CN109171781B - Perfusion scanning image reconstruction method and device, image scanning equipment and storage medium - Google Patents
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Abstract
The embodiment of the invention discloses a perfusion scan image reconstruction method and device, image scanning equipment and a storage medium. The method comprises the following steps: acquiring perfusion scanning data and corresponding perfusion scanning parameters; determining at least one scanning inflection point representing the time point of the change of the moving direction of the scanning bed according to the perfusion scanning parameters; segmenting perfusion scanning data according to at least one scanning inflection point to obtain at least two stages of perfusion scanning data sets; and respectively carrying out image reconstruction on the concerned scanning data in the perfusion scanning data set of each stage to obtain each perfusion scanning reconstructed image. By adopting the technical scheme, the perfusion scanning data obtained by single continuous scanning is reconstructed in stages by introducing the scanning inflection point, the workflow of clinical scanning and the data processing operand during image reconstruction are simplified, and the imaging efficiency of the image scanning equipment is further improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of medical equipment, in particular to a perfusion scan image reconstruction method and device, image scanning equipment and a storage medium.
Background
Dynamic perfusion imaging refers to repeated scans of a region of interest of a patient injected with an intravenous contrast agent over a period of time to obtain a series of images of the same anatomical site over time. Medical personnel can evaluate the blood flow condition and metabolic process of different tissues in the region of interest by analyzing the obtained images changing along with time.
The prior art scanning mode for dynamic perfusion includes multiple intermittent scans and a single continuous scan. When multiple intermittent scans are carried out, the scanning process is interrupted in modes of power failure and the like when the advancing direction of the scanning bed is required to be changed in the scanning process, and the clinical scanning workflow is complex; when single continuous scanning is carried out, complex preprocessing needs to be carried out on original data obtained by scanning in the image reconstruction process to determine the time when the advancing direction of the scanning bed changes and the image construction time, and the image reconstruction mode is complex.
Disclosure of Invention
The invention provides a perfusion scanning image reconstruction method and device, an image scanning device and a storage medium, which are used for simplifying clinical scanning workflow and an image reconstruction mode and improving the imaging efficiency of the image scanning device.
In a first aspect, an embodiment of the present invention provides a perfusion scan image reconstruction method, including:
acquiring perfusion scanning data and corresponding perfusion scanning parameters;
determining at least one scanning inflection point according to the perfusion scanning parameters, wherein the scanning inflection point is a time point when the moving direction of the scanning bed changes;
segmenting the perfusion scanning data according to the at least one scanning inflection point to obtain at least two stages of perfusion scanning data sets;
and respectively carrying out image reconstruction on perfusion scanning data in each stage perfusion scanning data set to obtain each perfusion scanning reconstruction image.
In a second aspect, an embodiment of the present invention further provides a perfusion scan image reconstruction apparatus, including:
the scanning data acquisition module is used for acquiring perfusion scanning data and corresponding perfusion scanning parameters;
a scanning inflection point determining module, configured to determine at least one scanning inflection point according to the perfusion scanning parameter, where the scanning inflection point is a time point when a moving direction of the scanning bed changes;
the scanning data segmentation module is used for segmenting the perfusion scanning data according to the at least one scanning inflection point to obtain at least two stages of perfusion scanning data sets;
and the image reconstruction module is used for respectively reconstructing the perfusion scanning data in the perfusion scanning data set of each stage to obtain each perfusion scanning reconstructed image.
In a third aspect, an embodiment of the present invention further provides an image scanning apparatus, including a scanning bed and a scanning system, further including:
one or more processors;
storage means for storing one or more programs;
the one or more programs are executed by the one or more processors to cause the one or more processors to implement a perfusion scan image reconstruction method as provided by the first aspect.
In a fourth aspect, the embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements a perfusion scan image reconstruction method as provided in the first aspect.
The embodiment of the invention obtains perfusion scanning data and corresponding perfusion scanning parameters; determining at least one scanning inflection point representing the time point of the change of the moving direction of the scanning bed according to the perfusion scanning parameters; segmenting perfusion scanning data according to at least one scanning inflection point to obtain at least two stages of perfusion scanning data sets; and respectively carrying out image reconstruction on the concerned scanning data in the perfusion scanning data set of each stage to obtain each perfusion scanning reconstructed image. By adopting the technical scheme, the perfusion scanning data obtained by single continuous scanning is reconstructed in stages by introducing the scanning inflection point, the workflow of clinical scanning and the data processing operand during image reconstruction are simplified, and the imaging efficiency of the image scanning equipment is further improved.
Drawings
FIG. 1A is a flowchart of a perfusion scan image reconstruction method according to a first embodiment of the present invention;
FIG. 1B is a schematic view of a motion curve of a scanning bed according to a first embodiment of the present invention;
FIG. 2 is a flowchart of a perfusion scan image reconstruction method according to a second embodiment of the present invention;
FIG. 3 is a block diagram of a perfusion scan image reconstruction apparatus according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an image scanning apparatus according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1A is a flowchart of a perfusion scan image reconstruction method according to an embodiment of the present invention. The present embodiment is applicable to the case of image reconstruction after a single continuous scan in dynamic perfusion scan. The method may be performed by a perfusion scan image reconstruction device, which is implemented in software and/or hardware and is specifically configured in an image scanning apparatus. The image scanning equipment comprises a scanning bed and a scanning system.
A perfusion scan image reconstruction method as shown in fig. 1A, comprising:
and S110, acquiring perfusion scanning data and corresponding perfusion scanning parameters.
Wherein the perfusion scan parameters include scan protocol parameters under which the scanning system scans the patient. The perfusion scan data is raw data obtained by a single continuous dynamic perfusion scan of a patient by a scanning system according to scanning parameters. Wherein, the perfusion scan parameter may further include a moving parameter when the scanning bed moves.
And S120, determining at least one scanning inflection point according to the perfusion scanning parameters, wherein the scanning inflection point is a time point when the moving direction of the scanning bed changes.
Specifically, each time point when the moving direction of the scanning bed changes can be determined according to the scanning protocol parameters according to the scanning system, and each determined time point is taken as a scanning inflection point; and determining each time point when the moving direction of the scanning bed changes in the moving process of the scanning bed according to the moving parameters of the scanning bed, and taking each determined time point as a scanning inflection point.
The example is given by the moving interval of the scanning bed being [1560, 1720] mm, scanning twice back and forth, and the scanning bed stepping by 5mm, that is, scanning the same bed position 4 times, and the image thickness being 5 mm.
See the motion profile of the scanning bed shown in fig. 1B. Wherein, the abscissa is a sampling point and is used for representing the scanning time; and the position of the scanning bed code of the vertical coordinate is used for representing the position of the scanning bed. Correspondingly, the time point corresponding to point a in fig. 1B is a scanning start point, the time point corresponding to point E is a scanning end point, and each time point corresponding to points B, C, and D is a scanning inflection point.
S130, segmenting the perfusion scanning data according to the at least one scanning inflection point to obtain at least two stages of perfusion scanning data sets.
Referring to fig. 1B, the perfusion scan data corresponding to the "a → E" time segment obtained from a single continuous scan is segmented into 4 segments, i.e., "a → B", "B → C", "C → D", and "D → E", according to the determined scan inflection points B, C and D, to obtain an AB-stage perfusion scan dataset, a BC-stage perfusion scan dataset, a CD-stage perfusion scan dataset, and a DE-stage perfusion scan dataset.
And S140, respectively carrying out image reconstruction on perfusion scanning data in each stage perfusion scanning data set to obtain each perfusion scanning reconstructed image.
And respectively carrying out image reconstruction on perfusion scanning data contained in each stage perfusion scanning data set aiming at each stage perfusion scanning data set to obtain each perfusion scanning reconstruction image.
Illustratively, image reconstruction is performed on perfusion scan data corresponding to the respective couch position in each of the phase perfusion scan data sets, and perfusion scan reconstructed images corresponding to the respective couch positions in the phase perfusion scan data sets are obtained. Referring to fig. 1B, the perfusion scan data in the AB-stage perfusion scan data set may be image reconstructed to obtain perfusion scan reconstructed images 1-8, the perfusion scan data in the BC-stage perfusion scan data set may be image reconstructed to obtain perfusion scan reconstructed images 9-16, the perfusion scan data in the CD-stage perfusion scan data set may be image reconstructed to obtain perfusion scan reconstructed images 17-24, or the perfusion scan data in the DE-stage perfusion scan data set may be image reconstructed to obtain perfusion scan reconstructed images 25-32.
Illustratively, perfusion scan data corresponding to the same bed position in each stage perfusion scan data set is respectively obtained for image reconstruction, and perfusion scan reconstruction images corresponding to the same bed position in each stage perfusion scan data set are respectively obtained. Referring to fig. 1B, it is determined that the target bed code position is 1560mm, and correspondingly, target perfusion scan data generated by each scanning is obtained in each scanning time corresponding to an a point in the AB-stage perfusion scan data set, a scanning time corresponding to a C point in the BC-stage perfusion scan data set, a scanning time corresponding to a C point in the CD-stage perfusion scan data set, and a scanning time corresponding to an E point in the DE-stage perfusion scan data set; and respectively carrying out image reconstruction on the perfusion scan data of each target to obtain perfusion scan reconstructed images 1, 6, 17 and 32 corresponding to the position of the target couch.
The embodiment of the invention obtains perfusion scanning data and corresponding perfusion scanning parameters; determining at least one scanning inflection point representing the time point of the change of the moving direction of the scanning bed according to the perfusion scanning parameters; segmenting perfusion scanning data according to at least one scanning inflection point to obtain at least two stages of perfusion scanning data sets; and respectively carrying out image reconstruction on the concerned scanning data in the perfusion scanning data set of each stage to obtain each perfusion scanning reconstructed image. By adopting the technical scheme, the perfusion scanning data obtained by single continuous scanning is reconstructed in stages by introducing the scanning inflection point, the workflow of clinical scanning and the data processing operand during image reconstruction are simplified, and the imaging efficiency of the image scanning equipment is further improved.
Example two
Fig. 2 is a flowchart of a perfusion scan image reconstruction method according to a second embodiment of the present invention. The embodiment of the invention carries out subdivision optimization on the basis of the technical scheme of each embodiment.
Further, the perfusion scan parameter is refined to be "the perfusion scan parameter includes a moving parameter of the scanning bed moving", and correspondingly "at least one scanning inflection point is determined according to the perfusion scan parameter" to be refined to be "at least one scanning inflection point is determined according to the moving parameter of the scanning bed", so as to perfect a determination mechanism of the scanning inflection point.
The perfusion scan image reconstruction method as shown in fig. 2 includes:
s210, acquiring perfusion scanning data and corresponding perfusion scanning parameters, wherein the perfusion scanning parameters comprise moving parameters of a scanning bed.
The moving parameters of the scanning bed comprise at least one of a position of the bed, a moving direction, an initial moving time, a target moving distance and a moving speed.
The bed position of the scanning bed can be detected and determined in real time or at regular time according to a rotary encoder arranged on a rotating wheel of the scanning bed; the moving direction of the scanning bed can be determined according to the driving direction of a driving device for controlling the scanning bed to move; the position and the moving direction of the bed code of the scanning bed can also be acquired in real time or at regular time according to a camera arranged on a perfusion scanning room or perfusion scanning equipment, and the perfusion scanning equipment analyzes and determines the acquired image; the moving time of the scanning bed can be counted according to a timing device installed on the perfusion scanning equipment; the moving speed of the scanning bed can be determined according to the detection of a speed sensor arranged on the scanning bed; the target movement distance may be set by the staff member or calculated and determined by the perfusion scanning device according to other relevant parameters. Specifically, the maximum bed code moving range may be determined according to a difference between the maximum bed code position and the minimum bed code position, and the maximum bed code moving range may be used as the target moving distance.
S220, determining at least one scanning inflection point according to the moving parameters of the scanning bed, wherein the scanning inflection point is a time point when the moving direction of the scanning bed changes.
Illustratively, determining at least one scan inflection point according to the motion parameter of the scan bed may include: and determining a scanning inflection point according to the position of the bed code. Specifically, when the scanning bed is detected to move normally and the scanning is repeated at the current bed position, the scanning time of the current bed position during the second scanning is taken as a scanning inflection point; or when the scanning bed is detected to normally move and move to the target bed position, the scanning time of the target bed position during the second scanning is used as a scanning inflection point, and the target bed position is set to be the maximum bed position or the minimum bed position.
Illustratively, determining at least one scan inflection point according to the motion parameter of the scan bed may include: and determining a scanning inflection point according to the moving direction. Specifically, when the change of the moving direction is detected, the scanning time corresponding to the change of the moving direction is used as the scanning inflection point.
Illustratively, determining at least one scan inflection point according to the motion parameter of the scan bed may include: and determining a scanning inflection point according to the initial moving time, the moving speed, the target moving distance and the moving duration. Specifically, the target movement duration of the scanning bed is calculated according to the moving speed and the target moving distance; and acquiring the current scanning time as a scanning inflection point when the accumulated moving time from the initial moving time reaches the target moving time.
Illustratively, determining at least one scan inflection point according to the motion parameter of the scan bed may include: and determining a scanning inflection point according to the initial moving time, the moving speed, the target moving time and the moving distance. Specifically, a target moving distance is determined according to the moving speed and the target moving duration; and when the accumulated moving distance from the initial moving time reaches the target moving distance, acquiring the current scanning time as a scanning inflection point.
S230, segmenting the perfusion scanning data according to the at least one scanning inflection point to obtain at least two stages of perfusion scanning data sets.
And S240, respectively carrying out image reconstruction on perfusion scanning data in each stage perfusion scanning data set to obtain each perfusion scanning reconstructed image.
The embodiment of the invention perfects the determination mechanism of the scanning inflection point by determining at least one scanning inflection point according to the moving parameters of the scanning bed, simplifies the determination mode of the scanning inflection point, saves the determination time of the scanning inflection point, further reduces the data processing operand during image reconstruction and improves the imaging efficiency of the image scanning equipment.
On the basis of the technical solutions of the above embodiments, further, the method further includes: and combining the perfusion scanning reconstruction images corresponding to the same bed code position to obtain a time change atlas so that medical personnel can judge the physical condition of the patient by looking up the time change atlas corresponding to the region of interest.
Further, the method further comprises: and (4) reconstructing the reconstructed image corresponding to the perfusion scanning data set of each stage to obtain a reconstructed three-dimensional image of each stage so as to construct a three-dimensional image and facilitate the examination of medical staff.
EXAMPLE III
Fig. 3 is a structural diagram of a perfusion scan image reconstruction apparatus according to a third embodiment of the present invention. The embodiment of the invention can be suitable for the situation of image reconstruction after single continuous scanning is adopted in dynamic perfusion scanning. The device is executed by software and/or hardware and is specifically configured in the image scanning equipment. The perfusion scan image reconstruction apparatus shown in fig. 3 includes: a scan data acquisition module 310, a scan knee determination module 320, a scan data segmentation module 330, and an image reconstruction module 340.
The scanning data obtaining module 310 is configured to obtain perfusion scanning data and corresponding perfusion scanning parameters;
a scanning inflection point determining module 320, configured to determine at least one scanning inflection point according to the perfusion scanning parameter, where the scanning inflection point is a time point when a moving direction of the scanning bed changes;
a scan data segmentation module 330, configured to segment the perfusion scan data according to the at least one scan inflection point to obtain at least two stage perfusion scan data sets;
an image reconstruction module 340, configured to perform image reconstruction on the perfusion scan data in each of the phase perfusion scan data sets, respectively, to obtain each perfusion scan reconstructed image.
In the embodiment of the invention, the perfusion scanning data and the corresponding perfusion scanning parameters are acquired by the scanning data acquisition module; determining at least one scanning inflection point representing the time point of the change of the moving direction of the scanning bed according to the perfusion scanning parameters by a scanning inflection point determining module; segmenting perfusion scanning data according to at least one scanning inflection point through a scanning data segmentation module to obtain perfusion scanning data sets of at least two stages; and respectively carrying out image reconstruction on the concerned scanning data in the perfusion scanning data set of each stage through an image reconstruction module to obtain each perfusion scanning reconstructed image. By adopting the technical scheme, the perfusion scanning data obtained by single continuous scanning is reconstructed in stages by introducing the scanning inflection point, the workflow of clinical scanning and the data processing operand during image reconstruction are simplified, and the imaging efficiency of the image scanning equipment is further improved.
Further, the perfusion scan parameter includes a movement parameter of the scanning bed, and the movement parameter includes at least one of a position of the scanning bed, a movement direction, a start movement time, a movement duration, a target movement distance, and a movement speed.
Further, the scan knee determination module 320 includes:
the first determining unit is used for determining a scanning inflection point according to the position of the bed;
a second determining unit, configured to determine a scanning inflection point according to the moving direction;
and the third determining unit is used for determining a scanning inflection point according to the starting moving time, the moving speed, the target moving distance and the moving duration.
Further, the first determining unit is specifically configured to:
and when the scanning bed is detected to normally move and the scanning is repeated at the current bed position, taking the scanning time of the current bed position in the second scanning as a scanning inflection point.
Further, the second determining unit is specifically configured to:
and when the change of the moving direction is detected, taking the corresponding scanning time when the moving direction is changed as a scanning inflection point.
Further, the third determining unit is specifically configured to:
calculating the target moving duration of the scanning bed according to the moving speed and the target moving distance;
and acquiring the current scanning time as a scanning inflection point when the accumulated moving time from the initial moving time reaches the target moving time.
Further, the image reconstruction module 340 includes:
the longitudinal reconstruction unit is used for respectively carrying out image reconstruction on perfusion scanning data corresponding to the positions of the bed codes in each stage perfusion scanning data set so as to respectively obtain perfusion scanning reconstruction images corresponding to the positions of the bed codes in the stage perfusion scanning data set;
and the transverse reconstruction unit is used for respectively acquiring perfusion scan data corresponding to the same bed position in each stage perfusion scan data set to reconstruct images, and respectively acquiring perfusion scan reconstruction images corresponding to the same bed position in each stage perfusion scan data set.
The perfusion scan image reconstruction device can execute the perfusion scan image reconstruction method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects for executing the perfusion scan image reconstruction method.
Example four
Fig. 4 is a schematic structural diagram of an image scanning apparatus according to a fourth embodiment of the present invention, including a scanning bed 410 and a scanning system 420, the apparatus further including:
one or more processors 430;
Further, the apparatus may further include: the scanning bed detection device 450 is used for acquiring the movement parameters of the scanning bed and adding the movement parameters to the perfusion scanning parameters.
Wherein the scanning bed detection device 450 includes at least one of a camera, a rotary encoder, a scanning bed drive, a technical device, and a speed sensor.
In fig. 4, a processor 430 is taken as an example, the scanning bed detection device 450 in the image scanning apparatus may be connected to the processor 430 and the storage device 440 through a bus or other means, the scanning system 420 may be connected to the processor 430 and the storage device 440 through a bus or other means, and the processor 430 and the storage device 440 are also connected through a bus or other means, which is taken as an example in fig. 4.
In this embodiment, the processor 430 in the image scanning apparatus can obtain perfusion scan data and corresponding perfusion scan parameters generated by the scanning system 420 during scanning; perfusion scanning parameters formed by the movement parameters acquired by the scanning bed detection device 450 can also be acquired; at least one scanning inflection point representing the change of the moving direction of the scanning bed can be determined according to the perfusion scanning parameters; the perfusion scan data obtained from the scanning system 420 may also be segmented according to at least one scanning inflection point to obtain at least two stages of perfusion scan data sets; the perfusion scanning data in each stage perfusion scanning data set can be respectively subjected to image reconstruction to obtain each perfusion scanning reconstruction image; each perfusion scan reconstructed image may also be stored in the storage device 440.
The storage device 440 of the image scanning apparatus, which is a computer-readable storage medium, can be used to store one or more programs, such as software programs, computer-executable programs, and modules, corresponding to the program instructions/modules of the perfusion scan image reconstruction method according to the embodiments of the present invention (for example, the scan data acquisition module 310, the scan inflection point determination module 320, the scan data segmentation module 330, and the image reconstruction module 340 shown in fig. 3). The processor 430 executes various functional applications and data processing of the image scanning apparatus by executing software programs, instructions and modules stored in the storage device 440, so as to implement the perfusion scan image reconstruction method in the above-described method embodiment.
The storage device 440 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data or the like (such as the scan inflection point, the phase perfusion scan data set, and the perfusion scan reconstructed image in the above-described embodiments). Further, the storage 440 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, storage 440 may further include memory located remotely from processor 430, which may be connected to a server over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
EXAMPLE five
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a perfusion scan image reconstruction apparatus, implements a perfusion scan image reconstruction method provided in an embodiment of the present invention, and the method includes: acquiring perfusion scanning data and corresponding perfusion scanning parameters; determining at least one scanning inflection point according to the perfusion scanning parameters, wherein the scanning inflection point is a time point when the moving direction of the scanning bed changes; segmenting the perfusion scanning data according to the at least one scanning inflection point to obtain at least two stages of perfusion scanning data sets; and respectively carrying out image reconstruction on perfusion scanning data in each stage perfusion scanning data set to obtain each perfusion scanning reconstruction image.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method of perfusion scan image reconstruction, comprising:
acquiring perfusion scanning data and corresponding perfusion scanning parameters;
determining at least one scanning inflection point according to the perfusion scanning parameters, wherein the scanning inflection point is a time point when the moving direction of the scanning bed changes;
segmenting the perfusion scanning data according to the at least one scanning inflection point to obtain at least two stages of perfusion scanning data sets;
and respectively carrying out image reconstruction on perfusion scanning data in each stage perfusion scanning data set to obtain each perfusion scanning reconstruction image.
2. The method of claim 1, wherein the perfusion scan parameters comprise movement parameters of a scanning couch, the movement parameters comprising at least one of a couch position, a movement direction, a start movement time, a movement duration, a target movement distance, and a movement speed.
3. The method of claim 2, wherein said determining at least one scan inflection point as a function of said perfusion scan parameter comprises at least one of:
determining a scanning inflection point according to the position of the bed;
determining a scanning inflection point according to the moving direction;
and determining a scanning inflection point according to the initial moving time, the moving speed, the target moving distance and the moving duration.
4. The method of claim 3, wherein determining a scan inflection point according to the couch location comprises:
and when the scanning bed is detected to normally move and the scanning is repeated at the current bed position, taking the scanning time of the current bed position in the second scanning as a scanning inflection point.
5. The method of claim 3, wherein determining a scan inflection point based on the moving direction comprises:
and when the change of the moving direction is detected, taking the corresponding scanning time when the moving direction is changed as a scanning inflection point.
6. The method of claim 3, wherein determining a scan inflection point based on the start moving time, the moving speed, the target moving distance, and the moving duration comprises:
calculating the target moving duration of the scanning bed according to the moving speed and the target moving distance;
and acquiring the current scanning time as a scanning inflection point when the accumulated moving time from the initial moving time reaches the target moving time.
7. The method according to any one of claims 2-6, wherein the separately performing image reconstruction of the perfusion scan data in each of the phase perfusion scan data sets to obtain respective perfusion scan reconstructed images comprises:
respectively carrying out image reconstruction on perfusion scanning data corresponding to each bed position in each stage perfusion scanning data set to respectively obtain perfusion scanning reconstructed images corresponding to each bed position in the stage perfusion scanning data set; or the like, or, alternatively,
and respectively acquiring perfusion scanning data corresponding to the same bed position in each stage perfusion scanning data set to reconstruct images, and respectively acquiring perfusion scanning reconstruction images corresponding to the same bed position in each stage perfusion scanning data set.
8. A perfusion scan image reconstruction apparatus, comprising:
the scanning data acquisition module is used for acquiring perfusion scanning data and corresponding perfusion scanning parameters;
a scanning inflection point determining module, configured to determine at least one scanning inflection point according to the perfusion scanning parameter, where the scanning inflection point is a time point when a moving direction of the scanning bed changes;
the scanning data segmentation module is used for segmenting the perfusion scanning data according to the at least one scanning inflection point to obtain at least two stages of perfusion scanning data sets;
and the image reconstruction module is used for respectively reconstructing the perfusion scanning data in the perfusion scanning data set of each stage to obtain each perfusion scanning reconstructed image.
9. An image scanning apparatus, comprising a scanning bed and a scanning system, further comprising:
one or more processors;
storage means for storing one or more programs;
the one or more programs are executable by the one or more processors to cause the one or more processors to perform operations comprising:
acquiring perfusion scanning data and corresponding perfusion scanning parameters;
determining at least one scanning inflection point according to the perfusion scanning parameters, wherein the scanning inflection point is a time point when the moving direction of the scanning bed changes;
segmenting the perfusion scanning data according to the at least one scanning inflection point to obtain at least two stages of perfusion scanning data sets;
and respectively carrying out image reconstruction on perfusion scanning data in each stage perfusion scanning data set to obtain each perfusion scanning reconstruction image.
10. A computer-readable storage medium, on which a computer program is stored, the program, when executed by a processor, performing operations comprising:
acquiring perfusion scanning data and corresponding perfusion scanning parameters;
determining at least one scanning inflection point according to the perfusion scanning parameters, wherein the scanning inflection point is a time point when the moving direction of the scanning bed changes;
segmenting the perfusion scanning data according to the at least one scanning inflection point to obtain at least two stages of perfusion scanning data sets;
and respectively carrying out image reconstruction on perfusion scanning data in each stage perfusion scanning data set to obtain each perfusion scanning reconstruction image.
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