TWI703394B - Imaging system capable of supporting-bed anti-crash mechanism and anti-crash method for using the same - Google Patents

Abstract

An imaging system is disclosed. The imaging system includes a base, a supporting-bed, an X-ray module and an image detecting module respectively arranged at two relatively sides of the based, a processor and a human-machine interface (HMI) for providing multiple imaging modes, wherein each of the imaging modes respectively corresponds to different imaging distance. When the supporting-bed is assembled on the base, the processor identifies the type of the supporting-bed, and decides a safe distance between the supporting-bed and the X-ray module / the image detecting module. If a specific imaging mode of the multiple imaging modes is corresponding to an imaging distance smaller than the decided safe distance, the processor then disables the specific imaging mode from the multiple imaging modes so a user cannot choose to use the specific imaging mode on the imaging system.

Description

Radiography system with bearing bed anti-collision mechanism and anti-collision method thereof

The invention relates to an imaging system, in particular to an imaging system which can prevent a bearing bed from being collided and a collision avoidance method thereof.

The imaging system mainly includes an X-ray module for emitting X-rays, an image detection module for detecting X-rays to generate images, and a bearing bed arranged on the X-ray irradiation path and used to carry objects to be irradiated.

Generally, the distance between the X-ray module and the supporting bed is equal to the distance between the image detection module and the supporting bed. When performing the imaging procedure, the X-ray module and the image detection module are centered on the carrier bed and rotate clockwise or counterclockwise relative to the carrier bed to generate X-ray images of the irradiated object.

For different irradiated objects (for example, different animals), users may need images with different resolutions. In a general imaging system, the imaging system can adjust the image resolution by adjusting the distance between the X-ray module/image detection module and the supporting bed, thereby obtaining the field of view (FoV) required by the user. ).

However, for irradiated objects of different sizes, the imaging system may need to install different types of support beds, and different types of support beds may have different volumes (such as width and height).

As mentioned above, if the user needs a higher resolution, it means that the distance between the X-ray module/image detection module and the bed will be smaller. If the user has insufficient experience and chooses an inappropriate resolution, the X-ray module/image detection module and the distance between the X-ray module and the carrier bed may be too small due to the large size of the carrier bed, making the X-ray module /The image detection module collided with the bed during the rotation, causing damage.

The main purpose of the present invention is to provide a radiography system with a load-bearing anti-collision mechanism and an anti-collision method, which can identify the type of load-bearing bed currently installed, and automatically determine the one that can be selected by the user according to the type of the load-bearing bed. Or multiple contrast modes.

In order to achieve the above-mentioned purpose, the radiography system with a load-bearing anti-collision mechanism of the present invention mainly includes: a machine platform; a load-bearing bed detachably installed on the machine platform; An X-ray module and an image detection module; a processing unit; and a man-machine interface for providing multiple imaging modes, wherein each imaging mode corresponds to a different imaging distance.

When the supporting bed is installed on the machine platform, the processing unit recognizes a supporting bed type of the supporting bed through the machine platform. Then, the processing unit determines a safe distance of the X-ray module and the image detection module relative to the supporting bed according to the type of the supporting bed. Moreover, the processing unit disables the specific contrast mode on the man-machine interface when the contrast distance of a specific contrast mode in the complex contrast mode is less than the safety distance.

Compared with the related technology, the technical effect of the present invention is that the imaging system can determine different safety distances according to different bearing beds, and then according to the safety distance to disable one or more imaging modes that are too small for the imaging distance. As a result, the user will not be able to select the imaging mode when the imaging distance is too small during operation, thereby avoiding the X-ray module and the image detection module from moving due to the user's selection of an inappropriate imaging mode In the case of a collision bearing bed.

1: Contrast system

10: Processing unit

11: X-ray module

12: Image detection module

13: Machine

131: Navigation interface

14: Carrying bed

141: connection interface

15: storage unit

151: Contrast Mode

152: safety distance

16: Human Machine Interface

21: The first bearing bed

211: connection interface

22: The second bearing bed

221: connection interface

23: The third bearing bed

231: connection interface

L11: Initial first working distance

L12: Initial second working distance

L21: Adjusted first working distance

L22: Adjusted second working distance

Lw: working distance

L01: first working distance

L02: Second working distance

Ls: safety distance

S10~S22: Control steps

S30~S36: Control steps

Fig. 1 is a first specific embodiment of a schematic diagram of the contrast system of the present invention.

Fig. 2 is a first specific embodiment of a block diagram of the radiography system of the present invention.

Fig. 3 is a first specific embodiment of the collision avoidance flowchart of the present invention.

Fig. 4A is a first specific embodiment of the schematic diagram of the supporting bed of the present invention.

FIG. 4B is a first specific embodiment of the human-machine interface diagram of the present invention.

Fig. 5A is a second specific embodiment of the schematic diagram of the supporting bed of the present invention.

Fig. 5B is a second embodiment of the human-machine interface diagram of the present invention.

Fig. 6A is a third specific embodiment of the schematic diagram of the supporting bed of the present invention.

Fig. 6B is a third embodiment of the human-machine interface diagram of the present invention.

Fig. 7 is a first specific embodiment of the angiography flowchart of the present invention.

FIG. 8 is a second specific embodiment of the schematic diagram of the contrast system of the present invention.

For a preferred embodiment of the present invention, with the drawings, the detailed description is as follows.

Refer to Fig. 1, which is a first specific embodiment of a schematic diagram of the contrast system of the present invention. The present invention discloses an imaging system with a bearing bed anti-collision mechanism (hereinafter referred to as the imaging system 1 in the specification). The imaging system 1 at least includes an X-ray module 11, an image detection module 12, and a machine 13 And bearing bed 14. In an embodiment, the imaging system 1 may be a computer tomography (CT) system.

In the embodiment of FIG. 1, the X-ray module 11 is arranged on one side of the machine 13 (for example, directly above), and the image detection module 12 is arranged on the other side of the machine 13 relative to the X-ray module 11. One side (for example, directly below). The supporting bed 14 is detachably installed on the machine table 13. In this embodiment, the carrier bed 14 is arranged between the X-ray module 11 and the image detection module 12, and there is a working distance Lw between the X-ray module 11 and the image detection module 12, and The working distance Lw is variable.

Specifically, the above-mentioned working distance Lw refers to the distance between the X-ray module 11 and the image detection module 12, and the working distance Lw includes the first working distance L01 between the X-ray module 11 and the support bed 14. And the second working distance L02 between the supporting bed 14 and the image detection module 12.

As shown in FIG. 1, the X-ray module 11, the image detection module 12, and the machine 13 are arranged in a straight line. The X-ray module 11 emits X-rays in the direction of the image detection module 12. After the X-ray passes through the bed 14 (that is, the object to be tested carried on the bed 14), it is detected by the image detection module 12, and the image detection module 12 can be based on the detected X The light generates the corresponding image. When the imaging system 1 executes the imaging procedure, the X-ray module 11 and the image detection module 12 are controlled to rotate clockwise or counterclockwise around the bed 14 (or the machine 13).

Before executing the imaging procedure, the user can set the required resolution. The imaging system 1 can adjust the working distance Lw according to the resolution set by the user, so that the image detection module 12 has There is a corresponding Field of View (FoV) so that the generated image has the resolution required by the user.

In one embodiment, the imaging system 1 can adjust the first working distance L01 and the second working distance L02 in the working distance Lw to obtain the required resolution.

In the first embodiment, the first working distance L01 and the second working distance L02 may be the same distance. In the second embodiment, the first working distance L01 may be greater than the second working distance L02. In the third embodiment, the first working distance L01 may be smaller than the second working distance L02.

One of the technical features of the present invention is that by limiting the adjustment range of the working distance Lw, the X-ray module 11 and the image detection module 12 are prevented from colliding with the supporting bed 14 when they move and rotate (details will be described later).

Please also refer to FIG. 2, which is a first specific embodiment of the block diagram of the imaging system of the present invention. As shown in FIG. 2, the imaging system 1 of the present invention further includes a storage unit 15, a man-machine interface 16, and electrically connected to the X-ray module 11, image detection module 12, storage unit 15 and man-machine interface 16.的处理unit10。

The processing unit 10 of the present invention mainly uses the machine 13 to identify the type of the supporting bed 14 when the supporting bed 14 is installed on the machine table 13, and obtains a corresponding safety distance in the storage unit 15 according to the type of the supporting bed Ls. In this implementation, different types of bearing beds 14 have different sizes, and therefore correspond to different safety distances Ls. In one embodiment, the larger the size of the bearing bed 14 corresponds to the larger the safety distance Ls.

Specifically, the safety distance Ls is a distance extending outwards centered on the supporting bed 14. As long as the first working distance L01 is less than the safety distance Ls, the X-ray module 11 will The carrier bed 14 was hit during the imaging procedure. Moreover, as long as the second working distance L02 is less than the safety distance Ls, the image detection module 12 will collide with the bed 14 during the imaging procedure.

For example, the type of the load-bearing bed may include a large-sized load-bearing bed corresponding to the first safety distance, a medium-sized load-bearing bed corresponding to the second safety distance, and a small-sized load-bearing bed corresponding to the third safety distance. It is larger than the size of the medium-sized bed, the size of the medium-sized bed is larger than the size of the small-sized bed, and the first safety distance is greater than the second safety distance, and the second safety distance is greater than the third safety distance.

In the present invention, the safety distance Ls refers to when the processing unit 10 adjusts the working distance Lw according to the safety distance Ls (that is, the first working distance L01 and the second working distance L02 are respectively equal to the safety distance Ls), and When controlling the X-ray module 11 and the image detection module 12 to execute the imaging procedure based on the safety distance Ls, the distance that is closest to the supporting bed 14 but never hits the supporting bed 14 (and the machine 13). In other words, as long as the first working distance L01 and the second working distance L02 are not less than the safety distance Ls, no matter how the X-ray module 11 and the image detection module 12 move, they will not collide with the bed 14 and the machine. Table 13.

In the first embodiment, the processing unit 10 can sense the weight of the supporting bed 14 when the supporting bed 14 is set on the machine table 13 and determine the type of the supporting bed 14 based on the weight. Generally speaking, the larger the size of the supporting bed 14 is, the heavier the weight, so the processing unit 10 can identify the type of supporting bed 14 based on the measured weight.

In the second embodiment, the imaging system 1 can be provided with an image capture module (not shown in the figure) on the machine 13, and the processing unit 10 can control the image capture module to capture the image of the bed 14, and perform the image processing. After image analysis, the appearance information such as the size or appearance of the bearing bed 14 is obtained, and finally according to the external Observe the information to determine the type of the supporting bed 14. In this embodiment, supporting beds 14 of different sizes may have different appearances, so the processing unit 10 can identify the type of supporting beds 14 by the appearance.

In the third embodiment, the machine platform 13 may have a guiding interface 131, and the supporting bed 14 may have a connecting interface 141. When the supporting bed 14 is installed on the machine table 13, the supporting bed 14 and the machine table 13 are electrically connected to each other through the connecting interface 141 and the connecting interface 131. In this embodiment, the processing unit 10 can receive the identification signal sent by the supporting bed 14 through the guiding interface 131 on the machine 13 and the connection interface 141 on the supporting bed 14, and then identify the supporting bed 14 according to the content of the identification signal The type of bearing bed.

In the fourth embodiment, different support beds 14 are connected to the guiding interface 131 on the machine 13 through the same connection interface 141, and different content identification signals are sent to the machine 13 through the connection interface 141, and through different The identification signal indicates different types of bed.

In the fifth embodiment, different bearing beds 14 can be connected to the machine 13 through different connection interfaces 141, and the different connection interfaces 141 have different pin settings. Since the pin settings on the connection interface 141 are different, when the bed 14 is set on the machine 13, the electronic signals received by the connection interface 131 from the connection interface 141 will be different. The processing unit 14 can determine the identification signal according to the content of the electronic signal received by the interface 131, thereby identifying the type of bed.

However, the foregoing are only specific implementation examples of the present invention, but should not be limited to the foregoing manner.

The storage unit 15 stores a plurality of imaging modes 151, and the imaging system 1 provides and displays the plurality of imaging modes 151 through the human-machine interface 16 for the user to select. In this embodiment, different contrast modes 151 respectively correspond to different contrast distances. The contrast distance refers to the first contrast distance between the X-ray module 11 and the bed 14 when performing the contrast procedure (Source to Object Distance). , SOD) or the second contrast distance between the image detection module 12 and the bed 14 (Object to Image Distance, OID). In other words, the contrast system 1 has different resolutions in each contrast mode 151 respectively. When the user selects different imaging modes 151 to execute the imaging procedure, the image detection module 12 can finally generate images with different resolutions.

In the present invention, the processing unit 10 can determine the safety distance Ls according to the type of the supporting bed 14 currently installed on the machine platform 13, and determine which appropriate imaging modes to display on the human-machine interface 16 according to the safety distance Ls 151 Only the user makes a selection.

Specifically, after the processing unit 10 determines the safety distance Ls, it accesses the complex imaging mode 151 in the storage unit 15, and disables one or more imaging distances in the complex imaging mode 151 that are less than the safety distance Ls. The contrast mode 151 (ie, the first contrast distance is less than the safety distance Ls, or the second contrast distance is less than the safety distance Ls). If the first contrast distance and the second contrast distance of the complex contrast mode 151 are both greater than the safety distance Ls, the processing unit 10 will enable all contrast modes 151. Finally, the processing unit 10 regards the one or more contrast modes 151 that are not disabled as appropriate contrast modes 151 (that is, the contrast modes suitable for the currently set support bed 14), and compares these appropriate contrast modes 151 Displayed on the man-machine interface 16 for the user to choose and use.

In one embodiment, the processing unit 10 displays all the imaging modes 151 in the storage unit 15 on the human-machine interface 16, and only allows the user to select one or more imaging modes 151 that are not disabled. In another embodiment, the processing unit 10 only displays one or more imaging modes 151 that are not disabled on the HMI 16 (ie, the user can select all the imaging modes 151 displayed on the HMI 16).

Through the above technical solution, the imaging system 1 can disable the imaging mode 151 (including the first imaging distance is too small or the second imaging distance is too small) according to the currently set bearing bed 14 to allow the user Cannot select the imaging mode with too small imaging distance on the HMI 16 151 Avoid the problem that the X-ray module 11 and the image detection module 12 collide with the bed 14 and/or the machine 13 during the process of performing the imaging procedure. The above-mentioned contrast distance is too small, which refers to the contrast distance which is insufficient relative to the size of the bearing bed 14.

Please continue to refer to FIG. 3, which is a first specific embodiment of the collision avoidance flowchart of the present invention. The present invention also discloses an anti-collision method of the imaging system (hereinafter referred to as the anti-collision method). FIG. 3 is used to describe in detail the various related steps of the anti-collision method. These steps are mainly composed of the imaging system shown in FIG. Executed by system 1.

First, when the user has a need for imaging, the imaging system 1 of the present invention must be activated (step S10). After the imaging system 1 is started, the processing unit 10 first judges whether the supporting bed 14 has been set on the machine 13 (step S12). In the present invention, the imaging system 1 mainly uses the X-ray module 11 to irradiate the object to be tested (not shown in the figure) in the bearing bed 14, and the image detection module 12 detects the X-ray that penetrates the object to be tested. And generate the corresponding image. If the bed 14 is not set on the machine 13, the imaging system 1 will be in a standby state.

After judging that the supporting bed 14 is set on the machine table 13, the processing unit 10 can identify the type of the supporting bed of the supporting bed 14 currently installed by the machine table 13 (step S14). Specifically, the processing unit 10 can determine that the supporting bed 14 has been set to the machine 13 when the machine 13 detects the weight of the supporting bed 14, captures an image of the supporting bed 14, or receives an electronic signal from the supporting bed 14 on. Moreover, the processing unit 10 can confirm the identification signal corresponding to the supporting bed 14 according to the weight, image or electronic signal, thereby identifying the type of supporting bed 14 (for example, large supporting bed, medium supporting bed, or small supporting bed, etc. ). However, the above are only some specific implementation examples of the present invention, and should not be limited to the above.

After step S14, the processing unit 10 further determines a safety distance Ls of the X-ray module 11 and the image detection module 12 relative to the support bed 14 according to the type of the support bed (step S16).

Specifically, the processing unit 10 queries the storage unit 15 according to the type of the supporting bed 14 currently installed, and reads a safety distance Ls corresponding to the type of the supporting bed in the storage unit 15. In this embodiment, the safety distance Ls refers to a distance extending outward with the support bed 14 as the center. When the processing unit 10 makes the first working distance L01 equal to the safety distance Ls, and makes the second working distance L02 equal to the safety distance Ls), that is, when moving and rotating based on the safety distance Ls to realize the imaging procedure, the X-ray The module 11 and the image detection module 12 will be closest to the supporting bed 14 but will never collide with the machine 13 and the supporting bed 14.

After step S16, the processing unit 10 further accesses the complex imaging mode 151 to be provided by the man-machine interface 16, and determines whether any of the complex imaging modes has a specific imaging mode whose imaging distance is less than the safety distance Ls (step S18). In step S18, the processing unit 10 mainly determines whether the first contrast distance of each contrast mode is less than the safety distance Ls, and determines whether the second contrast distance of each contrast mode is less than the safety distance Ls.

In this embodiment, the multiple contrast modes 151 are stored in the storage unit 15 and each contrast mode 151 has a different contrast distance. The first contrast distance and the second contrast distance of each contrast mode 151 may be the same or different. When the imaging system 1 controls the X-ray module 11 and the image detection module 12 to perform the imaging procedure based on different imaging modes 151, images with different resolutions can be obtained. Different contrast modes 151 can correspond to different resolution magnifications. The resolution magnification is equal to the resolution of the image detection module 12 divided by the resolution of the field of view in different contrast modes, which is also equal to the first contrast distance (SOD) and The relationship of the second contrast distance (OID). In one embodiment, the relational expression is, for example, the sum of the first imaging distance (SOD) and the second imaging distance (OID) divided by the first imaging distance (SOD).

If it is determined in step S18 that all the contrast distances of all the contrast modes 151 in the storage unit 15 are greater than or equal to the safe distance Ls (for example, the first contrast distance is greater than or equal to the safe distance Ls, and the second contrast distance is also greater than or equal to the safe distance Ls) Distance Ls), the processing unit 10 does not perform any processing on the complex contrast mode 151 in the storage unit 15.

Conversely, if it is determined in step S18 that any one of the contrasting distances of the one or more contrast modes 151 is smaller than the safety distance Ls (for example, the first contrasting distance or the second contrasting distance of a specific contrast mode is smaller than the safe distance Ls), the processing unit 10 disables the specific contrast mode (step S20). After step S18 or step S20, the processing unit 10 controls the man-machine interface 16 to display one or more contrast modes 151 that are not disabled (step S22). In other words, as long as one of the first contrast distance and the second contrast distance used by a contrast mode 151 is less than the safety distance Ls obtained by the processing unit 10, it means that this contrast mode is not suitable for the current setting of the support bed 14. Size, the processing unit 10 will disable this inappropriate contrast mode 151.

In one embodiment, the specific contrast mode disabled in step S20 is not displayed or darkened on the human-machine interface 16. In another embodiment, although the specific contrast mode disabled in step S20 is displayed on the human-machine interface 16, it cannot be selected by the user. Thereby, no matter which imaging mode 151 is selected by the user on the man-machine interface 16, the X-ray module 11 and the image detection module 12 will not collide with the carrier bed 14 and the machine 13 when the imaging system 1 is operating. Status.

Please refer to FIG. 4A and FIG. 4B at the same time. FIG. 4A is the first embodiment of the schematic diagram of the supporting bed of the present invention, and FIG. 4B is the first specific embodiment of the schematic diagram of the human-machine interface of the present invention.

In the embodiment of FIG. 4A, the imaging system 1 uses a first supporting bed 21, which is installed on the machine table 13 and is electrically connected to the guiding interface 131 on the machine table 13 through a connecting interface 211 . In this embodiment, the machine 13 receives and indicates the location by setting the pins on the connection interface 211. The identification signal of the type of the supporting bed of the first supporting bed 21 (for example, indicating that the first supporting bed 21 is a large supporting bed).

In the embodiment of FIG. 4B, the imaging system 1 can preset to store at least four imaging modes 151, including a first mode, a second mode, a third mode, and a fourth mode. Among them, the resolution of the field of view (FOV) in the first mode is 44.9μm, the resolution of the field of view (FOV) in the second mode is 22.5μm, the resolution of the field of view (FOV) in the third mode is 15μm and The resolution of the field of view (FOV) in the fourth mode is 9 μm. The resolution of the field of view (FOV) refers to the size of each pixel (pixel) that can be generated by the image detection module 12 in the corresponding imaging mode 151, and this field of view is compared with the imaging mode used by each imaging mode 151 The distance (such as the first contrast distance or the second contrast distance) is related.

For example, assuming that the resolution of the image detection module 12 is 75μm and the first mode is selected, the resolution magnification is about 1.6 times, then (first imaging distance (SOD) + second imaging distance (OID)) divided by The first contrast distance (SOD) must be equal to 1.6. According to the above relational expression, there is a corresponding contrast distance (the first contrast distance and the second contrast distance) in each contrast mode.

In one embodiment, since the size of the first supporting bed 21 (which is a large supporting bed) is larger, the contrast distance (first contrast distance, second contrast distance) in the second mode, third mode, and fourth mode Is smaller than the safety distance Ls corresponding to the first supporting bed 21, so after the first supporting bed 21 is installed on the machine table 13, the processing unit 10 will compare the safety distance Ls corresponding to the first supporting bed 21 to the imaging system 1 The plural contrast modes 151 are filtered, and the second mode, the third mode, and the fourth mode are disabled if the contrast distance (first contrast distance, second contrast distance) is too small.

As shown in FIG. 4B, if the first bed 21 is used on the imaging system 1, the user can only select the first mode on the human-machine interface 16. Since the contrast distance (first contrast distance, second contrast distance) used in the first mode is greater than the safety distance Ls corresponding to the first bed 21, when the contrast system When the X-ray module 11 and the image detection module 12 are controlled to perform the imaging procedure based on the imaging distance of the first mode, the X-ray module 11 and the image detection module 12 can never collide with the first bed 21 and machine 13.

Please refer to FIG. 5A and FIG. 5B at the same time. FIG. 5A is the second embodiment of the schematic diagram of the supporting bed of the present invention, and FIG. 5B is the second embodiment of the schematic diagram of the human-machine interface of the present invention.

In the embodiment of FIG. 5A, the imaging system 1 uses a second supporting bed 22, and the second supporting bed 22 is electrically connected to the guiding interface 131 of the machine 13 through the connecting interface 221. In this embodiment, the machine 13 recognizes the type of supporting bed (for example, a medium-sized supporting bed) of the second supporting bed 22 through the setting of feet on the connection interface 221.

Next, as shown in FIG. 5B, the size of the second supporting bed 22 (a medium-sized supporting bed) is smaller than that of the first supporting bed 21, and only the contrast distance of the third mode and the fourth mode (first contrast distance, second contrast distance ) Will be smaller than the safety distance Ls corresponding to the second bearing bed 22. Therefore, after the second carrier bed 22 is installed on the machine table 13, the processing unit 10 will disable the radiography distance (first radiography distance, second radiography distance) that is too small according to the safety distance Ls corresponding to the second support bed 22 Three mode and fourth mode.

As shown in FIG. 5B, if the second bed 22 is used on the imaging system 1, the user can only select the first mode or the second mode on the human-machine interface 16. Since the radiography distances (first radiography distance, second radiography distance) used in the first mode and the second mode are both greater than the safety distance Ls corresponding to the second bed 22, when the radiography system 1 controls the X-ray module 11 and When the image detection module 12 performs the imaging procedure based on the imaging distance of the first mode or the second mode, it can ensure that the X-ray module 11 and the image detection module 12 will never collide with the second bed 22 and the machine 13 .

Please refer to FIGS. 6A and 6B at the same time. FIG. 6A is the third embodiment of the schematic diagram of the supporting bed of the present invention, and FIG. 6B is the third embodiment of the schematic diagram of the human-machine interface of the present invention.

In the embodiment of FIG. 6A, the imaging system 1 uses a third supporting bed 23, and the third supporting bed 23 is electrically connected to the guiding interface 131 of the machine 13 through the connecting interface 231. In this embodiment, the machine 13 recognizes the type of the supporting bed of the third supporting bed 23 (for example, a small supporting bed) through the setting of the feet on the connecting interface 231.

Next, as shown in FIG. 6B, the size of the third bearing bed 23 (a small bearing bed) is smaller than the first bearing bed 21 and the second bearing bed 22, and the contrast distance of all the contrast modes in the storage unit 15 (the first Both the imaging distance and the second imaging distance are greater than or equal to the safety distance Ls corresponding to the third bearing bed 23. Therefore, after the third supporting bed 23 is installed on the machine table 13, the processing unit 10 will not disable any imaging mode (or, the processing unit 10 will enable all the imaging modes in the storage unit 15).

As shown in FIG. 6B, if the third bed 23 is used on the imaging system 1, the user can select all imaging modes supported by the imaging system 1 on the human-machine interface 16, regardless of the X-ray module 11 and the image The detection module 12 executes the imaging procedure based on the imaging distance of which imaging mode, and will not collide with the third bed 23 and the machine 13.

It is worth mentioning that if the X-ray module 11 and the image detection module 12 perform the imaging procedure based on the fourth mode, the imaging speed will be slower, but the resolution of the generated image will be higher. If the X-ray module 11 and the image detection module 12 perform the imaging procedure based on the first mode, the imaging speed will be faster, but the resolution of the generated image will be lower. Therefore, the user can arbitrarily select the appropriate imaging mode 151 on the man-machine interface 16 according to actual needs, and there is no need to worry about the X-ray module 11/image detection module 12 colliding with the bed 23 or the machine 13 .

In one embodiment, the types of supporting beds include at least a large supporting bed (such as the first supporting bed 21), a medium supporting bed (such as the second supporting bed 22), and a small supporting bed (such as the third supporting bed). 23). Among them, the safety distance Ls of the large bearing bed is greater than the safety distance Ls of the medium bearing bed, while The safety distance Ls of the type bearing bed is greater than the safety distance Ls of the small bearing bed. When the processing unit 10 recognizes that the currently installed carrier bed 14 is a small carrier bed, it will enable all the imaging modes 151 that the imaging system 1 can support. In other words, the smallest size carrier bed that can be used in the imaging system 1 needs to be suitable for all imaging modes 151 stored in the storage unit 15 (that is, the safety distance Ls corresponding to the smallest size carrier bed must be smaller than all imaging modes 151 first contrast distance and second contrast distance).

Please continue to refer to FIG. 7, which is the first specific embodiment of the imaging flowchart of the present invention. FIG. 7 is used to illustrate in detail the execution steps of the imaging system 1 of the present invention when the user selects any of the imaging modes 151 that are not disabled.

As shown in Figure 7, after the imaging system 1 is installed on a bed 14, and the man-machine interface 16 displays one or more imaging modes 151 that are not disabled, the man-machine interface 16 can accept external operations from the user , And select an undisabled contrast mode 151 according to the content of the external operation (step S30).

After the user selects any contrast mode 151, the processing unit 10 obtains the contrast distance of the selected contrast mode 151 (step S32), and adjusts the X-ray module 11 and the image detection module 12 relative to each other according to the contrast distance The working distance Lw to the supporting bed 14 (step S34).

Specifically, in step S34, the processing unit 10 adjusts the positions of the X-ray module 11 and the image detection module 12 (for example, the position on the motor shaft) according to the obtained contrast distance, so that the adjusted X-ray model The first working distance L01 between the group 11 and the bed 14 will be equal to the first contrast distance of the selected contrast mode 151, and the second working distance L02 between the image detection module 12 and the bed 14 will be the same It is equal to the second contrast distance of the selected contrast mode 151. Moreover, the adjusted first working distance L01 and the adjusted second working distance L02 are respectively greater than or equal to the safety distance Ls corresponding to the bearing bed 14.

After step S34, the processing unit 10 can further control the X-ray module 11 and the image detection module 12 so that the X-ray module 11 and the image detection module 12 are based on the adjusted working distance Lw (including the adjusted first A working distance L01 and an adjusted second working distance L02) to execute the imaging procedure (step S36). In the imaging procedure, the X-ray module 11 and the image detection module 12 are mainly centered on the supporting bed 14 or the machine 13 and rotate in a clockwise or counterclockwise direction, and perform X-ray emission and detection. Measure to generate the corresponding image.

Please also refer to FIG. 8, which is a second specific embodiment of the schematic diagram of the imaging system of the present invention. As shown in FIG. 8, when the imaging system 1 just starts up or enters the standby mode, there is an initial working distance between the X-ray module 11 and the image detection module 12. Specifically, when the imaging system 1 is just started, there is an initial first working distance L11 between the X-ray module 11 and the supporting bed 14 (or the machine 13), and the distance between the supporting bed 14 (or the machine 13) is An initial second working distance L12.

After a supporting bed 14 is installed on the machine table 13, the processing unit 10 can obtain a safety distance Ls corresponding to the supporting bed 14. Then, the processing unit 10 executes a filtering procedure to display on the man-machine interface 16 that the conditions are met (ie, the first imaging distance is greater than or equal to the safety distance Ls, and the second imaging distance is also greater than or equal to the safety distance Ls ) All imaging modes 151.

When the user selects any contrast mode 151 on the man-machine interface 16, the processing unit 10 adjusts the positions of the X-ray module 11 and the image detection module 12 according to the contrast distance of the selected contrast mode 151, so that The X-ray module 11 and the image detection module 12 are separated by an adjusted working distance.

Specifically, the contrast distance of the contrast mode 151 may be the first contrast distance between the X-ray module 11 and the bed 14 or the second contrast distance between the support bed 14 and the image detection module 12. The processing unit 10 mainly adjusts the position of the X-ray module 11 according to the first contrast distance of the selected contrast mode 151, so that the X-ray module 11 and the bed 14 are separated by an adjusted first working distance L21, and The processing unit 10 adjusts the position of the image detection module 12 according to the second contrast distance of the selected contrast mode 151 so that there is an adjusted second working distance L22 between the supporting bed 14 and the image detection module 12. And the first contrast distance (ie, the adjusted first working distance L21) of the selected contrast mode 151 must be greater than or equal to the safety distance Ls, and the second contrast distance (ie, the adjusted second working distance L22) is also Must be greater than or equal to the safety distance Ls.

The imaging procedure is executed based on the adjusted working distance (including the adjusted first working distance L21 and the adjusted second working distance L22), and the image finally generated by the image detection module 12 may have the imaging mode selected by the user 151 The corresponding resolution.

Through the above-mentioned imaging system and collision avoidance method of the present invention, the user cannot select the imaging mode with inappropriate distance/resolution during operation, so the situation of the X-ray module/image detection module colliding with the bed can be effectively avoided. It is quite convenient for users.

The above are only preferred specific examples of the present invention, and are not limited to the scope of the patent of the present invention. Therefore, all equivalent changes made by using the content of the present invention are included in the scope of the present invention in the same way. Bright.

S10~S22: Control steps

Claims (12)

A radiography system with a load-bearing bed collision avoidance mechanism includes: a machine table; a load-bearing bed, which is detachably arranged on the machine table; an X-ray module, which is arranged on one side of the machine table and is connected to the load The bed is separated by a first working distance; an image detection module is arranged on the other side of the machine relative to the X-ray module and is separated from the supporting bed by a second working distance; a processing unit, electrical Connect the machine, the X-ray module and the image detection module, and use the machine to identify a carrier bed type of the carrier bed; and a human-machine interface that provides multiple imaging modes, each of which corresponds to A different contrast distance and different resolution, wherein the contrast distance is a first contrast distance of the X-ray module relative to the supporting bed or a second contrast distance of the supporting bed relative to the image detection module Distance; wherein, the processing unit determines a safe distance between the X-ray module and the image detection module relative to the supporting bed according to the type of the supporting bed, and in the plurality of imaging modes of the specific imaging mode When the first imaging distance or the second imaging distance is less than the safety distance, the specific imaging mode is disabled. The radiography system with a bearing bed collision avoidance mechanism according to claim 1, wherein the safe distance is when the processing unit adjusts the first working distance and the second working distance to the safe distance and controls the X-ray mode When the group and the image detection module perform an imaging procedure, the X-ray module and the image detection module are the closest to but do not collide with the supporting bed. The radiography system with a bearing bed collision avoidance mechanism according to claim 1, wherein the machine has a guiding interface, the bearing bed has a connection interface, and the machine is electrically connected through the guiding interface and the connection interface For the supporting bed, the processing unit receives an identification signal of the supporting bed through the connecting interface and the connecting interface, and identifies the type of the supporting bed of the supporting bed according to the content of the identification signal. The radiography system with a bed collision avoidance mechanism according to claim 1, wherein the human-machine interface accepts an external operation to select one of the one or more radiography modes that are not disabled, and the processing unit is based on the The first contrast distance of the selected contrast mode adjusts the first working distance of the X-ray module relative to the bed, and the relative adjustment of the image detection module is based on the second contrast distance of the selected contrast mode At the second working distance of the supporting bed, and control the X-ray module and the image detection module to perform an imaging procedure based on the adjusted first working distance and the adjusted second working distance, wherein the adjustment The subsequent first working distance is equal to the first imaging distance, and the adjusted second working distance is equal to the second imaging distance. The radiography system with a load-bearing bed collision avoidance mechanism according to claim 1, wherein the type of the load-bearing bed includes at least a large-sized load-bearing bed, a medium-sized load-bearing bed and a small-sized load-bearing bed, and the safety distance of the large-sized load-bearing bed is larger than that of the medium-sized load The safe distance of the bearing bed, the safe distance of the medium bearing bed is greater than the safe distance of the small bearing bed, and the processing unit enables all the imaging modes when identifying the bearing bed as the small bearing bed. The radiography system with a bed collision avoidance mechanism according to claim 1, wherein the processing unit corresponds to a plurality of resolution magnifications according to the radiography modes, and the resolution magnifications are respectively equal to the second radiography mode A relational expression of a contrast distance and the second contrast distance, wherein the relational expression is: (the first contrast distance+the second contrast distance)/the first contrast distance. An anti-collision method for a radiography system, which is applied to a radiography system, the radiography system includes a machine, a bearing bed detachably arranged on the machine, and arranged on one side of the machine and spaced apart from the bearing bed An X-ray module with a first working distance, an image detection module, a processing unit, and an image detection module arranged on the other side of the machine relative to the X-ray module and separated from the supporting bed by a second working distance A human-machine interface, the collision avoidance method includes the following steps: a) when the load-bearing bed is set on the machine platform, the processing unit recognizes a load-bearing bed type of the load-bearing bed through the machine; b) the processing unit is based on The type of the supporting bed determines a safe distance between the X-ray module and the image detection module relative to the supporting bed; c) the processing unit accesses a plurality of imaging modes provided by the man-machine interface, and each of the imaging modes Corresponding to a different imaging distance and having different resolutions, the imaging distance is a first imaging distance of the X-ray module relative to the supporting bed or a first imaging distance of the supporting bed relative to the image detection module Two contrast distances; d) the processing unit determines whether the complex contrast mode has the first contrast distance or a specific contrast mode with the second contrast distance smaller than the safe distance; e) has the specific contrast in the complex contrast mode In the mode, the processing unit disables the specific contrast mode; and f) the processing unit controls the man-machine interface to display one or more of the contrast modes that are not disabled. The collision avoidance method of the radiography system according to claim 7, wherein the safety distance is when the processing unit adjusts the first working distance and the second working distance to the safety distance and controls the X-ray module and the image When the detection module performs an imaging procedure, the X-ray module and the image detection module are the closest to but will not collide with the carrier bed. The collision avoidance method of the imaging system according to claim 7, wherein the machine has a guiding interface, the bearing bed has a connection interface, and the machine is electrically connected to the bearing bed through the guiding interface and the connection interface In the step a), the processing unit receives an identification signal of the bearing bed through the connecting interface and the connection interface, and identifies the bearing bed type of the bearing bed according to the content of the identification signal. The collision avoidance method of the imaging system according to claim 7, which further includes the following steps: g) the human-machine interface accepts an external operation to select one of the one or more imaging modes that are not disabled; h ) The processing unit obtains the first contrast distance and the second contrast distance of the selected contrast mode; i) the processing unit adjusts the X-ray module relative to the first contrast of the bed according to the first contrast distance Working distance, adjusting the second working distance of the image detection module relative to the bed according to the second contrast distance, so that the adjusted first working distance is equal to the first contrast distance and the adjusted second Two working distances are equal to the second radiography distance; and j) the processing unit controls the X-ray module and the image detection module to perform one based on the adjusted first working distance and the adjusted second working distance Contrast procedure. The anti-collision method of the imaging system according to claim 7, wherein the type of the supporting bed includes at least a large supporting bed, a medium supporting bed and a small supporting bed, and the safety distance of the large supporting bed is greater than that of the medium supporting bed. The safe distance, the safe distance of the medium-sized bed is greater than the safe distance of the small-sized bed, and the processing unit enables all the imaging modes when identifying the bed as the small-sized bed. The collision avoidance method of the imaging system according to claim 7, wherein each of the imaging modes corresponds to a different resolution magnification, and each resolution magnification is equal to each of the imaging modes A relational expression of the first contrast-enhanced distance and the second contrast-enhanced distance, wherein the relational expression is: (the first contrast-enhanced distance+the second contrast-enhanced distance)/the first contrast-enhanced distance.

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