CN213910268U - PET imaging equipment - Google Patents

Abstract

The utility model belongs to the medical equipment field discloses a PET imaging device. The PET imaging apparatus includes: the bed board is horizontally arranged at the top of the base, and a placing through hole is formed in one side of the top surface of the bed board along the length direction of the bed board; the annular PET detection device is arranged in the base, and a circular detection area which is coaxial with the placing through hole and communicated with the placing through hole is formed on the annular PET detection device; the plate-shaped PET detection device is arranged in the base at intervals relative to the annular PET detection device and comprises a first lifting mechanism fixedly connected with the base and a plate-shaped PET detection assembly connected with the driving end of the first lifting mechanism, and the plate-shaped PET detection assembly comprises a first PET detection plate and a second PET detection plate which are oppositely and parallelly arranged; and the data processing device is electrically connected with the annular PET detection device and the plate-shaped PET detection device. The utility model discloses a PET imaging device can improve the flexibility of examining time measuring operation to the people.

Description

PET imaging equipment

Technical Field

The utility model belongs to the medical equipment field, concretely relates to PET imaging device.

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 imaging 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, in order to make the affected part of the patient be detected more comprehensively, there are two detection means in general, one is a whole body PET imaging device, the size of the device is large, and the patient needs to lie on the detection bed and keep the body in the annular space when performing data scanning, which not only increases the scanning time, but also the large volume PET imaging device needs to provide a large detection space for the patient, reduces the utilization rate of the space, and increases the detection cost of the patient; the other is to use a plurality of local PET imaging devices for combined detection, for example, a ring PET imaging device and a plate PET imaging device for combined detection, but this approach not only increases the procurement cost of medical devices, but also needs to provide a larger detection space for the ring PET imaging device and the plate PET imaging device when they are placed in the same space, which reduces the utilization rate of space, and even the plate PET imaging device is used as an auxiliary detection device to make some hospitals not procure for cost saving, thereby easily causing insufficient and comprehensive examination due to lack of corresponding local PET imaging devices.

SUMMERY OF THE UTILITY MODEL

The utility model provides a PET imaging device makes it can improve the flexibility of examining time measuring operation to the people.

According to the utility model discloses a PET imaging device includes: the bed board is horizontally arranged at the top of the base, and a placing through hole is formed in one side of the top surface of the bed board along the length direction of the bed board; the annular PET detection device is arranged in the base, and a circular detection area which is coaxial with the placing through hole and communicated with the placing through hole is formed on the annular PET detection device; the plate-shaped PET detection device is arranged in the base at intervals relative to the annular PET detection device and comprises a first lifting mechanism fixedly connected with the base and a plate-shaped PET detection assembly connected with the driving end of the first lifting mechanism, the first lifting mechanism is arranged to at least drive the plate-shaped PET detection assembly to longitudinally move and position relative to the base and drive the plate-shaped PET detection assembly to rotate and position relative to the base, the plate-shaped PET detection assembly comprises a first PET detection plate and a second PET detection plate which are oppositely and parallelly arranged, and the first PET detection plate and the second PET detection plate are arranged to move and position in directions towards and away from each other so that the distance between the first PET detection plate and the second PET detection plate is adjustable; and the data processing device is electrically connected with the annular PET detection device and the plate-shaped PET detection device.

Further, the PET imaging equipment still includes that one end is fixed in the base, and the other end and bed board fixed connection's second elevating system, second elevating system include along the vertical direction of base fix the vertical lift section in the base, vertical lift section is used for driving the bed board for base along longitudinal movement and location.

Further, the second lifting mechanism further comprises a horizontal rotating section which is arranged at the top of the vertical lifting section and is fixedly connected with the bed board, and the horizontal rotating section is arranged to enable the bed board to rotate along the horizontal direction relative to the base.

Further, PET imaging device still including connect the bottom surface at the bed board and with place the annular grid structure of through-hole intercommunication, annular grid structure constructs to be constructed and to locate in the circular detection zone by the cover, wherein, is formed with circular observation area in the annular grid structure, circular observation area with place the through-hole coaxial.

Further, a through groove for extending the plate-shaped PET detection assembly is formed on the other side of the top surface of the bed plate in the length direction, and the PET imaging device further comprises a cover plate which is connected with the bed plate in a sliding mode and used for covering the through groove.

Further, the first elevating mechanism includes: a guide slide rail fixed in the base along the transverse direction; the plate-shaped PET detection assembly is connected with the driving end of the longitudinal adjusting arm; the first lifting mechanism is further arranged to enable the plate-shaped PET detection assembly to move transversely relative to the base through the matching of the longitudinal adjusting arm and the guide sliding rail.

Further, annular PET detection device includes that the layer is surveyed to the annular that sets gradually in the inner ring to the outer loop direction along annular PET detection device, annular signal reads layer and annular circuit board layer to make annular PET detection device be formed with circular detection zone in, data processing device is connected with annular circuit board layer electricity.

Further, either one of the first PET detection board and the second PET detection board includes a plate-shaped detection layer, a plate-shaped signal reading layer, and a plate-shaped circuit board layer which are provided in this order in a direction away from the other, the data processing device being electrically connected to 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 in the circumferential direction of the annular detection layer, any detection unit arranged in the circumferential direction of the annular detection layer is opposite to the other detection unit opposite to the detection unit, 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 all the detection units in the first PET detection plate correspond to all the detection units in the second PET detection plate one to one.

Compared with the prior art, the utility model discloses PET imaging device has following advantage:

1) the utility model discloses annular PET detection device and platelike PET detection device that PET imaging equipment includes, the two can both realize the detection to the human body part of waiting to examine, and the patient can carry out corresponding selection detection subassembly according to different detection site, also can detect corresponding position simultaneously, thereby makes the utility model discloses a PET imaging equipment is more nimble in the operability of the alternative to the human body physical examination time measuring, and then can be better the position of the human body part of waiting to examine of adaptation;

2) the utility model discloses the annular PET detection device and the platelike PET detection device that PET imaging equipment has can satisfy most detection demands, simultaneously the utility model discloses the PET imaging equipment of embodiment is a complete machine equipment, thereby makes the utility model discloses a detection space that PET imaging equipment occupied is little, has improved the utilization ratio of space;

3) the utility model discloses PET imaging device can be through annular PET detection device and platelike PET detection device to patient's different positions, or detect the patient of difference simultaneously to scan data that can gather each determine module alone or simultaneously through data processing apparatus and separate the image and rebuild, thereby make the utility model discloses a PET imaging device's use is more convenient nimble, and then has improved detection efficiency.

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 view of a PET imaging apparatus according to an embodiment of the present invention, in which a plate-shaped PET detecting device is in an initial state;

FIG. 2 is a top view of the PET imaging device shown in FIG. 1;

FIG. 3 is a schematic structural view of the PET imaging apparatus shown in FIG. 1, wherein the cover plate is in an open state;

fig. 4 is a schematic configuration diagram of the PET imaging apparatus shown in fig. 1, in which a plate-shaped PET detecting device is in a longitudinally moving state;

fig. 5 is a schematic structural view of the PET imaging apparatus shown in fig. 1, in which a bed plate is in a longitudinally moving state;

fig. 6 is a schematic structural view of the PET imaging apparatus shown in fig. 1, in which a bed plate is in a horizontally rotated state;

FIG. 7 is a partial schematic view of the plate-shaped PET inspection apparatus shown in FIG. 1, showing the attachment of the plate-shaped inspection assembly to the rotary arm;

FIG. 8 is a schematic view of the annular PET detection apparatus shown in FIG. 1;

FIG. 9 is a schematic view showing the construction of the first or second PET detection panel of the plate-shaped detection member shown in FIG. 7;

fig. 10 is a front view of the first PET detector panel or the second PET detector panel shown in fig. 9.

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 to 4 show a structure of a PET imaging apparatus 100 according to an embodiment of the present invention. Fig. 1 to 3 show a structure of a PET imaging apparatus 100 according to an embodiment of the present invention, and fig. 4 shows a moving state of a plate-shaped PET detecting device 30 of the PET imaging apparatus 100. As shown in fig. 1 and 2, the PET imaging apparatus 100 includes: the bed comprises a base 10, wherein the top of the base 10 is horizontally provided with a bed plate 1, and a placing through hole 101 is formed in one side of the top surface of the bed plate 1 along the length direction; the annular PET detection device 20 is arranged in the base 10, and a circular detection area 201 which is coaxial with the placing through hole 101 and communicated with the placing through hole 101 is formed on the annular PET detection device 20; a plate-shaped PET detecting device 30 spaced apart from the ring-shaped PET detecting device 20 and disposed in the base 10, the plate-shaped PET detecting device 30 including a first elevating mechanism 3 fixedly coupled to the base 10 and a plate-shaped PET detecting member 4 coupled to a driving end of the first elevating mechanism 3, the first elevating mechanism 3 being disposed to drive at least the plate-shaped PET detecting member to move and position in a longitudinal direction with respect to the base 10 and to drive the plate-shaped PET detecting member 4 to rotate and position with respect to the base 10, the plate-shaped PET detecting member 4 including a first PET detecting plate 41 and a second PET detecting plate 42 disposed in parallel and opposite to each other, the first PET detecting plate 41 and the second PET detecting plate 42 being disposed to move and position in directions toward and away from each other such that a space between the first PET detecting plate 41 and the second PET detecting plate 42 is adjustable; and a data processing device (not shown in the figure) electrically connected to both the ring-shaped PET detecting device 20 and the plate-shaped PET detecting device 30.

Preferably, the data processing device 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 plurality of reconstruction algorithm modules electrically connected to the ring-shaped PET detecting device 20 and the plate-shaped PET detecting device 30, respectively. After the radioactive signals emitted by the human body are processed by an electronic system, the acquired scanning data is subjected to image reconstruction, so that a clear transverse sectional image of the to-be-detected part of the human body is displayed on a display module. 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 PET detecting device 20 and the plate-shaped PET detecting device 30 at the same time, so that it can be understood that, when the annular PET detecting device 20 and the plate-shaped PET detecting device 30 are used at the same time, the data processing device can separately reconstruct images of the scan data acquired by the annular PET detecting device 20 and the plate-shaped PET detecting device 30, respectively, to obtain corresponding detection results; when the ring-shaped PET detector 20 and the plate-shaped PET detector 30 are used separately, the data processing device can acquire only the scan data of the detecting unit in use and perform separate image reconstruction.

The utility model discloses PET imaging device 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 imaging apparatus 100 according to the embodiment of the present invention can select different detection components according to the specific position of the lesion of the human body. For example, when the patient detects the breast, the annular PET detection device 20 can be selected to detect the breast of the human body. During detection, a patient can lie on the bed plate 1 in a prone position, a part to be detected (such as a breast) is placed in the circular detection area 201 of the annular PET detection device 20 through the placement through hole 101, and then the annular PET detection device 20 can be opened to perform measurement imaging on the part to be detected. When the patient detects the armpit, the plate-shaped PET detection device 30 can be selected to detect the armpit of the human body. During detection, a patient can sit on the bed plate 1, the plate-shaped PET detection assembly 4 is moved upwards or downwards along the longitudinal direction of the base 10 and is positioned (as shown in fig. 4) by controlling the first lifting mechanism 3, so that the position of the plate-shaped PET detection assembly 4 is adjusted, a detection area formed between the first PET detection plate 41 and the second PET detection plate 42 can be moved to a height corresponding to the armpit of the human body, and at the moment, the part to be detected is located between the first PET detection plate 41 and the second PET detection plate 42. Then, the part to be examined of the human body is placed between the first PET detector panel 41 and the second PET detector panel 42 by adjusting the first PET detector panel 41 and the second PET detector panel 42 to be moved and positioned in directions toward and away from each other. And then the plate-shaped PET detection assembly 4 can be opened to carry out measurement imaging on the part to be detected. After the detection is finished, the first lifting mechanism 3 can be controlled to reversely retract the plate-shaped PET detection assembly 4 into the base 10. Certainly, the utility model discloses PET imaging device 100 of embodiment can also carry out comprehensive detection to the patient, and for example the patient needs all to detect mammary gland and armpit to when obtaining more accurate and complete detection data, then can only use the utility model discloses PET imaging device 100 does above detection in proper order and can accomplish.

The utility model discloses PET imaging device 100 has following advantage:

1) the utility model discloses annular PET detection device 20 and platelike PET detection device 30 that PET imaging device 100 includes, the two can both realize the detection to the position that human body is examined, and the patient can carry out corresponding selection detection subassembly according to the detection site of difference, also can detect corresponding position simultaneously, thereby makes the utility model discloses a PET imaging device 100 is more nimble in the optional operability of examining the time measuring to human body, and then can be better the position of the position that the human body is examined of adaptation;

2) the annular PET detection device 20 and the plate-shaped PET detection device 30 of the PET imaging device 100 of the embodiment of the present invention can meet most of the detection requirements, and meanwhile, the PET imaging device 100 of the embodiment of the present invention is a whole device, so that the PET imaging device 100 of the present invention occupies a small detection space, and the utilization rate of the space is improved;

3) the utility model discloses PET imaging device 100 can detect the different positions of patient through annular PET detection device 20 and platelike PET detection device 30, or detect the patient of difference simultaneously to can gather each determine module's scan data and separate the image through data processing apparatus alone or simultaneously and rebuild, thereby make the utility model discloses a PET imaging device 100's use is more convenient nimble, and then has improved detection efficiency.

In a preferred embodiment shown in fig. 1, in combination with fig. 5, the PET imaging apparatus 100 may further include a second lifting mechanism 50 having one end fixed in the base 10 and the other end fixedly connected with the bed plate 1, and the second lifting mechanism 50 may include a vertical lifting section 51 fixed in the base 10 in a vertical direction of the base 10, and the vertical lifting section 51 is used for driving the bed plate 1 to move and position in a longitudinal direction with respect to the base 10. Through this setting, can be before the patient detects, the patient lies in the bed board 1 back of pronating promptly, makes bed board 1 can rise to a take the altitude through control second elevating system 50 to make the doctor can examine the position of examining of patient through placing through-hole 101 observation, thereby can confirm more accurately and examine the position of examining, in order to realize better biopsy location, and then can improve the precision of testing result effectively.

Preferably, as shown in fig. 1, the second lifting mechanism 50 may further include a horizontal rotating section (not shown) disposed at the top of the vertical lifting section 51 and fixedly connected with the deck 1. A horizontal rotation section (not shown in the figures) is provided to enable the bedplate 1 to rotate in a horizontal direction with respect to the base 10. Specifically, the vertical lifting section 51 may include a screw sleeve, a screw rod, and other driving devices driven by a motor, or a guide rail, a slider, and other driving devices driven by a motor. The horizontal rotation section (not shown) may include a transmission such as a rotary platform driven by a motor fixed to the moving portion of the vertical elevation section 51. Of course, the vertical lifting section 51 and the horizontal rotating section (not shown) may be other transmission devices in the art. Through the setting, the utility model discloses PET imaging device 100 makes bed board 1 along longitudinal movement and location back for base 10 through vertical lift section 51, can also make bed board 1 rotate along the horizontal direction for base 10 through the horizontal rotation section (not shown in the figure), like this, can make the operation of the biopsy location of treating the position of examining can implement in the outside of base 10 to can improve the convenience that the doctor observed and fix a position effectively.

Preferably, as shown in fig. 6, a horizontal rotation section (not shown) may be provided to enable the deck 1 to rotate in a horizontal direction with respect to the base 10 to a position perpendicular to the initial position.

Returning to fig. 1, preferably, the PET imaging apparatus 100 may further include an annular mesh structure 60 connected to the bottom surface of the bed plate 1 and communicating with the placement through-holes, the annular mesh structure 60 being configured to be able to be nested within the circular detection area 201. Wherein a circular observation area is formed in the annular grid structure 60, and the circular observation area is coaxial with the placing through hole 101. Through the arrangement, as shown in fig. 5, the formed grid can facilitate the doctor to fix and observe the part to be detected after the bed plate 1 is lifted, so as to accurately realize biopsy positioning, thereby improving the detection accuracy.

Returning to fig. 3, preferably, the top surface of the bed plate 1 may be formed with a through groove 102 along the other side in the length direction thereof for the plate-shaped PET detecting assembly 4 to protrude, and the PET imaging apparatus 100 may further include a cover plate 70 slidably connected with the bed plate 1 for covering the through groove 102. With the arrangement, when a patient needs to detect the position of the armpit, the through groove 102 can be opened by controlling the cover plate 70, and the plate-shaped PET detection assembly 4 is controlled to extend out to detect the armpit of the patient, so that the detection of the patient is more convenient and quicker; and after the patient detects and accomplishes, behind platelike PET detection component 4 retracted in base 10, accessible apron 70 covers logical groove 102 again to can improve the utility model discloses PET imaging device 100's of embodiment wholeness and aesthetic property effectively.

In a preferred embodiment, the bottom surface of the cover plate 70 may be formed with a groove (not shown) for sliding engagement with the deck 1, and opposite vertical walls of the groove may be formed with sliding grooves for sliding engagement with the side edges of the deck 1. Through the cooperation of the sliding grooves and the side edge of the bed board 1, the through groove 102 can be opened or closed through the cover plate 70.

Returning to fig. 1, preferably, the first elevating mechanism 3 may include: a guide rail 31 fixed in the base 10 in the lateral direction; the longitudinal adjusting arm 32 is connected with the guide sliding rail 31 in a sliding mode along the longitudinal direction, and the plate-shaped PET detection assembly 4 is connected with the driving end of the longitudinal adjusting arm 32; wherein the first lifting mechanism 3 is further configured to enable the plate-shaped PET detecting assembly 4 to move in the transverse direction relative to the base 10 by the cooperation of the longitudinal adjusting arm 32 and the guiding slide rail 31. Through this setting, can make the degree of freedom of platelike PET detection device 30 higher, and that is platelike PET determine module 4 not only can move along vertical direction, can also move along the horizontal direction through direction slide rail 31 to the platelike PET determine module 4 of being more convenient for is close to and keeps away from the patient, with the convenience that improves the detection.

In a preferred embodiment as shown in fig. 7, the first elevating mechanism 3 may further include a rotating arm 33 rotatably connected to the longitudinal adjustment arm 32, and the first PET detector plate 41 and the second PET detector plate 42 are disposed in parallel and spaced apart on the rotating arm 33 and slidably connected to the rotating arm 33. With this arrangement, the two operations of moving and positioning the plate-like PET detecting unit 4 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 PET detecting unit 4.

Preferably, as shown in fig. 7, the rotating arm 33 may include: the rotary disc device comprises an annular rotary disc 331, a rotary shaft 332 which is perpendicular to the disc surface of the annular rotary disc 331 and is connected with the annular rotary disc 331, a first gear 333 which is sleeved on the rotary shaft 332, a second gear 334 which is meshed with the first gear 333, and a motor 335 which is connected with the second gear 334 to control the rotation of the second gear; the first PET detection plate 41 and the second PET detection plate 42 are connected with the annular rotating disc 331 in a sliding mode, the motor 335 is electrically connected with the control system, and the control system can control the motor 335 to rotate at a preset angle to drive the annular rotating disc 331 to rotate at a certain angle, so that the automatic rotation function of the annular rotating disc 331 is achieved, and the control accuracy and convenience of operators are further improved. In addition, except the annular rotating disc 331, the rotating shaft 332, the first gear 333, the second gear 334 and the motor 335 can be disposed inside the longitudinal adjusting arm 32, so as to improve the aesthetic property of the plate-shaped PET detecting device 30 of the PET imaging apparatus 100.

It is also preferable that the rotating arm 33 further includes a guide positioning slide bar 336 fixedly coupled to the annular rotating disk 331, and the first PET detector board 41 and the second PET detector board 42 are slidably coupled to the guide positioning slide bar 336 to achieve an adjustable interval between the first PET detector board 41 and the second PET detector board 42. Preferably, the guide positioning slide 336 may be selected as a linear guide. The linear guide may include a slide rail fixedly coupled to the annular rotary disk 331 and two sliders slidably coupled to the slide rail, and the first PET detector plate 41 and the second PET detector plate 42 are fixedly coupled to the sliders, respectively. Wherein the linear driving motor in the linear guide rail may control the slider to slide along the slide rail and to be positionally stopped at a preset position, thereby enabling the first PET detector board 41 and the second PET detector board 42 to be moved and positioned in directions toward and away from each other by the guide positioning slide bar. With this arrangement, the stability of the movement of the first PET detection plate 41 and the second PET detection plate 42 can be improved.

In a preferred embodiment shown in fig. 8, the annular PET detecting device 20 may include an annular detection layer 21, an annular signal reading layer 22 and an annular circuit board layer 23 which are sequentially arranged in the direction from the inner ring to the outer ring of the annular PET detecting device 20, so that a circular detection area 201 is formed in the annular PET detecting device 20, and the data processing device is electrically connected with the annular circuit board layer 23.

In a preferred embodiment as shown in fig. 9, either one of the first PET detector board 41 and the second PET detector board 42 includes a plate-shaped detection layer 411, a plate-shaped signal reading layer 412, and a plate-shaped circuit board layer 413 which are sequentially disposed in a direction away from the other, and the data processing device is electrically connected to the plate-shaped circuit board layers 413 of the first PET detector board 41 and the second PET detector board 42.

Preferably, as shown in fig. 8 and 10, each of the annular detection layer 21 and the plate-shaped detection layer 411 includes a plurality of detection units 40 arranged in an array, each of the detection units 40 includes a plurality of scintillation crystals (not shown in the figure) arranged in an array, each of the annular signal reading layer 22 and the plate-shaped signal reading layer 412 includes silicon photomultipliers (not shown in the figure) coupled with each of the scintillation crystals in a one-to-one manner to read scintillation signals of the scintillation crystals, and the annular circuit board layer 23 and the plate-shaped circuit board layer 413 are configured to fix the corresponding silicon photomultipliers respectively and convert scintillation signals read by the corresponding silicon photomultipliers into electrical signals.

Through the arrangement, annihilation photons generated by radionuclide decay in a human body can be detected by a plurality of scintillation crystals arranged on the annular detection layer 21 and the plate-shaped detection layer 411, meanwhile, the silicon photomultiplier can amplify and read scintillation signals of the scintillation crystals, the scintillation signals are converted into electric signals by a signal processing circuit in the circuit board layer, and the electric signals are finally processed and imaged by a data processing device and analyzed to obtain the detection result of the current detection position.

Here, since the scintillation crystal is generally configured as a cubic structure, the detection unit configured by a plurality of scintillation crystals is also generally square, and the ring-shaped signal reading layer 22 and the ring-shaped circuit board layer 23 are actually formed by a plurality of square silicon photomultiplier tube groups and square circuit boards, respectively, arranged at intervals. That is, the annular PET detection device of the present application is actually formed by arranging a plurality of square detection members including a detection unit, a silicon photomultiplier tube group, and a circuit board at intervals in the circumferential direction of the annular PET detection device 20, and forms an annular detection layer 21, an annular signal readout layer 22, and an annular circuit board layer 23. Therefore, the annular shape of the annular probe layer 21, the annular signal read layer 22, and the annular circuit board layer 23 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 component (i.e. including the single detecting unit, 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, 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, as shown in fig. 8, the detecting units in the annular detecting layer 21 may be arranged at intervals along the circumferential direction of the annular detecting layer 21, and any one of the detecting units arranged in the circumferential direction of the annular detecting layer 21 is directly opposite to another detecting unit opposite to the detecting unit. Preferably, the detecting units in the annular detecting layer 21 may be arranged in a row at intervals in the circumferential direction of the annular detecting layer 21, and also arranged in a plurality of rows at intervals in the circumferential direction of the annular detecting layer, so as to increase the detecting space of the circular detecting area 201 constructed by the annular detecting layer 21, thereby improving the detecting efficiency of the annular PET detecting apparatus 20.

In a preferred embodiment, as shown in fig. 10, the detector units in the plate-shaped detection layer 411 may be aligned in the lateral and longitudinal directions of the plate-shaped detection layer 411, and the detector units in the first PET detection panel 41 correspond to the detector units in the second PET detection panel 42 one by one. The one-to-one correspondence is understood to mean that each detection unit 40 in the first PET detection panel 41 is directly opposite to the opposite detection unit in the second PET detection panel 42, and the arrangement is such that the scintillation crystals in each detection unit in the first PET detection panel 41 and the opposite detection unit in the second PET detection panel 42 can simultaneously receive the radioactive signals generated at the same point (or the same position) of the human body. Therefore, the purpose of enlarging the acquisition area can be achieved, and the resolution and the definition of the cross-sectional image imaging of the part to be detected can be improved.

In the preferred embodiment shown in fig. 10, the plate-shaped detection layer 411 may include 3 rows and 3 columns of detection units formed in the lateral and longitudinal directions of the plate-shaped detection layer 411. Further, the detection unit may comprise a plurality of scintillation crystals arranged in an array of "12 rows x12 columns", which arrangement enables higher resolution and sharpness of the imaging of the cross sectional image at lower cost. Of course, the number of the detection units arranged along the transverse direction and the longitudinal direction of the plate-shaped detection layer can be specifically set according to actual needs, and is not limited herein.

According to the utility model discloses, in order to improve crosscut tomogram's formation of image quality, with improving the utility model discloses a PET imaging device 100 can carry out following improvement to the detection unit to the diagnostic accuracy in sick position:

in a preferred embodiment, the annular PET detector device 20 may further include an annular light reflecting layer 24 completely covering a side of the annular detector layer 21 remote from the annular circuit board layer 23, and/or the first and second PET detector panels 41 and 42 may further include a plate light reflecting layer 414 completely covering a side of the plate detector layer 411 remote from the plate circuit board layer 413. The annular reflecting layer 24 and the plate-shaped reflecting layer 414 are arranged to reduce signal crosstalk between the scintillation crystals and facilitate quick installation and use.

Preferably, the reflective layer may be one or more of a pasted reflective film, a sprayed reflective material or a reflective coating.

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 imaging device, comprising:

the bed plate is horizontally arranged at the top of the base, and a placing through hole is formed in one side of the top surface of the bed plate along the length direction of the bed plate;

the annular PET detection device is arranged in the base, and a circular detection area which is coaxial with the placing through hole and communicated with the placing through hole is formed on the annular PET detection device;

the plate-shaped PET detection device is arranged in the base at intervals relative to the annular PET detection device and comprises a first lifting mechanism fixedly connected with the base and a plate-shaped PET detection assembly connected with the driving end of the first lifting mechanism, the first lifting mechanism is arranged to at least drive the plate-shaped PET detection assembly to move and position relative to the base along the longitudinal direction and drive the plate-shaped PET detection assembly to rotate and position relative to the base, the plate-shaped PET detection assembly comprises a first PET detection plate and a second PET detection plate which are oppositely and parallelly arranged, and the first PET detection plate and the second PET detection plate are arranged to move and position along the directions towards and away from each other so that the distance between the first PET detection plate and the second PET detection plate can be adjusted;

and the data processing device is electrically connected with the annular PET detection device and the plate-shaped PET detection device simultaneously.

2. The PET imaging apparatus of claim 1, further comprising a second lifting mechanism having one end fixed in the base and the other end fixedly connected to the bed plate, the second lifting mechanism comprising a vertical lifting section fixed in the base in a vertical direction of the base, the vertical lifting section being configured to drive the bed plate to move and position in a longitudinal direction relative to the base.

3. The PET imaging apparatus of claim 2, wherein the second lift mechanism further comprises a horizontal rotation section disposed at a top of the vertical lift section and fixedly connected with the couch board, wherein the horizontal rotation section is disposed to enable the couch board to rotate in a horizontal direction with respect to the base.

4. The PET imaging apparatus of claim 2, further comprising an annular mesh structure connected to a bottom surface of the bed plate and in communication with the placement through hole, the annular mesh structure configured to be nestable within the circular detection zone, wherein a circular viewing zone is formed within the annular mesh structure, the circular viewing zone coaxial with the placement through hole.

5. The PET imaging apparatus according to claim 4, wherein a through groove for the protrusion of the plate-shaped PET detecting member is formed on the top surface of the bed plate along the other side in the length direction thereof, the PET imaging apparatus further comprising a cover plate slidably connected to the bed plate for covering the through groove.

6. The PET imaging device according to any one of claims 1 to 5, wherein the first lifting mechanism includes: a guide slide rail fixed in the base along the transverse direction; the plate-shaped PET detection assembly is connected with the driving end of the longitudinal adjusting arm; wherein the first lifting mechanism is further arranged to enable the plate-shaped PET detection assembly to move in a transverse direction relative to the base through the cooperation of the longitudinal adjusting arm and the guide slide rail.

7. The PET imaging apparatus according to any one of claims 1 to 5, wherein the annular PET detection device comprises an annular detection layer, an annular signal reading layer and an annular circuit board layer which are arranged in sequence along the direction from the inner ring to the outer ring of the annular PET detection device, so that the circular detection area is formed in the annular PET detection device, and the data processing device is electrically connected with the annular circuit board layer.

8. The PET imaging apparatus according to claim 7, wherein either one of the first PET detector board and the second PET detector board includes a board-shaped detection layer, a board-shaped signal reading layer, and a board-shaped circuit board layer, which are electrically connected to the data processing device, disposed in this order in a direction away from the other one.

9. The PET imaging apparatus of claim 8, wherein the ring-shaped 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 ring-shaped 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 ring-shaped 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.

10. The PET imaging apparatus according to claim 9, 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 opposed to another of the detection units opposed thereto, the detection units in the plate-like detection layer are arranged in alignment in a lateral direction and a longitudinal direction of the plate-like detection layer, and the detection units in the first PET detection plate correspond one-to-one to the detection units in the second PET detection plate.

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