CN106377275B - A kind of spiral scanning method and device - Google Patents
A kind of spiral scanning method and device Download PDFInfo
- Publication number
- CN106377275B CN106377275B CN201610872595.9A CN201610872595A CN106377275B CN 106377275 B CN106377275 B CN 106377275B CN 201610872595 A CN201610872595 A CN 201610872595A CN 106377275 B CN106377275 B CN 106377275B
- Authority
- CN
- China
- Prior art keywords
- scanning
- helical scanning
- current
- parameter
- helical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/027—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis characterised by the use of a particular data acquisition trajectory, e.g. helical or spiral
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/54—Control of apparatus or devices for radiation diagnosis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/54—Control of apparatus or devices for radiation diagnosis
- A61B6/542—Control of apparatus or devices for radiation diagnosis involving control of exposure
Abstract
The present invention provides a kind of spiral scanning method and device, the technical idea of both schemes is consistent, wherein method comprises determining that the scanning area of current helical scanning and the scanning area overlapping region between the two of last helical scanning；Start current helical scanning, control bulb is in the overlapping region not divergent-ray, and only in the Non-overlapping Domain divergent-ray of the current helical scanning, scanning obtains the life data of current helical scanning；The life data that the life data of the current helical scanning and the last helical scanning obtain are subjected to data fusion.Technical solution provided by the invention, under the scene for repeating helical scanning, the scanning of certain area can be saved, reduce the radiation to scanned person to a certain extent, most importantly, the technical solution ensure that data continuity by way of data fusion, build for current helical scanning as providing partial data.
Description
Technical field
The present invention relates to the field of medical instrument technology, more particularly to a kind of computerized tomography spiral scanning method and dress
It sets.
Background technique
During computed tomography (Computed Tomography, CT), x-ray bulb is continuously revolved around rack
Turn exposure, exposure examination couch synchronous uniform velocity movement simultaneously, detector acquires data.Due to scanning track helically line, therefore claim spiral shell
Rotation scanning, also known as volume or volume scan.
In clinical setting, doctor often encounters following situation when using helical scanning:
After a helical scanning, discovery scanning area falls short of, and has swept short (not sweeping enough), or, certain part occurs in discovery
Image it is undesirable, then doctor needs to replan single pass, and then the end position of last scan continues to scan on, Huo Zhechong
Newly scan undesirable region.Finally, the imaging results of complete scanning area are obtained by multiple helical scanning.
Since helical scanning each time generates certain radiation to scanned person to meeting, how to guarantee imaging demand
In the case where, radiation of the helical scanning to scanned person is reduced, this has become the problem that clinical medicine is more paid close attention to.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of spiral scanning method and devices, when spiral is swept again,
The case where according to actual scanning demand control bulb emitting radiation, can be reduced pair in the case where guaranteeing to meet imaging demand
The radiation of scanned person.
A kind of spiral scanning method is provided in the application first aspect, which comprises
The overlay region of the scanning area of the scanning area and last helical scanning that determine current helical scanning between the two
Domain；
Start current helical scanning, control bulb is only swept in the current spiral in the overlapping region not divergent-ray
The Non-overlapping Domain divergent-ray retouched, scanning obtain the life data of current helical scanning；
The life data that the life data of the current helical scanning are obtained with the last helical scanning are carried out data to melt
It closes.
Optionally, the scanning area of the current helical scanning of determination and upper primary helical scanning scanning area between the two
Overlapping region after, the method also includes:
Last helical scanning is recorded in the actual scanning parameter of the overlapping region marginal position；
Then control bulb is in the overlapping region not divergent-ray in the following manner, only in the current helical scanning
Non-overlapping Domain divergent-ray, scanning obtain the life data of current helical scanning, and which includes:
According to the last helical scanning of record the overlapping region marginal position actual scanning parameter adjustment described in
The sweep parameter of current helical scanning, control helical scanning equipment starts to execute current spiral according to sweep parameter adjusted sweeps
It retouches, to control bulb in the overlapping region not divergent-ray, is only penetrated in the Non-overlapping Domain of the current helical scanning
Line, scanning obtain the life data of current helical scanning.
Optionally, the actual scanning parameter includes:
Z axis position and unwrapping wire angle.
Optionally, the last helical scanning according to record is joined in the actual scanning of the overlapping region marginal position
Number adjusts the sweep parameter of the current helical scanning, comprising:
It adjusts the z-axis position in the sweep parameter of the current helical scanning and is equal to the last helical scanning of record in institute
State z-axis position in the actual scanning parameter of overlapping region marginal position and default redundant position and value or difference；
Last helical scanning of the unwrapping wire angle equal to record adjusted in the sweep parameter of the current helical scanning exists
Unwrapping wire angle in the actual scanning parameter of the overlapping region marginal position and default redundancy angle and be worth or difference.
Optionally, the life data that the life data by the current helical scanning and the last helical scanning obtain
Carry out data fusion, comprising:
By way of matching the actual scanning parameter of helical scanning lap position terminal position twice, data are determined
Position is merged, the life number obtained based on the life data of current helical scanning described in the fusion position and the last helical scanning
According to progress data merging.
A kind of helical scanning device is provided in second aspect of the present invention, described device includes:
Overlapping region determining module, for determining the scanning area of current helical scanning and the scanning of last helical scanning
The overlapping region of region between the two；
Scan control module, for starting current helical scanning, control bulb is in the overlapping region not divergent-ray, only
In the Non-overlapping Domain divergent-ray of the current helical scanning, scanning obtains the life data of current helical scanning；
Data fusion module, for obtain the life data of the current helical scanning and the last helical scanning
Raw data carry out data fusion.
Optionally, described device further include:
Logging modle, for recording last helical scanning in the actual scanning parameter of the overlapping region marginal position；
The then scan control module, comprising:
Sweep parameter adjusting submodule, for the last helical scanning according to record in the overlapping region marginal position
Actual scanning parameter adjust the sweep parameter of the current helical scanning；
Helical scanning control submodule, for control helical scanning equipment according to sweep parameter adjusted start execute work as
Preceding helical scanning, to control bulb in the overlapping region not divergent-ray, only in the non-overlap area of the current helical scanning
Domain divergent-ray, scanning obtain the life data of current helical scanning.
Optionally, the actual scanning parameter includes:
Z axis position and unwrapping wire angle.
Optionally, the sweep parameter adjusting submodule, comprising:
The first adjustment submodule, the z-axis position in sweep parameter for adjusting the current helical scanning are equal to record
Z-axis position of the last helical scanning in the actual scanning parameter of the overlapping region marginal position and default redundant position
And value or difference；
Second adjustment submodule, the unwrapping wire angle in sweep parameter for adjusting the current helical scanning are equal to record
Unwrapping wire angle of the last helical scanning in the actual scanning parameter of the overlapping region marginal position and default redundancy angle
Spend and value or difference.
Optionally, the data fusion module, comprising:
Data fusion submodule, for the actual scanning by the matching helical scanning lap position terminal position twice
The mode of parameter determines data fusion position, the life data and described upper one based on current helical scanning described in the fusion position
The life data that secondary helical scanning obtains carry out data merging.
Compared with prior art, it is the advantages of technical solution provided by the invention:
Using technical solution provided by the invention, helical scanning equipment is not that helical scanning each time is considered as independence
Scanning first determine that the scanning area of current helical scanning is swept with last time spiral but before executing current helical scanning
The overlapping region of the scanning area retouched between the two；If determining certain overlapping region, then show this helical scanning twice
Belong to association scanning or multiple scanning；Then restart current helical scanning, control bulb does not emit in the overlapping region
Ray, only in the Non-overlapping Domain divergent-ray of the current helical scanning, scanning obtains the life data of current helical scanning；By
It in overlapping region in upper primary helical scanning, has scanned to have obtained corresponding data, therefore, for weight in this scanning
Folded region not unwrapping wire, saves certain scanning dose；Since the imaging of some position needs the position forward-backward correlation position pair
The life data answered, and the scanning of overlapping region is eliminated in current helical scanning, lack the corresponding raw data in overlapping region, because
This, also needs the life data for obtaining the life data of current helical scanning and last helical scanning to carry out data in this application
Fusion, to provide complete raw data for imaging.
Technical solution provided by the invention can save the scanning of certain area, In under the scene for repeating helical scanning
Reduce the radiation to scanned person to a certain extent, it is most important that, which guarantees number by way of data fusion
According to continuity, build for current helical scanning as providing partial data.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of helical scanning actual scene provided by the invention；
Fig. 2 is a kind of flow chart of spiral scanning method provided by the invention；
Fig. 3 is the schematic diagram provided by the invention for repeating helical scanning scene；
Fig. 4 is the schematic diagram of data fusion scene provided by the invention；
Fig. 5 is a kind of structure chart of helical scanning device provided by the invention；
Fig. 6 is a kind of CT equipment structure chart provided by the invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below first to of the invention main
Technical idea is explained.
In the prior art, helical scanning equipment all regards helical scanning each time as primary independent helical scanning,
Helical scanning equipment directly will execute helical scanning according to sweep parameter, according to primary when receiving helical scanning instruction
The life data that helical scanning obtains can be completed to build picture.Due to when building picture, it is necessary to depend on the adjacent anteroposterior position in a position
The scan data set can be completed to build picture to the position.Referring to Fig. 1, Fig. 1 is helical scanning actual field provided by the invention
Scape exemplary diagram, in Fig. 1, a indicates that bulb, b indicate radiation exposure region, and d indicates scanning bed, and c indicates that a helical scanning is complete
Portion unwrapping wire region, comprising: prescan region e, build as scanning area f (scanning area that doctor needs to build picture) and, prescan
Region g.During practical helical scanning, the scanning of the area size and helical scanning of prescan region e and prescan region g
Relating to parameters.
For example, scanning bed length is 2m, scanning bed bed code is 0mm- according to millimeter spaced markings from the head of a bed to bed
2000mm；If doctor wants the region for scanning range " 100mm-200mm " and builds picture, then helical scanning equipment is actual sweeps
Retouch the region that range may be " 80mm-220mm ", wherein " 80mm-100mm " and " 200mm-220mm " is prescan area
Domain.Wherein, the scan data of prescan region " 80mm-100mm " is primarily to building as providing data base to the position 100mm
Plinth, similar, the scan data of prescan region " 200mm-220mm " is primarily to building as providing number to the position 200mm
According to basis.
The present inventor analyzes the above-mentioned scan characteristic of existing helical scanning, and the scene for repeating helical scanning is combined to need
It asks, proposes the technical solution of of the invention a kind of spiral scanning method and device, the thought of the technical solution is will to repeat spiral shell
Helical scanning twice under rotation scanning scene associates, and is no longer merely to independently execute helical scanning twice, but determine
The overlapping region of helical scanning twice saves the by way of controlling second of helical scanning and not scanning for overlapping region
The scanning dose of secondary spiral scanning, to reduce radiation；Since second of helical scanning is not swept actually for overlapping region
It retouches, also just there is no corresponding data, but the scan data of the overlapping region is still required in the image reconstruction of target position, and for the first time
Helical scanning has scanned to obtain the life data of the overlapping region, therefore, the life number for further obtaining first time helical scanning
Data fusion is carried out according to the life data obtained with second of helical scanning, it will be able to obtain all data.
Technical solution provided by the invention can save the scanning of certain area, In under the scene for repeating helical scanning
Reduce the radiation to scanned person to a certain extent, it is most important that, which guarantees number by way of data fusion
According to continuity, continued for after as providing partial data.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Embodiment is described in detail.
Referring to Fig. 2, providing a kind of flow chart of spiral scanning method for the present invention, this method can be adapted for any one
In the equipment of kind support helical scanning, 201- step 203 that the method comprising the steps of as shown in Figure 2.
Below before introducing each step of this method, first the application scenarios of this method are illustrated.
In clinical setting, doctor often encounters following situation when using helical scanning:
After a helical scanning, picture is built using the data that scanning obtains, it is inadequate that doctor observes image discovery scanning area
It is long, sweep short (not sweeping enough), or, discovery occurs, some portion of image is undesirable, then doctor needs to replan single pass, connects
The end position of last scan continue to scan on, or undesirable region is rescaned, further according to the data after multiple scanning
Picture is built, sometimes, for the image of twice sweep same position, it is also possible to can further progress image procossing.
Helical scanning equipment executes side shown in Fig. 2 in the helical scanning instruction for receiving user (such as: doctor) triggering
Method, next, (step 201- step 203) is introduced each step for including to this method.
Step 201: the scanning area of the scanning area and last helical scanning that determine current helical scanning is between the two
Overlapping region.
When helical scanning equipment receives helical scanning instruction, scanning area can be got, scanning area here is
Refer to the region of helical scanning equipment actual needs scanning, has not only included prescan region but also included building as scanning area；Helical scanning
Equipment needs to record the scanning situation of helical scanning each time, at least needs writing scan region.
Helical scanning equipment receive a helical scanning instruction when, be not execute this helical scanning at once, and
It is first to judge whether there is the life data scanned, that is, before executing this helical scanning, helical scanning equipment needs to judge
Whether have been completed a helical scanning, essence be in order to judge whether current helical scanning belongs to multiple scanning, if
It is whether the scanning area of the scanning area and current helical scanning that then further judge last helical scanning deposits between the two
In overlapping region, if so, being carried out step 201 determines the overlapping region.
Above-mentioned realization process is illustrated below with reference to Fig. 3.
In Fig. 3, a indicates last helical scanning (helical scanning completed), and b is that current helical scanning (is not held
Capable helical scanning), helical scanning equipment needs first to judge whether complete when receiving the helical scanning instruction about b
At a helical scanning, when judging to have been completed a, then whether the scanning area for continuing the scanning area for judging b and a is deposited
Determine the overlapping region when discovery is implicitly present in overlapping region in overlapping region (in such as Fig. 3, the part of the region c).
Step 202: starting current helical scanning, control bulb is only worked as described in the overlapping region not divergent-ray
The Non-overlapping Domain divergent-ray of preceding helical scanning, scanning obtain the life data of current helical scanning.
After determining overlapping region, start current helical scanning, and during controlling current helical scanning, bulb exists
Overlapping region part not divergent-ray, that is, lap over region is omitted without scanning, and only for Non-overlapping Domain divergent-ray
It is scanned.
As shown in figure 3, the helical scanning of starting b, but bulb is controlled in overlapping region not unwrapping wire, after overlapping region
Other regions start unwrapping wire and are scanned, the corresponding raw data in other regions except the overlapping region that is removed.
Step 203: the life data that the life data of the current helical scanning and the last helical scanning are obtained into
Row data fusion.
Since, the purpose of multiple scanning is exactly corresponding raw data of all areas in order to obtain, so according to raw data into
Row builds picture, but what is obtained by step 202 is only the corresponding raw data in partial region, not the life data of complete area, then without
Method is built as purpose.Therefore, it is executing the step after 202, it is also necessary to execute step 203, by way of data fusion, will work as
The life data of preceding helical scanning and the life data of last helical scanning carry out data fusion, partial data are obtained, according to fusion
Partial data afterwards can successfully build picture.
On how to control bulb in the overlapping region not divergent-ray, only in the non-overlap of the current helical scanning
The characteristics of field emission ray, inventor analyzes helical scanning is that during the scanning process, scanning bed is that direction continues according to schedule
Movement, and bulb is always maintained at continuous unwrapping wire state.In addition, also needing to consider that the data fusion after scanning is asked in the present invention
Topic, therefore, in order to control the effective unwrapping wire of bulb, the present invention also provides following preferred embodiments by inventor.
Last helical scanning is recorded in the actual scanning parameter of the overlapping region marginal position；
According to the last helical scanning of record the overlapping region marginal position actual scanning parameter, described in adjustment
The sweep parameter of current helical scanning, control helical scanning equipment starts to execute current spiral according to sweep parameter adjusted sweeps
It retouches, to control bulb in the overlapping region not divergent-ray, is only penetrated in the Non-overlapping Domain of the current helical scanning
Line, scanning obtain the life data of current helical scanning.
When realizing, the actual scanning parameter is included at least: Z axis position, unwrapping wire angle.
Wherein, actual scanning parameter of the last helical scanning according to record in the overlapping region marginal position
The sweep parameter for adjusting the current helical scanning may include:
It adjusts the z-axis position in the sweep parameter of the current helical scanning and is equal to the last helical scanning of record in institute
State the z-axis position in the actual scanning parameter of overlapping region marginal position；
Last helical scanning of the unwrapping wire angle equal to record adjusted in the sweep parameter of the current helical scanning exists
Unwrapping wire angle in the actual scanning parameter of the overlapping region marginal position.
But inventor considers practical helical scanning process, it is possible that since machine error causes data fusion inaccurate
True problem additionally provides following scheme for adjustment mode to effectively solve the problems, such as this.That is, described according to the upper of record
Helical scanning adjusts the scanning ginseng of the current helical scanning in the actual scanning parameter of the overlapping region marginal position
It counts, may include:
It adjusts the z-axis position in the sweep parameter of the current helical scanning and is equal to the last helical scanning of record in institute
State z-axis position in the actual scanning parameter of overlapping region marginal position and default redundant position and value or difference；
Last helical scanning of the unwrapping wire angle equal to record adjusted in the sweep parameter of the current helical scanning exists
Unwrapping wire angle in the actual scanning parameter of the overlapping region marginal position and default redundancy angle and be worth or difference.
What needs to be explained here is that then adjusting the current spiral when the direction of helical scanning twice is into bed direction
Z-axis position in the sweep parameter of scanning is equal to reality of the last helical scanning in the overlapping region marginal position of record
The difference of z-axis position and default redundant position in sweep parameter；Adjust putting in the sweep parameter of the current helical scanning
Line angle degree is equal to pay-out angle of the last helical scanning of record in the actual scanning parameter of the overlapping region marginal position
The difference of degree and default redundancy angle.
And when the direction of helical scanning twice is to move back a bed direction, then in the sweep parameter that adjusts the current helical scanning
Z-axis position be equal to z-axis of the last helical scanning in the actual scanning parameter of the overlapping region marginal position of record
Position and default redundant position and value；The unwrapping wire angle adjusted in the sweep parameter of the current helical scanning is equal to record
Unwrapping wire angle of the last helical scanning in the actual scanning parameter of the overlapping region marginal position and default redundancy angle
And value.
For example: in the terminal position of a upper helical scanning and the overlapping region of current helical scanning, a upper spiral is swept
Retouch the actual scanning parameter in the overlapping region marginal position include: Z axis position be 200mm, angle is 40 degree, is swept into bed
It retouches, preset position amount of redundancy is 1mm, and preset angle amount of redundancy is 1 degree, then, adjust the scanning ginseng of current helical scanning
Number includes that Z axis position is 199mm (200-1=199mm), 39 degree of angle (40-1=39), is scanned into bed.
Position is scanned by the redundancy that this redundancy scheme makes helical scanning twice maintain minimum a part
It sets, in this way, can either effectively avoid the problem that machine error causes data not merge accurately, and can effectively subtract
Small scanning dose.
Further, the life number that the life data by the current helical scanning and the last helical scanning obtain
According to data fusion is carried out, may include:
By way of matching the actual scanning parameter of helical scanning lap position terminal position twice, data are determined
Position is merged, the life number obtained based on the life data of current helical scanning described in the fusion position and the last helical scanning
According to progress data merging.
It is scanning scene with Fig. 3, above-mentioned Data Fusion is illustrated below with reference to Fig. 4.
In Fig. 4, left side black thin item is the life data that a helical scanning (last helical scanning) obtains, and right side is black
Color thick lines are b helical scanning (current helical scanning) obtained life data, then according to a helical scanning with b helical scanning weight
The actual scanning parameter of folded position terminal position, so that it may which the life data for respectively obtaining a, b helical scanning twice carry out data
Fusion, for data fusion it can be appreciated that data merge, as shown in Figure 4, the scanning direction of twice sweep is C, will twice
It is A that obtained life data, which are scanned, in bed code (Z axis position), and angle is that the place of B merges.
It can be seen from above-described embodiment that repeating helical scanning using spiral scanning method provided by the invention
Under scene, the scanning of certain area can be saved, reduces the radiation to scanned person to a certain extent, it is most important that, it should
Technical solution guarantees data continuity by way of data fusion, builds for current helical scanning as providing partial data.
It corresponds to the above method, the present invention also provides a kind of helical scanning devices, below with reference to Fig. 5 to the device
It is explained.
It is a kind of structure chart of helical scanning device provided by the invention referring to Fig. 5, Fig. 5, as shown in figure 5, the device packet
Include: overlapping region determining module 501, scan control module 502 and, data fusion module 503, below based on the device
Working principle is illustrated the function and connection relationship of its inside modules.
Overlapping region determining module 501, for determining the scanning area and last helical scanning of current helical scanning
The overlapping region of scanning area between the two；
Scan control module 502, for starting current helical scanning, control bulb does not emit in the overlapping region to be penetrated
Line, only in the Non-overlapping Domain divergent-ray of the current helical scanning, scanning obtains the life data of current helical scanning；
Data fusion module 503, for obtaining the life data of the current helical scanning and the last helical scanning
The life data arrived carry out data fusion.
When realizing, described device can also include:
Logging modle, for recording last helical scanning in the actual scanning parameter of the overlapping region marginal position；
The then scan control module, comprising:
Sweep parameter adjusting submodule, for the last helical scanning according to record in the overlapping region marginal position
Actual scanning parameter adjust the sweep parameter of the current helical scanning；
Helical scanning control submodule, for control helical scanning equipment according to sweep parameter adjusted start execute work as
Preceding helical scanning, to control bulb in the overlapping region not divergent-ray, only in the non-overlap area of the current helical scanning
Domain divergent-ray, scanning obtain the life data of current helical scanning.
When realizing, the actual scanning parameter includes:
Z axis position and unwrapping wire angle.
When realizing, the sweep parameter adjusting submodule may include:
The first adjustment submodule, the z-axis position in sweep parameter for adjusting the current helical scanning are equal to record
Z-axis position of the last helical scanning in the actual scanning parameter of the overlapping region marginal position and default redundant position
And value or difference；
Second adjustment submodule, the unwrapping wire angle in sweep parameter for adjusting the current helical scanning are equal to record
Unwrapping wire angle of the last helical scanning in the actual scanning parameter of the overlapping region marginal position and default redundancy angle
Spend and value or difference.
When realizing, the data fusion module may include:
Data fusion submodule, for the actual scanning by the matching helical scanning lap position terminal position twice
The mode of parameter determines data fusion position, the life data and described upper one based on current helical scanning described in the fusion position
The life data that secondary helical scanning obtains carry out data merging.
Using helical scanning device provided by the invention, helical scanning equipment can be perfectly suitable for repeating helical scanning
Scene, repeat in the case where building as demand of helical scanning meeting, shorten scanning area, scanning dose is saved, to subtract
The small radiation to scanned person.
In addition, the CT equipment is explained below with reference to Fig. 6 the present invention also provides a kind of CT equipment.
Referring to Fig. 6, Fig. 6 is a kind of structure chart of CT equipment provided by the invention, as shown in fig. 6, the CT equipment can include:
At least one processor (such as CPU), at least one network interface or other communication interfaces, memory, nonvolatile memory
(Nonvolatile RAM, NVRAM) and at least one internal bus (such as communication bus), for realizing between these devices
Connection communication.Wherein, processor is for executing helical scanning device stored in memory, which can rely on and meter
Calculation machine program is realized.Certainly, which also may include other memories, such as may include high-speed random access memory
(RAM:Random Access Memory), it is also possible to it further include non-labile memory (non-volatile memory),
A for example, at least magnetic disk storage.The system gateway is realized by least one network interface (can be wired or wireless)
With the communication connection between at least one other network element.Helical scanning device in Fig. 6 may refer to above and Fig. 5 correlation
Description.Which is not described herein again.The technical staff in the field can be understood that, for convenience of description and succinctly, on
The specific work process for stating description device and module, can refer to corresponding processes in the foregoing method embodiment, no longer superfluous herein
It states.
In several embodiments provided by the present invention, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the Installation practice described above arrived is only schematical, for example, the division of the unit,
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be with
In conjunction with or be desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or logical of device or unit
Letter connection can be electrical, mechanical or other forms.
The unit as illustrated by the separation member can be or be also possible to be physically separated, and show as unit
Component may or may not be physical unit, it can it is in one place, or may be distributed over multiple nets
On network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can realize in the form of software functional units.
It should be noted that those of ordinary skill in the art will appreciate that realizing the whole in above-described embodiment method or portion
Split flow is relevant hardware can be instructed to complete by computer program, and the program can be stored in a computer
In read/write memory medium, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, described
Storage medium can be magnetic disk, CD, read-only memory (Read-Only Memory, ROM) or random access memory
(Random Access Memory, RAM) etc..
A kind of spiral scanning method provided by the present invention and device are described in detail above, it is used herein
Principle and implementation of the present invention are described for specific embodiment, and the above embodiments are only used to help understand
Method and its core concept of the invention；At the same time, for those skilled in the art is having according to the thought of the present invention
There will be changes in body embodiment and application range, in conclusion the content of the present specification should not be construed as to the present invention
Limitation.
Claims (8)
1. a kind of spiral scanning method, which is characterized in that the described method includes:
The overlapping region of the scanning area of the scanning area and last helical scanning that determine current helical scanning between the two；
Last helical scanning is recorded in the actual scanning parameter of the overlapping region marginal position；
It is described current in the actual scanning parameter adjustment of the overlapping region marginal position according to the last helical scanning of record
The sweep parameter of helical scanning, control helical scanning equipment start to execute current helical scanning according to sweep parameter adjusted,
Bulb is controlled in the overlapping region not divergent-ray, in the Non-overlapping Domain divergent-ray of the current helical scanning, scanning
Obtain the life data of current helical scanning；
The life data that the life data of the current helical scanning and the last helical scanning obtain are subjected to data fusion.
2. spiral scanning method according to claim 1, which is characterized in that the actual scanning parameter includes:
Z axis position and unwrapping wire angle.
3. spiral scanning method according to claim 2, which is characterized in that the last helical scanning according to record
The sweep parameter of the current helical scanning is adjusted in the actual scanning parameter of the overlapping region marginal position, comprising:
It adjusts the Z axis position in the sweep parameter of the current helical scanning and is equal to the last helical scanning of record described heavy
Z axis position and default redundant position in the actual scanning parameter of folded edges of regions position and be worth or difference；
It adjusts the unwrapping wire angle in the sweep parameter of the current helical scanning and is equal to the last helical scanning of record described
Unwrapping wire angle in the actual scanning parameter of overlapping region marginal position and default redundancy angle and be worth or difference.
4. spiral scanning method according to claim 2, which is characterized in that the life number by the current helical scanning
Data fusion is carried out according to the life data obtained with the last helical scanning, comprising:
By way of matching the actual scanning parameter of helical scanning overlapping region terminal position twice, data fusion position is determined
Set, the life data obtained the life data of the current helical scanning and the last helical scanning based on the fusion position into
Row data merge.
5. a kind of helical scanning device, which is characterized in that described device includes:
Overlapping region determining module, for determining the scanning area of current helical scanning and the scanning area of last helical scanning
Overlapping region between the two；
Logging modle, for recording last helical scanning in the actual scanning parameter of the overlapping region marginal position；
Scan control module, comprising: sweep parameter adjusting submodule, for the last helical scanning according to record described heavy
The actual scanning parameter of folded edges of regions position adjusts the sweep parameter of the current helical scanning；And helical scanning control
Submodule starts to execute current helical scanning according to sweep parameter adjusted, to control ball for controlling helical scanning equipment
Pipe is in the overlapping region not divergent-ray, and only in the Non-overlapping Domain divergent-ray of the current helical scanning, scanning is obtained
The life data of current helical scanning；
Data fusion module, the life number for obtaining the life data of the current helical scanning and the last helical scanning
According to progress data fusion.
6. helical scanning device according to claim 5, which is characterized in that the actual scanning parameter includes:
Z axis position and unwrapping wire angle.
7. helical scanning device according to claim 6, which is characterized in that the sweep parameter adjusting submodule is also wrapped
It includes:
The first adjustment submodule, the Z axis position in sweep parameter for adjusting the current helical scanning are equal to record
Z axis position of the helical scanning in the actual scanning parameter of the overlapping region marginal position and default redundant position and
Value or difference；
Second adjustment submodule, the unwrapping wire angle in sweep parameter for adjusting the current helical scanning are equal to record
Unwrapping wire angle of the helical scanning in the actual scanning parameter of the overlapping region marginal position and default redundancy angle
With value or difference.
8. helical scanning device according to claim 6, which is characterized in that the data fusion module, further includes:
Data fusion submodule, for the side by matching the actual scanning parameter of helical scanning overlapping region terminal position twice
Formula determines data fusion position, based on the fusion position by the life data of the current helical scanning and the last spiral
It scans obtained life data and carries out data merging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610872595.9A CN106377275B (en) | 2016-09-30 | 2016-09-30 | A kind of spiral scanning method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610872595.9A CN106377275B (en) | 2016-09-30 | 2016-09-30 | A kind of spiral scanning method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106377275A CN106377275A (en) | 2017-02-08 |
| CN106377275B true CN106377275B (en) | 2019-11-12 |
Family
ID=57936981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610872595.9A Active CN106377275B (en) | 2016-09-30 | 2016-09-30 | A kind of spiral scanning method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106377275B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107798711B (en) * | 2017-12-12 | 2021-06-29 | 上海联影医疗科技股份有限公司 | Medical imaging scanning method and system |
| CN108209957A (en) * | 2017-12-30 | 2018-06-29 | 上海联影医疗科技有限公司 | Merging method, device and the medical image system of inspection |
| CN110090954B (en) * | 2019-04-24 | 2020-11-06 | 中国石油大学(北京) | Additive manufacturing NiTi shape memory alloy and preparation method thereof |
| CN110476826B (en) * | 2019-09-20 | 2021-08-27 | 成都泰盟软件有限公司 | Method for tracking animal autorotation circle |
| CN111768858A (en) * | 2020-06-30 | 2020-10-13 | 上海联影医疗科技有限公司 | Method, system and computer equipment for displaying scanning pitch parameters |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1895174A (en) * | 2005-06-10 | 2007-01-17 | 通用电气公司 | Step-and-shoot cardiac ct imaging |
| CN104507391A (en) * | 2012-10-09 | 2015-04-08 | 三菱重工业株式会社 | Photography control device, photography system, photography control method, and program |
| CN105167789A (en) * | 2012-06-20 | 2015-12-23 | 三星电子株式会社 | X-ray imaging apparatus and control method thereof |
| CN105326521A (en) * | 2014-05-30 | 2016-02-17 | Ge医疗系统环球技术有限公司 | Evaluation system and method of scanning dose in computed tomography medical diagnosis |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5792569B2 (en) * | 2011-09-21 | 2015-10-14 | 富士フイルム株式会社 | Radiation imaging system and long imaging method of radiation imaging system |
-
2016
- 2016-09-30 CN CN201610872595.9A patent/CN106377275B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1895174A (en) * | 2005-06-10 | 2007-01-17 | 通用电气公司 | Step-and-shoot cardiac ct imaging |
| CN105167789A (en) * | 2012-06-20 | 2015-12-23 | 三星电子株式会社 | X-ray imaging apparatus and control method thereof |
| CN104507391A (en) * | 2012-10-09 | 2015-04-08 | 三菱重工业株式会社 | Photography control device, photography system, photography control method, and program |
| CN105326521A (en) * | 2014-05-30 | 2016-02-17 | Ge医疗系统环球技术有限公司 | Evaluation system and method of scanning dose in computed tomography medical diagnosis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106377275A (en) | 2017-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106377275B (en) | A kind of spiral scanning method and device | |
| JP5274119B2 (en) | System for user interface of digital X-ray emission tomosynthesis | |
| US7653224B2 (en) | Image reconstruction method and tomograph | |
| CN110533597B (en) | Artifact processing method, artifact processing device, rotation center determining device, artifact processing equipment and storage medium | |
| JP5184784B2 (en) | X-ray CT system | |
| US7336762B2 (en) | Scan program communication method and X-ray CT apparatus | |
| JP2015147041A (en) | X-ray CT apparatus and CT image display method | |
| US11399787B2 (en) | Methods and systems for controlling an adaptive contrast scan | |
| JP2006346455A (en) | Step-and-shoot cardiac ct imaging method | |
| CN104200500A (en) | Method and device for reconstructing heart image | |
| US9655584B2 (en) | Computed tomography apparatus and method of controlling X-ray by using the same | |
| CN104661596A (en) | Image processing device, x-ray diagnostic device, and display method | |
| CN104837405A (en) | Image-processing device, diagnostic x-ray apparatus and positioning method | |
| EP3229160A2 (en) | Method for configuring a medical instrument, system for con-figuring a medical instrument, computer program product and computer readable medium | |
| JP6666738B2 (en) | Ultrasound diagnostic apparatus, rotary probe attitude calculation apparatus, and rotary probe attitude calculation method | |
| US20060241370A1 (en) | Medical x-ray imaging workflow improvement | |
| US7949087B2 (en) | Radiography apparatus | |
| CN108182720A (en) | The method for reconstructing and medical imaging system of cardiac image | |
| CN109833055B (en) | Image reconstruction method and device | |
| JP2010004959A (en) | X-ray ct apparatus | |
| CN108898582B (en) | Heart image reconstruction method and device and computer equipment | |
| JP6074450B2 (en) | CT system | |
| US6975897B2 (en) | Short/long axis cardiac display protocol | |
| CN110338827A (en) | Medical imaging procedure, system and storage medium | |
| CN108095749B (en) | CT scanning method, device and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 110179 No. 177-1 Innovation Road, Hunnan District, Shenyang City, Liaoning Province Applicant after: DongSoft Medical System Co., Ltd. Address before: Hunnan New Century Road 110179 Shenyang city of Liaoning Province, No. 16 Applicant before: Dongruan Medical Systems Co., Ltd., Shenyang |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |