CN113729741A - Human body region detection device, human body region detection system, imaging method, electronic device, and medium - Google Patents
Human body region detection device, human body region detection system, imaging method, electronic device, and medium Download PDFInfo
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- CN113729741A CN113729741A CN202111045884.9A CN202111045884A CN113729741A CN 113729741 A CN113729741 A CN 113729741A CN 202111045884 A CN202111045884 A CN 202111045884A CN 113729741 A CN113729741 A CN 113729741A
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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
- A61B6/42—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B6/4208—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
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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
- A61B6/52—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
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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
- A61B6/54—Control of apparatus or devices for radiation diagnosis
- A61B6/547—Control of apparatus or devices for radiation diagnosis involving tracking of position of the device or parts of the device
Abstract
The invention provides a human body region detection device, a human body region detection system, an imaging method, electronic equipment and a medium, wherein the human body region detection device is used for a ray imaging system and comprises the following components: the human body detection module and the human body region segmentation module are electrically connected. The human body detection module is used for detecting a human body coverage area and/or a non-human body coverage area and detecting information of the human body coverage area and/or the non-human body coverage area; and the human body area segmentation module is used for obtaining a human body segmentation template according to the human body coverage area and the non-human body coverage area and then sending the human body segmentation template to the imaging control device. The invention provides a human body region detection device, a human body region detection system, an imaging method, electronic equipment and a medium, which can enable the radiation dose and the beam limiter opening to be more accurate according to a human body segmentation template, thereby reducing the risk that a human body receives unnecessary rays and improving the imaging quality of a ray imaging system.
Description
Technical Field
The invention relates to the technical field of medical equipment imaging, in particular to a human body region detection device, a human body region detection system, a human body region imaging method, electronic equipment and a medium.
Background
The DR system, i.e. a direct digital radiography system, is composed of an electronic cassette, a scan controller, a system controller, a beam limiter, an image monitor, etc., and is a direct digital radiography system which directly converts X-ray photons into a digital image through the electronic cassette. DR, the current trend of mainstream radiography, generally has an automatic dose adjustment function. When imaging a subject (patient), the real-time fluoroscopy device may first image according to a preset dose and detect a current radiation dose (also referred to as an exposure dose) in real-time. If the current radiation dose is too large, the radiation dose can be automatically reduced according to an automatic dose adjusting algorithm so as to prevent the examinee from receiving excessive ray radiation; otherwise, the radiation dose can be automatically increased to ensure the image quality.
In the prior art, the radiation dose and the opening of the beam limiter are determined by a correlation algorithm based on detecting the edge of the beam limiter and the contour of the subject (human body) so that the subject is irradiated with an appropriate dose. However, in practical applications, due to adverse effects such as the light environment of the scene shot and the edge of the beam limiter covered by the human body, the dose determination algorithm often has false detection, such as: the placing position of the hand of the examinee cannot be accurately positioned, when the hand image of the examinee does not need to be acquired, unnecessary rays are irradiated on the hand of the examinee, and radiation damage is brought to the examinee; when the hand image of the examinee needs to be acquired, the radiation dose irradiated on the hand of the examinee is insufficient, so that the quality of the acquired hand image is poor or even not qualified. Unfortunately, due to the uncertainty of the human body positioning and the complexity of the shooting environment, shooting light and the like, no relevant technical solution for overcoming the defect is found in the related art disclosed in the prior art.
Therefore, how to provide a human body region detection device capable of accurately determining a human body region to overcome the above-mentioned defects in the prior art is becoming one of the technical problems to be solved by those skilled in the art.
It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
An object of the present invention is to provide a human body region detection apparatus, a human body region detection system, an imaging method, an electronic device, and a medium, which can reduce the risk of an examinee (human body) receiving unnecessary radiation and improve the imaging quality of a radiation imaging system, in view of the above-mentioned drawbacks of the prior art.
In order to achieve the purpose, the invention is realized by the following technical scheme: a human body region detection device is used for a ray imaging system, and the ray imaging system comprises a flat panel detector and an imaging control device; the human body region detection device includes: the human body detection module and the human body region segmentation module are electrically connected; the human body detection module is arranged on one side, facing the human body, of the flat panel detector; the human body region segmentation module is connected with the imaging control device;
the human body detection module is configured to detect a human body coverage area and/or a non-human body coverage area;
the human body region segmentation module is configured to obtain a human body segmentation template according to the detected human body coverage region and the detected non-human body coverage region, and send the human body segmentation template to the imaging control device.
Optionally, the human body detection module includes a light source module and a visible light sensor array composed of a plurality of visible light sensors;
wherein, human body detection module sets up flat panel detector one side towards the human body includes: the visible light sensor array is arranged on one side of the flat panel detector facing to a human body;
the light source module is configured to irradiate one side of the flat panel detector facing the human body so that the visible light sensor array can detect a human body coverage area and a non-human body coverage area;
according to the received visible light information, the visible light sensor array is configured to detect a first electrical signal of a human body coverage area and a second electrical signal of a non-human body coverage area, and is used for sending the first electrical signal and the second electrical signal to the human body area segmentation module.
Optionally, a preset mapping relationship exists between the visible light sensor of the visible light sensor array and the imaging unit of the flat panel detector.
Optionally, the radiation imaging system further comprises a bulb tube capable of emitting natural light, and the light source module is the bulb tube.
In order to achieve the second object of the present invention, the present invention further provides a radiation imaging system, which includes a flat panel detector, a beam limiter, an imaging control device and the human body region detection device as described in any one of the above;
the imaging control device is connected with the flat panel detector, the beam limiter and the human body region detection device;
the human body region detection device is arranged on one side of the flat panel detector facing the human body;
the imaging control device is configured to receive the human body segmentation template sent by the human body region detection device and is used for controlling the opening of the beam limiter and the radiation dose of the ray imaging system according to the human body segmentation template;
the imaging control device is further used for controlling the flat panel detector to expose according to the opening of the beam limiter and the radiation dose, so as to obtain a human body image.
Optionally, the imaging control device comprises a beam limiter control module, a dosage control module and a master control module which are electrically connected;
the beam limiter control module is connected with the beam limiter, and the dosage control module is connected with the flat panel detector; the human body area segmentation module of the human body area detection device is connected with the master control module;
the master control module is configured to acquire human body positioning information according to the human body segmentation template and send the human body positioning information to the beam limiter control module and the dosage control module;
the beam limiter control module is configured to control the opening of the beam limiter according to the human body positioning information;
the dose control module is configured to adjust the radiation dose of the radiographic imaging system according to the human body positioning information.
In order to achieve the third object of the present invention, the present invention further provides an imaging method based on the radiation imaging system of any one of the above, the imaging method including:
detecting a human body coverage area and/or a non-human body coverage area, and converting information of the detected human body coverage area and/or the non-human body coverage area into an electric signal;
according to the electric signal, a human body coverage area and a non-human body coverage area are segmented to obtain a human body segmentation template;
controlling the opening of the beam limiter and the radiation dose of the ray imaging system according to the human body segmentation template;
and controlling the flat panel detector to expose according to the opening of the beam limiter and the radiation dose, so as to obtain a human body image.
Optionally, before the detecting the human body coverage area and/or the non-human body coverage area, further comprising:
the method comprises the following steps of (1) combining a plurality of sensors into a visible light sensor array, and arranging the visible light sensor array on one side of a flat panel detector facing a human body, wherein the projection area of the visible light sensor array on the flat panel detector covers the projection area of the human body on the flat panel detector;
respectively connecting the visible light sensor array with the human body region segmentation module, and connecting the human body region segmentation module with the imaging control device;
and controlling a light source module to irradiate the visible light sensor array after the patient is positioned.
To achieve the fourth object of the present invention, the present invention further provides an electronic device comprising a processor and a storage device, the processor being adapted to implement instructions, the storage device being adapted to store a plurality of instructions, the instructions being adapted to be loaded by the processor and the imaging method according to any of the above.
To achieve the fifth object of the present invention, the present invention provides a computer-readable storage medium having stored therein a computer program which, when executed by a processor, implements the imaging method of any one of the above.
Compared with the prior art, the human body region detection device, the human body region detection system, the imaging method, the electronic equipment and the medium have the following beneficial effects:
the invention provides a human body region detection device, which is used for a ray imaging system, wherein the ray imaging system comprises a flat panel detector and an imaging control device; the human body region detection device includes: the human body detection module and the human body region segmentation module are electrically connected; the human body detection module is arranged on one side, facing the human body, of the flat panel detector; the human body region segmentation module is connected with the imaging control device; the human body detection module is configured to detect a human body coverage area and/or a non-human body coverage area; the human body region segmentation module is configured to obtain a human body segmentation template according to the detected human body coverage region and the detected non-human body coverage region, and send the human body segmentation template to the imaging control device. With the configuration, the human body region detection device provided by the invention can accurately divide human body and non-human body regions, so that the radiation dose of the imaging control device can be adjusted more reasonably and accurately, the risk that an examinee (human body) receives unnecessary ray radiation is reduced, and meanwhile, the imaging control device can more accurately control the opening of the beam limiter, thereby improving the imaging quality of a ray imaging system.
Furthermore, the human body area detection device provided by the invention comprises a human body detection module and a visible light sensor array formed by a plurality of visible light sensors, wherein the visible light sensor array is arranged on one side of the flat panel detector facing to the human body. Therefore, the human body region detection device provided by the invention is low in cost and easy to control; and the human body region detection device is in a modular design, is convenient to integrate with the existing ray imaging system and is easy to implement.
Furthermore, the human body region detection device provided by the invention has no limitation on a flat panel detector of a ray imaging system, so that the human body region detection device provided by the invention can be suitable for different ray imaging systems and image types, and has high robustness.
Because the radiographic imaging system, the radiographic imaging method, the electronic device and the storage medium provided by the invention belong to the same inventive concept as the human body region detection device provided by the invention, the radiographic imaging system, the radiographic imaging method, the electronic device and the storage medium have at least the same beneficial effects, and are not repeated.
Drawings
Fig. 1 is a schematic structural diagram of a human body region detection device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a radiation imaging system according to a second embodiment of the present invention;
fig. 3 is a schematic side view of a visible light array of the human body region detecting apparatus and one of the position relationships of the flat panel detector of the radiation imaging system according to one of the first embodiments of the present invention;
fig. 4 is a schematic side view of a visible light array of the human body region detecting apparatus according to another position relationship with a flat panel detector of a radiation imaging system in accordance with a first embodiment of the present invention;
fig. 5 is a schematic view of a projection of a visible light sensor array and a human body on a flat panel detector of the human body region detection apparatus according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a correspondence relationship between a visible light sensor of a visible light sensor array of the human body region detection apparatus and an imaging unit of a flat panel detector of a radiation imaging system according to an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating another corresponding relationship between a visible light sensor of a visible light sensor array of the human body region detection apparatus and an imaging unit of a flat panel detector of a radiation imaging system according to an embodiment of the present invention;
fig. 8 is a schematic diagram illustrating a further corresponding relationship between a visible light sensor of a visible light sensor array of the human body region detection apparatus and an imaging unit of a flat panel detector of a radiation imaging system according to an embodiment of the present invention;
fig. 9 is a schematic flowchart of an imaging method according to a third embodiment of the present invention;
fig. 10 is a schematic structural diagram of an electronic device according to yet another embodiment of the invention;
wherein the reference numerals are as follows:
100-flat panel detector, 100 a-imaging unit, 200-imaging control device, 210-beam limiter control module, 220-dosage control module, 230-master control module, 300-human body area detection device, 400-bulb end, 500-human body, 600-beam limiter;
310-a human body detection module, 311-a light source module, 312-a visible light sensor array, 312 a-a visible light sensor and 320-a human body region segmentation module;
a1-human body coverage area, A2-non-human body coverage area, B1, B2-projection area;
1-a processor; 2-a communication interface; 3-a memory; 4-communication bus.
Detailed Description
To make the objects, advantages and features of the present invention more apparent, the human body region detecting device, the system, the imaging method, the electronic apparatus and the medium according to the present invention will be described in further detail with reference to the accompanying drawings. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. It should be understood that the drawings are not necessarily to scale, showing the particular construction of the invention, and that illustrative features in the drawings, which are used to illustrate certain principles of the invention, may also be somewhat simplified. Specific design features of the invention disclosed herein, including, for example, specific dimensions, orientations, locations, and configurations, will be determined in part by the particular intended application and use environment. In the embodiments described below, the same reference numerals are used in common between different drawings to denote the same portions or portions having the same functions, and a repetitive description thereof will be omitted. In this specification, like reference numerals and letters are used to designate like items, and therefore, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.
These terms, as used herein, are interchangeable where appropriate. Similarly, if the method described herein comprises a series of steps, the order in which these steps are presented herein is not necessarily the only order in which these steps may be performed, and some of the described steps may be omitted and/or some other steps not described herein may be added to the method.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It should be particularly noted that, as will be understood by those skilled in the art, with the development of medical Digital imaging technology, radiographic imaging systems such as a CR (Computed Radiography) system, a DR (Digital Radiography) system, and a CT (Computed Tomography) system are widely used in hospital diagnosis. For convenience of understanding and explanation, the DR system is taken as an example to describe the human body region detection apparatus provided by the present invention, and it is obvious that according to the disclosure of the human body region detection apparatus provided by the present invention, those skilled in the art can use the human body region detection apparatus provided by the present invention in a CR system or other radiographic imaging systems without any creative work, and for avoiding redundancy, the description is not repeated herein, but all of them are within the protection scope of the present invention.
Before specifically describing the human body region detecting apparatus provided by the present invention, in order to facilitate understanding of the present invention, the basic principle of the DR image system is briefly described as follows:
the DR image system adopts a digital flat panel detector (namely, a DR flat panel detector) as an imaging carrier, a console computer of the DR image system controls a ray generating device to emit rays with preset radiation dose through a bulb end, the rays are irradiated through an opening of a beam limiter and irradiate an imaging unit (the flat panel detector consists of a plurality of imaging units and a photoelectric conversion layer) of the DR flat panel detector through a human body to form an image electric signal, and the console utilizes the computer to carry out digital processing to enable the image electric signal to directly enter a computer of an image acquisition console for storage, analysis and preservation after sampling and analog to digital conversion (A/D).
The core idea of the invention is to provide a human body region detection device to reduce unnecessary radiation received by the examinee (human body) and improve the imaging quality of the radiation imaging system, aiming at the defects of poor imaging quality of the radiation imaging system in the prior art and unnecessary radiation dosage received by the examinee in the shooting process.
In order to realize the above idea, the inventor of the present application has found through a lot of practices and intensive research that the root cause of the problem is that when the radiographic imaging system detects the edge of the beam limiter and the contour of the human body, due to the existence of unexpected factors such as light environment and mutual shielding, the human body segmentation algorithm in the prior art cannot accurately segment the human body and the surrounding objects, so that there are errors in setting the radiation dose and setting the size of the opening of the beam limiter. Thus, based on the above research, the present invention provides a human body region detection apparatus, a human body region detection system, an imaging method, an electronic device, and a medium.
Example one
The human body region detection device provided by the embodiment is used for a ray imaging system. Specifically, please refer to fig. 1, fig. 2, fig. 3 and fig. 4, fig. 1 is a schematic structural diagram of the human body region detection apparatus provided in this embodiment; FIG. 2 is a schematic diagram of a radiation imaging system according to a second embodiment of the present invention; fig. 3 is a schematic side view of a visible light array of the human body region detecting apparatus and one of the position relationships of the flat panel detector of the radiation imaging system according to one of the first embodiments of the present invention; fig. 4 is a schematic side view of another positional relationship between a visible light array of a human body region detection apparatus and a flat panel detector of a radiation imaging system according to one embodiment of the first embodiment of the present invention. As can be seen from fig. 1 to 4, the radiation imaging system includes a flat panel detector 100 and an imaging control apparatus 200. The human body region detecting device 300 includes: a human body detection module 310 and a human body region segmentation module 320 electrically connected. Wherein the human body detection module 310 is disposed on a side of the flat panel detector 100 facing a human body 500 (subject); the human body region segmentation module 320 is connected with the imaging control device 200.
In particular, the human detection module 310 is configured to detect a human coverage area a1 and/or a non-human coverage area a 2; the human body region segmentation module 320 is configured to obtain a human body segmentation template according to the detected human body coverage region a1 and non-human body coverage region a2, and send the human body segmentation template to the imaging control apparatus 200. Further, in one preferred embodiment, the human body detection module 310 converts the information of the detected human body coverage area a1 and/or the non-human body coverage area a2 into an electrical signal and transmits the electrical signal to the human body area segmentation module 320. The human body region segmentation module 320 is configured to segment the human body coverage region a1 and the non-human body coverage region a2 according to the electrical signal to obtain a human body segmentation template, and send the human body segmentation template to the imaging control apparatus 200. Wherein the human body segmentation template comprises human body outline (human body part) information.
With such a configuration, the human body region detection device provided by the invention can accurately divide the human body region and the non-human body region (air coverage region), so that the radiation dose of the imaging control device can be adjusted more reasonably and accurately, the risk that the human body 500 receives unnecessary ray radiation is reduced, and meanwhile, the imaging control device can more accurately control the opening of the beam limiter, thereby improving the imaging quality of a ray imaging system. Further, the human body region detection device provided by the invention has no limitation on the flat panel detector 100 of the radiation imaging system, so that the human body region detection device provided by the invention can be suitable for different radiation imaging systems and image types, and has high robustness.
Preferably, in one exemplary embodiment, with continued reference to fig. 1 to 4, the human body detection module 310 includes a light source module 311 and a visible light sensor array 312 composed of several visible light sensors 312 a. Specifically, the visible light sensor array 312 is disposed on a side of the flat panel detector 100 facing the human body 500. The light source module 311 is configured to illuminate a side of the flat panel detector 100 facing the human body 500, so that the visible light sensor array 312 can detect a human body coverage area a1 and a non-human body coverage area a 2. According to the received visible light information, the visible light sensor array 312 is configured to detect a first electrical signal of the human body coverage area a1 and a second electrical signal of the non-human body coverage area a2, and to transmit the first electrical signal and the second electrical signal to the human body area segmentation module 320. In particular, as can be appreciated by those skilled in the art, the present invention does not limit the distance between the visible light sensor array 312 and the flat panel detector 100: in one embodiment, referring to fig. 3, the visible light sensor array 312 may be detachably attached to the surface of the flat panel detector 100; in another embodiment, the visible light sensor array 312 may also be integrated as a component of the flat panel detector 100 on the surface of the flat panel detector 100; in yet another embodiment, referring to fig. 4, a certain gap may be formed between the visible light sensor array 312 and the flat panel detector 100. In practical application, the setting is set according to practical situations.
With such a configuration, in the human body region detection apparatus provided by the present invention, the human body detection module 310 includes a light source module 311 and a visible light sensor array 312 composed of a plurality of visible light sensors 312a, and the visible light sensor array 312 is disposed on a side of the flat panel detector facing the human body 500. Therefore, the human body region detection device provided by the invention is low in cost and easy to control; and the human body region detection device is in a modular design, is convenient to integrate with the existing ray imaging system and is easy to implement.
Preferably, in an exemplary embodiment, please refer to fig. 5, which is a schematic diagram illustrating a projection of a visible light sensor array and a human body on a flat panel detector of a human body region detection apparatus according to an embodiment of the present invention. As can be seen from fig. 5, the visible light sensor array 312 is disposed between the flat panel detector 100 and the human body 500, and a projection area B1 of the visible light sensor array 312 on the flat panel detector 100 covers a projection area B2 of the human body 500 on the flat panel detector 100. With such a configuration, according to the human body region detection device provided by the present invention, the projection region B2 of the human body 500 only needs to be located in the projection region B1 of the visible light sensor array 312 on the flat panel detector 100, so that the visible light sensor array 312 can detect the complete contour of the human body 500, and the human body coverage region a1 and the non-human body coverage region a2 can be well distinguished. Preferably, the visible light sensor array 312 is the same size as the flat panel detector 100, namely: the visible light sensor array 312 covers the surface of the flat panel detector 100 facing the human body 500, so that the human body area detecting device provided by the invention can cover the flat panel detector 100, does not limit the position between the human body 500 and the flat panel detector 100, and can detect the complete contour of the human body 500, thereby well distinguishing the human body covered area A1 from the non-human body covered area A2.
Preferably, in one exemplary embodiment, the visible light sensor 312a of the visible light sensor array 312 has a preset mapping relationship with the imaging unit 100a of the flat panel detector 100. For convenience of understanding and description, the visible light sensor array 312 is the same size as the flat panel detector 100 (the visible light sensor array 312 covers the surface of the flat panel detector 100 facing the human body 500). Specifically, please refer to fig. 6, fig. 7 and fig. 8, and fig. 6, fig. 7 and fig. 8 are schematic diagrams illustrating a corresponding relationship between a visible light sensor of a visible light sensor array of the human body region detection device and an imaging unit of a flat panel detector of the radiation imaging system, respectively. As shown in fig. 6, one visible light sensor 312a of the visible light sensor array 312 corresponds to a plurality of imaging units 100a of the flat panel detector 100; in yet another embodiment, as shown in fig. 7, the visible light sensors 312a of the visible light sensor array 312 correspond to the imaging units 100a of the flat panel detector 100 in a one-to-one manner; in another embodiment, as shown in fig. 8, a plurality of visible light sensors 312a of the visible light sensor array 312 correspond to one imaging unit 100a of the flat panel detector 100. In accordance with this, the human body region segmentation module 320 converts the position information of the human body coverage region a1 and the non-human body coverage region a2 in the coordinate system of the visible light sensor array to the position information of the coordinate system of the flat panel detector according to the preset mapping relationship between the visible light sensor 312a and the imaging unit 100a of the flat panel detector 100, and obtains the human body segmentation template according to the human body coverage region a 2. Namely, the human body segmentation template comprises position information of a human body contour (a human body part) in a coordinate system of the flat panel detector.
As can be understood by those skilled in the art, although the regular array layout of the visible light sensors 312a and the regular array layout of the imaging unit 100a are taken as examples, the regular layout is not a limitation of the present invention and is only an exemplary description; in other embodiments, the visible light sensor 312a may be arranged in other manners: for example, the coverage area of the visible light sensor 312a in the region corresponding to the human body 500 is smaller than the area of the visible light sensor in the non-human body coverage region, and the description is omitted.
With continued reference to fig. 2, the radiographic imaging system also includes a bulb end 400 that is capable of emitting natural light. The light source module 311 may be an external light source, or may be the bulb tube end 400. In this respect, the present invention is not limited in any way, and the light source module 311 of the human body detecting module 310 shares the bulb tube end 400 of the radiographic imaging system, so that an additional light source is not required, and the cost can be saved.
It is understood by those skilled in the art that the formation of the human body detection module 310 by the visible light sensor array 312 and the light source module 311 is only a description of the preferred embodiment, and is not a limitation of the present invention, and in other embodiments, the human body detection module 310 may also be a touch sensor array composed of several touch sensors. The touch sensor array is disposed between the flat panel detector 100 and the human body 500, and when the human body 500 touches or approaches the touch sensor array, the touch sensor array detects a human body coverage area through a signal detected by a touch sensor in contact with the human body 500, converts the obtained human body area information into an electrical signal, and transmits the electrical signal to the human body area segmentation module 320.
Further, in the human body region detecting apparatus provided by the present invention, the human body detecting module 310 includes a light source module 311 and a visible light sensor array 312 composed of a plurality of visible light sensors 312a, and the visible light sensor array 312 is disposed on a side of the flat panel detector 100 facing a human body. Therefore, the human body region detection device provided by the invention is low in cost and easy to control; and the human body region detection device is in a modular design, is convenient to integrate with the existing ray imaging system and is easy to implement. Furthermore, the human body region detection device provided by the invention has no limitation on a flat panel detector of a ray imaging system, so that the human body region detection device provided by the invention can be suitable for different ray imaging systems and image types, and has high robustness.
Example two
Referring to fig. 2, it can be seen from fig. 2 that the radiation imaging system provided by this example includes a flat panel detector 100, a beam limiter 600, an imaging control device 200, and the human body region detection device 300 according to any one of the embodiments. Wherein, the imaging control device 200 is connected with the flat panel detector 100, the beam limiter 600 and the human body region detection device 300. The human body region detecting device 300 is disposed on a side of the flat panel detector 100 facing the human body 500. The imaging control device 200 is configured to receive the human body segmentation template sent by the human body region detection device 300, and is used for controlling the opening of the beam limiter 600 and the radiation dose of the radiation imaging system according to the human body segmentation template; the imaging control device 200 is further configured to control the flat panel detector 100 to perform exposure according to the opening of the beam limiter 600 and the radiation dose, so as to obtain a human body image. With such a configuration, the radiographic imaging system provided by the invention can adjust the preset radiation dose and the opening of the beam limiter 600 according to the human body segmentation template, so as to prevent the non-imaging area of the human body (the examined person) from receiving too much radiation, and ensure that the imaging area receives reasonable radiation, thereby improving the imaging quality.
As will be appreciated by those skilled in the art, the above description of the radiation imaging system is merely illustrative of the parts associated with the body region detecting apparatus, and the non-radiation imaging system includes only the components of the above exemplary embodiments. For example, in other embodiments, the beam limiter 600 may be a beam splitter, a shutter, or the like. The beam limiter 600 may be installed at a radiation exit of a radiation generating device (not shown in the figure) for shielding unnecessary radiation: the beam limiter 600 may limit radiation exposure to a range that protects normal tissues and vital organs of the human body 500 (e.g., a patient) from exposure. In some embodiments, the radiation imaging system further comprises a gantry (not shown in the figures), which may be used to support the flat panel detector 100 and the radiation generating device, the human body region detecting device 300, and the like. Human body 500 herein refers broadly to a subject, which may include a patient, phantom, or other scanned object. The radiation generating means may emit radiation (such as X-rays) towards the scanned object.
Since the basic principle of the radiation imaging system provided by the present embodiment is the same as that of the human body region detection device provided by the first embodiment, the description is relatively brief, and further detailed description can refer to relevant contents in the first embodiment.
Preferably, in one embodiment, the imaging control device 200 comprises a beam limiter control module 210, a dose control module 220 and a general control module 230, which are electrically connected. The beam limiter control module 210 is connected with the beam limiter 600, and the dose control module 220 is connected with the flat panel detector 100; the human body area segmentation module 320 of the human body area detection device 300 is connected with the master control module 230; the general control module 230 is configured to obtain human body positioning information according to the layout of the imaging units of the flat panel detector 100 and the human body segmentation template, and send the human body positioning information to the beam limiter control module 210 and the dosage control module 220; the beam limiter control module 210 is configured to control the opening of the beam limiter 600 according to the human body positioning information; the dose control module 220 is configured to adjust the radiation dose of the radiographic imaging system according to the human body positioning information.
Specifically, in some embodiments, the human body segmentation template is an image region where a human body part is located. The radiographic imaging system images a human body part. For example, in some embodiments, the human body part may be a tissue, organ, and/or body part of a subject. Specifically, the tissue may include, but is not limited to, muscle tissue, nerve tissue, bone tissue, epithelial tissue, and the like; organs may include, but are not limited to, heart, liver, lung, stomach, kidney, etc.: the body parts may include, but are not limited to, the head, hands, arms, feet, calves, thighs, abdomen, chest, etc. According to the ray imaging system provided by the invention, the human body positioning information can be obtained according to the human body segmentation template; then, according to the mapping relationship between the visible light sensor 312a (the visible light sensor array corresponds to the human body coverage area and the non-human body coverage area, that is, the visible light sensor emitting the first electrical signal corresponds to the human body coverage area, and the visible light sensor emitting the second electrical signal corresponds to the non-human body coverage area) and the imaging unit 100a, the imaging unit 100a corresponding to the human body part can be determined, and according to the imaging unit 100a (usually, a plurality of imaging units are provided) corresponding to the human body part to be imaged, the radiation dosage of the radiographic imaging system and the opening of the beam limiter 600 can be adjusted by the radiographic imaging system.
Further, in one embodiment, the beam limiter control module 210, the dose control module 220 and/or the human body region segmentation module 320 may be integrated into the general control module 230, and the general control module 230 may be implemented in software or hardware, and preferably implemented as a program executable on an electronic device, such as a console computer of the radiographic imaging system.
Since the radiographic imaging system provided in this embodiment and the human body region detection device provided in the first embodiment belong to the same inventive concept, at least the same beneficial effects are achieved, and thus, no further description is given here.
EXAMPLE III
The present example provides an imaging method based on the radiation imaging system described in any one of the second embodiment. Specifically, please refer to fig. 9, and fig. 9 is a schematic flow chart of an imaging method according to a third embodiment of the present invention. As can be seen from fig. 9, the imaging method provided by the present embodiment includes:
s10: detecting a human body coverage area and/or a non-human body coverage area, and converting information of the detected human body coverage area and/or the non-human body coverage area into an electric signal;
s20: according to the electric signal, a human body coverage area and a non-human body coverage area are segmented to obtain a human body segmentation template;
s30: controlling the opening of the beam limiter and the radiation dose of the ray imaging system according to the human body segmentation template;
s40: and controlling the flat panel detector to expose according to the opening of the beam limiter and the radiation dose, so as to obtain a human body image.
Compared with the prior art that the edge of the beam limiter and the contour of the human body are only detected through an algorithm, the imaging method provided by the invention detects the human body coverage area and/or the non-human body coverage area, and converts the information of the detected human body coverage area and/or the non-human body coverage area into an electric signal; according to the electric signal, a human body coverage area and a non-human body coverage area are segmented to obtain a human body segmentation template; according to the human body segmentation template, the opening of the beam limiter and the radiation dose of the ray imaging system are controlled, so that the human body and non-human body areas can be accurately segmented, the radiation dose of the imaging control device is more reasonably and accurately adjusted, the risk that the human body receives unnecessary ray radiation is reduced, meanwhile, the imaging control device can more accurately control the opening of the beam limiter, and the imaging quality of the ray imaging system is improved.
Preferably, in one exemplary embodiment, before the detecting the human body coverage area and/or the non-human body coverage area at step S10, the method further includes:
s01: the method comprises the steps of gathering a plurality of sensors into a visible light sensor array, and arranging the visible light sensor array on one side, facing a human body, of the flat panel detector, wherein the projection area of the visible light sensor array on the flat panel detector covers the projection area of the human body on the flat panel detector.
S02: and respectively connecting the visible light sensor array with the human body region segmentation module, and connecting the human body region segmentation module with the imaging control device.
S03: and controlling a light source module to irradiate the visible light sensor array after the patient is positioned.
In particular, as will be understood by those skilled in the art, for the same radiation imaging system, the step S01 and/or the step S02 may be performed only once when performing the human body region imaging, and may be performed before each imaging, depending on the integration of the human body region detection apparatus 300 with the radiation imaging system. For example, when the radiation imaging system is shipped from the factory, the human body region detecting apparatus 300 is already integrated, and accordingly, it is not necessary to perform the steps S01 and S02 when imaging the human body region.
Therefore, the imaging method provided by the invention can be suitable for different ray imaging systems and image types, and is simple in control method, easy to implement and high in robustness.
It should be noted that the systems and methods disclosed in the embodiments herein may be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments herein. In this regard, each block in the flowchart or block diagrams may represent a module, a program, or a portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments herein may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
Based on the same inventive concept, the present invention further provides an electronic device, please refer to fig. 10, which schematically shows a block structure diagram of the electronic device according to an embodiment of the present invention. As shown in fig. 10, the electronic device comprises a processor 1 and a memory 3, the memory 3 having stored thereon a computer program which, when executed by the processor 1, implements the imaging method described above.
As shown in fig. 10, the electronic device further includes a communication interface 2 and a communication bus 4, wherein the processor 1, the communication interface 2, and the memory 3 complete communication with each other through the communication bus 4. The communication bus 4 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus 4 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus. The communication interface 2 is used for communication between the electronic device and other devices.
The Processor 1 may be a Central Processing Unit (CPU), other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, or the like. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, and the processor 1 is a control center of the electronic device and connects various parts of the whole electronic device by using various interfaces and lines.
The memory 3 may be used to store the computer program, and the processor 1 implements various functions of the electronic device by running or executing the computer program stored in the memory 3 and calling data stored in the memory 3.
The memory 3 may comprise non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
Yet another embodiment of the present invention also provides a computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, is adapted to carry out the steps of the imaging method as set forth above.
The readable storage media of embodiments of the invention may take any combination of one or more computer-readable media. The readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this context, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
It should be noted that computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
In summary, the human body region detection device, the human body region detection system, the imaging method, the electronic device and the medium provided by the invention can accurately divide human body and non-human body regions, so that the radiation dose of the imaging control device can be adjusted more reasonably and accurately, the risk that an examinee (human body) receives unnecessary ray radiation is reduced, and meanwhile, the imaging control device can more accurately control the opening of the beam limiter, so that the imaging quality of a ray imaging system is improved. Furthermore, the human body region detection device provided by the invention is low in cost and easy to control; and the human body region detection device is in a modular design, is convenient to integrate with the existing ray imaging system and is easy to implement. Furthermore, the human body region detection device provided by the invention has no limitation on a flat panel detector of a ray imaging system, so that the human body region detection device provided by the invention can be suitable for different ray imaging systems and image types, and has high robustness.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In summary, the above embodiments have been described in detail on various configurations of the human body region detecting device, the system, the imaging method, the electronic device and the medium according to the present invention, and it is understood that the above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention in any way.
Claims (10)
1. A human body region detection device is used for a ray imaging system, and the ray imaging system comprises a flat panel detector and an imaging control device; characterized in that the human body region detection device comprises: the human body detection module and the human body region segmentation module are electrically connected; the human body detection module is arranged on one side, facing the human body, of the flat panel detector; the human body region segmentation module is connected with the imaging control device;
the human body detection module is configured to detect a human body coverage area and/or a non-human body coverage area; the human body region segmentation module is configured to obtain a human body segmentation template according to the detected human body coverage region and the detected non-human body coverage region, and send the human body segmentation template to the imaging control device.
2. The human body region detecting device according to claim 1, wherein the human body detecting module comprises a light source module and a visible light sensor array composed of a plurality of visible light sensors;
wherein, human body detection module sets up flat panel detector one side towards the human body includes: the visible light sensor array is arranged on one side of the flat panel detector facing to a human body;
the light source module is configured to irradiate one side of the flat panel detector facing the human body so that the visible light sensor array can detect a human body coverage area and a non-human body coverage area;
according to the received visible light information, the visible light sensor array is configured to detect a first electrical signal of a human body coverage area and a second electrical signal of a non-human body coverage area, and is used for sending the first electrical signal and the second electrical signal to the human body area segmentation module.
3. The human body region detection device according to claim 2, wherein a visible light sensor of the visible light sensor array has a preset mapping relation with an imaging unit of the flat panel detector.
4. The human body region detection apparatus of claim 2, wherein the radiation imaging system further comprises a bulb tube capable of emitting natural light, and the light source module is the bulb tube.
5. A radiographic imaging system comprising a flat panel detector, a beam limiter, imaging control means and a body region detecting means according to any one of claims 1 to 4;
the imaging control device is connected with the flat panel detector, the beam limiter and the human body region detection device;
the human body region detection device is arranged on one side of the flat panel detector facing the human body;
the imaging control device is configured to receive the human body segmentation template sent by the human body region detection device and is used for controlling the opening of the beam limiter and the radiation dose of the ray imaging system according to the human body segmentation template;
the imaging control device is further used for controlling the flat panel detector to expose according to the opening of the beam limiter and the radiation dose, so as to obtain a human body image.
6. The radiographic imaging system of claim 5, wherein the imaging control means comprises a beam limiter control module, a dose control module and a general control module electrically connected;
the beam limiter control module is connected with the beam limiter, and the dosage control module is connected with the flat panel detector; the human body area segmentation module of the human body area detection device is connected with the master control module;
the master control module is configured to acquire human body positioning information according to the human body segmentation template and send the human body positioning information to the beam limiter control module and the dosage control module;
the beam limiter control module is configured to control the opening of the beam limiter according to the human body positioning information;
the dose control module is configured to adjust the radiation dose of the radiographic imaging system according to the human body positioning information.
7. An imaging method based on the radiation imaging system of any one of claims 5 to 6, the imaging method comprising:
detecting a human body coverage area and/or a non-human body coverage area, and converting information of the detected human body coverage area and/or the non-human body coverage area into an electric signal;
according to the electric signal, a human body coverage area and a non-human body coverage area are segmented to obtain a human body segmentation template;
controlling the opening of the beam limiter and the radiation dose of the ray imaging system according to the human body segmentation template;
and controlling the flat panel detector to expose according to the opening of the beam limiter and the radiation dose, so as to obtain a human body image.
8. The imaging method according to claim 7, further comprising, prior to said detecting human coverage areas and/or non-human coverage areas:
the method comprises the following steps of (1) combining a plurality of sensors into a visible light sensor array, and arranging the visible light sensor array on one side of a flat panel detector facing a human body, wherein the projection area of the visible light sensor array on the flat panel detector covers the projection area of the human body on the flat panel detector;
respectively connecting the visible light sensor array with the human body region segmentation module, and connecting the human body region segmentation module with the imaging control device;
and controlling a light source module to irradiate the visible light sensor array after the patient is positioned.
9. An electronic device comprising a processor adapted to implement instructions and a storage device adapted to store a plurality of instructions, the instructions being adapted to be loaded by the processor and to perform the imaging method of any of claims 7 to 8.
10. A computer-readable storage medium, characterized in that a computer program is stored in the readable storage medium, which computer program, when being executed by a processor, carries out the imaging method of any one of claims 7 to 8.
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