CN215739028U - Dose control device and radiation imaging system - Google Patents

Abstract

The utility model provides a dose control device and a ray imaging system. The ray imaging system is used for detecting the target area of the object to be scanned, a target area sensing unit is placed at the position of the target area of the object to be scanned, and the dosage control device comprises: the target area acquisition unit is used for identifying the target area sensing unit and acquiring the position of the target area; and the moving unit is connected with the target region acquisition unit and used for adjusting the position of the ionization chamber or the flat panel detector according to the position of the target region so that the ray emitting device can adjust the ray dose emitted to the position of the target region. The utility model can automatically adjust the radiation dose, thereby reducing the risk that the object to be scanned receives unnecessary ray radiation and improving the quality of the scanned image; furthermore, the ray radiation position can be adjusted according to requirements, and the time and the energy of an operator or an object to be scanned for adjusting the human body positioning are reduced.

Description

Dose control device and radiation imaging system

Technical Field

The utility model belongs to the technical field of medical equipment, and particularly relates to a dose control device and a ray imaging system.

Background

The Automatic Exposure Control (AEC) technique is to use an ionization chamber to detect the dose of radiation after passing through an object to be scanned, thereby controlling the Exposure time of an X-ray machine and the total amount of X-rays, so that X-ray images taken by different parts and different patients can have the same level of Exposure, and the phenomena of overlarge dose difference and uneven image quality among the taken images are avoided. During clinical use, the object to be scanned or the Region Of Interest (ROI) to be scanned needs to be made to properly cover the dose receiving unit (ionization chamber field) Of the ionization chamber, otherwise it may result in lower exposure dose and reduced image quality. In the conventional method, the ionization chamber and the flat panel detector are similar in size, are generally placed between an object to be scanned and the flat panel detector, and are a separate component on the DR apparatus, and are used for receiving a radiation (such as X-ray) dose, and after reaching a certain threshold, a signal is fed back to the radiation source to notify the radiation source to stop radiating the radiation. As shown in fig. 1, fig. 1 is a schematic structural diagram of an ionization chamber in the prior art. As can be seen from the figure, the ionization chamber 120 generally includes one or more dose receiving units 120a, the dose receiving units 120a are used for receiving the energy of the X-rays, and after a certain threshold is reached, the information is fed back, and fig. 1 shows the ionization chamber 120 including three dose receiving units 120 a; of course, in other embodiments, the ionization chamber 120 may also comprise four, five dose receiving units, and so on. In actual operation, since the position mark of the dose receiving unit 120a is very easily hidden by human body or clothes, or a part of the movable object surface (such as the movable bed surface of the examination bed) cannot mark the dose receiving unit 120a, it is difficult for the operator to obtain the accurate position of the dose receiving unit 120a, so that it cannot be accurately determined whether the object to be scanned or the region of interest covers the dose receiving unit 120 a. The location of the ionization chamber, as indicated by the marked box shown in dashed outline in fig. 2, results in a low dose because it is not covered by the patient.

Therefore, there is a need to provide a dose control device to improve the accuracy of covering the ionization chamber with the object or region of interest to be scanned, so that the object to be scanned receives a reasonable dose, and the imaging quality is improved.

It is noted that the information disclosed in this background section of the utility model is only for enhancement of understanding of the general background of the utility model, and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcome the above-mentioned drawbacks of the prior art, and provides a dose control device and a radiation imaging system, so as to improve the imaging quality of the radiation imaging system and reduce the unnecessary radiation received by the object to be scanned.

In order to achieve the purpose, the utility model is realized by the following technical scheme: a dosage control device is used for a ray imaging system, the ray imaging system comprises a ray emitting device, an ionization chamber and a flat panel detector, the ray imaging system is used for detecting a target area of an object to be scanned, a target area sensing unit is placed at the position of the target area of the object to be scanned, and the dosage control device comprises: a target area acquisition unit configured to identify the target area sensing unit and acquire the target area position;

and the moving unit is connected with the target region acquisition unit and used for adjusting the position of the ionization chamber or the flat panel detector according to the position of the target region, so that the ray emission device adjusts the ray dose emitted to the position of the target region.

Optionally, the target area sensing unit comprises one or more identifiable tags, and the identifiable tags are detachably arranged on the region of interest of the object to be scanned.

Optionally, the identifiable label is an identifiable sticker, one side of the identifiable sticker has an identifying mark, and the other side is an adhesive side.

Optionally, the identifiable tag is a magnetic sticker.

Optionally, the target area obtaining unit includes a target area identifying subunit and a target area calculating subunit; the target area identification subunit is configured to identify the identifiable tag, and the target area calculation subunit is configured to detect the target area location corresponding to the identifiable tag.

Optionally, the target area identification subunit is configured as an image collector or a magnetic sensor adapted to the identifiable tag, and the image collector or the magnetic sensor is disposed on the flat panel detector or in a preset area.

Optionally, the target region sensing unit comprises a dose receiving unit of the ionization chamber and a garment for scanning; the dose receiving unit is fixed at the target area position of the scanning garment.

Optionally, the target region sensing unit includes a dose receiving unit of the ionization chamber and a garment for scanning, and the object to be scanned wears the corresponding garment for scanning according to the position of the target region.

Optionally, the target region sensing unit further comprises a dose receiving unit of the ionization chamber and a housing, the dose receiving unit being disposed within the housing.

In order to achieve another object of the present invention, the present invention further provides a radiation imaging system for detecting a target area of an object to be scanned, where a target area sensing unit is placed at the target area of the object to be scanned, the radiation imaging system including:

a radiation emitting device for emitting X-rays;

an ionization chamber for detecting the dose of the X-rays emitted by the radiation emitting device passing through the target region position;

the flat panel detector is arranged separately or integrally with the ionization chamber and is used for carrying out photosensitive imaging on the position of the target region through which the X-rays pass;

and the dose control device is used for detecting the target region sensing unit to acquire the position of the target region and adjusting the position of the ionization chamber or the flat panel detector according to the position of the target region.

Compared with the prior art, the dose control device and the radiographic imaging system provided by the utility model have the following beneficial effects:

the utility model provides a dose control device, which is used for a ray imaging system, wherein the ray imaging system comprises a ray emission device, an ionization chamber and a flat panel detector, the ray imaging system is used for detecting a target area of an object to be scanned, a target area sensing unit is placed at the position of the target area of the object to be scanned, and the dose control device comprises: a target area acquisition unit configured to identify the target area sensing unit and acquire the target area position; and the moving unit is connected with the target region acquisition unit and used for adjusting the position of the ionization chamber or the flat panel detector according to the position of the target region, so that the ray emission device adjusts the ray dose emitted to the position of the target region. With the configuration, the dose control device provided by the utility model can clearly and effectively acquire the position of the target area according to the region of interest of the object to be scanned, adjust the emission dose of X-rays, overcome the defects that the dose receiving unit is not matched with the region of interest of the object to be scanned or the dose receiving unit is shielded by the object to be scanned in the prior art, automatically adjust the radiation dose, and avoid the risk that the exposure dose is too low and the quality of a scanned image is low; and can avoid the exposure dose from being too high, produce the risk that the scanned target receives the unnecessary ray radiation; furthermore, through the target area sensing unit, the ray radiation position can be adjusted according to requirements, and the time and the energy of an operator or an object to be scanned for adjusting the human body positioning are reduced.

Drawings

FIG. 1 is a schematic diagram of a prior art ionization chamber;

fig. 2 is a schematic view of one of the prior art scenarios in which the ionization chamber is not covered by the object to be scanned;

FIG. 3 is a schematic structural diagram of a dose control device according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an identifiable sticker affixed to a region of interest of the object to be scanned, according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an image collector disposed on a flat panel detector according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a radiation imaging system according to an embodiment of the present invention;

wherein the reference numerals are as follows:

110-ray emitting device, 120-ionization chamber, 120 a-dose receiving unit, 130-flat panel detector,

140-examination couch, 150-collimator, 160-reference template;

200-a dose control device; 220-target area acquisition unit, 221-target area identification subunit, 221 a-camera, 222-target area calculation subunit; 210-a mobile unit;

300-target area sensing unit, 310-recognizable sticker.

Detailed Description

To make the objects, advantages and features of the present invention more apparent, the dose control device and the radiation imaging system 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 utility model, and that illustrative features in the drawings, which are used to illustrate certain principles of the utility model, may also be somewhat simplified. Specific design features 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.

The present embodiment provides a dose control device for a radiation imaging system, and specifically, please refer to fig. 3, where fig. 3 is a schematic structural diagram of the dose control device according to an embodiment of the present invention. The radiation imaging system includes a radiation emitting device 110, an ionization chamber 120, and a flat panel detector 130. The ray imaging system is used for detecting a target area of an object to be scanned, and a target area sensing unit 300 is placed at the position of the target area of the object to be scanned. As can be seen from fig. 3, the dose control device provided by the present embodiment includes a target region acquiring unit 220 and a moving unit 210. The target area obtaining unit 220 is configured to identify the target area sensing unit 300 and obtain the target area position. The moving unit 210 is connected to the target region obtaining unit 220, and configured to adjust a position of the ionization chamber 120 or the flat panel detector 130 according to the target region position, so that the radiation emitting device 110 adjusts a radiation dose emitted to the target region position.

With such a configuration, the dose control device provided by the embodiment can clearly and effectively acquire the position of the target region according to the region of interest of the object to be scanned, and adjust the dose of the radiation emitted to the dose receiving unit 120a, thereby overcoming the defects that the dose receiving unit 120a of the ionization chamber 120 is not matched with the region of interest of the object to be scanned or the dose receiving unit 120a is shielded by the object to be scanned in the prior art, automatically adjusting the radiation dose, and avoiding the risk that the exposure dose is too low and the quality of the scanned image is low; and can avoid the exposure dose from being too high, produce the risk that the scanned target receives the unnecessary ray radiation; furthermore, the ray radiation position can be adjusted according to requirements, and the time and the energy of an operator or an object to be scanned for adjusting the human body positioning are reduced.

It is specifically noted that in some embodiments, the radiation imaging system may be a non-invasive biomedical imaging device for disease diagnosis or research purposes. The radiation imaging system may include a single modality scanner and/or a multi-modality scanner. The single modality scanner may include, for example, an X-ray scanner, a Computed Tomography (CT) scanner, a Digital Radiography (DR) scanner (e.g., mobile digital radiography), a Digital Subtraction Angiography (DSA) scanner, a Dynamic Spatial Reconstruction (DSR) scanner, an X-ray microscope scanner, or the like, or any combination thereof. For example, an X-ray imaging device may include an X-ray source and a detector. The X-ray source may be configured to emit X-rays toward an object to be scanned. The detector may be configured to detect X-rays transmitted through the object to be scanned. In some embodiments, the X-ray imaging device may be, for example, a C-shaped X-ray imaging device, a stand-up X-ray imaging device, a hanging X-ray imaging device, or the like. The multi-modality scanner may include, for example, an X-ray imaging-magnetic resonance imaging (X-ray-MRI) scanner, a positron emission tomography-X-ray imaging (PET-X-ray) scanner, a positron emission tomography-computed tomography (PET-CT) scanner, a digital subtraction angiography-magnetic resonance imaging (DSA-MRI) scanner, and the like.

The scanners provided above are for illustration purposes only and are not intended to limit the scope of the present application. As used herein, the term "imaging modality" or "modality" broadly refers to an imaging method or technique that collects, generates, processes, and/or analyzes imaging information of an object to be scanned.

In some exemplary embodiments, a radiographic imaging system (such as a DR system) may include a gantry, a flat panel detector, an ionization chamber, a patient bed, and a radiation source. The frame can support the flat panel detector and the radioactive source. The object to be scanned may be placed on a patient table and then moved to the flat panel detector area for scanning. The radiation source may emit radioactive rays toward the object to be scanned. The radioactive rays may include particle rays, photon rays, and the like, or combinations thereof. In some embodiments, the radioactive emissions may include at least two radiation particles (e.g., neutrons, protons, electrons, muons, heavy ions), at least two radiation photons (e.g., X-rays, gamma rays, ultraviolet rays, laser light), and the like, or combinations thereof. The ionization chamber detects the radiation dose emitted from the radiation source. It should be noted that the above description of a radiographic imaging system is intended to be illustrative, and not to limit the scope of the application. Many alternatives, modifications, and variations will be apparent to those of ordinary skill in the art. The features, structures, methods, and other features of the exemplary embodiments described herein may be combined in various ways to obtain additional and/or alternative exemplary embodiments. For example, the radiographic imaging system may include one or more additional components. Additionally or alternatively, one or more components of the radiographic imaging system, such as the patient bed, may be omitted.

Further, as will be appreciated by those skilled in the art, in some embodiments, the object to be scanned may include a biological object to be scanned and/or a non-biological object to be scanned. For example, the object to be scanned may comprise a region of interest (specific part) of the body, including the head, chest, abdomen, or the like, or a combination thereof. As another example, the object to be scanned may be an artificial object of organic and/or inorganic matter, living or non-living. The utility model is not limited in this regard.

Preferably, in one exemplary embodiment, the target area sensing unit 300 includes one or more identifiable tags, and the identifiable tags are detachably disposed on the region of interest of the object to be scanned.

In a preferred embodiment, the target area obtaining unit 220 includes a target area identifying subunit 221 and a target area calculating subunit 222; the target area identifying subunit 221 is configured to identify the identifiable tag, and the target area calculating subunit 222 is configured to detect the target area location corresponding to the identifiable tag. Preferably, the target area calculating subunit 222 is in communication connection with the ray emitting device 110; the ionization chamber 120 is fixedly disposed on a flat panel detector 130 of the radiographic imaging system.

Accordingly, the target area identifying subunit 221 configured to send the identification result information of the identifiable tag to the target area calculating subunit 222; the target area calculating subunit 222 is configured to calculate the target area position of the target area in the coordinate system of the flat panel detector 130 according to the identification result, and send the target area position to the ray emission device 110 and the moving unit 210; the moving unit 210 adjusts the position of the flat panel detector 130 according to the position of the target region, so that the region of interest of the object to be scanned covers the dose receiving unit 120a of the ionization chamber 120.

As will be understood by those skilled in the art, in this embodiment, as mentioned above, adjusting the position of the ionization chamber 120 or the flat panel detector 130 according to the position of the target region can improve the accuracy of covering the ionization chamber with the object or the region of interest to achieve the optimal radiation dose, so that the object to be scanned receives a reasonable dose, thereby improving the imaging quality.

In particular, in one embodiment, the target area calculation subunit 222 may be a stand-alone data processing device including a memory and a processor. It may also be integrated in a processing device of the radiation imaging system, preferably the target area calculation subunit 222 is integrated in the processing device. The processing device may also send control instructions to one or more components of the radiographic imaging system (e.g., the radiation emitting apparatus 110, a moving apparatus for moving the flat panel detector 130). For example, the processing device may send control instructions to the radiographic imaging system to cause movable components of the radiographic imaging system (e.g., a patient bed, an ionization chamber, a flat panel detector, etc.) to move to designated positions. In some embodiments, the processing device may be a single server or a group of servers. The server groups may be centralized or distributed. In some embodiments, the processing device may be local or remote to the radiographic imaging system. For example, the processing device may access information and/or data from a radiographic imaging system via a network. As another example, the processing device may be directly connected to the radiographic imaging system to access information and/or data. In some embodiments, the processing device may be implemented on a cloud platform, e.g., the cloud platform may include a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, inter-cloud, multi-cloud, etc., or a combination thereof. The present invention does not impose any limitations on the processing equipment of the radiographic imaging system.

Preferably, in one exemplary embodiment, the identifiable tag is an identifiable sticker 310, and one side of the identifiable sticker 310 has an identifying mark and the other side is an adhesive side. In accordance with this, the target area identification subunit 221 is an image collector installed on the radiographic imaging system or in a preset area.

Correspondingly, the target area identifying subunit 221 is configured to identify the identifiable tag, and includes: the image collector is used for obtaining the image of the identification mark; the identifiable tag is detachably arranged in the region of interest of the object to be scanned, and comprises: the pasting surface of the recognizable sticker 310 is pasted on the interested area of the object to be scanned. Referring to fig. 4, fig. 4 is a schematic diagram illustrating an identifiable sticker attached to a region of interest of the object to be scanned according to an embodiment of the present invention. As can be seen from fig. 4, if the radiographic image of the chest of the object to be scanned is obtained, the identifiable sticker 310 is only required to be pasted on the chest of the object to be scanned. Therefore, the imaging quality of the ray imaging equipment can be improved, and the risk that an object to be scanned receives unnecessary ray radiation is reduced; and the method is easy to operate and implement, can obviously improve the efficiency of scanning and imaging, and saves labor and time cost.

In particular, in some embodiments, the image collector may be integrated into or mounted on the flat panel detector or a predetermined area, such as a gantry of the radiographic imaging system, an ionization chamber 120; it may also be provided independently of the radiographic imaging system, for example, the image collector may be mounted on the ceiling of an examination room. As shown in fig. 5, fig. 5 is a schematic structural diagram of an image collector arranged on a flat panel detector according to an embodiment of the present invention, where the image collector in fig. 5 is a camera 221a, and the camera is arranged above the flat panel detector 130. As will be appreciated by those skilled in the art, the image collector may be and/or include any suitable device capable of recognizing the identification. For example, the image capturer may include a camera (e.g., a camera, a digital camera, an analog camera, etc.), a red-green-blue (RGB) sensor, an RGB-depth (RGB-D) sensor, or other device that may recognize the identifying indicia of the recognizable sticker 310. Still further, the image collector may continuously or intermittently (e.g. periodically) identify the identification before, during and/or after a scan of a region of interest of an object to be scanned is performed by the radiographic imaging system.

As will be appreciated by those skilled in the art, the present invention is not limited in any way to the identification of the recognizable sticker 310. The identification mark can be a color image or a gray image. In some embodiments, the identification mark may include a graphic corresponding to the recognizable sticker 310, such as a circle, a square, etc., which may be a color filled graphic or a line outlining the recognizable sticker 310. The identifiers may be represented by the same color and/or graphic or may be represented by different colors and/or graphics.

Preferably, in one exemplary embodiment, the identifiable tag is a magnetic sticker, and the target area identifying subunit 221 is a magnetic inductor adapted to the magnetic sticker.

Correspondingly, the target area identifying subunit 221 is configured to identify the identifiable tag, and includes: the magnetic sensor is arranged on the ray imaging system and is configured to detect the magnetic paster; the identifiable tag is detachably arranged in the region of interest of the object to be scanned, and comprises: the magnetic paster is pasted on the interested area of the object to be scanned.

Preferably, in one of the exemplary embodiments, the target area sensing unit 300 further comprises a dose receiving unit of the ionization chamber and a garment for scanning; the dose receiving unit 120a is fixed at the target region position of the scanning garment. Preferably, the object to be scanned wears the corresponding garment for scanning according to the position of the target area. Namely, when acquiring the radiographic image of the interested area of the object to be scanned, the object to be scanned wears the garment for scanning. For example, if the region of interest of the object to be scanned is the chest of a human body, the person to be detected only needs to wear the clothes with the identifiable label and the identifiable label stuck on the chest of the scanning clothes; if the region of interest of the object to be scanned is a hand of a human body, the person to be detected only needs to wear the gloves with the identifiable labels, and so on, and no example is given. Therefore, the dose control device provided by the embodiment is more convenient to operate and use, the scanning garment can be repeatedly used, the imaging efficiency is improved, and the material cost can be remarkably saved.

Optionally, in a preferred embodiment, the target area sensing unit 300 further includes a dose receiving unit 120a and a housing (not labeled), and the dose receiving unit 120a is disposed in the housing. Preferably, the housing is made of a non-imaging material, including but not limited to plexiglass or the like. Furthermore, the dose receiving unit 120a may be fixed to a specially shaped object, such as a string, or a chain link. Therefore, the dose receiving unit 120a can be protected to the maximum extent and is convenient for the doctor to identify while the radiographic quality is not affected.

It should be noted that, as can be understood by those skilled in the art for any of the above embodiments, the present invention does not limit the connection manner of the dose receiving unit 120a and the radiation emitting device 110 of the radiation imaging system, and in some embodiments, the connection manner is a wired connection; in other embodiments, the connection is wireless. Therefore, the dose receiving unit 120a can accurately feed back the received radiation dose in real time, so that the radiation emitting device 110 can increase, decrease and/or stop the radiation dose emitted to the dose receiving unit 120 a.

Based on the same inventive concept, yet another embodiment of the present invention further provides a radiographic imaging system for detecting a target area of an object to be scanned, where a target area sensing unit 300 is disposed at a position of the target area of the object to be scanned. Specifically, please refer to fig. 6, which schematically shows a structural schematic diagram of the radiation imaging system provided in the present embodiment. As can be seen from fig. 6, the radiation imaging system includes: a radiation emitting device 110, an ionization chamber 120, a flat panel detector 130 and a dose control device 200.

Specifically, the radiation emitting device 110 is used to emit X-rays. The ionization chamber 120 is used for detecting the dosage of the X-ray emitted by the ray emission device and passing through the target region position. The flat panel detector 130, which is disposed separately from or integrally with the ionization chamber 120, is used for performing photosensitive imaging on the target region position through which the X-ray passes. The dose control device 200 is configured to detect the target region sensing unit 300 to obtain the position of the target region, and adjust the position of the ionization chamber 120 or the flat panel detector 130 according to the position of the target region. Those skilled in the art will appreciate that the radiographic imaging system also includes conventional components such as a couch 140, a collimator 150, a reference template 160, and the like, which will not be described one by one.

Since the basic principle of the radiation imaging system provided by this embodiment is the same as that of the dose control device provided by each of the above embodiments, for avoiding redundant description, the description is simplified and detailed, please refer to each of the above embodiments related to the dose control device, and it is not expanded here one by one.

As can be understood by those skilled in the art, since the radiation imaging system provided in this embodiment is the same as the dose control device provided in the above embodiments, at least the same beneficial effects are obtained, and thus, no further description is provided herein.

It is to be noted that different embodiments may produce different advantages, and in different embodiments, any one or combination of the above advantages may be produced, or any other advantages may be obtained.

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.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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 utility model. 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 describe the dose control device and the radiation imaging system in detail, it goes without saying that the above description is only for the description of the preferred embodiment of the present invention and does not limit the scope of the present invention in any way, the present invention includes but is not limited to the configurations listed in the above embodiments, and those skilled in the art can take the above embodiments for all three, and any changes and modifications made by those skilled in the art according to the above disclosure belong to the protection scope of the claims.

Claims (10)

1. A dosage control device is used for a ray imaging system, the ray imaging system comprises a ray emission device, an ionization chamber and a flat panel detector, the ray imaging system is used for detecting a target area of an object to be scanned, and a target area sensing unit is placed at the position of the target area of the object to be scanned, and the dosage control device is characterized by comprising:

a target area acquisition unit configured to identify the target area sensing unit and acquire the target area position;

and the moving unit is connected with the target region acquisition unit and used for adjusting the position of the ionization chamber or the flat panel detector according to the position of the target region, so that the ray emission device adjusts the ray dose emitted to the position of the target region.

2. Dose control device according to claim 1, characterized in that the target area sensing unit comprises one or more identifiable tags which are detachably arranged at a region of interest of the object to be scanned.

3. Dose control device according to claim 2, wherein the identifiable label is an identifiable sticker having an identifying mark on one side and an adhesive side on the other side.

4. The dose control device of claim 2, wherein the identifiable tag is a magnetic sticker.

5. Dose control device according to any of claims 2 to 4, wherein the target region acquisition unit comprises a target region identification subunit and a target region calculation subunit; the target area identification subunit is configured to identify the identifiable tag, and the target area calculation subunit is configured to detect the target area location corresponding to the identifiable tag.

6. Dose control device according to claim 5, characterized in that the target area identification subunit is configured as an image collector or magnetic sensor adapted to the identifiable tag, which image collector or magnetic sensor is arranged on the flat panel detector or in a predetermined area.

7. Dose control device according to claim 1, characterized in that said target area sensing unit comprises a dose receiving unit of said ionization chamber and a garment for scanning; the dose receiving unit is fixed at the target area position of the scanning garment.

8. Dose control device according to claim 1, characterized in that the target area sensing unit comprises a dose receiving unit of the ionization chamber and a garment for scanning, the object to be scanned wearing the corresponding garment for scanning according to the target area position.

9. The dose control device of claim 1, wherein the target region sensing unit further comprises a dose receiving unit of the ionization chamber and a housing, the dose receiving unit being disposed within the housing.

10. A ray imaging system is used for detecting a target area of an object to be scanned, and a target area sensing unit is placed at the position of the target area of the object to be scanned, and is characterized by comprising:

a radiation emitting device for emitting X-rays;

an ionization chamber for detecting the dose of the X-rays emitted by the radiation emitting device passing through the target region position;

the flat panel detector is arranged separately or integrally with the ionization chamber and is used for carrying out photosensitive imaging on the position of the target region through which the X-rays pass;

and the dose control device is used for detecting the target region sensing unit to acquire the position of the target region and adjusting the position of the ionization chamber or the flat panel detector according to the position of the target region.

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