CN210903068U

CN210903068U - PET detection equipment

Info

Publication number: CN210903068U
Application number: CN201921458834.1U
Authority: CN
Inventors: 张弛
Original assignee: Shanghai Pengmo Medical Technology Co ltd
Current assignee: Shanghai Pengmo Medical Technology Co ltd
Priority date: 2019-08-27
Filing date: 2019-09-02
Publication date: 2020-07-03
Anticipated expiration: 2029-09-02

Abstract

The utility model relates to the field of medical equipment, a PET check out test set is disclosed. The PET detection apparatus includes: a base; the detection assembly is connected with the base and is at least arranged to rotate and be positioned relative to the base and move and be positioned longitudinally relative to the base, wherein the detection assembly comprises a first detection plate and a second detection plate which are arranged oppositely and in parallel, either one of the first detection plate and the second detection plate comprises a detection layer, a signal reading layer and a circuit board layer which are sequentially arranged along the direction away from the other one, the detection layer comprises a plurality of detection units arranged in an array, each detection unit comprises a plurality of scintillation crystals, and the signal reading layer comprises a silicon photomultiplier; and a data processing device electrically connected with the circuit board. Wherein the first detection plate and the second detection plate are arranged to be movable in a direction towards and away from each other and positioned such that the spacing therebetween is adjustable. The PET detection equipment is rapid and accurate in detection and flexible in operation.

Description

PET detection equipment

Technical Field

The utility model belongs to the medical equipment field, concretely relates to PET check out test set.

Background

Pet (positron Emission tomography), is an advanced clinical examination imaging technique in the field of nuclear medicine, and is one of the most advanced large-scale medical diagnosis imaging techniques recognized in the medical field at present. PET is a non-invasive nuclear medicine imaging method, and its principle is that a bioactive substance labeled with a radionuclide (e.g., a tracer drug such as fluorodeoxyglucose) participates in the physiological metabolism of an organism, and the metabolism and three-dimensional distribution of the bioactive substance are indirectly observed based on the measurement of the distribution of the radionuclide in the organism. Currently, PET technology is widely used in clinical examinations, including examinations for cancer, brain diseases, and heart diseases.

The PET detection device mainly comprises a detector, an electronic system and a reconstruction algorithm module. The detector detects radioactive signals emitted by a human body, and after the radioactive signals are processed by the electronic system, the acquired scanning data are subjected to image reconstruction to obtain a human body tomography image, so that the specific coordinate position, morphological structure and pathophysiological change of a focus can be reflected, and the diagnosis accuracy is improved.

However, the conventional whole-body PET detection device has a large volume, and a scanning detection space surrounded by the detectors of the conventional whole-body PET detection device is large and annular, so that when a patient scans data, the patient needs to lie on a detection bed and keep a body in the annular space to acquire and reconstruct the whole-body data, which not only increases the scanning time, but also causes processing of a lot of useless image data, thereby increasing the burden of data processing. In addition, the existing annular PET detection equipment also has the defect that the detection operation is limited due to the fixed position of the detector or the limited detection space, so that the patient can only detect the affected part in a specific posture or only can place part of the affected part in the detection space, the comfort level of the patient detection is not facilitated, the acquisition of complete information of the affected part and the reconstruction of an image are not facilitated, and the comfort level and the accuracy of the detection are influenced.

Aiming at the defects of the prior art, the PET detection equipment which is rapid and accurate in detection and flexible in operation is urgently desired by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In order to make the detection more quick accurate, and the flexible operation, the utility model provides a PET check out test set.

According to the utility model discloses PET check out test set includes: a base; the detection assembly is connected with the base and is at least arranged to rotate and be positioned relative to the base and move and be positioned longitudinally relative to the base, wherein the detection assembly comprises a first detection plate and a second detection plate which are arranged oppositely and in parallel, either one of the first detection plate and the second detection plate comprises a detection layer, a signal reading layer and a circuit board layer which are sequentially arranged along the direction away from the other one, the detection layer comprises a plurality of detection units arranged in an array, each detection unit comprises a plurality of scintillation crystals arranged in an array, the signal reading layer comprises silicon photomultipliers which are coupled with the scintillation crystals in a one-to-one mode to read scintillation signals of the scintillation crystals, and the circuit board layer is used for fixing the silicon photomultipliers and converting the scintillation signals read by the silicon photomultipliers into electric signals; and a data processing device electrically connected to the circuit board layer. Wherein the first and second detection panels in the detection assembly are arranged to be movable and positionable in a direction towards and away from each other such that the spacing between the first and second detection panels is adjustable.

Further, the detection units are aligned in the transverse direction and the longitudinal direction of the detection layer, and the detection units in the first detection plate correspond to the detection units in the second detection plate one to one.

Further, the detecting units are arranged in equal number along the transverse direction and the longitudinal direction of the detecting layer.

Further, a blocking layer for blocking radioactive rays is arranged between the adjacent detection units.

Further, the scintillation crystal includes a first crystal face for coupling with the silicon photomultiplier and a second crystal face opposite to the first crystal face for forming a detection face, and a side surface connecting the first crystal face and the second crystal face, wherein the side surface and the second crystal face are provided with a first light reflecting layer.

Further, the first detection plate and/or the second detection plate further comprises a second light reflecting layer completely covering a side of the detection layer remote from the circuit board layer.

Furthermore, the detection assembly further comprises a longitudinal adjusting arm in sliding connection with the base and a rotating arm in rotating connection with the longitudinal adjusting arm, and the first detection plate and the second detection plate are arranged on the rotating arm in parallel and at intervals and are in sliding connection with the rotating arm.

Further, the rotating arm includes: the positioning guide disc is fixedly connected with the longitudinal adjusting arm, a plurality of guide wheels are arranged on the disc surface of the positioning guide disc at intervals in the circumferential direction, and an annular groove is formed at the peripheral edge of each guide wheel; the inner peripheral edge of the annular rotating disc is matched with the annular grooves of the guide wheels at the same time, at least part of the disc surface of the annular rotating disc is overlapped with the disc surface of the positioning guide disc to form an annular overlapping area, and a plurality of positioning holes penetrate through the annular overlapping area in the circumferential direction; and a positioning member. The first detection plate and the second detection plate are connected with the annular rotating disc in a sliding mode, and the positioning component enables the annular rotating disc to rotate different angles relative to the positioning guide disc by penetrating through different positioning holes, so that the annular rotating disc can drive the first detection plate and the second detection plate to rotate to different detection positions simultaneously.

Furthermore, a plurality of positioning holes are arranged at equal intervals.

Furthermore, the annular rotating disc also comprises a guide positioning slide rod fixedly connected with the annular rotating disc, and the first detection plate and the second detection plate are connected to the guide positioning slide rod in a sliding manner.

Compared with the prior art, the utility model discloses PET check out test set has following advantage:

1) the detection component of the PET detection equipment provided by the embodiment of the utility model can be more flexibly operated at the part of the human body to be detected;

2) the utility model discloses relative and parallel arrangement's first pick-up plate and second pick-up plate's platelike design makes determine module's structure more simple among the determine module of PET check out test set, can carry out short-term test to human arbitrary position, it has flexibility and pertinence more to the position of required detection, compare in the large-scale cyclic annular detection area among the prior art, scanning time has not only been reduced, the processing to a lot of useless image data has also been avoided, thereby the processing load of data processing apparatus has been reduced widely.

3) The utility model discloses the adjustability of PET check out test set's detection module's position and the size of detection zone makes the detection operation to sick position not restricted to not only can realize the collection of the complete information in affected part and the accuracy of rebuilding with the improvement detection of image, still make the patient need not strictly to detect the affected part with specific posture, thereby improved the comfort level that the patient detected.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a PET detection device according to an embodiment of the present invention, wherein the PET detection device is in an initial state;

FIG. 2 is a schematic structural view of the PET detecting apparatus shown in FIG. 1, wherein the PET detecting apparatus is in a rotating state;

FIG. 3 is a schematic structural view of the PET detecting apparatus shown in FIG. 1, wherein the PET detecting apparatus is in a longitudinally moving state;

FIG. 4 is a schematic cross-sectional view of the first sensing plate shown in FIG. 1;

FIG. 5 is a front elevational view of the construction of the first detector plate illustrated in FIG. 1;

FIG. 6 is a schematic sectional view of the structure of the detecting unit shown in FIG. 5;

FIG. 7 is a schematic structural view of a first embodiment of the rotary arm shown in FIG. 1;

FIG. 8 is an isometric view of the pivot arm shown in FIG. 7;

FIG. 9 is a schematic view of the guide wheel of FIG. 7;

FIG. 10 is a schematic structural view of a second embodiment of the rotary arm shown in FIG. 1;

fig. 11 is a tomographic three-dimensional image processed by the PET detection apparatus according to the embodiment of the present invention, in which a three-dimensional image when the detection position of the human body is a right alignment position is shown;

fig. 12 is a tomographic three-dimensional image processed by the PET detection apparatus according to the embodiment of the present invention, in which the three-dimensional image when the detection position of the human body is an oblique side position is shown;

fig. 13 is a plan view of the tomographic stereoscopic image shown in fig. 12, in which a lesion of a suspected region of a human body is shown.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Fig. 1-3 show the structure of the PET detection apparatus 100 according to the embodiment of the present invention, which respectively show the schematic diagrams of the PET detection apparatus 100 in the initial state, the rotation state and the longitudinal movement state according to the embodiment of the present invention. As shown in fig. 1, the PET inspection apparatus 100 includes: a base 1; a detection unit 2 connected to the base 1, the detection unit 2 being provided so as to be capable of at least rotating and positioning with respect to the base 1 (a rotation state shown in fig. 2), and longitudinally moving and positioning with respect to the base 1 (a longitudinally moving state shown in fig. 3), wherein the detection unit 2 includes a first detection plate 21 and a second detection plate 22 which are arranged oppositely and in parallel, and, in conjunction with fig. 4 and 5, either one of the first detection plate 21 and the second detection plate 22 includes a detection layer 3, a signal reading layer 4, and a circuit board layer 5 which are arranged in this order in a direction away from the other, wherein the detection layer 3 includes a plurality of detection units 31 arranged in an array, as shown in fig. 6, each detection unit 31 includes a plurality of scintillation crystals 311 arranged in an array, the signal reading layer 4 includes a silicon photomultiplier 411 which is one-to-one coupled with each scintillation crystal 311 to read out a scintillation signal of the scintillation crystal 311, the circuit board layer 5 is used for fixing the silicon photomultiplier tubes 411 and converting scintillation signals read by the silicon photomultiplier tubes 411 into electrical signals; and a data processing device (not shown) electrically connected to the circuit board layer 5. Wherein the first and second detection plates 21, 22 in the detection assembly 2 are arranged to be movable and positionable in directions towards and away from each other such that the spacing between the first and second detection plates 21, 22 is adjustable.

Preferably, the data processing device (not shown in the figure) may include a data processing module and a display module electrically connected to the data processing module. The data processing module may include an electronics system and a reconstruction algorithm module. After the radioactive signals emitted from the inside of the human body are processed by the electronic system, the acquired scanning data are subjected to image reconstruction, so that a clear cross-sectional image of the to-be-detected part of the human body is displayed on the display module (as shown in fig. 11 to 13). Also preferably, the data processing device may be integrated with the base 1.

The utility model discloses PET check out test set 100 need inject radionuclide (for example fluoro deoxyglucose) into the human body before examining the position to examine to human body, and this radionuclide (carrying the positron) bioactive substance that can mark participates in the physiological metabolism of organism to can most concentrate and mark in human focus department, human affected part promptly. The utility model discloses PET check out test set 100 is examining the position to be examined of human body, at first makes it upwards or move down and fix a position along the longitudinal direction of base 1 through adjusting detecting element 2, can make the detection zone 23 (as shown in fig. 1) that forms between first pick-up plate 21 and the second pick-up plate 22 can move to the height that corresponds to the position to be examined of human body, and the position to be examined is located between first pick-up plate 21 and the second pick-up plate 22 at this moment; then, by adjusting the first detection plate 21 and the second detection plate 22 to move and position in directions toward and away from each other, the part to be examined of the human body is placed between the first detection plate 21 and the second detection plate 22; then, the detection component 2 can be opened to perform measurement imaging on the part to be detected, at this time, the radionuclide in the human body can emit positrons towards the first detection plate 21 and the second detection plate 22 simultaneously, wherein the detection layers 3 (i.e. a plurality of scintillation crystals 311) in the first detection plate 21 and the second detection plate 22 can receive the positrons, meanwhile, the signal reading layer 4 (i.e. the silicon photomultiplier 411) amplifies and reads scintillation signals of the scintillation crystals 311, the scintillation signals are converted into electric signals by a signal processing circuit (not shown in the figure) in the circuit board layer 5, and the electric signals are finally processed and imaged by a data processing device and analyzed for imaging so as to obtain a detection result of the current detection position; finally, other detection positions of the part to be detected of the human body can be obtained by adjusting the rotation and positioning of the detection assembly 2 relative to the base 1, so as to obtain the detection results of the other detection positions. The measurement process and principle of other detection bits are the same as the above process and principle, and are not described herein again.

Compared with the prior art, the utility model discloses PET check out test set 100 of embodiment has following advantage:

1) the PET detection device 100 of the embodiment of the utility model can move and position longitudinally relative to the base 1 and rotate and position relative to the base 1 by arranging the detection component 2, so that the detection component 2 can be operated at the position of the to-be-detected part of the human body more flexibly;

2) the plate-shaped design of the first detection board 21 and the second detection board 22, which are arranged relatively and in parallel in the detection assembly 2 of the PET detection device 100 of the embodiment of the present invention, makes the structure of the detection assembly 2 simpler, and is more convenient to adjust and use, and the design of the detection layer 3, the signal reading layer 4 and the circuit board layer 5 inside the first detection board 21 and the second detection board 22 can rapidly and accurately receive the corresponding signal in the human body and process the signal, so as to finally and accurately locate the position and the coordinates of the diseased part in the part to be detected of the human body through the data processing device, the above design of the present invention can rapidly detect any part of the human body, and has flexibility and pertinence to the part to be detected, compared with the large-scale annular detection area in the prior art, not only reduces the scanning time, but also avoids the processing of many useless image data, thereby greatly reducing the processing load of the data processing device, and realizing that the PET detection equipment 100 can detect the part to be detected more quickly, accurately and flexibly with lower cost;

3) the utility model discloses the adjustability of the size of the position of the detection subassembly 2 of PET check out test set 100 and detection zone 23 makes the detection operation to sick position unlimited to not only can realize the collection of the complete information in affected part and the accuracy of rebuilding with the improvement detection of image, still make the patient need not strictly to detect the affected part with specific posture, thereby improved the comfort level that the patient detected.

Here, since the scintillator 311 is generally configured in a cubic structure, the detection unit 31 configured by a plurality of the scintillator 311 is also generally square, and the signal reading layer 4 and the circuit board layer 5 are actually formed by a plurality of square silicon photomultiplier tube groups and square circuit boards, respectively, arranged at intervals. That is, the first detecting plate 21 and the second detecting plate 22 of the present application are actually formed by arranging a plurality of square detecting members including the detecting unit 31, the silicon photomultiplier group, and the circuit board at intervals. The data processing module in the data processing device of the present application is actually electrically connected to the single detecting component (i.e. including the single detecting unit 31, the silicon photomultiplier tube group and the circuit board) through the electronic system, and after the data of the circuit board is separately collected and then respectively transmitted to the reconstruction algorithm module for image reconstruction, the clear cross-sectional image of the to-be-detected part of the human body is finally displayed on the display module.

In a preferred embodiment as shown in fig. 4 and 5, the detecting units 31 may be aligned in the lateral and longitudinal directions of the detecting layer 3, with one-to-one correspondence between the detecting units 31 in the first detecting plate 21 and the detecting units 31 in the second detecting plate 22. The one-to-one correspondence is to be understood that each detection unit 31 in the first detection plate 21 is completely opposite to the corresponding detection unit 31 in the second detection plate 22, and the arrangement enables each detection unit 31 in the first detection plate 21 and the corresponding scintillation crystal 311 in each detection unit 31 in the second detection plate 22 to simultaneously receive radioactive signals generated at the same point (or the same position) of the human body, so that not only is the light splitting positioning of the scintillation crystal 311 by the silicon photomultiplier 411 easier, but also the error coding caused by receiving the radioactive signals at different positions can be avoided, and the probability of the focus error positioning can be effectively reduced. In addition, the arrangement is also beneficial to improving the resolution and the definition of the cross-sectional image imaging of the part to be detected, thereby further improving the accuracy of disease diagnosis.

In a preferred embodiment, a side wall of the first detection plate 21 may be provided with a first measuring arm 211 (shown in fig. 1) capable of telescoping in a direction perpendicular to the second detection plate 22, and a side wall of the second detection plate 22 may be formed with a second measuring arm 221 (shown in fig. 1) capable of telescoping in a direction perpendicular to the first detection plate 22, the telescoping direction of the first measuring arm 211 and the telescoping direction of the second measuring arm 221 being in the same plane. Through the arrangement, when the part to be detected of the human body is positioned between the first detection plate 21 and the second detection plate 22, the part to be detected of the human body can be positioned at the middle position between the first detection plate 21 and the second detection plate 22 by adjusting the extension lengths of the first measurement arm 211 and the second measurement arm 221 to be equal and respectively abutted against the part to be detected, so that the distances of radioactive signals received by the detection units 31 on the first detection plate 21 and the second detection plate 22 are the same, the data processing amount is reduced, and the data processing efficiency is improved.

According to the utility model discloses, in the preferred embodiment as shown in fig. 5, each detection unit 31 can be along detecting the horizontal and vertical equal quantitative arrangement of layer 3, such range can make the crosscut tomograph who waits to examine the position form into the square structure (combine shown in fig. 11), the crosscut tomograph of this square structure not only can cover the human body better and wait to examine the position to guarantee that the human body waits to examine the formation of image of position complete, still help promoting the efficiency to the processing and the analysis of the crosscut tomograph of this square, thereby help improving the human body and wait to examine the formation of image quality of position.

In a preferred embodiment, as shown in fig. 5, the detection layer 3 may include 4 rows and 4 columns of detection units 31 formed in the transverse and longitudinal directions of the detection layer 3. Further, the detection unit 31 may include a plurality of scintillator crystals 311 arranged in an array of "12 rows x12 columns", which enables higher resolution and sharpness of imaging of the cross sectional image at lower cost. Of course, the number of the detection units 31 arranged in the transverse direction and the longitudinal direction of the detection layer 3 can be specifically set according to actual needs, and is not limited herein.

According to the utility model discloses, in order to improve crosscut tomography's formation of image quality, in order to improve the utility model discloses a PET check out test set 100 can carry out following improvement to detecting element 31 to the diagnostic accuracy of sick position:

in a preferred embodiment, as shown in fig. 5, a blocking layer 33 for blocking radioactive rays may be disposed between adjacent detection units 31. The utility model discloses a PET check out test set 100 is through being equipped with barrier layer 33 between adjacent detection unit 31, can reduce effectively or avoid the scattering phenomenon that the radioactive signal that sends in the human body produced between adjacent detection unit 31's scintillation crystal 311 to avoid the signal crosstalk between adjacent detection unit 31, thereby can avoid the scattering problem to the influence of focus position judgement effectively, this helps improving the imaging quality of crosscut tomography imaging, thereby improved the utility model discloses a PET check out test set 100 is to the diagnostic accuracy in sick position. Preferably, the blocking layer 33 can be a black paint layer (not shown) sprayed on the side walls of the scintillator crystals 311, or a black cover (not shown), or a black partition 331 disposed between adjacent detection units 31 as shown in fig. 5.

In another preferred embodiment, as shown in fig. 6, the scintillator crystal 311 may include a first crystal face 312 for coupling with the silicon photomultiplier 411 and a second crystal face 313 opposite to the first crystal face 312 for forming a detection face, and a side surface 314 connecting the first crystal face 312 and the second crystal face 313. The side surface 314 and the second crystal surface 313 may have a first light reflecting layer 315 thereon. Through this setting, first reflector layer 315 can reduce the signal crosstalk between scintillation crystal 311 equally to can further improve crosscut tomography's image quality, thereby improve the utility model discloses a PET check out test set 100 is to the diagnostic accuracy in sick position. Preferably, the first reflective layer 315 may be one or more of an attached reflective film, a sprayed reflective material, or a reflective coating.

In another preferred embodiment, the first detector plate 21 and/or the second detector plate 22 may further comprise a second light-reflecting layer (not shown in the figures) completely covering the side of the detection layer 3 remote from the circuit board layer 5. The second reflective layer can further reduce the signal crosstalk between the scintillation crystals 311 and facilitate the rapid installation and use; meanwhile, this arrangement eliminates the need to provide the first light reflection layer 315 separately for each scintillator crystal 311 as in the above embodiment, which effectively reduces the production cost of the detection layer 3.

Returning to fig. 1, according to the utility model discloses, detecting component 2 still can include with base 1 sliding connection's vertical adjusting arm 6 and with vertical adjusting arm 6 rotate the swinging boom 7 of being connected, first pick-up plate 21 and second pick-up plate 22 parallel and the interval setting on swinging boom 7 and with swinging boom 7 sliding connection. With this arrangement, the two operations of moving and positioning the detecting member 2 upward or downward in the longitudinal direction of the base 1 and rotating and positioning with respect to the base 1 can be performed separately, which can effectively improve the flexibility of the operation of the detecting member 2.

Preferably, as shown in fig. 7 and 8, the rotating arm 7 may include: a positioning guide disc 71, wherein the positioning guide disc 71 is fixedly connected with the longitudinal adjusting arm 6, a plurality of guide wheels 72 are arranged on the disc surface of the positioning guide disc 71 at intervals in the circumferential direction, and an annular groove 721 (shown in combination with fig. 9) is formed on the peripheral edge of each guide wheel 72; an annular rotary disk 73, the inner periphery edge of the annular rotary disk 73 is matched with the annular slot 721 of each guide wheel 72, and the disk surface of the annular rotary disk 73 is at least partially overlapped with the disk surface of the positioning guide disk 71 to form an annular overlapping area, and a plurality of positioning holes 74 penetrate through the annular overlapping area in the circumferential direction; and a positioning member (not shown in the drawings). The first detecting plate 21 and the second detecting plate 22 are slidably connected with the annular rotating disc 73, and the positioning component enables the annular rotating disc 73 to rotate by different angles relative to the positioning guide disc 71 by penetrating through different positioning holes 74, so that the annular rotating disc 73 can simultaneously drive the first detecting plate 21 and the second detecting plate 22 to rotate to different detecting positions.

Specifically, the positioning guide disk 71 may be fixed to the longitudinal adjustment arm 6 by bolts, the guide wheel 72 is rotatably connected to the disk surface of the positioning guide disk 71 so that the guide wheel 72 itself can rotate, and the inner peripheral edge of the annular rotating disk 73 is simultaneously fitted to the annular groove 721 of each guide wheel 72 so that the inner peripheral edge of the annular rotating disk 73 can rotate relative to the positioning guide disk while being defined in the annular groove 721, thereby achieving adjustment of the rotation angle of the detection assembly 2 relative to the longitudinal adjustment arm 6. After rotating to a desired angle (i.e., a desired detection position), a positioning member, such as a positioning pin, is inserted into the positioning hole 74 to position the annular rotary disk 73 relative to the positioning guide disk 71. Through this setting, make the utility model discloses a mode of adjustment of determine module 2 when the required angle of adjustment is more simple nimble to the operating personnel's of being convenient for operation, the simple structure of this swinging boom also changes simultaneously and makes, can effectively reduction in production cost.

Preferably, as shown in fig. 7, a plurality of positioning holes 74 may be provided at equal intervals to adjust the rotation angle of the annular rotary disk 73 at equal angles. Preferably, adjacent positioning holes 74 are angularly spaced in a range of between 5 ° and 45 °, preferably 5 °. Through this setting for annular rolling disc 73 can realize driving the fine adjustment of the rotatory rotation angle of determine module 2 to and realize the quick location to determine module 2, thereby has improved annular rolling disc 73's adjustment precision, promptly, makes the adjustment of detecting the position more various.

Of course, the rotating arm 7 of the embodiment of the present invention can also realize automatic rotation positioning, and in another embodiment as shown in fig. 10, the rotating arm 7 may include: the device comprises an annular rotating disk 73a, a rotating shaft 731 which is perpendicular to the disk surface of the annular rotating disk 73a and is connected with the annular rotating disk 73a, a first gear 732 sleeved on the rotating shaft 731, a second gear 733 meshed with the first gear 732, and a motor 734 connected with the second gear 733 to control the rotation of the second gear 734; the first detection plate 21 and the second detection plate 22 are slidably connected with the annular rotating disc 73a, the motor 734 is electrically connected with the control system, and the control system can control the motor 734 to rotate at a preset angle so as to drive the annular rotating disc 73a to rotate at a certain angle, so that the automatic rotation function of the annular rotating disc 73a is realized, and the control accuracy and convenience of an operator are further improved. In addition, except for the annular rotating disc 73, the rotating shaft 731, the first gear 732, the second gear 733 and the motor 734 can be arranged inside the longitudinal adjusting arm 6, so as to improve the aesthetic property of the PET detecting apparatus 100 of the present invention.

According to the utility model discloses, rotating arm 7 still can include with annular rolling disc 73 fixed connection's direction location slide bar 8 (shown in combination with fig. 1), first pick-up plate 21 and second pick-up plate 22 sliding connection are on direction location slide bar 8 to it is adjustable to realize the interval between first pick-up plate 21 and the second pick-up plate 22. Preferably, the guide positioning slide 8 is optionally a linear guide. The linear guide may include a slide fixedly coupled to the annular rotary disk 73 and two sliders slidably coupled to the slide, and the first detection plate 21 and the second detection plate 22 are fixedly coupled to the sliders, respectively. Wherein a linear driving motor in the linear guide rail can control the slide block to slide along the slide way and to be positioned and stopped at a preset position, thereby enabling the first detection plate 21 and the second detection plate 22 to be moved and positioned in the directions toward and away from each other by the guide positioning slide bar 8. With this arrangement, the stability of the movement of the first detection plate 21 and the second detection plate 22 can be improved.

Fig. 11 to 13 show that the PET detection device 100 of the embodiment of the present invention is used for tomographic three-dimensional images of the right mammary gland of a woman detected at different detection positions, fig. 11 is a tomographic three-dimensional image of the woman when the detection position is a positive position, and the positive position can be understood as the position of the detection component 2 relative to the base 1 as shown in fig. 3, and the woman faces the detection component 2 and places the right mammary gland in the detection region 23 of the detection component 2. Fig. 12 is a tomographic stereoscopic image of a female at a diagonal position, which can be understood as a stereoscopic image of a female armpit partially detected by the detection area 23 of the detection unit 2 by rotating the detection unit 2 counterclockwise by 45 ° with respect to the base 1 based on the position of the detection unit 2 with respect to the base 1 in fig. 1. Fig. 13 is a plan view of the tomographic three-dimensional image shown in fig. 12, in which a comprehensive observation and comparison are performed on the normal tomographic three-dimensional image and the oblique tomographic three-dimensional image, so that the oblique tomographic three-dimensional image (as shown in fig. 12) can obtain a clearer lesion site display, and a plan view (as shown in fig. 13) having a better imaging quality (i.e., a clearer lesion site display) in the oblique tomographic three-dimensional image is selected, which visually reflects the size (3.47 cm as shown in fig. 13) and the relative position of the lesion 9a in the human body and the specific coordinate 9b (X: 69.08mm Y:160.00mm Z:161.69mm as shown in fig. 13), and by measuring the patient a plurality of times within a certain time interval, pathological changes of the lesion site can be observed to know the treatment effect, and whether to adjust and optimize treatment measures is determined according to the situation, so that the situations of ineffective medication, excessive medication and the like are avoided.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

In the description of the present application, it is to be understood that the terms "longitudinal", "forward", "reverse", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A PET detection device, comprising:

a base;

a sensing assembly coupled to the base, the sensing assembly configured to be at least rotatable and positionable relative to the base and longitudinally movable and positionable relative to the base,

wherein the detection assembly comprises a first detection plate and a second detection plate which are oppositely and parallelly arranged, any one of the first detection plate and the second detection plate comprises a detection layer, a signal reading layer and a circuit board layer which are sequentially arranged along the direction far away from the other one,

the detection layer comprises a plurality of detection units arranged in an array, each detection unit comprises a plurality of scintillation crystals arranged in an array, the signal reading layer comprises silicon photomultipliers which are coupled with the scintillation crystals in a one-to-one mode to read out scintillation signals of the scintillation crystals, and the circuit board layer is used for fixing the silicon photomultipliers and converting the scintillation signals read out by the silicon photomultipliers into electric signals; and

a data processing device electrically connected to the circuit board layer; wherein the first and second detection plates in the detection assembly are arranged to be movable and positionable in directions towards and away from each other such that a spacing between the first and second detection plates is adjustable.

2. The PET detecting apparatus according to claim 1, wherein the detecting units are aligned in a lateral direction and a longitudinal direction of the detecting layer, and each detecting unit in the first detecting plate corresponds to each detecting unit in the second detecting plate one by one.

3. The PET detection apparatus of claim 2, wherein the detection units are equally arrayed in the transverse and longitudinal directions of the detection layer.

4. The PET detection apparatus according to any one of claims 1 to 3, wherein a blocking layer for blocking radioactive rays is provided between adjacent detection units.

5. The PET detection apparatus according to any one of claims 1 to 3, wherein the scintillation crystal includes a first crystal face for coupling with the silicon photomultiplier tube and a second crystal face opposite to the first crystal face for forming a detection face, and a side face connecting the first crystal face and the second crystal face, wherein a first light reflecting layer is provided on the side face and the second crystal face.

6. The PET detection apparatus of any one of claims 1 to 3, wherein the first detection panel and/or the second detection panel further includes a second light reflecting layer completely covering a side of the detection layer remote from the circuit board layer.

7. The PET detecting apparatus according to any one of claims 1 to 3, wherein the detecting unit further includes a longitudinal adjusting arm slidably coupled to the base and a rotating arm rotatably coupled to the longitudinal adjusting arm, and the first detecting plate and the second detecting plate are disposed in parallel and spaced apart on and slidably coupled to the rotating arm.

8. The PET detection apparatus of claim 7, wherein the rotary arm comprises:

the positioning guide disc is fixedly connected with the longitudinal adjusting arm, a plurality of guide wheels are arranged on the disc surface of the positioning guide disc at intervals in the circumferential direction, and an annular groove is formed at the peripheral edge of each guide wheel;

the inner peripheral edge of the annular rotating disc is matched with the annular grooves of the guide wheels at the same time, at least part of the disc surface of the annular rotating disc is overlapped with the disc surface of the positioning guide disc to form an annular overlapping area, and a plurality of positioning holes penetrate through the annular overlapping area in the circumferential direction; and

a positioning component is arranged on the base plate,

the first detection plate and the second detection plate are connected with the annular rotating disc in a sliding mode, and the positioning component enables the annular rotating disc to rotate by different angles relative to the positioning guide disc by penetrating through different positioning holes, so that the annular rotating disc can drive the first detection plate and the second detection plate to rotate to different detection positions at the same time.

9. The PET detection apparatus of claim 8, wherein the plurality of positioning holes are equally spaced.

10. The PET detecting apparatus as claimed in claim 8 or 9, wherein the annular rotary plate further includes guide positioning slide bars fixedly coupled to the annular rotary plate, and the first detecting plate and the second detecting plate are slidably coupled to the guide positioning slide bars.