CN113662567A - X-ray bone mineral density measuring system and method combining surface geometry acquisition - Google Patents

X-ray bone mineral density measuring system and method combining surface geometry acquisition Download PDF

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Publication number
CN113662567A
CN113662567A CN202010409980.6A CN202010409980A CN113662567A CN 113662567 A CN113662567 A CN 113662567A CN 202010409980 A CN202010409980 A CN 202010409980A CN 113662567 A CN113662567 A CN 113662567A
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image
ray
visible light
detected object
surface geometry
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周正东
周宁霖
周红
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Zhenjiang Huiying Technology Development Co ltd
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Zhenjiang Huiying Technology Development Co ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/50—Clinical applications
    • A61B6/505—Clinical applications involving diagnosis of bone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/48—Diagnostic techniques
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
    • A61B6/5211—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data
    • A61B6/5229—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image
    • A61B6/5247—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image combining images from an ionising-radiation diagnostic technique and a non-ionising radiation diagnostic technique, e.g. X-ray and ultrasound
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/54—Control of apparatus or devices for radiation diagnosis
    • A61B6/545—Control of apparatus or devices for radiation diagnosis involving automatic set-up of acquisition parameters

Abstract

The invention discloses an X-ray bone mineral density measuring system and method combining surface geometry collection, the system comprises an information collecting device and an information processing device, the information collecting device comprises an X-ray imaging mechanism, a surface geometry collecting mechanism and a visible light imaging mechanism, the X-ray imaging mechanism generates an X-ray image of a detected object, the surface geometry collecting mechanism generates a three-dimensional surface geometry model of the detected object, and the visible light imaging mechanism generates a visible light image of the detected object; the information processing device generates a depth image matched with the X-ray image based on the three-dimensional surface geometric model and the X-ray image, generates a bone tissue and soft tissue base material decomposition coefficient image based on the depth image and the X-ray image, and generates a bone density image based on the bone tissue base material decomposition coefficient image. The invention can obtain accurate bone density images, effectively reduce the radiation dose of the X-ray bone density instrument and reduce the cost of an X-ray bone density measuring system.

Description

X-ray bone mineral density measuring system and method combining surface geometry acquisition
Technical Field
The invention relates to the field of bone mineral density measurement, in particular to an X-ray bone mineral density measurement system and method combining surface geometry acquisition.
Background
Bone mineral density is an important index of bone strength. The dual-energy X-ray bone mineral density measuring system measures bone mineral density through high-energy and low-energy X-ray exposure twice, can be used for detecting bone mass of any part of the whole body, has high accuracy and small harm to human bodies, and is clinically popularized and applied in China. However, because of the requirement of two exposures, the exposure dose is large, the complexity of the equipment is increased, and the price is higher than that of the conventional X-ray imaging equipment. At present, no system and method for realizing bone density measurement through one-time X-ray exposure imaging exist.
Disclosure of Invention
The technical problem to be solved by the present disclosure is to provide a system and a method for measuring bone density by X-ray in combination with surface geometry acquisition, which can achieve quantitative measurement of bone density by one exposure.
The invention adopts the following technical scheme for solving the technical problems:
according to one aspect of the present disclosure, an X-ray bone mineral density measurement system incorporating surface geometry acquisition is provided, comprising an information acquisition device and an information processing device; the information acquisition device comprises an X-ray imaging mechanism, a surface geometry acquisition mechanism and a visible light imaging mechanism, wherein the X-ray imaging mechanism is configured to generate an X-ray image of an object to be detected, the surface geometry acquisition mechanism is configured to generate a three-dimensional surface geometry model of the object to be detected, and the visible light imaging mechanism is configured to generate a visible light image of the object to be detected; the information processing device is in data communication with the information acquisition device and is configured to acquire a visible light image and a three-dimensional surface geometric model of the detected object provided by the surface geometric acquisition mechanism and an X-ray image provided by the X-ray imaging mechanism, and is further configured to generate a depth image matched with the X-ray image based on the three-dimensional surface geometric model and the X-ray image, and is further configured to generate a bone tissue and soft tissue-based material decomposition coefficient image based on the depth image and the X-ray image and is further configured to generate a bone density image based on the bone tissue-based material decomposition coefficient image.
In the X-ray bone mineral density measurement system in combination with surface geometry acquisition, wherein the surface geometry acquisition mechanism is configured as an active surface geometry acquisition mechanism to generate a three-dimensional surface geometry model.
In the X-ray bone mineral density measuring system combined with the surface geometry acquisition, the X-ray imaging mechanism is configured to receive the visible light image and/or the three-dimensional surface geometry model, adjust the collimator shape according to the visible light image and emit X-rays to irradiate the detected object and detect the X-rays penetrating the detected object to generate an X-ray image.
The X-ray bone density measuring system combined with surface geometry acquisition is a bone density measuring system used for including human bodies and other samples, and the detected objects include human bodies and other samples.
In the X-ray bone mineral density measuring system combined with surface geometry acquisition, the system also comprises a voice prompting device, wherein the voice prompting device is in data communication with the information processing device and is used for prompting whether the posture of the detected object is correct or not and prompting whether the identity of the detected object is correct or not when the detected object is a human body.
In the system for measuring the bone mineral density of the X-ray combined with the surface geometric acquisition, the information acquisition device further comprises a certificate information acquisition mechanism which is in data communication with the information processing device and acquires certificate information of a detected person when the detected object is a human body, and the information processing device is further configured to verify the identity of the detected person based on the certificate information of the detected person and the visible light image and/or the three-dimensional surface geometric model.
In the X-ray bone mineral density measuring system combined with surface geometry acquisition, the information processing device is further configured to identify the pose of the detected object according to the visible light image and the three-dimensional surface geometry model of the detected object, further carry out identity verification when the detected object is a human body, if the identity verification fails, do not start X-ray imaging, carry out language prompt through a voice prompt device, if the pose does not meet the detection requirement, correct the pose of the detected object and then start the X-ray imaging; and when the detected object is other samples, correcting the pose of the detected object if the pose does not meet the detection requirement, and then starting X-ray imaging.
In the X-ray bone density measuring system combined with surface geometry acquisition, the system also comprises an image display device, wherein the image display device is in data communication with the information processing device and can display the bone density image and/or the three-dimensional surface geometry model and/or the visible light image and/or the X-ray image and/or the depth image and/or the base material decomposition coefficient image.
According to another aspect of the present disclosure, there is provided an X-ray bone density measurement method combined with surface geometry acquisition, which uses the above-mentioned X-ray bone density measurement system combined with surface geometry acquisition for measurement and processing, the method comprising the steps of:
step 1: the detected object enters an appointed detection area and the pose is adjusted to wait for detection, and when the detected object is a human body, the certificate is placed on a certificate information acquisition mechanism;
step 2: the surface geometry acquisition mechanism generates a three-dimensional surface geometry model and sends the three-dimensional surface geometry model to the information processing device; the visible light imaging mechanism generates a visible light image of the detected object and sends the visible light image to the information processing device; when the detected object is a human body, the certificate information acquisition mechanism acquires the certificate information of the detected person and sends the certificate information to the information processing device;
and step 3: when the detected object is a human body, the identity of the detected person is verified: the information processing device processes the visible light image and the three-dimensional surface geometric model, compares and checks the visible light image and the three-dimensional surface geometric model with certificate information of a detected person, and sends an identity verification result to the image display device and the voice device;
and 4, step 4: the information processing device processes the visible light image and the three-dimensional surface geometric model and identifies and judges the pose of the detected object;
and 5: the X-ray imaging mechanism receives the visible light image and/or the three-dimensional surface geometric model, adjusts the shape of a collimator in the X-ray imaging mechanism according to the visible light image and/or the three-dimensional surface geometric model, then emits X-rays to irradiate the detected object and detects the X-rays penetrating the detected object to generate an X-ray image;
step 6: the information processing device registers the three-dimensional surface geometric model and the X-ray image to obtain a depth image matched with the X-ray image;
and 7: the information processing device carries out material decomposition by using the depth image and the X-ray image to generate a bone tissue and soft tissue base material decomposition coefficient image;
and 8: the information processing device generates a bone density image by using the bone tissue base material decomposition coefficient image according to the following formula:
Ib(x，y)＝BMD*Ibm(x，y)/D(x，y)
wherein, Ib(x, y) represents a bone density image of the subject, BMD represents a bone density of a bone tissue-based material, Ibm(x, y) represents a bone tissue-based material decomposition coefficient image, and D (x, y) represents a depth image;
and step 9: the image display device displays a bone density image and/or a three-dimensional surface geometric model and/or a visible light image and/or an X-ray image and/or a depth image and/or a base material decomposition coefficient image of the detected object.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
the invention can obtain accurate bone mineral density images by combining surface geometric acquisition and X-ray imaging, can effectively reduce the radiation dose of an X-ray bone mineral density measuring system and reduce the cost of the X-ray bone mineral density measuring system.
Drawings
FIG. 1 is a schematic diagram of an X-ray bone densitometry system for human bone densitometry in conjunction with surface geometry acquisition, showing the parts of the bone densitometry system and their connections.
FIG. 2 is a flow chart of an X-ray bone density measurement method incorporating body surface geometry acquisition for body bone density measurement.
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the accompanying drawings.
In the following embodiments, the present invention is illustrated by using an X-ray bone density measurement system and method combining surface geometry acquisition with a human body as an object to be detected as an example, but this should not be construed as limiting the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram of an X-ray bone mineral density measurement system for measuring bone mineral density of a human body, which combines surface geometry acquisition, and the system includes an information acquisition device, an information processing device, an image display device a and an image display device B, and a voice prompt device a and a voice prompt device B.
The information acquisition device comprises an X-ray human body imager, a depth camera A, a depth camera B and a certificate information acquisition mechanism. The X-ray imaging mechanism adopts an X-ray human body imager, and can be configured to receive the visible light image and/or the three-dimensional surface geometric model, adjust the collimator shape according to the visible light image and emit X-rays to irradiate the detected object and detect the X-rays penetrating the detected object to generate an X-ray image. The surface geometry acquisition mechanism and the visible light imaging mechanism adopt a Kinect depth camera, the Kinect depth camera can acquire three-dimensional surface geometry data and visible light images of the detected object at the same time, a pair of depth camera A and depth camera B can be used for generating a complete three-dimensional geometry model of the detected object, and the depth camera can be installed on an X-ray human body imager. The certificate information acquisition mechanism is arranged in the imaging equipment room.
The information processing device is in data communication with the information acquisition device and is capable of obtaining the X-ray image, the three-dimensional surface geometric model, the visible light image and the identity information of the detected person, and the information processing device can also send information to the information acquisition device, for example, instructing the information acquisition device to start acquiring the X-ray image and/or the three-dimensional surface geometric model and/or the visible light image.
The information processing apparatus is also in data communication with an image display apparatus a and an image display apparatus B. The staff side image display device A is arranged in the studio, and the equipment side image display device B is arranged between the imaging equipment so that staff can check detection information and images.
The information processing device is also in data communication with a voice prompt device A and a voice prompt device B. Staff end voice prompt device A sets up at the studio, and equipment end voice prompt device B sets up between imaging device to for example voice prompt or if the staff communicates with the personnel that are detected and use.
The information processing device can be configured to generate a depth image that matches an X-ray image based on the three-dimensional surface geometry model and the X-ray image.
The information processing apparatus can be configured to generate an image of bone tissue and soft tissue-based material decomposition coefficients based on the depth image and the X-ray image.
The information processing apparatus can be configured to generate a bone density image based on the bone tissue-based material decomposition coefficient image.
The information processing apparatus can be configured to identify the pose of the detected person based on the visible light image and the three-dimensional human body surface geometric model, correct the pose of the detected person if the pose does not meet the detection requirement, and then restart X-ray imaging.
The information processing device can be configured to verify the identity of the detected person based on the certificate information of the detected person and the visible light image and/or the three-dimensional surface geometric model, not start X-ray imaging if the identity verification fails, and perform language prompting.
The present disclosure also provides a method of X-ray bone density measurement in conjunction with surface geometry acquisition using the above-described X-ray bone density measurement system in conjunction with surface geometry acquisition for imaging and processing. In the following description, embodiments of the method will be specifically explained, wherein reference numerals are used, but it should be understood that the use of these reference numerals is not limitative, but merely to facilitate the understanding of the technical solutions. In other words, the following method is not limited to being performed using the aforementioned X-ray bone densitometry system and its components in conjunction with surface geometry acquisition.
FIG. 2 is a flow chart of an X-ray bone density measurement method incorporating body surface geometry acquisition for body bone density measurement. The method shown in fig. 2 can obtain accurate bone density images, can effectively reduce the radiation dose of the X-ray bone density instrument, can perform posture identification and identity verification on detected personnel, and can also automatically adjust the collimator of the X-ray imager, and the method comprises the following steps:
step 1: the detected person puts the certificate on the certificate information acquisition mechanism, enters an appointed detection area and adjusts the pose to wait for detection;
step 2: generating a human epidermis geometric model and a visible light image of a detected person by using a depth camera A and a depth camera B and sending the human epidermis geometric model and the visible light image to an information processing device; the certificate information acquisition mechanism acquires electronic information including a head photo of a detected person and sends the electronic information to the information processing device;
and step 3: the information processing device processes the visible light image and/or the human epidermis geometric model, compares and checks the visible light image and/or the human epidermis geometric model with certificate information of a detected person, outputs identity information of the detected person through a studio-side image display device A, and carries out language prompt through voice devices A and B;
and 4, step 4: processing the visible light image and/or the human epidermis geometric model by the information processing device, and identifying and judging the pose of the detected person, (1) if the pose of the detected person meets the detection requirement, entering the step 5; (2) if the pose of the inspected person does not meet the detection requirement, transmitting pose information to the image display device A, the image display device B, the voice prompt device A and the voice prompt device B to prompt the inspected person to correct the pose, rescanning after the inspected person adjusts the pose, and repeating the step 4;
and 5: the X-ray human body imager receives the visible light image and/or the human epidermis geometric model, adjusts the shape of a collimator in the X-ray human body imager according to the visible light image and/or the human epidermis geometric model, then emits X-rays to irradiate the detected person and detects the X-rays penetrating the detected person to generate an X-ray image;
step 6: the information processing device registers the human body surface geometric model and the X-ray image to obtain a depth image matched with the X-ray image;
and 7: the information processing device carries out material decomposition by using the depth image and the X-ray image to generate a bone tissue and soft tissue base material decomposition coefficient image;
and 8: the information processing device generates a bone density image by using the bone tissue base material decomposition coefficient image according to the following formula:
Ib(x，y)＝BMD*Ibm(x，y)/D(x，y)
wherein, Ib(x, y) represents a bone density image of the subject, BMD represents a bone density of a bone tissue-based material, Ibm(x, y) represents a bone tissue-based material decomposition coefficient image, and D (x, y) represents a depth image;
and step 9: the image display device A and/or the image display device B display a bone density image and/or identity information and/or a human epidermis geometric model and/or a visible light image and/or an X-ray image and/or a depth image and/or a base material decomposition coefficient image of the detected person.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. An X-ray bone mineral density measuring system combined with surface geometry acquisition is characterized by comprising an information acquisition device and an information processing device, wherein the information acquisition device comprises an X-ray imaging mechanism, a surface geometry acquisition mechanism and a visible light imaging mechanism, the X-ray imaging mechanism is configured to generate an X-ray image of a detected object, the surface geometry acquisition mechanism is configured to generate a three-dimensional surface geometry model of the detected object, and the visible light imaging mechanism is configured to generate a visible light image of the detected object; the information processing device is in data communication with the information acquisition device and is configured to acquire the three-dimensional surface geometry model provided by the surface geometry acquisition mechanism, the visible light image provided by the visible light imaging mechanism and the X-ray image provided by the X-ray imaging mechanism, and is further configured to generate a depth image matched with the X-ray image based on the three-dimensional surface geometry model and the X-ray image, and is further configured to generate a bone tissue and soft tissue-based material decomposition coefficient image based on the depth image and the X-ray image, and is further configured to generate a bone density image based on the bone tissue-based material decomposition coefficient image.
2. The system of claim 1, wherein the surface geometry acquisition mechanism is configured as an active surface geometry acquisition mechanism to generate a three-dimensional surface geometry model.
3. The system of claim 1, wherein the X-ray imaging mechanism is configured to receive the visible light image and/or the three-dimensional surface geometry model and adjust the collimator shape accordingly and emit X-rays to illuminate the object to be inspected and detect X-rays penetrating the object to generate an X-ray image.
4. The X-ray bone densitometry system in combination with surface geometry acquisition of claim 1, wherein the system is a bone densitometry system for a subject comprising a human body and other samples.
5. The system of claim 1, further comprising a voice prompt device in data communication with the information processing device for prompting the detected object to be correct in posture and correct in identity when the detected object is a human body.
6. The system of claim 1, wherein the information acquisition device further comprises a credential information acquisition mechanism in data communication with an information processing device, the credential information acquisition mechanism acquiring credential information of the inspected person when the inspected object is a human body, the information processing device further configured to verify the identity of the inspected person based on the credential information of the inspected person and the visible light image and/or the three-dimensional surface geometric model.
7. The system of claim 1, wherein the information processing device is further configured to identify the pose of the detected object based on the visible light image and the three-dimensional surface geometry model of the detected object, further perform authentication when the detected object is a human body, not start X-ray imaging if the authentication fails, perform language prompting through a voice prompting device, correct the pose of the detected object and then start X-ray imaging if the pose does not meet the detection requirement; and when the detected object is other samples, correcting the pose of the detected object if the pose does not meet the detection requirement, and then starting X-ray imaging.
8. The system according to claim 1, further comprising an image display device in data communication with the information processing device, wherein the image display device is capable of displaying the bone density image and/or the three-dimensional surface geometry model and/or the visible light image and/or the X-ray image and/or the depth image and/or the basis material decomposition coefficient image.
9. A measurement method based on an X-ray bone densitometry system combined with surface geometry acquisition according to any one of claims 1 to 8, characterized by comprising the steps of:
step 1: the detected object enters an appointed detection area and the pose is adjusted to wait for detection, and when the detected object is a human body, the certificate is placed on the certificate information acquisition unit;
step 2: the surface geometry acquisition mechanism generates a three-dimensional surface geometry model and sends the three-dimensional surface geometry model to the information processing device; the visible light imaging mechanism generates a visible light image of the detected object and sends the visible light image to the information processing device; when the detected object is a human body, the certificate information acquisition unit acquires the certificate information of the detected person and sends the certificate information to the information processing device;
and step 3: when the detected object is a human body, the identity of the detected person is verified: the information processing device processes the visible light image and the three-dimensional surface geometric model, compares and checks the visible light image and the three-dimensional surface geometric model with certificate information of a detected person, and sends an identity verification result to the image display device and the voice device;
and 4, step 4: the information processing device processes the visible light image and the three-dimensional surface geometric model and identifies and judges the pose of the detected object;
and 5: the X-ray imaging mechanism receives the visible light image and/or the three-dimensional surface geometric model, adjusts the shape of a collimator in the X-ray imaging mechanism according to the visible light image and/or the three-dimensional surface geometric model, then emits X-rays to irradiate the detected object and detects the X-rays penetrating the detected object to generate an X-ray image;
step 6: the information processing device registers the three-dimensional surface geometric model and the X-ray image to obtain a depth image matched with the X-ray image;
and 7: the information processing device carries out material decomposition by using the depth image and the X-ray image to generate a bone tissue and soft tissue base material decomposition coefficient image;
and 8: the information processing device generates a bone density image by using the bone tissue base material decomposition coefficient image;
and step 9: the image display device displays a bone density image and/or a three-dimensional surface geometric model and/or a visible light image and/or an X-ray image and/or a depth image and/or a base material decomposition coefficient image of the detected object.
CN202010409980.6A 2020-05-14 2020-05-14 X-ray bone mineral density measuring system and method combining surface geometry acquisition Pending CN113662567A (en)

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