CN108095752B - PET imaging apparatus - Google Patents
PET imaging apparatus Download PDFInfo
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- CN108095752B CN108095752B CN201711392668.5A CN201711392668A CN108095752B CN 108095752 B CN108095752 B CN 108095752B CN 201711392668 A CN201711392668 A CN 201711392668A CN 108095752 B CN108095752 B CN 108095752B
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- 238000012879 PET imaging Methods 0.000 title claims abstract description 52
- 238000001514 detection method Methods 0.000 claims abstract description 43
- 230000008859 change Effects 0.000 claims abstract description 14
- 238000012636 positron electron tomography Methods 0.000 claims abstract 15
- 230000007246 mechanism Effects 0.000 claims description 74
- 230000009471 action Effects 0.000 claims description 24
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005855 radiation Effects 0.000 abstract description 4
- 238000002600 positron emission tomography Methods 0.000 description 55
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000002059 diagnostic imaging Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000009206 nuclear medicine Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/037—Emission tomography
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
- A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/54—Control of apparatus or devices for radiation diagnosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/58—Testing, adjusting or calibrating thereof
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Abstract
The invention relates to a PET imaging device for mounting PET detection rings, each PET detection ring comprising a first body and a second body. The PET imaging apparatus includes a PET gantry assembly and a first rail. Each PET rack assembly comprises a first rack and a second rack, and the first rack and the second rack can slide along the extension direction of the first guide rail respectively, so that the first rack and the second rack can be close to or far away from each other along the extension direction of the first guide rail, and the first body and the second body can be close to or far away from each other along the extension direction of the first guide rail. Through sliding first frame and second frame along the extending direction of first guide rail to can change first body and the second body of reserve undamaged, thereby can save time, have the technological effect that reduces the person's of waiting to detect received radiation dose.
Description
Technical Field
The present invention relates to medical imaging devices, and in particular to PET imaging devices.
Background
In medical imaging equipment, positron Emission Tomography (PET) is a relatively advanced clinical examination imaging technology in the field of nuclear medicine. Before PET imaging is carried out, an isotope marker (developer) with positron emission is injected into a body of a person to be detected, then human body scanning is carried out, if a detector module is damaged in the scanning process, scanning is stopped in a conventional mode, the person to be detected is moved out of a device room, and scanning is carried out after PET imaging equipment is repaired. Since the maintenance of the equipment requires a certain amount of time, it may be necessary to re-inject the isotope label with positron emission into the subject before re-scanning, which may result in an increase in the dose of radiation to be administered to the subject.
Disclosure of Invention
Based on this, it is necessary to provide an improved PET imaging apparatus for solving the problem that the conventional PET imaging apparatus causes the increase of the radiation dose of the subject to be detected when rescanning after maintenance.
A PET imaging device for mounting a PET detection ring, the PET detection ring including a first body and a second body, the PET imaging device including at least one PET gantry assembly, each PET gantry assembly for supporting one of the PET detection rings such that the PET detection ring forms a scanning channel; the at least one PET rack assembly is arranged along the axial direction of the scanning passage; each PET rack assembly comprises a first rack and a second rack, wherein the first rack is used for supporting the first body, and the second rack is used for supporting the second body; the first guide rails correspond to the PET rack assemblies one by one, and the extending direction of each first guide rail is vertical to the axis of the scanning channel; the first frame and the second frame are respectively connected with the first guide rail in a sliding mode, so that the first frame and the second frame can move close to or away from each other along the extending direction of the first guide rail.
When above-mentioned PET imaging device's PET detected ring and damaged, through sliding first frame and second frame along the extending direction of first guide rail for first body and second body can in time break away from first guide rail, thereby can change first body and the second body of reserve not damaged. Drive the first body of reserve non-damage and the extending direction of second body along first guide rail through PET frame subassembly and remove, so that first body of reserve non-damage and second body move the former operating position who surveys the ring to the PET that damages, thereby ring can be surveyed to the new PET that the ring can replace the PET that damages of merging to first body of reserve non-damage and second body, so that PET imaging device can continue to scan, thereby can save time, the technological effect who reduces the person who treats the detection by radiation dose has.
In one embodiment, the PET imaging device further comprises a second guide rail and a plurality of first steering frames, wherein the extension direction of the second guide rail is different from the extension direction of the first guide rail; the first bogie is respectively connected with one end of the first guide rail and the second guide rail, so that the first frame can be switched between the first guide rail and the second guide rail through the action of the first bogie; and/or the PET imaging device further comprises a third guide rail and a plurality of second bogies, wherein the extension direction of the third guide rail is different from the extension direction of the first guide rail; the second bogie is connected to the other end of the first guide rail and the third guide rail, respectively, so that the second frame can be switched between the first guide rail and the third guide rail by the action of the second bogie.
In one embodiment, the first steering frame corresponds to the first guide rail in a one-to-one manner, and the first steering frame is rotatably connected to the second guide rail, so that the first frame can be switched between the first guide rail and the second guide rail through the steering action of the first steering frame; and/or the second bogie corresponds to the first guide rail in a one-to-one mode, and is connected to the third guide rail in a rotating mode, so that the second rack can be switched between the first guide rail and the third guide rail through the steering action of the second bogie.
In one embodiment, the first bogie comprises a first turntable and a first steering guide rail, and the first steering guide rail is fixedly connected with the first turntable; the extending direction of the first steering guide rail can be switched by rotating the first rotating disc, so that the first steering guide rail is butted with the first guide rail or the second guide rail; the second bogie comprises a second turntable and a second steering guide rail, and the second steering guide rail is fixedly connected with the second turntable; the extending direction of the second steering rail can be switched by rotating the second rotating disk so that the second steering rail is butted against the first rail or the third rail.
In one embodiment, the first bogie is slidably connected to the second guide rail, so that the first bogie can slide to one end of any one of the first guide rails, so that any one of the first frames can be switched between the corresponding first guide rail and the second guide rail through the steering action of the first bogie; and/or the second bogie is connected with the third guide rail in a sliding and rotating mode, so that the second bogie can slide to one end of any one first guide rail, and any one second rack can be switched between the corresponding first guide rail and the corresponding third guide rail through the steering action of the second bogie.
In one embodiment, the PET imaging device further comprises a first driving mechanism, wherein the first driving mechanism is connected with the first machine frame, so that the first driving mechanism drives the first machine frame to move along the extending direction of the first guide rail; and the second driving mechanism is connected with the second rack, so that the second driving mechanism drives the second rack to move along the extending direction of the first guide rail.
In one embodiment, the first driving mechanism comprises a first electromagnetic coil and a first magnetic slide block, and the first magnetic slide block is fixedly connected with the first frame; the first magnetic slide block drives the first machine frame to move along the extension direction of the first guide rail through magnetic force generated by electrifying the first electromagnetic coil; and/or the second driving mechanism comprises a second electromagnetic coil and a second magnetic sliding block, and the second magnetic sliding block is fixedly connected with the second rack; the second magnetic slide block drives the second rack to move along the extending direction of the first guide rail through magnetic force generated by electrifying the second electromagnetic coil.
In one embodiment, the PET imaging device further comprises a control mechanism, wherein the control mechanism is electrically connected with the first driving mechanism and is used for controlling the first driving mechanism to act; the control mechanism is electrically connected with the second driving mechanism and is used for controlling the second driving mechanism to act.
In one embodiment, the control mechanism is capable of changing the direction of current to the first or second solenoid coil so as to change the direction of the magnetic force generated by the first or second solenoid coil, respectively.
In one embodiment, the control mechanism is capable of varying the magnitude of the current to the first or second electromagnetic coil so as to vary the magnitude of the magnetic force generated by the first or second electromagnetic coil, respectively.
In one embodiment, the PET imaging device further comprises an operating button, wherein the operating button is electrically connected with the control mechanism; the operating button is arranged on the first rack and/or the second rack, and the control mechanism can control the first driving mechanism and/or the second driving mechanism according to a trigger signal of the operating button.
Drawings
FIG. 1 is a schematic structural diagram of a PET imaging apparatus according to an embodiment;
FIG. 2 is a schematic illustration of the PET imaging device of FIG. 1 with the first bogie docked with the second rail;
FIG. 3 is a schematic view of a first bogie of the PET imaging apparatus of FIG. 1 docked with a first rail;
fig. 4 is a schematic view showing a connection relationship of a first guide rail, a first electromagnetic coil and a first magnetic slider of the PET imaging apparatus of fig. 1.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It should be noted that when a portion is referred to as being "secured to" another portion, it can be directly on the other portion or there can be an intervening portion. When a portion is said to be "connected" to another portion, it may be directly connected to the other portion or intervening portions may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a PET imaging device 100 of an embodiment is used to mount a PET detection ring 110. Each PET detection ring 110 includes a first body 111 and a second body 112. The PET imaging device 100 includes a PET gantry assembly 120 and a first rail 130. The number of PET detection rings 110 may be one or more. The PET detection rings 110 correspond to the PET gantry assemblies 120 one to one, and the PET gantry assemblies 120 correspond to the first guide rails 130 one to one. The PET gantry assembly 120 is used to support the PET detection ring 110 such that the PET detection ring 110 forms a scan channel. The PET gantry assembly 120 is arranged along the axial direction of the scanning passage, and the PET gantry assembly 120 is slidably coupled to the first guide rail 130. Each PET gantry assembly 120 includes a first gantry 121 and a second gantry 122, wherein the first gantry 121 is for supporting the first body 111, and the second gantry 122 is for supporting the second body 112. The extending direction of the first guide rail 130 is perpendicular to the axis of the scanning passage; the first frame 121 and the second frame 122 are slidably coupled to the first guide rail 130, respectively, so that the first frame 121 and the second frame 122 can approach or separate from each other along the extending direction of the first guide rail 130, and the first body 111 and the second body 112 can approach or separate from each other along the extending direction of the first guide rail 130.
The first body 111 is a part of the PET detection ring 110, and the second body 112 is a part of the PET detection ring 110, that is, the cross section of the first body 111 is a fan-shaped ring, and the cross section of the second body 112 is a fan-shaped ring. In the present embodiment, the central angle of the cross-section of the first body 111 is 180 °, and the central angle of the cross-section of the second body 112 is 180 °, that is, the first body 111 is a half PET detection ring 110, and the second body 112 is a half PET detection ring 110. In other embodiments, the central angle of the cross section of the first body 111 may also be 90 °, and the central angle of the cross section of the second body 112 may also be 270 °, that is, the first body 111 is a quarter of one PET detection ring 110, and the second body 112 may be three quarters of three PET detection rings 110. The ratio of the central angle of the cross section of the first body 111 to the central angle of the cross section of the second body 112 can be set according to the use requirement, and the embodiment is not particularly limited.
When the PET detection ring 110 of the PET imaging apparatus is damaged, the first body 111 and the second body 112 can be separated from the first guide rail 130 in time by sliding the first frame 121 and the second frame 122 in the extending direction of the first guide rail 130, so that the first body 111 and the second body 112 which are not damaged can be replaced. The first and second spare undamaged bodies 111 and 112 are driven by the PET gantry assembly 120 to move along the extending direction of the first guide rail 130, so that the first and second spare undamaged bodies 111 and 112 move to the original working position of the damaged PET detection ring 110, and the damaged PET detection ring 110 can be replaced by the new PET detection ring 110 formed by combining the first and second spare undamaged bodies 111 and 112, so that the PET imaging device can continue to scan. Without shutting down the PET imaging device or moving the subject out of the room of the PET imaging device. The PET imaging apparatus 100 can replace the damaged PET detection ring 110 with the spare undamaged PET detection ring 110 in time, thereby saving time, eliminating the need to inject the isotope markers into the patient, and reducing the dose of the patient.
Referring to fig. 1-3, in one embodiment, the PET imaging device 100 further includes a second rail 140 and a first bogie 150. The extending direction of the second guide rail 140 is different from the extending direction of the first guide rail 130, and the first bogie 150 is connected to one end of the first guide rail 130 and the second guide rail 140, respectively, so that the first frame 121 can be switched between the first guide rail 130 and the second guide rail 140 by the steering action of the first bogie 150, so that the first body 111 is switched between the first guide rail 130 and the second guide rail 140.
Specifically, the angle between the extending direction of the second rail 140 and the extending direction of the first rail 130 may be 90 °, 60 °, 30 °, or the like. The number of the first bogie 150 may be one or more. When the PET detection ring 110 is damaged, the first frame 121 slides to the first bogie 150 along the first guide rail 130, and then the first frame 121 is switched to the second guide rail 140 under the action of the first bogie 150, so that the first frame 121 can slide on the second guide rail 140, and further, the first frame 121 can drive the first body 111 of the damaged PET detection ring 110 to slide along the second guide rail 140, so that the first body 111 of the damaged PET detection ring 110 is separated from the PET imaging device 100.
Accordingly, the spare undamaged first body 111 can also slide along with the first frame 121 from the second guide rail 140 to the first bogie 150, and the first frame 121 is switched to the first guide rail 130 by the action of the first bogie 150, so that the first frame 121 can slide on the first guide rail 130, and the spare undamaged first body 111 can slide along with the first frame 121 to the working position of the first body 111.
The embodiment is convenient for the first body 111 to be switched between the first guide rail 130 and the second guide rail 140 along with the first frame 121 by arranging the first bogie 150 and the second guide rail 140, so that the damaged PET detection ring 110 is conveniently separated from the PET imaging device 100 in time, and the standby undamaged PET detection ring 110 is conveniently moved to the working position in time.
In one embodiment, the PET imaging device 100 further includes a third rail 160 and a second bogie 170. The third guide rail 160 extends in a direction different from the first guide rail 130, and the second bogie 170 is connected to the other end of the first guide rail 130 and the third guide rail 160, respectively, so that the second frame 122 can be switched between the first guide rail 130 and the third guide rail 160 by the steering action of the second bogie 170, so that the second body 112 is switched between the first guide rail 130 and the third guide rail 160.
Specifically, the angle between the extending direction of the third rail 160 and the extending direction of the first rail 130 may be 90 °, 60 °, 30 °, or the like. The number of the second bogie 170 may be one or more. When the PET detection ring 110 is damaged, the second rack 122 slides along the first guide rail 130 to the second bogie 170, and then the second rack 122 is switched to the third guide rail 160 under the action of the second bogie 170, so that the second rack 122 can slide on the third guide rail 160, and further, the second rack 122 can drive the second body 112 of the damaged PET detection ring 110 to slide along the third guide rail 160, so that the second body 112 of the damaged PET detection ring 110 is separated from the PET imaging device 100.
Accordingly, the spare undamaged second body 112 can slide with the second frame 122 from the third rail 160 to the second bogie 170, and the second frame 122 is switched to the first rail 130 by the action of the second bogie 170, so that the second frame 122 can slide on the first rail 130, and the spare undamaged second body 112 can slide with the second frame 122 to the working position of the second body 112.
This embodiment is through setting up second bogie 170 and third guide rail 160, and the second body 112 of being convenient for switches between first guide rail 130 and third guide rail 160 along with second frame 122 to the PET detection ring 110 that conveniently damages promptly breaks away from PET imaging device 100, and the PET detection ring 110 that is convenient for spare not damage promptly moves to operating position.
Referring to fig. 2 and 3, in one embodiment, the number of the first bogies 150 is plural, the first bogies 150 correspond to the first guide rails 130 one by one, and the first bogies 150 are rotatably connected to the second guide rails 140. Since each first guide rail 130 is connected to one corresponding first bogie 150, the first frame 121 on each first guide rail 130 can be switched between the first guide rail 130 and the second guide rail 140 by the steering action of the corresponding first bogie 150, so that the first body 111 can be conveniently switched between the first guide rail 130 and the second guide rail 140 along with the first frame 121.
Referring to fig. 2 and 3, in one embodiment, the number of the second bogies 170 is multiple, the second bogies 170 correspond to the first guide rails 130 one by one, and the second bogies 170 are rotatably connected to the third guide rails 160. Since each first guide rail 130 is connected to one corresponding second bogie 170, the second frame 122 on each first guide rail 130 can be switched between the first guide rail 130 and the third guide rail 160 by the steering action of the corresponding second bogie 170, so that the second frame 122 can be conveniently switched between the first guide rail 130 and the third guide rail 160 along with the second frame 122.
Referring to fig. 2 and 3, in one embodiment, the first bogie 150 includes a first turntable 151 and a first guide rail 152, and the first guide rail 152 is fixedly connected to the first turntable 151. The extending direction of the first guide rail 152 can be switched by rotating the first turntable 151 so that the first guide rail 152 is butted against the first guide rail 130 or the second guide rail 140.
The process of switching the first frame 121 from the first guide rail 130 to the second guide rail 140 is as follows: by rotating the first rotating disc 151 to make the first guide rail 152 abut against the first guide rail 130, the first frame 121 can slide from the first guide rail 130 to the first guide rail 152, and by rotating the first rotating disc 151 again to make the first guide rail 152 abut against the second guide rail 140, the first frame 121 can slide from the first guide rail 152 to the second guide rail 140. Since the first body 111 is supported by the first frame 121, the first body 111 can be switched from the first guide rail 130 to the second guide rail 140 with the first frame 121, thereby facilitating timely removal of the damaged first body 111.
Similarly, the process of switching the first frame 121 from the second rail 140 to the first rail 130 is as follows: by rotating the first rotating disc 151 to make the first transfer rail 152 abut against the second guide rail 140, the first frame 121 can slide from the second guide rail 140 to the first transfer rail 152, and by rotating the first rotating disc 151 again to make the first transfer rail 152 abut against the first guide rail 130, the first frame 121 can slide from the first transfer rail 152 to the first guide rail 130. Since the first frame 121 supports the first body 111, the first body 111 can be switched from the second rail 140 to the first rail 130 along with the first frame 121, thereby facilitating the replacement first body 111 to be moved to a working position in time.
Referring to fig. 2 and 3, in one embodiment, the second bogie 170 includes a second turntable 171 and a second steering rail 172, and the second steering rail 172 is fixedly connected to the second turntable 171; the extending direction of second diverting rail 172 can be switched by rotating second turntable 171 so that second diverting rail 172 is butted against first rail 130 or third rail 160.
The process of switching the second frame 122 from the first rail 130 to the third rail 160 is as follows: by rotating the second turntable 171 to make the second divert guide 172 abut against the first guide 130, the second frame 122 can slide from the first guide 130 to the second divert guide 172, and by rotating the second turntable 171 again to make the second divert guide 172 abut against the third guide 160, the second frame 122 can slide from the second divert guide 172 to the third guide 160. Since the second body 112 is supported by the second frame 122, the second body 112 can be switched from the first rail 130 to the third rail 160 with the second frame 122, thereby facilitating timely removal of the damaged second body 112.
Similarly, the process of switching the second frame 122 from the third rail 160 to the first rail 130 is as follows: by rotating the second turntable 171 to make the second turning rail 172 abut against the third rail 160, the second frame 122 can slide from the third rail 160 to the second turning rail 172, and by rotating the second turntable 171 again to make the second turning rail 172 abut against the first rail 130, the second frame 122 can slide from the second turning rail 172 to the first rail 130. Since the second frame 122 supports the second body 112, the second body 112 can be switched from the third rail 160 to the first rail 130 along with the second frame 122, thereby facilitating the replacement second body 112 to be moved to the working position of the second body 112 in time.
It will be appreciated that the first turntable 161 and the second turntable 171 each comprise a rotating structure, which may comprise a drive motor, upon which the first turntable 161 and the second turntable 171 are driven to rotate. When the first turntable 161 and the second turntable 171 are in a stationary state, the positioning of the first turning rail 162 and the second turning rail 172 is achieved, respectively. In one embodiment, the first turntable 171 and the second turntable 172 respectively further include a fixing structure for fixing the first turntable 171 and the second turntable 172 relative to a mounting surface (e.g., a ground surface), so as to enhance the stability of the first steering rail 162 and the second steering rail 172.
In one embodiment, the first bogie 150 may be further slidably connected to the second guide rail 140, such that the first bogie 150 can slide along the extending direction of the second guide rail 140, such that the first bogie 150 can slide to one end of any one of the first guide rails 130. Thus, the first bogie 150 can perform a steering action between any of the first guide rails 130 and the second guide rail 140. Any one of the first frames 121 can be switched between the corresponding first and second guide rails 130 and 140 by the steering action of the first bogie 150. By slidably coupling the first bogie 150 to the second guide rail 140, only one first bogie 150 needs to be provided to switch any one first frame 121 between the corresponding first guide rail 130 and second guide rail 140.
In one embodiment, the second bogie 170 may be further slidably connected to the third guide rail 160, such that the second bogie 170 can slide along the extending direction of the third guide rail 160, such that the second bogie 170 can slide to one end of any one of the first guide rails 130. Thus, the second bogie 170 may provide a steering effect between either of the first 130 and third 160 guide rails. Any one of the first frames 121 can be switched between the corresponding first and third guide rails 130 and 160 by the steering action of the second bogie 170. By slidably coupling the second bogie 170 to the third guide rail 160, only one second bogie 170 needs to be provided to switch any one of the second frames 122 between the corresponding first guide rail 130 and third guide rail 160.
In one embodiment, the PET imaging apparatus 100 includes a first driving mechanism (not shown) and a second driving mechanism (not shown), and the first driving mechanism is coupled to the first frame 121 such that the first driving mechanism drives the first frame 121 to move along the extending direction of the first guide rail 130, thereby facilitating the movement of the first body 111 in the extending direction of the first guide rail 130. The second driving mechanism is coupled to the second frame 122 such that the second driving mechanism drives the second frame 122 to move along the extending direction of the first guide rail 130, thereby facilitating to move the second body 112 in the extending direction of the first guide rail 130. Specifically, the first driving mechanism may be a motor, and the second driving mechanism may also be a motor.
Referring to fig. 4, in one embodiment, the first driving mechanism includes a first electromagnetic coil 180 and a first magnetic slider 190, and the first magnetic slider 190 is fixedly connected to the first frame 121; by energizing the first electromagnetic coil 180 to generate a magnetic force, the first magnetic slider 190 can move along the extending direction of the first guide rail 130, so that the first magnetic slider 190 drives the first frame 121 to slide along the extending direction of the first guide rail 130. As shown in fig. 4, in the present embodiment, the first electromagnetic coil 180 is a slot-shaped coil that is disposed in parallel with the first rail 130, and the slot of the slot-shaped coil extends in the same direction as the first rail 130. By providing the first electromagnetic coil 180 and the first magnetic slider 190, it is convenient to drive the first frame 121 to move along the extending direction of the first guide rail 130, thereby facilitating to move the first body 111 in the extending direction of the first guide rail 130. In other embodiments, first electromagnetic coil 180 may be disposed on first rail 130.
In one embodiment, the second driving mechanism includes a second electromagnetic coil (not shown) and a second magnetic slider (not shown), and the second magnetic slider is fixedly connected to the second frame 122; the second magnetic slider can move along the extending direction of the first guide rail 130 by energizing the second electromagnetic coil to generate a magnetic force, so that the second magnetic slider drives the second frame 122 to slide along the extending direction of the first guide rail 130. In this embodiment, the second electromagnetic coil may be a slot-shaped coil, which is arranged in parallel with the first rail 130, and the slot of the slot-shaped coil extends in the same direction as the first rail 130. By providing the second electromagnetic coil and the second magnetic slider, the second frame 122 is driven to move along the extending direction of the first guide rail 130, so that the second body 112 is moved along the extending direction of the first guide rail 130. In other embodiments, a second electromagnetic coil may be disposed on the first rail 130.
In one embodiment, the PET imaging apparatus 100 further comprises a control mechanism (not shown) electrically connected to the first driving mechanism, the control mechanism being configured to control the operation of the first driving mechanism; for example, in the present embodiment, the control mechanism may control the first magnetic coil 180 to be energized to generate a magnetic force, so that the first magnetic slider 190 moves along the extending direction of the first guide rail 130 due to the magnetic force, so that the first magnetic slider 190 drives the first frame 121 to slide along the extending direction of the first guide rail 130.
In one embodiment, the control mechanism is electrically connected with the second driving mechanism and is used for controlling the action of the second driving mechanism; for example, in this embodiment, the control mechanism may control the second magnetic coil to be energized to generate a magnetic force, so that the second magnetic slider moves along the extending direction of the first guide rail 130 due to the magnetic driving, so that the second magnetic slider drives the second frame 122 to slide along the extending direction of the first guide rail 130.
In one embodiment, the control mechanism can change the current direction of the first electromagnetic coil 180, and by changing the current direction of the first electromagnetic coil 180, the direction of the magnetic field generated by the first electromagnetic coil 180 can be changed, so as to change the direction of the magnetic force driving the first magnetic slider 190, so as to change the direction of the first magnetic slider 190 when moving along the extending direction of the first guide rail 130, so that the first magnetic slider 190 drives the first frame 121 to move toward or away from the second frame 122, thereby facilitating to change the moving direction of the first frame 121 on the first guide rail 130.
In one embodiment, the control mechanism can change the current direction of the second electromagnetic coil, and by changing the current direction of the second electromagnetic coil, the direction of the magnetic field generated by the second electromagnetic coil can be changed, so as to change the direction of the magnetic force driving the second magnetic slider, so as to change the direction of the second magnetic slider when moving along the extending direction of the first guide rail 130, so that the second magnetic slider drives the second frame 122 to move toward or away from the first frame 121, so as to change the moving direction of the second frame 122 on the first guide rail 130.
In one embodiment, the control mechanism is capable of varying the magnitude of the current to the first electromagnetic coil 180, and by varying the magnitude of the current to the first electromagnetic coil 180, the magnitude of the magnetic force generated by the first electromagnetic coil 180 may be varied. The magnetic force generated by the first electromagnetic coil 180 is the driving force of the first magnetic slider 190, and the moving speed of the first magnetic slider 190 can be adjusted by changing the magnitude of the magnetic force generated by the first electromagnetic coil 180, so that the moving speed of the first magnetic slider 190 driving the first frame 121 can be adjusted.
In one embodiment, the control mechanism is capable of changing the magnitude of the current to the second electromagnetic coil, and by changing the magnitude of the current to the second electromagnetic coil, the magnitude of the magnetic force generated by the second electromagnetic coil can be changed. The magnetic force generated by the second electromagnetic coil is the driving force of the second magnetic slider, and the moving speed of the second magnetic slider can be adjusted by changing the size of the magnetic force generated by the second electromagnetic coil, so that the moving speed of the second magnetic slider driving the second rack 122 can be adjusted.
In one embodiment, the PET imaging device 100 further comprises an operating button (not shown) electrically connected to the control mechanism. When the control mechanism is electrically connected with the first driving mechanism, the operating button is used for starting the control mechanism, so that the control mechanism controls the action of the first driving mechanism. Illustratively, by pressing the operation button, the control mechanism may control the first driving motor and the first frame 121 to move according to a trigger signal of the operation button, which has the technical effect of convenient operation. When the control mechanism is electrically connected with the second driving mechanism, the operating button is used for starting the control mechanism, so that the control mechanism controls the action of the second driving mechanism. For example, by pressing the operation button, the control mechanism may control the second driving motor and the second frame 122 to move according to the trigger signal of the operation button, which has the technical effect of convenient operation.
It can be understood that the number of the operation buttons corresponds to the number of the first rack 121 and the second rack 122, and as long as the corresponding operation buttons are operated, the control mechanism can control the movement of the first rack 121 or the second rack 122 according to the trigger signal of the operation buttons, which has the technical effect of convenient operation. It is understood that the operation buttons may be mechanical keys or touch keys. The operating button can be arranged on the PET machine frame assembly, and particularly, the operating button can be arranged on the first machine frame and also can be arranged on the second machine frame.
In other embodiments, the operation button may be disposed on a housing of the PET imaging apparatus 100, where the housing refers to a casing covering the PET detection ring 110 and the PET gantry assembly 120, and the casing defines an accommodating space for accommodating the person to be detected, and the operation button is disposed on an end surface or a side surface of the casing in the axial direction of the PET detection ring 110, or at another position (for example, on a patient bed or on a wall of a scanning room).
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure 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 invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. A PET imaging device for mounting a PET detection ring, the PET detection ring including a first body and a second body, the PET imaging device comprising:
a plurality of PET gantry assemblies, the number of PET detection rings being plural, each PET gantry assembly for supporting one of the PET detection rings such that the PET detection ring forms a scanning channel; the PET rack assemblies are arranged along the axial direction of the scanning passage; each PET rack assembly comprises a first rack and a second rack, wherein the first rack is used for supporting the first body, and the second rack is used for supporting the second body; and
the first guide rails correspond to the PET rack assemblies one by one, and the extending direction of each first guide rail is vertical to the axis of the scanning channel; the first rack and the second rack are respectively connected with the first guide rail in a sliding manner, so that the first rack and the second rack can approach or depart from each other along the extending direction of the first guide rail; the PET imaging device further comprises a second guide rail and a plurality of first steering frames, wherein the extension direction of the second guide rail is different from the extension direction of the first guide rail; the first steering frames correspond to the first guide rails one to one, the first steering frames are connected with one ends of the first guide rails, the first steering frames are rotatably connected to the second guide rails, each first steering frame comprises a first turntable and a first steering guide rail, and the first steering guide rails are fixedly connected with the first turntables; the extending direction of the first steering guide rail can be switched by rotating the first steering wheel, so that the first steering guide rail is butted against the first guide rail or the second guide rail, and the first frame can be switched between the first guide rail and the second guide rail through the steering action of the first steering frame; the PET imaging device further comprises a third guide rail and a plurality of second bogies, wherein the extension direction of the third guide rail is different from the extension direction of the first guide rail; the second bogie is respectively connected with the other end of the first guide rail and the third guide rail, so that the second frame can be switched between the first guide rail and the third guide rail through the action of the second bogie;
the width of the PET detection ring in a state that the first body and the second body are connected with each other is a splicing width, and the minimum distance between the second guide rail and the third guide rail is larger than the splicing width;
the first driving mechanism comprises a first electromagnetic coil and a first magnetic sliding block, and the first magnetic sliding block is fixedly connected with the first rack; the first magnetic slide block drives the first machine frame to move along the extending direction of the first guide rail through magnetic force generated by electrifying the first electromagnetic coil.
2. The PET imaging apparatus of claim 1, wherein the second bogie corresponds to the first rail one to one, and the second bogie is rotatably coupled to the third rail such that the second gantry can be switched between the first rail and the third rail by a steering action of the second bogie.
3. The PET imaging apparatus of claim 2,
the second bogie comprises a second turntable and a second steering guide rail, and the second steering guide rail is fixedly connected with the second turntable; the extending direction of the second steering rail can be switched by rotating the second rotating disk so that the second steering rail is butted against the first rail or the third rail.
4. The PET imaging apparatus of claim 1, wherein the second bogie is slidably and rotatably coupled to the third rail such that the second bogie is slidable to one end of any one of the first rails such that any one of the second frames can be switched between the corresponding first rail and the third rail by a steering action of the second bogie.
5. The PET imaging device of claim 1, further comprising:
and the second driving mechanism is connected with the second rack, so that the second driving mechanism drives the second rack to move along the extending direction of the first guide rail.
6. The PET imaging device according to claim 5,
the second driving mechanism comprises a second electromagnetic coil and a second magnetic sliding block, and the second magnetic sliding block is fixedly connected with the second rack; the second magnetic slide block drives the second rack to move along the extension direction of the first guide rail through magnetic force generated by electrifying the second electromagnetic coil.
7. The PET imaging apparatus according to claim 6, further comprising a control mechanism electrically connected with the first driving mechanism, the control mechanism being configured to control the first driving mechanism to act; the control mechanism is electrically connected with the second driving mechanism and is used for controlling the second driving mechanism to act.
8. The PET imaging device according to claim 7,
the control mechanism is capable of changing the direction of the current of the first or second electromagnetic coil so as to change the direction of the magnetic force generated by the first or second electromagnetic coil, respectively.
9. The PET imaging device according to claim 7,
the control mechanism can change the current of the first electromagnetic coil or the second electromagnetic coil so as to change the magnetic force generated by the first electromagnetic coil or the second electromagnetic coil respectively.
10. The PET imaging device of claim 7 further comprising an operating button electrically connected with the control mechanism; the operating button is arranged on the first rack and/or the second rack, and the control mechanism can control the first driving mechanism and/or the second driving mechanism according to a trigger signal of the operating button.
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| CN201711392668.5A CN108095752B (en) | 2017-12-21 | 2017-12-21 | PET imaging apparatus |
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