to measure the bone density of the jaw accurately, effectively and practically is the key step to achieve the success of dental implant, which plays a very important guiding role in the formulation of implant and periodontal surgery and the judgment of prognosis. In addition, oral bone loss is an important factor affecting the retention of teeth and the success of denture restoration. studied by measuring the bone densi...

Claims

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Application Information

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IPC IPC(8): A61B6/14
CPCA61B6/505A61B6/5217A61B6/51
Inventor 吴宏新王亚杰张文宇何艾静张康平孙宇王继斌
Owner LARGEV INSTR CORP LTD
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