CN211723203U - PET detection equipment - Google Patents

Abstract

The utility model belongs to the medical equipment field discloses a PET check out test set. The PET detection apparatus includes: a base; the annular detection assembly is connected with the base and comprises an annular detection plate, the axis of the annular detection plate is parallel to the longitudinal direction, and the annular detection plate comprises an annular detection layer, an annular signal reading layer and an annular circuit board layer which are sequentially arranged along the direction from the inner ring to the outer ring of the annular detection plate; the detection device comprises a plate-shaped detection assembly connected with a base, wherein the plate-shaped detection assembly comprises a first detection plate and a second detection plate which are oppositely and parallelly arranged, and any one of the first detection plate and the second detection plate comprises a plate-shaped detection layer, a plate-shaped signal reading layer and a plate-shaped circuit board layer which are sequentially arranged along the direction far away from the other one; and a data processing device electrically connected to both the annular circuit board layer and the plate-shaped circuit board layer. The PET detection equipment not only occupies small detection space, but also can improve the flexibility of operation during human body detection.

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 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, existing PET detection devices are often classified into two types: one type is whole-body PET detection equipment, which has a large volume, and a patient needs to lie on a detection bed and keep the body in the annular space when performing data scanning, so that not only is the scanning time increased, but also the large-volume PET detection equipment needs to provide a large detection space for the patient, and the utilization rate of the space is reduced; the other type is a local PET detection device, although the device occupies a small detection space, the detector of the device is annular and fixed in position, so that the detection operation of the device is limited, and a patient can only place a specific part in the annular detector in a specific posture, so that the local PET detection device has low operation flexibility and a small detection range when detecting a human body.

Aiming at the defects of the prior art, a PET detection device is urgently expected by technical personnel in the field, so that the PET detection device not only occupies small detection space, but also can improve the flexibility of operation during human body detection.

SUMMERY OF THE UTILITY MODEL

The utility model provides a PET check out test set makes its detection space that not only occupies little, can also improve the flexibility to human detection time measuring operation.

According to the utility model discloses PET check out test set includes: a base; the annular detection assembly is connected with the base and is at least arranged to move longitudinally relative to the base and positioned, the annular detection assembly comprises an annular detection plate, the axis of the annular detection plate is parallel to the longitudinal direction, and the annular detection plate comprises an annular detection layer, an annular signal reading layer and an annular circuit board layer which are sequentially arranged along the direction from the inner ring to the outer ring of the annular detection plate, so that a circular detection area is formed in the annular detection plate; a plate-shaped detection member connected to the base, the plate-shaped detection member being provided to be at least capable of rotating and positioning with respect to the base and to be longitudinally moved and positioned with respect to the base, wherein the plate-shaped detection member includes a first detection plate and a second detection plate that are provided in parallel and opposite to each other, either one of the first detection plate and the second detection plate includes a plate-shaped detection layer, a plate-shaped signal reading layer, and a plate-shaped circuit board layer that are provided in this order in a direction away from the other one, the first detection plate and the second detection plate in the plate-shaped detection member being provided to be capable of moving and positioning in directions toward and away from each other so that a space between the first detection plate and the second detection plate is adjustable; and a data processing device electrically connected to both the annular circuit board layer and the plate-shaped circuit board layer.

Furthermore, the annular detection layer and the plate-shaped detection layer respectively comprise a plurality of detection units arranged in an array, each detection unit comprises a plurality of scintillation crystals arranged in an array, the annular signal reading layer and the plate-shaped signal reading layer respectively comprise silicon photomultipliers which are coupled with the scintillation crystals in a one-to-one manner so as to read scintillation signals of the scintillation crystals, and the annular circuit board layer and the plate-shaped circuit board layer are used for fixing the corresponding silicon photomultipliers respectively and converting the scintillation signals read by the corresponding silicon photomultipliers into electric signals.

Furthermore, all the detection units in the annular detection layer are arranged at intervals along the circumferential direction of the annular detection layer, and any one detection unit arranged on the circumferential direction of the annular detection layer is opposite to the other detection unit opposite to the detection unit.

Furthermore, the detection units in the plate-shaped detection layer are aligned in the transverse direction and the longitudinal direction of the plate-shaped 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 annular detection plate further includes an annular light reflecting layer completely covering a side of the annular detection layer remote from the annular circuit board layer, and/or the first detection plate and the second detection plate further include a plate-like light reflecting layer completely covering a side of the plate-like detection layer remote from the plate-like circuit board layer.

Further, the annular detection assembly also comprises a guide rail arranged on the base in parallel with the longitudinal direction of the base, a sliding block connected with the guide rail in a sliding mode, and a motor used for driving the sliding block to move and position relative to the guide rail in the longitudinal direction, wherein the annular detection plate is horizontally connected to the sliding block.

Furthermore, the annular detection assembly further comprises a rotating shaft, one end of the rotating shaft is rotatably connected with the sliding block, the other end of the rotating shaft is fixedly connected with the annular detection plate, and the axis of the rotating shaft is perpendicular to the longitudinal direction of the base.

Furthermore, the plate-shaped 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, the longitudinal adjusting arm and the guide rail are oppositely arranged on two sides of the base, and the first detection plate and the second detection plate are arranged on the rotating arm in parallel 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, 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 annular detection component and the plate-shaped detection component which are included in the PET detection equipment provided by the embodiment of the utility model can realize the detection of the focus of the human body, so that the selective operability of the PET detection equipment in human body detection is more flexible, and the position of the part to be detected of the human body can be better adapted;

2) the volume of the annular detection component and the plate-shaped detection component of the PET detection equipment provided by the embodiment of the utility model is smaller, so that the detection space occupied by the PET detection equipment is small, and the utilization rate of the space is improved;

3) the PET detection equipment provided by the embodiment of the utility model can detect different parts of patients through the annular detection component and the plate-shaped detection component, or detect different patients simultaneously, and can collect the scanning data of each detection component separately or simultaneously through the data processing device and rebuild separate images, thereby the use of the PET detection equipment of the utility model is more convenient and flexible, and the detection efficiency is further improved;

4) 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.

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;

FIG. 2 is a schematic structural view of the PET detecting apparatus shown in FIG. 1, in which the loop detecting plate and the plate-shaped detecting member are in an initial state;

FIG. 3 is a schematic structural view of the PET detecting apparatus shown in FIG. 1, wherein the plate-shaped detecting unit is in a rotating state;

FIG. 4 is a schematic configuration view of the PET detecting apparatus shown in FIG. 1, in which a plate-shaped detecting unit is in a longitudinally moving state;

FIG. 5 is a schematic cross-sectional view of the construction of the annular sensing plate shown in FIG. 1;

FIG. 6 is a schematic cross-sectional view of the first sensing plate shown in FIG. 2;

FIG. 7 is a front elevational view of the construction of the first detector plate illustrated in FIG. 2;

FIG. 8 is a schematic sectional view of the structure of the detecting unit shown in FIG. 7;

FIG. 9 is a schematic structural view of a first embodiment of the rotary arm shown in FIG. 2;

FIG. 10 is an isometric view of the pivot arm shown in FIG. 9;

FIG. 11 is a schematic view of the guide wheel of FIG. 9;

FIG. 12 is a schematic structural view of a second embodiment of the rotary arm shown in FIG. 2;

fig. 13 is a tomographic three-dimensional image processed by the PET detection apparatus according to the embodiment of the present invention, wherein the three-dimensional image when the plate-shaped detection assembly is used to detect the human body is in the right alignment position is shown;

fig. 14 is a tomographic three-dimensional image processed by the PET detection device according to the embodiment of the present invention, wherein the three-dimensional image is shown when the detection of the human body by the plate-shaped detection assembly is in an oblique lateral position;

fig. 15 is a plan view of the tomographic stereoscopic image shown in fig. 14, 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. 1-4 show the structure of the PET detection apparatus 100 according to the embodiment of the present invention, which respectively show the structure of the PET detection apparatus 100 according to the embodiment of the present invention, and the schematic diagram of the plate-shaped detection component located in the initial state, the rotation state and the longitudinal movement state. As shown in fig. 1, the PET inspection apparatus 100 includes: a base 10; a loop detecting member 20 attached to the base 10, the loop detecting member 20 being disposed so as to be at least longitudinally movable and positionable with respect to the base 10, the loop detecting member 20 including a loop detecting plate 21 having an axis parallel to the longitudinal direction, as shown in fig. 4, the loop detecting plate 21 including a loop detecting layer 22, a loop signal reading layer 23, and a loop circuit board layer 24 which are sequentially disposed in the direction from the inner loop to the outer loop of the loop detecting plate 21 so that a circular detecting area 26 is formed in the loop detecting plate 21; a plate-like detecting member 30 attached to the base 10, the plate-like detecting member 30 being provided so as to be capable of at least rotating and positioning with respect to the base 10 (a rotating state shown in FIG. 3), and moving and positioning longitudinally with respect to the base 10 (a longitudinally moving state shown in FIG. 4), wherein the plate-shaped detecting member 30 includes a first detecting plate 31 and a second detecting plate 32 (shown in fig. 2) which are arranged oppositely and in parallel, and as shown in fig. 6 and 7, either one of the first detecting plate 31 and the second detecting plate 32 includes a plate-shaped detecting layer 33, a plate-shaped signal reading layer 34, and a plate-shaped circuit board layer 35 which are arranged in this order in a direction away from the other, and the first detecting plate 31 and the second detecting plate 32 in the plate-shaped detecting member 30 are arranged to be movable and positionable in directions toward and away from each other so that a pitch between the first detecting plate 31 and the second detecting plate 32 is adjustable; and a data processing device electrically connected to both the ring-shaped circuit board layer 24 and the plate-shaped circuit board layer 35.

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. Wherein the data processing module may include an electronics system and a plurality of reconstruction algorithm modules electrically connected to the ring-shaped circuit board layer 24 and the plate-shaped circuit board layer 35, respectively. 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. 13 to 15). Also preferably, the data processing device may be integrated with the base 10. It should be noted here that, the data processing device is electrically connected to the annular circuit board layer 24 and the plate-shaped circuit board layer 35 at the same time, so that it can be understood that, when the annular detection assembly 20 and the plate-shaped detection assembly 30 are used at the same time, that is, when different human body parts to be detected are detected at the same time, the data processing device can separately reconstruct images of the scan data acquired from the annular detection assembly 20 and the plate-shaped detection assembly 30, so as to obtain corresponding detection results; and when the ring-shaped inspection unit 20 and the plate-shaped inspection unit 30 are used separately, the data processing device can collect only the scan data of the inspection unit being used and perform separate image reconstruction.

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 PET detection apparatus 100 of the present invention can select different detection components according to the specific position of the focus of the human body. For example, when a patient is detecting a breast, the annular sensing assembly 20 can be selected for use in detecting a breast of a person, that is, the annular sensing member 20 is adjusted to be moved and positioned upward or downward in the longitudinal direction of the base 10, the longitudinal direction is understood to be the vertical direction of the base 10, the patient can lie on the detection bed and place the part to be detected in the circular detection area 26 of the annular detection plate 21, the radioactive nuclide in the human body can emit positrons towards the annular detection layer 22 at the same time, the annular detection layer 22 can receive the positrons, the annular signal reading layer 23 can amplify and read the positron signals, the positron signals are then converted into electrical signals by signal processing circuitry (not shown) in the ring-shaped circuit board layer 24, the electric signal is finally processed and imaged by a data processing device, and the imaged electric signal is analyzed to obtain the detection result of the current detection position. When the patient selects to use the plate-shaped detecting member 30, the detecting region 301 (shown in fig. 2) formed between the first detecting plate 31 and the second detecting plate 32 can be moved to a height corresponding to the to-be-detected portion of the human body, which is located between the first detecting plate 31 and the second detecting plate 32, by first adjusting the plate-shaped detecting member 30 to move upward or downward along the longitudinal direction of the base 10 and to be positioned; then, by adjusting the first detection plate 31 and the second detection plate 32 to move and position in directions toward and away from each other, the part of the human body to be examined is placed between the first detection plate 31 and the second detection plate 32; the plate-shaped detecting component 30 can be opened to perform measurement imaging on the to-be-detected part, and the measurement process and principle of the detecting component are the same as those described above, and are not described in detail here.

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

1) the annular detection component 20 and the plate-shaped detection component 30 included in the PET detection device 100 of the embodiment of the present invention can both detect the part to be detected of the human body, and the patient can select the detection component correspondingly according to different detection parts, so that the PET detection device 100 of the present invention can be more flexible in the selectable operability during the detection of the human body, and can be better adapted to the position of the part to be detected of the human body;

2) the volume of the annular detection component 20 and the plate-shaped detection component 30 of the PET detection device 100 of the embodiment of the present invention is small, so that the PET detection device 100 of the present invention occupies a small detection space, thereby improving the utilization rate of the space;

3) the PET detection device 100 of the embodiment of the present invention can detect different parts of a patient through the annular detection component 20 and the plate-shaped detection component 30, or detect different patients simultaneously, and can collect the scan data of each detection component separately or simultaneously through the data processing device and perform separate image reconstruction, so that the PET detection device 100 of the present invention is more convenient and flexible to use, and further improves the detection efficiency;

4) the plate-shaped design of the first detecting board 31 and the second detecting board 32 arranged in parallel relatively in the plate-shaped detecting component 30 of the PET detecting apparatus 100 of the embodiment of the present invention makes the structure of the plate-shaped detecting component 30 simpler and more convenient to adjust and use, and the plate-shaped detecting layer 33, the plate-shaped signal reading layer 34 and the plate-shaped circuit board layer 35 inside the first detecting board 31 and the second detecting board 32 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, which has more flexibility and pertinence to the part to be detected, compared with the large-scale ring-shaped detecting area in the prior art, not only reduces the scanning time, the processing of a large amount of useless image data is also avoided, so that the processing load of the data processing device is greatly reduced, and the PET detection device 100 can detect the part to be detected more quickly, accurately and flexibly at substantially lower cost.

In a preferred embodiment, as shown in fig. 7 and 8, the annular detection layer 22 and the plate-shaped detection layer 33 each include a plurality of detection units 40 arranged in an array, each detection unit 40 includes a plurality of scintillation crystals 401 arranged in an array, the annular signal reading layer 23 and the plate-shaped signal reading layer 34 each include silicon photomultipliers 402 (shown in fig. 8) coupled one-to-one with each scintillation crystal 401 to read out scintillation signals of the scintillation crystals 401, and the annular circuit board layer 24 and the plate-shaped circuit board layer 35 are used for fixing the corresponding silicon photomultipliers 402 and converting scintillation signals read out by the corresponding silicon photomultipliers 402 into electrical signals. With this arrangement, the radioactive nuclide in the human body can be received by the plurality of scintillation crystals 401 arranged in an array on the annular detection layer 22 and the plate-shaped detection layer 33, and at the same time, the silicon photomultiplier 402 can amplify and read the scintillation signal of the scintillation crystals 401, and the scintillation signal is then converted into an electric signal by a signal processing circuit (not shown in the figure) in the circuit board layer 5, and the electric signal is finally processed and imaged by the data processing device, and analyzed for the imaging, so as to obtain the detection result of the current detection position.

Here, as shown in fig. 5, since the scintillation crystal 401 is generally configured as a cubic structure, the detection unit 40 configured by a plurality of scintillation crystals 401 is also generally square, and the ring-shaped signal reading layer 23 and the ring-shaped circuit board layer 24 are actually formed by a plurality of square silicon photomultiplier tubes 231 and square circuit boards 241, respectively, arranged at intervals. That is, the annular detection plate 21 of the present application is actually formed by arranging a plurality of square detection members including the detection unit 40, the silicon photomultiplier tube group 231, and the circuit board 241 at intervals in the circumferential direction of the annular detection plate 21, and forming the annular detection layer 22, the annular signal reading layer 23, and the annular circuit board layer 24, and therefore, the annular detection layer 22, the annular signal reading layer 23, and the annular circuit board layer 24 in the present application should be understood as an approximately annular structure composed of a plurality of planes. It should be further added that the data processing module in the data processing apparatus of the present application is actually electrically connected to the single detecting components (i.e. the single detecting unit 40, the silicon photomultiplier tube 231 and the circuit board 241 are included) through an electronic system, and after the data of the circuit board 241 are separately collected and then respectively transmitted to the reconstruction algorithm module for image reconstruction, a 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, the detecting units 40 in the annular detecting layer 22 may be arranged at intervals along the circumferential direction of the annular detecting layer 22, and any one detecting unit 40 arranged in the circumferential direction of the annular detecting layer 22 is directly opposite to another detecting unit 40 opposite to the detecting unit. Through the arrangement, each detection unit 40 in the annular detection layer 22 and the scintillation crystal 401 in the other detection unit 40 opposite to the detection unit can simultaneously receive radioactive signals generated at the same point (or the same position) of a human body, so that the silicon photomultiplier 402 can not only make the spectral positioning of the scintillation crystal 401 easier, but also avoid error coding caused by receiving the radioactive signals at different positions, and the probability of focus error positioning can be effectively reduced. Preferably, the detecting units 40 in the annular detecting layer 22 can be arranged in a row at intervals along the circumferential direction of the annular detecting layer 22, and the arrangement can be adjusted to move the annular detecting component 20 upwards or downwards along the longitudinal direction of the base 10 when the human body is detected by the annular detecting component 20, for example, when the mammary gland of the human body is detected, so that the annular detecting component 20 can completely scan the mammary gland of the human body, thereby obtaining a complete image of the mammary gland of the human body. With this arrangement, the cost of the annular inspection assembly 20 can be effectively reduced; of course, the detecting units 40 in the annular detecting layer 22 may also be arranged in a plurality of rows at intervals along the circumferential direction of the annular detecting layer 22 to increase the detecting space of the circular detecting area 26 constructed by the annular detecting layer 22, thereby improving the detecting efficiency of the annular detecting assembly 20.

In a preferred embodiment as shown in fig. 6 and 7, the detecting units 40 in the plate-shaped detecting layer 33 may be aligned in the lateral and longitudinal directions of the plate-shaped detecting layer 33, and the detecting units 40 in the first detecting plate 31 correspond to the detecting units 40 in the second detecting plate 32 one by one. The one-to-one correspondence is to be understood that each detection unit 40 in the first detection plate 31 is completely opposite to the corresponding detection unit 40 in the second detection plate 32, and the arrangement enables each detection unit 40 in the first detection plate 31 and the corresponding scintillation crystal 401 in each detection unit 40 in the second detection plate 32 to simultaneously receive radioactive signals occurring at the same point (or the same position) of the human body, so that not only is the light splitting positioning of the silicon photomultiplier tube 402 on the scintillation crystal 401 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 two settings are 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 detecting plate 31 may be provided with a first measuring arm 302 (shown in fig. 2) capable of telescoping in a direction perpendicular to the second detecting plate 32, and a side wall of the second detecting plate 32 may be formed with a second measuring arm 303 (shown in fig. 2) capable of telescoping in a direction perpendicular to the first detecting plate 31, the telescoping direction of the first measuring arm 302 and the telescoping direction of the second measuring arm 303 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 31 and the second detection plate 32, the part to be detected of the human body can be positioned at the middle position between the first detection plate 31 and the second detection plate 32 by adjusting the extension lengths of the first measuring arm 302 and the second measuring arm 303 to be equal and respectively abutted against the part to be detected, so that the distances of radioactive signals received by the detection units 40 on the first detection plate 31 and the second detection plate 32 at the same time 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. 7, each detection unit 40 can follow the horizontal and vertical equi-quantitative range of platelike detection layer 33, such range can make the crosscut tomograph who waits to examine the position form into the square structure, 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. 7, the plate-shaped detection layer 33 may include 4 rows and 4 columns of detection units 40 formed in the lateral and longitudinal directions of the plate-shaped detection layer 33. Further, the detection unit 40 may include a plurality of scintillation crystals 401 arranged in an array of "12 rows x12 columns", which arrangement enables higher resolution and sharpness of the imaging of the transection tomogram at lower cost. Of course, the number of the detection units 40 arranged along the transverse direction and the longitudinal direction of the plate-shaped detection layer 33 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 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 40 to the diagnostic accuracy in sick position:

in a preferred embodiment, the annular detection panel 21 may further comprise an annular light-reflecting layer 25 completely covering a side of the annular detection layer 22 remote from the annular circuit board layer 24, and/or the first detection panel 31 and the second detection panel 32 may further comprise a plate-like light-reflecting layer (not shown) completely covering a side of the plate-like detection layer 33 remote from the plate-like circuit board layer 35. The arrangement of the annular reflecting layer 25 and the plate-shaped reflecting layer can reduce the signal crosstalk between the scintillation crystals 401, and is convenient for quick installation and use.

In another preferred embodiment, as shown in fig. 8, the scintillator crystal 401 may include a first crystal face 411 for coupling with the silicon photomultiplier tube 402 and a second crystal face 412 opposite to the first crystal face 411 for forming a detection face, and a side surface 413 connecting the first crystal face 411 and the second crystal face 412. Wherein, a reflective layer 414 may be disposed on the side surface 413 and the second crystal plane 412. Through this setting, the signal that reflective layer 414 can reduce between the scintillation crystal 401 is crosstalked equally to can further improve crosscut tomographic image's imaging quality, thereby improve the utility model discloses a PET check out test set 100 is to the diagnostic accuracy of the position of sickening. Preferably, the reflective layer 414 may be one or more of an attached reflective film, a sprayed reflective material, or a reflective coating.

In a preferred embodiment, as shown in fig. 7, a blocking layer 311 for blocking radioactive rays may be disposed between adjacent detection units 40. The utility model discloses a PET check out test set 100 is through being equipped with barrier layer 311 between adjacent detection unit 40, can reduce effectively or avoid the scattering phenomenon that the radioactive signal that sends in the human body produced between adjacent detection unit 40's scintillation crystal 401 to avoid the signal crosstalk between adjacent detection unit 40, 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 311 may be a black paint layer (not shown) sprayed on the side wall of the scintillator crystal 401, or a black cover (not shown), or a black partition formed between the adjacent detection units 40.

In a preferred embodiment, the loop sensing assembly 20 may further include a guide rail (not shown) provided on the base in parallel with the longitudinal direction of the base 10 and a slider (not shown) slidably coupled to the guide rail, and a motor (not shown) for driving and positioning the slider in the longitudinal direction with respect to the guide rail, and the loop sensing plate 21 is horizontally coupled to the slider. With this arrangement, the operation of moving and positioning the annular inspection assembly 20 upward or downward in the longitudinal direction of the base 10 can be made more flexible.

Preferably, the loop detecting assembly 20 may further include a rotating shaft (not shown) having one end rotatably connected to the slider (not shown) and the other end fixedly connected to the loop detecting plate 21, and an axis of the rotating shaft is perpendicular to the longitudinal direction of the base 10. Through this setting, annular determine module 20 can set to rotate for base 10 through the pivot to make annular determine module 20 can be more nimble be adapted to the detection of human different positions, thereby further improvement the utility model discloses a PET check out test set 100's the flexibility of use.

Returning to fig. 2, according to the present invention, the plate-shaped detecting member 30 may further include a longitudinal adjusting arm 36 slidably connected to the base 10 and a rotating arm 37 rotatably connected to the longitudinal adjusting arm 36, the longitudinal adjusting arm 36 is disposed on two sides of the base opposite to the guide rail, and the first detecting plate 31 and the second detecting plate 32 are disposed on the rotating arm 37 in parallel and at an interval and slidably connected to the rotating arm 37. With this arrangement, the two operations of moving and positioning the plate-like inspection member 30 upward or downward in the longitudinal direction of the base 10 and rotating and positioning with respect to the base 10 can be performed separately, which can effectively improve the flexibility of the operation of the plate-like inspection member 30.

Preferably, as shown in fig. 9 and 10, the rotating arm 37 may include: a positioning guide disk 371, wherein the positioning guide disk 371 is fixedly connected with the longitudinal adjusting arm 36, a plurality of guide wheels 372 are arranged on the disk surface of the positioning guide disk 371 at intervals in the circumferential direction, and an annular groove 375 (shown in combination with fig. 11) is formed at the peripheral edge of each guide wheel 372; an annular rotary disc 373, the inner peripheral edge of the annular rotary disc 373 is simultaneously matched with the annular grooves 375 of the guide wheels 372, the disc surface of the annular rotary disc 373 is at least partially overlapped with the disc surface of the positioning guide disc 371 to form an annular overlapping area, and a plurality of positioning holes 374 penetrate through the annular overlapping area in the circumferential direction; and a positioning member (not shown in the drawings). The first detecting plate 31 and the second detecting plate 32 are slidably connected to the annular rotary disk 373, and the positioning member causes the annular rotary disk 373 to rotate by different angles relative to the positioning guide disk 371 by passing through different positioning holes 374, so that the annular rotary disk 373 can simultaneously drive the first detecting plate 31 and the second detecting plate 32 to rotate to different detecting positions.

Specifically, the positioning guide disk 371 may be fixed to the longitudinal adjustment arm 36 by bolts, the guide wheel 372 is rotatably connected to the disk surface of the positioning guide disk 371, so that the guide wheel 372 itself can rotate, and the inner peripheral edge of the annular rotary disk 373 is simultaneously fitted to the annular groove 375 of each guide wheel 372, so that the inner peripheral edge of the annular rotary disk 373 can rotate relative to the positioning guide disk while being defined in the annular groove 375, thereby adjusting the rotation angle of the plate-like detection member 30 relative to the longitudinal adjustment arm 36. 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 374 to position the annular rotary disk 373 with respect to the positioning guide disk 371. Through this setting, make the utility model discloses a plate-like determine module 30 is more simple nimble at the adjustment mode when adjusting required angle to the operating personnel's of being convenient for operation, the simple structure of this swinging boom also changes the manufacturing simultaneously, can effectively reduction in production cost.

Preferably, as shown in fig. 9, a plurality of positioning holes 374 may be provided at equal intervals to adjust the rotation angle of the annular rotary disk 373 at equal angles. Preferably, adjacent locating holes 374 are angularly spaced in a range between 5 ° and 45 °, preferably 5 °. Through this setting for annular rolling disc 373 can realize driving the fine adjustment of the rotatory rotation angle of platelike determine module 30 to and realize the quick location to platelike determine module 30, thereby improved annular rolling disc 373's adjustment precision, promptly, make the adjustment of detecting the position more various.

Of course, the rotating arm 37 of the present invention may also achieve automatic rotational positioning, and in another embodiment as shown in fig. 12, the rotating arm 37 may include: an annular rotating disk 373a, a rotating shaft 376 which is perpendicular to the disk surface of the annular rotating disk 373a and is connected with the annular rotating disk 373a, a first gear 377 which is sleeved on the rotating shaft 376, a second gear 378 which is meshed with the first gear 377, and a motor 379 which is connected with the second gear 378 to control the rotation of the second gear 378; the first detection plate 31 and the second detection plate 32 are slidably connected with the annular rotary disk 373a, the motor 379 is electrically connected with the control system, and the control system can control the motor 379 to rotate at a preset angle to drive the annular rotary disk 373a to rotate at a certain angle, so that the automatic rotation function of the annular rotary disk 373a is realized, and the control accuracy and convenience of an operator are further improved. In addition, except for the annular rotary disk 373, the rotary shaft 376, the first gear 377, the second gear 378 and the motor 379 can be arranged inside the longitudinal adjusting arm 36, 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 37 still can include with annular rolling disc 373 fixed connection's direction location slide bar 38 (combine shown in fig. 2), first pick-up plate 31 and second pick-up plate 32 sliding connection are on direction location slide bar 38 to it is adjustable to realize the interval between first pick-up plate 31 and the second pick-up plate 32. Preferably, the guide positioning slide 38 is optionally a linear guide. The linear guide may include a slide fixedly connected to the annular rotary disk 373 and two sliders slidably connected to the slide, and the first sensing plate 31 and the second sensing plate 32 are fixedly connected 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 positionally stopped at a preset position, thereby enabling the first detection plate 31 and the second detection plate 32 to be moved and positioned in directions toward and away from each other by the guide positioning slide bar 38. With this arrangement, the stability of the movement of the first detection plate 31 and the second detection plate 32 can be improved.

Fig. 13 to 15 show the tomographic three-dimensional images of the right breast of the female detected by the plate-shaped detecting element 30 of the PET detecting device 100 according to the present invention at different positions, fig. 13 is the tomographic three-dimensional image of the female when the position of the female is the positive position, the positive position can be understood as the position of the plate-shaped detecting element 30 relative to the base 10 as shown in fig. 2, and the female faces the plate-shaped detecting element 30 and places the right breast in the detecting area 301 of the plate-shaped detecting element 30. Fig. 14 is a tomographic stereoscopic image of a female at a detection site of an oblique side position, which can be understood as a stereoscopic image of a female armpit where the plate-like detection member 30 is rotated counterclockwise by 45 ° with respect to the base 10 based on the position of the plate-like detection member 30 with respect to the base 10 in fig. 2 so that the detection zone 301 of the plate-like detection member 30 can detect a part of the female armpit. FIG. 15 is a plan view of the tomographic three-dimensional image shown in FIG. 14, wherein the oblique tomographic three-dimensional image (as shown in FIG. 14) can be displayed with a clearer focal position by comparing the normal tomographic three-dimensional image and the oblique tomographic three-dimensional image through comprehensive observation, and a plan view (as shown in FIG. 15) with a better imaging quality (i.e., a clearer focal display) in the oblique tomographic three-dimensional image is selected, which visually reflects the size (3.47 cm as shown in FIG. 15) 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. 15), and by measuring the patient a plurality of times within a certain time interval, pathological changes of the lesion 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 (10)

1. A PET detection device, comprising:

a base;

the annular detection assembly is connected with the base and is at least capable of longitudinally moving and positioning relative to the base, the annular detection assembly comprises an annular detection plate, the axis of the annular detection plate is parallel to the longitudinal direction, and the annular detection plate comprises an annular detection layer, an annular signal reading layer and an annular circuit board layer which are sequentially arranged along the direction from the inner ring to the outer ring of the annular detection plate, so that a circular detection area is formed in the annular detection plate;

a plate-shaped detection member attached to the base, the plate-shaped detection member being provided so as to be at least capable of rotating and positioning with respect to the base and capable of moving and positioning longitudinally with respect to the base, wherein the plate-shaped detection member includes a first detection plate and a second detection plate that are provided oppositely and in parallel, either one of the first detection plate and the second detection plate includes a plate-shaped detection layer, a plate-shaped signal reading layer, and a plate-shaped circuit board layer that are provided in this order in a direction away from the other, and the first detection plate and the second detection plate in the plate-shaped detection member are provided so as to be capable of moving and positioning in directions toward and away from each other so that a pitch between the first detection plate and the second detection plate is adjustable; and

and a data processing device electrically connected to both the annular circuit board layer and the plate circuit board layer.

2. The PET detection apparatus of claim 1, wherein the annular detection layer and the plate-shaped detection layer each include a plurality of detection units arranged in an array, each of the detection units includes a plurality of scintillation crystals arranged in an array, the annular signal reading layer and the plate-shaped signal reading layer each include silicon photomultipliers coupled with each of the scintillation crystals in a one-to-one manner to read out scintillation signals of the scintillation crystals, and the annular circuit board layer and the plate-shaped circuit board layer are configured to fix the corresponding silicon photomultipliers respectively and convert scintillation signals read out by the corresponding silicon photomultipliers into electrical signals.

3. The PET detection apparatus according to claim 2, wherein the detection units in the annular detection layer are arranged at intervals in a circumferential direction of the annular detection layer, and any one of the detection units arranged in the circumferential direction of the annular detection layer is directly opposite to another of the detection units opposite thereto.

4. The PET detecting apparatus as claimed in claim 2, wherein the detecting units in the plate-shaped detecting layer are aligned in a lateral direction and a longitudinal direction of the plate-shaped detecting layer, and each detecting unit in the first detecting plate corresponds to each detecting unit in the second detecting plate one to one.

5. The PET detection apparatus according to any one of claims 2 to 4, wherein the loop detection plate further includes a loop light reflecting layer completely covering a side of the loop detection layer remote from the loop circuit board layer, and/or the first detection plate and the second detection plate further include a plate light reflecting layer completely covering a side of the plate detection layer remote from the plate circuit board layer.

6. The PET detecting apparatus according to any one of claims 1 to 4, wherein the loop detecting assembly further includes a guide rail provided on the base in parallel with a longitudinal direction of the base and a slider slidably coupled with the guide rail, and a motor for driving the slider to move and position in the longitudinal direction with respect to the guide rail, the loop detecting plate being coupled to the slider.

7. The PET detecting apparatus as claimed in claim 6, wherein the loop detecting unit further includes a rotation shaft having one end rotatably coupled to the slider and the other end fixedly coupled to the loop detecting plate, the rotation shaft having an axis perpendicular to a longitudinal direction of the base.

8. The PET detecting apparatus as claimed in claim 6, wherein the plate-shaped detecting unit further includes a longitudinal adjusting arm slidably coupled to the base and a rotating arm rotatably coupled to the longitudinal adjusting arm, the longitudinal adjusting arm being disposed at both sides of the base opposite to the guide rail, and the first detecting plate and the second detecting plate being disposed on the rotating arm in parallel and spaced apart and slidably coupled to the rotating arm.

9. The PET detection apparatus of claim 8, 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.

10. The PET detection apparatus of claim 9, wherein the annular rotating disk further includes guide positioning slide bars fixedly coupled to the annular rotating disk, the first detection plate and the second detection plate being slidably coupled to the guide positioning slide bars.

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