CN211534415U

CN211534415U - Medical imaging system

Info

Publication number: CN211534415U
Application number: CN201922115639.5U
Authority: CN
Inventors: 毛苏杭
Original assignee: Shanghai United Imaging Healthcare Co Ltd
Current assignee: Shanghai United Imaging Healthcare Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-09-22
Anticipated expiration: 2029-11-29

Abstract

The present application discloses a medical imaging system. An imaging signal of a scanned object is acquired by a scanner device. The bore in the scanner device has a geometric center. And coordinate axes orthogonal to each other in the X direction, the Y direction and the Z direction are formed based on the geometric center as an origin. The monitoring device comprises an even number of cameras. An even number of cameras are arranged on both sides of a YZ reference plane or a first plane parallel to the YZ reference plane, and thus the coverage area of the cameras in the horizontal direction can be increased. And the connecting line of at least two cameras in the even number of cameras is intersected with the XY reference plane or a second plane parallel to the XY reference plane, so that the coverage area of the cameras in the vertical direction can be increased. Therefore, after the scanned object on the bed plate is pushed into the hole cavity through the support table, the scanned object can be monitored in all directions by using the monitoring equipment, and whether the scanned object is in an ideal scanning state or not can be conveniently known.

Description

Medical imaging system

Technical Field

The present application relates to the field of medical devices, and more particularly to a medical imaging system.

Background

The development of medical scanner device technology is more and more rapid, and especially with the continuous innovation and development of medical technology in recent years, various medical devices, especially high-end imaging medical devices such as Computed Tomography (CT), Magnetic Resonance (MR), Positron Emission Tomography (PET), and the like, are in the world. The high-end image medical equipment can accurately position the focus and display the change of the microscopic structure of the focus, and is beneficial to early, fast, accurate and comprehensive discovery of the focus. Taking the MR imaging technology as an example, the imaging method has no ionizing radiation damage to a human body, the soft tissue structure is displayed clearly, and multiple sequence imaging and multiple image types provide more abundant image information for determining the nature of lesion.

However, in scanning a patient using the medical scanner device to acquire images, the patient is typically transported to the imaging area using laser lamp positioning and is required to remain breath-held or stationary within the bore of the medical scanner device. On the one hand, most medical devices require a long examination time, and various noises are generated by the devices during operation, which may cause discomfort to the patient and thus involuntary movement of the patient. On the other hand, the bore of a medical scanner device is a closed structure in the circumferential direction, and the radial dimension is relatively small, for example, in an MR scanner device, the length of the bore exceeds one meter, the diameter is about fifty centimeters, and some patients may not be able to complete the examination well due to fear. These factors make it difficult to monitor patient movement after the patient enters the bore, and it is not known whether the patient is in the desired scanning position. This affects the effect of the final scanned image.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a medical imaging system that addresses the above-mentioned problems.

A medical imaging system, comprising:

a scanner device having a bore for receiving a scanned object, the bore having a geometric center and defining an X direction, a Y direction, and a Z direction for an origin based on the geometric center, the X direction, the Y direction, and the Z direction being orthogonal to one another, the bore extending along the Z direction;

the scanning bed comprises a bed plate and a supporting table, the supporting table is used for supporting the bed plate, the bed plate is used for bearing a scanned object, and the bed plate can move into a hole cavity of the scanner;

the monitoring equipment is connected with the scanner equipment and comprises an even number of cameras, the even number of cameras are arranged on the YZ reference plane or on two sides of a first plane parallel to the YZ reference plane, the hole cavity is divided into three sub-hole cavities with the same length by a third plane and a fourth plane parallel to the XY reference plane along the Z direction, and the monitoring equipment is located in the sub-hole cavities in the middle positions of the three sub-hole cavities.

In one embodiment, the scanner device includes an insulative housing circumferentially surrounding the bore, and the monitoring device is secured to the insulative housing and disposed adjacent to a top of the bore.

In one embodiment, the monitoring device includes a protective case having an arc-shaped body portion, the camera being fixed by the body portion.

In one embodiment, the camera comprises a photoelectric sensor, an amplifier and an analog-to-digital converter, wherein the photoelectric sensor, the amplifier and the analog-to-digital converter are electrically connected;

or, the camera comprises a photoelectric sensor, an amplifier and a photoelectric converter, and the photoelectric sensor, the amplifier and the photoelectric converter are electrically connected.

In one embodiment, at least two cameras in the even number of cameras are arranged on two sides of a YZ reference plane, and a connecting line between the two cameras is perpendicular to the YZ reference plane.

In one embodiment, the scanner device is a magnetic resonance scanner or a computed tomography scanner, and the monitoring device or the camera is externally provided with an electromagnetic shielding layer.

In one embodiment, the protective shell further includes a tail portion extending from the main body portion in the Z direction, the tail portion includes a signal line therein, and the signal line is electrically connected to the camera, and the signal line includes a metal body or an optical fiber.

A medical imaging system, comprising:

a scanner device for acquiring an imaging signal of a scanned object, the scanner device having a bore for receiving the scanned object, the bore having a geometric center and defining an X-direction, a Y-direction, and a Z-direction for an origin based on the geometric center, the X-direction, the Y-direction, and the Z-direction being orthogonal to one another, the bore extending along the Z-direction;

the monitoring equipment is used for detecting the motion state of a scanned object, is connected with the scanner equipment and comprises one or a plurality of cameras, and the cameras are symmetrically arranged on a YZ reference plane or a first plane parallel to the YZ reference plane; and the hole cavity is divided into three sub-hole cavities with the same length by a third plane and a fourth plane which are parallel to the XY reference plane along the Z direction, and the monitoring equipment is positioned in a sub-hole cavity at the middle position of the three sub-hole cavities, or the monitoring equipment is positioned in a sub-hole cavity at the front position of the sub-hole cavity at the middle position, or the monitoring equipment is positioned in a sub-hole cavity at the rear position of the sub-hole cavity at the middle position.

In one embodiment, the monitoring device includes a protective case having an arc-shaped main body portion and a tail portion extending from the main body portion in the Z direction, and the camera is fixed by the main body portion.

In one embodiment, the tail portion includes a signal line or a wireless transmitter therein, and the signal line or the wireless transmitter is connected with the camera.

In one embodiment, the protective shell is affixed to the top of the inner wall of the insulating shell.

In one embodiment, the tail of the protective shell extends to the distal opening of the bore.

Or the tail end of the tail part of the protective shell is inserted into a through hole in the insulating shell, and the through hole is communicated with the cavity.

In one embodiment, the scanner device includes an insulating housing surrounding the bore, the insulating housing having one or more through holes at a top thereof, and the camera disposed outside the insulating housing of the monitoring device being exposed from the through holes.

In one embodiment, a circuit board is disposed within the insulative housing, and the camera is disposed on the circuit board.

In one embodiment, the camera includes a photosensor, an amplifier, and an analog-to-digital converter arranged on the circuit board;

or, the camera comprises a photoelectric sensor, an amplifier and a photoelectric converter, and the photoelectric sensor, the amplifier and the photoelectric converter are arranged on the circuit board.

In one embodiment, the protective case includes an upper case and a lower case assembled together, and the lower case is provided with a downward opening through which the camera is exposed.

In one embodiment, the circuit board is a T-shaped structure, and includes an extension in the X direction and an extension in the Z direction, the photosensor is disposed in the extension in the X direction, and a metal terminal or an optical fiber interface is disposed at a terminal of the extension in the Z direction.

In one embodiment, the cameras are equally spaced in a centrally located sub-cavity.

In one embodiment, the lower end of the camera head is less than 10cm from the insulating housing of the scanner.

The medical imaging system provided by the embodiment of the application. Acquiring, by the scanner device, an imaging signal of a scanned object. The bore in the scanner device has a geometric center. And forming coordinate axes orthogonal to each other in the X direction, the Y direction and the Z direction based on the geometric center as an origin. The monitoring device comprises an even number of cameras. The even number of cameras are arranged on both sides of the YZ reference plane or the first plane parallel to the YZ reference plane, and thus the coverage area of the cameras in the horizontal direction can be increased. And the connecting line of at least two cameras in the even number of cameras is intersected with the XY reference plane or a second plane parallel to the XY reference plane, so that the coverage area of the cameras in the vertical direction can be increased. Therefore, after the scanned object on the bed plate is pushed into the hole cavity through the support table, the scanned object can be monitored in an all-around manner by the monitoring equipment, so that whether the scanned object is in an ideal scanning state or not can be known conveniently.

Drawings

FIG. 1 is an end view of a medical imaging system provided by an embodiment of the present application;

FIG. 2a is a cross-sectional view of a medical imaging system provided by an embodiment of the present application;

FIG. 2b is a cross-sectional view of a medical imaging system according to another embodiment of the present application;

FIG. 2c is a cross-sectional view of a medical imaging system according to yet another embodiment of the present application;

fig. 3 is a schematic view of a protective case provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of component connections provided by an embodiment of the present application;

FIG. 5 is a schematic view of the connection of elements provided in another embodiment of the present application;

fig. 6 is a schematic view of a T-shaped support frame provided in an embodiment of the present application.

Description of reference numerals:

medical imaging system 10

Scanner device 100

Bore 110

Sub-cavities 114

Scanning bed 120

Bed plate 122

Support table 124

Monitoring device 130

Camera 132

Insulating housing 112

Protective housing 1300

Main body 1302

Upper case 1304

Lower case 1306

Opening 1308

Tail 134

Signal line 136

Power cord 138

Fixing screw 141

Photoelectric sensor 142

Amplifier 144

Analog-to-digital converter 146

Photoelectric converter 148

T-shaped support frame 150

Camera 152

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered as limiting the present application.

In this application, unless expressly stated or limited otherwise, 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 intervening media. 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.

Referring to fig. 1-2, an embodiment of the present application provides a medical imaging system 10. The medical imaging system 10 includes a scanner device 100, a scanning bed 120 and a monitoring device 130. The scanner device 100 is used to acquire an imaging signal of a scanned object, which may be, for example, an animal body, a living organism such as a human body, or an inanimate object such as a water phantom. The scanner device 100 has a bore 110 for receiving a scanned object. The bore 110 has a geometric center. And defining an X direction, a Y direction and a Z direction for the origin based on the geometric center. The X direction, the Y direction and the Z direction are mutually orthogonal. The bore 110 extends in the Z-direction. At one port position of the bore 110, the scanning bed 120 is coupled to the scanner device 100. The scanning bed 120 includes a bed plate 122 and a support table 124. The support table 124 is used for supporting the bed plate 122. The couch 122 is for carrying a scanned object, and the couch 122 is movable into the bore 110 of the scanner. The monitoring device 130 is configured to detect motion state information of the scanned object, where the motion state may be a non-autonomous motion state such as respiration, or an autonomous limb motion state such as head movement and leg movement. The monitoring device 130 is connected to the scanner device 100. The monitoring device 130 includes an even number of cameras 132. And the even number of cameras 132 are arranged on both sides of the YZ reference plane or a first plane parallel to the YZ reference plane. And the connecting line of at least two of the even number of cameras 132 is parallel/intersected with the XY reference plane or a second plane parallel to the XY reference plane. The bore 110 is divided in the Z-direction by a third plane parallel to the XY-reference plane, a fourth plane (indicated by dashed lines in fig. 2a-2 c) into three sub-bores 114 of equal length, which include a sub-bore at a central location (the XY-reference plane is orthogonal to the sub-bore and extends substantially through the center of the sub-bore), and two sub-bores at positions in front of and behind the sub-bore at the central location. The monitoring device 130 is located within the sub-bore 114 at an intermediate position of the three sub-bores 114. The monitoring device may also be located in a centrally located sub-cavity in a forward position of the sub-cavity 114, and the monitoring device may also be located in a centrally located sub-cavity in a rearward position of the sub-cavity 114. The even number of cameras arranged inside the cavity 110 can timely obtain the environmental information inside the cavity 110 or the state information of the scanned object. It is understood that the front position may be a side of the cavity 110 at an end coupled to the scanning bed 120. The end surface of the cavity 110 near the front end can be provided with a monitoring device such as a display panel for the physician to operate and observe. The back position is the side of the cavity 110 away from the scanning bed 120.

The scanner device 100 may be an MR scanner, a CT scanner, a PET scanner, or an integrated multi-modality device such as PET-MR, MR-RT (Radiation Therapy positioning), etc. After the scanner device 100 collects the imaging signal of the scanned object, the imaging signal may be sent to a processor for processing, and after reconstruction, a 2D or 3D image of the corresponding scanned part is obtained, so that a doctor can analyze the condition of the scanned object.

The bore 110 may be a cylindrical structure. The several centers may be the midpoints of the central symmetry axes of the cylindrical structure. The bore 110 extends in the Z-direction, i.e. the direction of extension of the central symmetry axis of the cylindrical structure. The X direction, the Y direction, and the Z direction may form a rectangular coordinate system. The Y direction may be a vertical direction. The X direction may be a horizontal direction. Taking the scanned object as a human body as an example, after the scanned object is carried by the bed plate 122 and moved into the bore 110, the front-back direction of the human body is parallel to the Z axis. The human body is symmetrically distributed relative to the YZ reference plane or a first plane parallel to the YZ reference plane. The even number of cameras 132 are arranged on both sides of the YZ reference plane or a first plane parallel to the YZ reference plane, and a connecting line of at least two of the even number of cameras 132 intersects the XY reference plane or a second plane parallel to the XY reference plane. The arrangement mode of the even number of cameras 132 accords with the morphological distribution of a human body, the cameras 132 are favorable for acquiring the motion information of the surface of the human body more accurately, and the detection accuracy is improved. The symmetrically arranged positions of the cameras 132 correspond to the marks symmetrically stuck on the surface of the human body, so that the operation of a doctor is facilitated, and the scanning time is saved. Furthermore, the cameras 132 are symmetrically arranged by taking the XY reference plane as the center, so that the motion information of the human body (the scanned part) synchronously acquired by two or more cameras 132 is facilitated, the analysis and calculation amount of the subsequent motion information is reduced, information feedback can be provided for an operating user in real time, the operating user can take corresponding measures in time, and the efficiency and the quality of scanning and imaging are improved. It is understood that the detection of the status information of the scanned object by the camera 132 may be performed before the scanner device 100 acquires the imaging signal of the scanned object, or may be performed in synchronization with the acquisition of the imaging signal of the scanned object by the scanner device 100.

The bed plate 122 is horizontally disposed on the surface of the support table 124. The bottom of the support table 124 may be provided with pulleys. The support 124 is pushed by the pulleys to facilitate the movement of the scanned object carried by the couch plate 122 into and out of the bore 110. The monitoring device 130 is connected to the scanner device 100, i.e. the monitoring device 130 can be mounted to the scanner device 100 as required. In some embodiments, the monitoring device 130 is connected to the scanner device 100, and the monitoring device 130 is detachably connected or fixedly connected to the scanner device 100 by a tenon, a screw, a welding, a snap-lock connection, or the like.

To facilitate monitoring of the position and status of the scanned object, the monitoring device 130 may be disposed in the bore 110. The monitoring device 130 comprises an even number of cameras 132, i.e. the monitoring device 130 comprises at least two of the cameras 132. The number of the cameras 132 may be 4 or 8. The even number of cameras 132 are disposed on both sides of the YZ reference plane or a first plane parallel to the YZ reference plane, that is, the even number of cameras 132 are symmetrically disposed on both sides of a vertical plane passing through the central symmetry axis or both sides of a plane parallel to the vertical plane. The even number of cameras 132 may be arranged at equal intervals on both sides of the YZ reference plane or a first plane parallel to the YZ reference plane on average. Therefore, the position of the camera 132 in the bore 110 is more uniform, and a larger area can be covered, which facilitates the omnidirectional monitoring of the scanned object. The connecting line of at least two of the even number of cameras 132 intersects with the XY reference plane or a second plane parallel to the XY reference plane, that is, at least two of the even number of cameras 132 are not on the same horizontal plane. It can be understood that at least two of the even number of cameras 132 have different heights in the bore 110, that is, the status of the scanned object can be monitored in different angular directions, thereby further improving the monitoring comprehensiveness. Referring to fig. 2a, considering that the bore 110 has a certain length along the Z direction and the imaging field of view formed by the main magnetic field generally has a certain range, the target detection portion of the scanned object needs to be carried by the couch plate 122 to move to the center of the imaging field of view during the imaging process, and the center of the imaging field of view is generally aligned with the center of the bore 110. In view of this, in the embodiment of the present application, the bore 110 is divided into three sub-bores 114 with the same length along the Z direction by a third plane and a fourth plane parallel to the XY reference plane, and the monitoring device 130 is disposed in the sub-bore 114 at the middle position among the three sub-bores 114.

It is understood that the scanned subject may have a marker disposed thereon. The camera 132 may be used to acquire marker information on the scanned subject. And judging the position of the scanned object according to the position of the marker. In one embodiment. The monitoring device 130 may be a CCD camera. The camera 132 may be a lens of the CCD camera. The CCD camera can be powered by low voltage, so that a grounding wire is not needed, and the equipment circuit is simplified. The motion state information of the scanned object can be judged by comparing the front and back of the pictures shot by the CCD camera at different moments.

The medical imaging system 10 provided by the embodiment of the application. An imaging signal of a scanned object is acquired by the scanner device 100. The bore 110 in the scanner device 100 has a geometric center. And forming coordinate axes orthogonal to each other in the X direction, the Y direction and the Z direction based on the geometric center as an origin. The monitoring device 130 includes an even number of cameras 132. The even number of cameras 132 are arranged on both sides of the YZ reference plane or the first plane parallel to the YZ reference plane, and thus the coverage area of the cameras 132 in the horizontal direction can be increased. And the connecting line of at least two of the even number of cameras 132 intersects with the XY reference plane or a second plane parallel to the XY reference plane, so that the coverage area of the cameras 132 in the vertical direction can be increased. Therefore, after the object to be scanned on the top board 122 is pushed into the bore 110 by the supporting platform 124, the object to be scanned can be monitored in all directions by the monitoring device 130, so that it is convenient to know whether the object to be scanned is in an ideal scanning state, and it is convenient to adjust a scanning sequence in time according to the state of the object to be scanned in the scanning process, thereby improving the success rate and accuracy of scanning.

In one embodiment, the scanner device 100 includes an insulating housing 112 that circumferentially surrounds the bore 110. The monitoring device 130 is secured to the insulating housing 112. And is disposed adjacent to the top of the bore 110. The insulative housing 112 surrounds the bore 110. The insulating housing 112 may be made of thermoplastic synthetic resin such as polyethylene, polytetrafluoroethylene, polyvinyl chloride, and methyl methacrylate, or thermosetting synthetic resin such as phenol resin, epoxy resin, and silicone resin, or insulating material such as plastic.

The monitoring device 130 may be a component that includes the camera 132. The monitoring device 130 may be disposed on top of the bore 110 and may thus have a larger image capture field of view. In addition, the monitoring device 130 may be far from the object to be detected, and the distance between the lower end of the camera 132 and the insulating housing 112 of the scanner may be set to be smaller than a set distance, so as to prevent the object to be detected from colliding with the monitoring device 130.

The monitoring device 130 may be integrated into the scanner dielectric housing 112 or embedded within the scanner dielectric housing 112. In one embodiment, the monitoring device 130 may be configured as follows: the surface of the insulating housing 112 of the scanner facing away from the detected object is taken as an outer surface/outer side, the surface of the insulating housing 112 of the scanner facing the detected object is taken as an inner surface/inner side, that is, the detected object does not contact with the outer side, the insulating housing 112 surrounds the cavity 110, one or a plurality of through holes are formed at the top of the insulating housing 112, and the camera of the monitoring device 130 arranged at the outer side of the insulating housing 112 is exposed from the through holes. For example, the exposed surface of the camera of the monitoring device 130 may be smoothly tangent or transition to the interior surface of the scanner dielectric housing 112. Alternatively, the exposed surface of the camera of the monitoring device 130 protrudes slightly from the inner surface of the scanner dielectric housing 112. By arranging the monitoring device 130 outside the insulating housing, the monitoring device 130 does not occupy the scanning space of the bore 110, thereby reducing or even avoiding the influence of the monitoring device 130 on the scanning process and improving the comfort of the scanned object.

The monitoring device 130 may also be disposed on the surface of the scanner dielectric housing 112. In one embodiment, the monitoring device 130 may be configured as follows: the surface of the scanner insulating housing 112 facing the object to be detected is an inner surface/inner side, the object to be detected can contact the inner side, and the distance between the lower end of the camera 132 and the inner side of the scanner insulating housing 112 is less than 10 cm.

Referring to fig. 3, in one embodiment, the monitoring device 130 includes a protective case 1300. The protective case 1300 has an arc-shaped main body portion 1302, and the camera 132 is fixed to the main body portion 1302. The main body 1302 may have an arc-shaped strip structure. Through setting up the main part into the arc structure, it can match with the shape of insulating housing 112's internal surface to be convenient for with the reliable insulating housing 112 that is fixed in of supervisory equipment, prevent that scanner device 100 from shaking factors such as during operation, causing the camera excessively to rock, lead to the inaccurate problem of testing result to produce. Further, the protective case 1300 includes an upper case 1304 and a lower case 1306 assembled together, the lower case 1306 is provided with an opening 1308 facing downward, the camera 132 is exposed from the opening 1308, and as shown in fig. 3, a plurality of cameras 132 are arranged on the surface of the main body 1302 in a protruding manner at intervals. By designing the protective case as an upper and a lower case that can be assembled, maintenance of the monitoring device can be facilitated. The lower shell is provided with a downward opening, and the camera is exposed from the opening, so that the visual field of the camera can be increased, and more motion information of the scanned part can be detected.

Referring to fig. 4, in one embodiment, the camera 132 (or the monitoring device 130) includes a photosensor 142, an amplifier 144, and an analog-to-digital converter 146. The photoelectric sensor 142, the amplifier 144 and the analog-to-digital converter 146 are electrically connected in sequence. The photoelectric converter 148 can be used to collect the position information of the object to be marked on the scanned object, and convert the optical signal into an electrical signal to the amplifier 144. The amplifier 144 amplifies the electrical signal and transmits the amplified signal to the analog-to-digital converter 146. The analog-to-digital converter 146 may convert an analog signal to a digital signal. The digital signal may be finally input to a processor for image processing to determine the body condition of the scanned subject.

Referring to fig. 5, in one embodiment, the camera 132 (or the monitoring device 130) includes a photosensor 142, an amplifier 144, and a photoelectric converter 148. The photosensor 142, the amplifier 144, and the photoelectric converter 148 may be electrically connected. The photoelectric sensor 142 can be used to acquire the position information of the marked object on the surface of the scanned object. The amplifier 144 amplifies the optical signal and transmits the amplified signal to the optical-to-electrical converter 148. The photoelectric converter 148 converts the optical signal into an electrical signal, and transmits the electrical signal to a processor for image processing, so as to obtain an image of the marked object on the surface of the scanned object. And the motion state of the scanned object can be obtained by comparing the images of the marked object obtained at different moments. The photoelectric converter 148 may transmit the signal to the processor through a wireless transmission mode such as a bluetooth module or a WIFI module, or a wired transmission mode such as an optical fiber or a cable. In some embodiments, the optical-to-electrical converter 148 and the processor communicate wirelessly, which simplifies the wiring process and avoids cable interference with the scanning signals during operation of the scanner device 100.

In one embodiment, the scanner device 100 is a magnetic resonance scanner or a computed tomography scanner. An electromagnetic shielding layer is disposed outside the camera 132 or the monitoring device 130. The electromagnetic shielding layer may cover the surface of the camera 132 other than the image capturing window. The electromagnetic shielding layer may be made of metal such as copper, aluminum, steel, silver, etc. The electromagnetic shielding layer can prevent the camera 132 and the magnetic resonance scanner or the computed tomography scanner from interfering with each other. In some embodiments, the outer surface of the camera 132 may be painted with a shielding conductive paint to reduce or even completely eliminate interference of the main and rf fields with the camera 132. The shielding conductive paint may be, for example, a conductive paint added with silver metal powder, a conductive paint added with copper metal powder, a conductive paint added with nickel powder, or the like.

In one embodiment, the protective case 1300 further includes a tail 134 extending from the body 1302 in the Z-direction. The tail 134 includes a signal line 136 therein, and the signal line 136 is electrically connected to the camera 132. The signal line 136 is a metal wire (wire) or an optical fiber. The tail portion 134 may be an end of the body portion 1302 extending in the Z-direction. The main body portion 1302 may be a hollow structure. The signal line 136 may be connected to the camera 132 inside the main body 1302. The signal line 136 outputs information collected by the camera 132 to the outside. When the signal line 136 is a metal line, it may be made of aluminum, copper, or the like. In some embodiments, the signal line 136 is an optical fiber, which can reduce the interference of the magnetic field and the radio frequency field to the signal transmission on the one hand, and can increase the signal transmission rate on the other hand.

The embodiment of the application also provides a medical imaging system 10. The medical imaging system 10 includes a scanner device 100, a scanning bed 120 and a monitoring device 130. The scanner device 100 is used to acquire imaging signals of a scanned object. The scanner device 100 has a bore 110 for receiving a scanned object. The bore 110 has a geometric center, and defines an X-direction, a Y-direction, and a Z-direction for an origin based on the geometric center. The X-direction, the Y-direction, and the Z-direction are orthogonal to each other, and the bore 110 extends along the Z-direction. The scanning bed 120 includes a bed plate 122 and a support table 124. The support table 124 is used for supporting the bed plate 122. The bed 122 is used for bearing the scanned object. And the couch 122 is movable into the bore 110 of the scanner. The monitoring device 130 is used to obtain image information of the scanned object. The monitoring device 130 is connected to the scanner device 100. The monitoring device 130 includes a plurality of cameras 132. And at least two of the plurality of cameras 132 are symmetrically arranged on both sides of the YZ reference plane or a first plane parallel to the YZ reference plane. And the bore 110 is divided into three sub-bores 114 along the Z-direction by a third plane and a fourth plane parallel to the XY-reference plane. The monitoring device 130 is located in a sub-bore 114 at a central location of the three sub-bores 114, and the axial lengths of the three sub-bores 114 may be set to be the same or the axial length of the central sub-bore 114 may be set to be greater than the axial length of the two terminal bores 114. Of course, it is understood that the number of the sub-bore 114 that the bore 110 can be divided into is not particularly limited in the embodiment of the present application, for example, the number of the sub-bore 114 can be further divided into 4 or more according to the number of bed bits required for scanning, as long as it is ensured that the monitoring device 130 is disposed in the imaging field range formed by the scanner device, so as to ensure that the monitoring device 130 monitors the motion state information of the scanned object at any time.

In this embodiment, the scanner device 100 may be a magnetic resonance scanner or a computed tomography scanner. After the scanner device 100 collects the imaging signal of the scanned object, the imaging signal may be sent to a processor for processing, so as to analyze the condition of the scanned object. The bore 110 may be a cylindrical structure. The several centers may be the midpoints of the central symmetry axes of the cylindrical structure. The bore 110 extends in the Z-direction, i.e. the direction of extension of the central symmetry axis of the cylindrical structure. The X direction, the Y direction, and the Z direction may form a rectangular coordinate system. The Y direction may be a vertical direction. The X direction may be a horizontal direction. The bed plate 122 is horizontally disposed on the surface of the support table 124. The bottom of the support table 124 may be provided with pulleys. The support 124 is pushed by the pulleys to facilitate the movement of the scanned object carried by the couch plate 122 into and out of the bore 110. The monitoring device 130 is connected to the scanner device 100, i.e. the monitoring device 130 can be fixed to the scanner device 100 as required. To facilitate monitoring of the position and status of the scanned object, the monitoring device 130 may be disposed in the bore 110. The monitoring device 130 comprises an even number of cameras 132, i.e. the monitoring device 130 comprises at least two of the cameras 132. The number of the cameras 132 may be 4 or 8. The even number of cameras 132 are arranged on both sides of the YZ reference plane or a first plane parallel to the YZ reference plane, that is, the even number of cameras 132 are arranged on both sides of a vertical plane passing through the central symmetry axis or both sides of a plane parallel to the vertical plane. The even number of cameras 132 may be arranged at equal intervals on both sides of the YZ reference plane or a first plane parallel to the YZ reference plane on average. Therefore, the position of the camera 132 in the bore 110 is more uniform, and a larger area can be covered, which facilitates the omnidirectional monitoring of the scanned object.

The bore 110 is divided into three sub-bores 114 of the same length along the Z direction by a third plane and a fourth plane parallel to the XY reference plane. I.e. the third plane, the fourth plane, bisects the cavity 110 into three of the sub-cavities 114 of equal length. And the three sub-bores 114 are connected in series. The monitoring device 130 is located within a sub-bore 114 at a central location of the three sub-bores 114. Therefore, the monitoring apparatus 130 can cover a relatively large effective scanning area, facilitating multi-angle monitoring of the scanned object. It should be noted that the center of the bore 110 is usually the center of the imaging field of view, the magnetic field uniformity at this position is the best, and the imaging effect is the best, so that before the actual scanning, the target portion of the scanned object usually needs to be moved to the center of the bore 110, and this position is located in the sub-bore 114 at the middle position. Taking the target portion as the head portion as an example, the head portion of the scanned object is located within the central position range of the bore 110. Correspondingly, the monitoring device 130 may be disposed in the sub-bore 114 at the middle position as shown in fig. 2a, which is beneficial to accurately obtain the motion state of the scanned object, and prevent the generation of wrong motion monitoring information due to an excessively large inclination angle between the monitoring device 130 and the marker.

In an embodiment, one or both of the sub-cavities 114 located at both sides of the three sub-cavities 114 may be provided with the monitoring device 130. Taking the example of scanning the neck of the subject, the neck of the scanned object is located within the central position of the bore 110, i.e. the neck is located in the middle sub-bore 114, and the head may extend beyond the middle sub-bore 114. As shown in fig. 2b, the monitoring device 130 may be disposed on one of the sub-bores 114 on both sides (front and rear positions) considering that the head motion of the scanned object will move the neck. On one hand, the monitoring device 130 is not positioned in the center of the magnetic field, and the performance requirement on magnetic shielding is reduced; on the other hand, the interference of the head movement with the imaging of the neck can be prevented. In yet another embodiment, there may be two positions of head first or foot first when scanning the subject, and as shown in fig. 2c, the monitoring device 130 may be disposed in one or both of the sub-cavities on both sides. The monitoring device 130 may be selectively activated during use depending on the patient's scanning position.

In one embodiment, the scanner device includes an insulating housing 112 that circumferentially surrounds the bore 110. The monitoring device 130 is secured to the insulating housing 112 and is disposed adjacent to a top of the bore 110. The insulative housing 112 surrounds the bore 110. The insulating housing 112 may be made of an insulating material such as polyester. The monitoring device 130 may be a component that includes the camera 132. The monitoring device 130 may be disposed on top of the bore 110 and may thus have a larger image capture field of view.

In one embodiment, the monitoring device 130 includes a protective case 1300. The protective case 1300 has an arc-shaped main body portion 1302 and a tail portion 134 extending from the main body portion 1302 in the Z direction, and the camera 132 is fixed to the main body portion 1302 of the protective case 1300. The main body 1302 may have an arc-shaped strip structure. The plurality of cameras 132 may be disposed at intervals on the surface of the main body 1302.

In one embodiment, the tail 134 includes a signal line 136 or wireless transmitter therein. The signal line 136 or the wireless transmitter is connected to the camera 132. The signal line 136 may transmit information collected by the camera 132 to a processor or the like via the signal line 136 or the wireless transmitter for image processing. The wireless transmitter can be a Bluetooth module or a wifi module.

In one embodiment, the protective case 1300 is attached to the top of the inner wall of the insulating housing 112. That is, the protective case 1300 is located at the position where the inner wall of the insulating housing 112 is highest in the vertical direction, so that the monitoring apparatus 130 can have a relatively wide monitoring view.

In one embodiment, the tail 134 of the protective shell 1300 extends to the end opening of the bore 110. The protective case 1300 covers a large area inside the insulating case 112. The cameras 132 may be spaced apart within the insulated housing 112. The area covered by the field of view of the camera 132 can be increased.

In one embodiment, the insulating housing 112 is provided with a through hole in communication with the bore 110. The end of the tail 134 of the protective case 1300 is inserted into the through hole of the insulating case 112. The shape of the perforations may be adapted to the shape of the end of the tail 134 of the sheath. The end of the tail 134 of the protective case 1300 is inserted into the through hole of the insulating case 112 to fix the protective case 1300.

In one embodiment, the protective case 1300 is fixed to the insulating case 112 by a fixing screw 141. The protective case 1300 also extends out of the power line 138 to be connected with a power source.

In one embodiment, a circuit board is disposed within the insulative housing 112. The camera 132 is disposed on the circuit board. For example, a plurality of circuit board holes may be formed in the circuit board at intervals, one or more pins may be led out from the camera 132, and the pins may be soldered to the circuit board holes, so that the camera 132 may be connected to the circuit of the circuit board and the signal line 136. For another example, one or more pins may be disposed on the circuit board at intervals, and the pins and the camera 132 are connected by soldering, so that the camera 132 can be connected with the circuit of the circuit board and the signal line 136. The camera 132 transmits the collected information to the outside through the circuit board and the signal line 136.

In one embodiment, the camera 132 includes a photosensor 142, an amplifier 144, and an analog-to-digital converter 146, the photosensor 142, the amplifier 144, and the analog-to-digital converter 146 being arranged on the circuit board. The photoelectric sensor 142, the amplifier 144 and the analog-to-digital converter 146 are electrically connected in sequence. The photoelectric converter 148 can be used to collect the position information of the object to be marked on the scanned object, and convert the optical signal into an electrical signal to the amplifier 144. The amplifier 144 amplifies the electrical signal and transmits the amplified signal to the analog-to-digital converter 146. The analog-to-digital converter 146 may convert an analog signal to a digital signal. The digital signal may be finally input to a processor for image processing to determine the body condition of the scanned subject. The arrangement of the photoelectric sensor 142, the amplifier 144 and the analog-to-digital converter 146 on the circuit board can improve the integration of the monitoring device 130, and facilitate the detachment and installation.

In one embodiment, the camera 132 includes a photosensor 142, an amplifier 144, and a photoelectric converter 148. The photosensor 142, the amplifier 144, and the photoelectric converter 148 are disposed on the circuit board to increase the integration of the monitoring apparatus 130. Is convenient to be disassembled and assembled. The photosensor 142, the amplifier 144, and the photoelectric converter 148 may be wirelessly connected. The photoelectric sensor 142 can be used to acquire the position information of the marked object on the scanned object. The amplifier 144 amplifies the optical signal and transmits the amplified signal to the optical-to-electrical converter 148. The photoelectric converter 148 converts the optical signal into an electrical signal, and transmits the electrical signal to a processor for image processing, so as to determine the body state of the scanned object. Wireless transmission among the photosensor 142, the amplifier 144, and the photoelectric converter 148 may be performed through a bluetooth module or a WIFI module, so that a wiring process may be simplified, and interference of a cable with a scanning signal may be avoided when the scanner device 100 operates.

In one embodiment, the circuit board is a T-shaped structure. The circuit board comprises an extension part in the X direction and an extension part in the Z direction. The photosensor 142 is disposed in the extension of the X direction. The extension in the X direction and the extension in the Z direction constitute the T-shaped structure. The distal end of the Z-direction extension is arranged with a conductor (metal terminal) or an optical fiber interface. The conductor (metal terminal) or the optical fiber interface can be connected with an external processor or other equipment through a signal transmission line so as to transmit the information collected by the camera 132. The metal terminal is a conducting strip and can be welded with the metal conductor in the signal wire. The fiber optic interface is connectable to an optical fiber.

The embodiment of the application also provides a magnetic resonance imaging device. The magnetic resonance imaging apparatus comprises a scanner apparatus, a scanning bed 120 and at least two cameras 152. The scanner device has a bore 110 as an imaging volume for magnetic resonance images. The scanning bed 120 has a top plate. The object to be detected placed on the top plate moves into the bore 110 by moving the top plate. Magnetic resonance signals are collected from the subject. The at least two cameras 152 are disposed on top of the inner wall of the bore 110. The two cameras 152 are symmetrically distributed about the central axis of the bore 110 and thus have a larger image capture field of view.

The bore 110 may be a cylindrical structure. The scan bed 120 may be disposed within the bore 110. The top of the scanning bed 120 may be provided with the top plate. The top plate may be used to lay down the detected object. The length and width of the top plate may be set according to the size of the detected object. The top plate can slide relative to the scanning bed 120. I.e. the detected object can be made to enter the bore 110 by sliding the top plate. After the subject enters the bore 110, the scanner device may collect magnetic resonance signals from the subject.

In one embodiment, the scanner device further comprises at least two positioning marks. When the detected object is detected, the at least two positioning marks are arranged at intervals inside the cavity 110, for example, on two sides of the nasal ala of the scanned object. At least one of the cameras 152 can simultaneously acquire optical signals of two positioning marks to acquire electrical signals. The position of the detected object can be determined according to the positioning mark. The camera 152 can determine the position of the detected object by acquiring the optical signal of the positioning mark, so as to monitor the position state of the detected object.

In one embodiment, the magnetic resonance imaging apparatus further comprises a display. The display is disposed outside the bore 110 or on an outer surface of the scanner device. The display is capable of simultaneously displaying the captured images of both cameras 152.

Referring to fig. 6, in an embodiment, the monitoring device 130 of the magnetic resonance imaging apparatus further includes a T-shaped support frame 150, and the two cameras 152 are symmetrically distributed on two wings of the T-shaped support frame 150. The T-shaped support frame 150 is composed of a horizontal frame and a vertical frame. The cameras 152 are located at two ends of the cross frame of the T-shaped support frame 150, and are symmetrical with respect to the straight line where the vertical frame is located.

In one embodiment, the top of the inner wall of the bore 110 is recessed. The T-shaped support 150 is removably received in the recess. And the surface of the T-shaped support bracket 150 after installation is tangent to the surface of the inner wall of the bore 110 or is slightly higher than the surface of the inner wall of the bore 110.

In one embodiment, a plurality of a/D converters and digital signal processing chips are disposed in the T-shaped supporting frame 150. And the input of each of the a/D converters is connected to one of the cameras 152. The a/D converter is used to analog-to-digital convert the electrical signal captured by the camera 152 into a digital image signal. And the output end of the A/D converter is connected with the digital signal processing chip. The digital signal processing chip is used for carrying out optimization processing such as image compression, noise reduction, channel combination and the like on the data image signals.

In one embodiment, an I/O interface is provided at the end of the T-shaped support 150 and can be plugged into the scanner device to allow electrical communication. In one aspect, the scanner device can provide a driving power supply for the electronic components of the T-shaped support 150, namely: the T-shaped support 150 multiplexes the power supply of the scanner device, reducing circuit wiring and additional power supply settings. On the other hand, the controller of the scanner device 100 can control the electronic components of the T-shaped support 150 at the same time, and signals received by the electronic components of the T-shaped support 150 can also be fed back to the scanner apparatus.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A medical imaging system, comprising:

2. The medical imaging system of claim 1, wherein the scanner device includes an insulative housing circumferentially surrounding the bore, the monitoring device being secured to the insulative housing and disposed adjacent a top of the bore.

3. The medical imaging system of claim 2, wherein the monitoring device includes a protective case having an arcuate body portion, the camera being secured by the body portion.

4. The medical imaging system of claim 2, wherein the camera comprises a photosensor, an amplifier, and an analog-to-digital converter electrically connected therebetween;

5. A medical imaging system according to claim 2, wherein at least two cameras of the even number of cameras are arranged on both sides of a YZ reference plane, and a line connecting the two cameras is perpendicular to the YZ reference plane.

6. The medical imaging system of claim 1, wherein the scanner device is a magnetic resonance scanner or a computed tomography scanner, and the monitoring device or the camera is externally provided with an electromagnetic shielding layer.

7. The medical imaging system of claim 3, wherein the protective shell further comprises a tail portion extending from the body portion in the Z direction, the tail portion including a signal line therein and electrically connected to the camera head, the signal line including a metal conductor or an optical fiber.

8. A medical imaging system, comprising:

9. The medical imaging system of claim 8, wherein the scanner device includes an insulative housing circumferentially surrounding the bore, the monitoring device being secured to the insulative housing and disposed adjacent a top of the bore.

10. The medical imaging system of claim 9, wherein the monitoring device includes a protective case having an arcuate body portion and a tail portion extending from the body portion in the Z-direction, the camera being secured by the body portion.

11. The medical imaging system of claim 10, wherein the tail includes a signal wire or a wireless transmitter therein, the signal wire or the wireless transmitter being connected to the camera.

12. The medical imaging system of claim 11, wherein the protective shell is affixed to the top of the inner wall of the insulating shell.

13. The medical imaging system of claim 12, wherein the tail of the protective shell extends to the distal opening of the bore; or the tail end of the tail part of the protective shell is inserted into a through hole in the insulating shell, and the through hole is communicated with the cavity.

14. The medical imaging system of claim 8, wherein the scanner device comprises an insulating housing surrounding the bore, the insulating housing having one or more through holes at a top thereof, and the camera disposed outside the insulating housing of the monitoring device being exposed from the through holes.

15. The medical imaging system of claim 10, wherein a circuit board is disposed within the insulative housing, the camera being disposed on the circuit board.

16. The medical imaging system of claim 15, wherein the camera comprises a photosensor, an amplifier, and an analog-to-digital converter, the photosensor, the amplifier, and the analog-to-digital converter being disposed on the circuit board;

17. The medical imaging system of claim 16, wherein the protective case comprises an upper case and a lower case assembled together, the lower case having a downwardly facing opening through which the camera is exposed.

18. The medical imaging system of claim 16 or 17, wherein the circuit board is a T-shaped structure, and includes an extension in the X direction and an extension in the Z direction, the photoelectric sensor is disposed in the extension in the X direction, and a terminal of the extension in the Z direction is disposed with a metal terminal or an optical fiber interface.

19. A medical imaging system according to claim 8 or 17, wherein the cameras are equally spaced in a centrally located sub-bore.

20. A medical imaging system according to claim 9 or 17, wherein a lower end of the camera head is at a distance of less than 10cm from the scanner insulating housing.