CN109363702A - Medical imaging procedure, the acquisition methods of system and dose of radiation, system - Google Patents
Medical imaging procedure, the acquisition methods of system and dose of radiation, system Download PDFInfo
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- CN109363702A CN109363702A CN201811149499.7A CN201811149499A CN109363702A CN 109363702 A CN109363702 A CN 109363702A CN 201811149499 A CN201811149499 A CN 201811149499A CN 109363702 A CN109363702 A CN 109363702A
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- 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
- A61B6/5258—Devices using data or image processing specially adapted for radiation diagnosis involving detection or reduction of artifacts or noise
- A61B6/5264—Devices using data or image processing specially adapted for radiation diagnosis involving detection or reduction of artifacts or noise due to motion
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- 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
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- 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
- A61B6/04—Positioning of patients; Tiltable beds or the like
-
- 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
- A61B6/5211—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data
Abstract
The embodiment of the invention provides the acquisition methods of a kind of medical imaging procedure, system and dose of radiation, system.The embodiment of the present invention controls the respiratory rate and amplitude of respiration of detected object by breathing apparatus, so that detected object is breathed according to setting respiratory rate and setting amplitude of respiration, it sets amplitude of respiration and is less than designated magnitude, during detected object is breathed according to setting respiratory rate and setting amplitude of respiration, detected object is scanned, to obtain scan image, reconstruction image is obtained according to scan image, by the amplitude of respiration control of detected object in scanning process following to a certain degree, reduce the artifact in scan image, therefore the picture quality according to reconstruction image obtained by scan image is improved, the amplitude of respiration for solving detected object in the prior art to a certain extent is excessive, cause serious motion artifacts, lead to the problem that picture quality is poor.
Description
[technical field]
This programme is related to the acquisition of field of medical technology more particularly to a kind of medical imaging procedure, system and dose of radiation
Method, system.
[background technique]
Medical imaging, which refers to, is scanned the appointed part of detected object using medical imaging devices, then according to scanning
As a result it rebuilds and obtains the medical image significant to diagnosis/treatment.Medical imaging technology has become the important auxiliary of one kind and examines
The means of disconnected/treatment, application are very universal.
The picture quality of medical image is particularly significant for diagnosis/treatment influence.The high medical image of quality can be
Doctor provides accurate data, accurately diagnoses and reach better therapeutic effect to facilitate doctor and make.It is ropy
The not big reference value of medical image can generally be abandoned.
Utilizing CT (Computed Tomography, CT scan), PET (Positron
Emission Computed Tomography, positron e mission computed tomography), RT (Radiographic
Testing, ray detection) etc. medical imaging devices to detected object scanning during, detected object can not hold one's breath always, this
Sample, respiratory movement cause the physical feelings such as the internal organs of detected object to shift, cause to generate artifact in scan image, so that figure
Image quality amount reduces.Moreover, amplitude of respiration is bigger, artifact is more serious.In medical scanning imaging process in the prior art, by inspection pair
The amplitude of respiration of elephant is excessive, causes serious motion artifacts, causes picture quality poor.
[summary of the invention]
In view of this, this programme embodiment provide a kind of medical imaging procedure, system and dose of radiation acquisition methods,
System, the amplitude of respiration to solve detected object in medical scanning imaging process in the prior art is excessive, causes serious fortune
Dynamic artifact, leads to the problem that picture quality is poor.
In a first aspect, the embodiment of the present invention provides a kind of medical imaging procedure, which comprises
Before scanning, the respiratory rate and amplitude of respiration of detected object are controlled by breathing apparatus, so as to described by inspection pair
As being breathed according to setting respiratory rate and setting amplitude of respiration, the setting amplitude of respiration is less than designated magnitude；
During the detected object is breathed according to the setting respiratory rate and the setting amplitude of respiration,
The detected object is scanned, to obtain scan image；
Reconstruction image is obtained according to the scan image.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the method is also
Include:
Acquire the breath signal of the detected object during the scanning process；
Reconstruction image is obtained according to the scan image, comprising: according to the breath signal, is selected from the scan image
Take image to be reconstructed；Reconstruction processing is carried out to the image to be reconstructed, obtains the reconstruction image.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation is exhaled according to described
Signal is inhaled, image to be reconstructed is chosen from the scan image, comprising:
It searches and corresponds to the period that amplitude of respiration is greater than setting amplitude of respiration in the breath signal, as the label time
Section；It is in the image marked in the period from corresponding sweep time is deleted in the scan image, residual image is chosen and makees
For image to be reconstructed.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, to described to weight
It builds image and carries out reconstruction processing, before obtaining the reconstruction image, the method also includes:
According to the breath signal, respiratory movement correction is carried out to the image to be reconstructed, obtains correction image；
Reconstruction processing is carried out to the image to be reconstructed, obtains the reconstruction image, comprising: the correction image is carried out
Reconstruction processing, obtains the reconstruction image.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the method is also
Include:
During the scanning process, the practical amplitude of respiration of the detected object is monitored；
When the practical amplitude of respiration is greater than the designated magnitude, the detected object is adjusted by the breathing apparatus
Respiratory rate, so as to make the detected object practical amplitude of respiration be less than the designated magnitude.
Second aspect, the embodiment of the present invention provide a kind of medical image system, and the system comprises processor and storages
Device；The memory for storing instruction, when described instruction is executed by the processor, causes the system to realize such as first party
The described in any item methods in face.
The third aspect, the embodiment of the present invention provide a kind of acquisition methods of dose of radiation, which comprises
Before the treatment, the respiratory rate and amplitude of respiration for the treatment of object are controlled, by breathing apparatus so as to the treatment pair
As being breathed according to setting respiratory rate and setting amplitude of respiration, the setting amplitude of respiration is less than designated magnitude；
During the treatment object is breathed according to the setting respiratory rate and the setting amplitude of respiration,
Target area is chosen according to the setting amplitude of respiration；
According to the corresponding volume in the target area, the dose of radiation radiated to the target area is determined.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the method is also
Include:
In radiative process, the practical amplitude of respiration of the treatment object is monitored；
When the practical amplitude of respiration is greater than the designated magnitude, the alignment position of radiation ray is adjusted, to make
State the appointed part in radiation ray alignment target region.
Fourth aspect, the embodiment of the present invention provide a kind of acquisition system of dose of radiation, the system comprises processor with
And memory；The memory for storing instruction, when described instruction is executed by the processor, causes the system to be realized such as
The described in any item methods of the third aspect.
5th aspect, the embodiment of the present invention provide a kind of medical imaging procedure, which comprises
Before the heart to detected object is scanned, the first breath signal of the detected object is acquired；
It according to first breath signal and holds one's breath and indicates information, determination is held one's breath start time, to prompt described examined
Object enters breath-hold state in the start time of holding one's breath；
Start the scanning to the detected object in the start time of holding one's breath, to obtain scan image；
Reconstruction image is obtained according to the scan image.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the method is also
Include:
Acquire the second breath signal of the detected object during the scanning process；
Reconstruction image is obtained according to the scan image, comprising: according to second breath signal, from the scan image
The image for meeting the condition of holding one's breath when middle selection Image Acquisition, as image to be reconstructed；The image to be reconstructed is carried out at reconstruction
Reason, obtains the reconstruction image.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the method is also
Include:
According to second breath signal, statistics meets the total duration for the condition of holding one's breath in the scanning process；
Based on the total duration, the quality parameter value of the reconstruction image is determined；
The quality parameter value is compared with mass parameter a reference value, obtains comparison result；
According to the comparison result, judge whether the reconstruction image is qualified.
6th aspect, the embodiment of the present invention provide a kind of medical image system, and the system comprises processor and storages
Device；The memory for storing instruction, when described instruction is executed by the processor, causes the system to realize such as the 5th side
The described in any item methods in face.
One embodiment of the present of invention has the advantages that
The embodiment of the present invention is by before scanning, the respiratory rate and breathing width of detected object being controlled by breathing apparatus
Degree, so that detected object is breathed according to setting respiratory rate and setting amplitude of respiration, setting amplitude of respiration is less than specified width
Degree sweeps detected object during detected object is breathed according to setting respiratory rate and setting amplitude of respiration
It retouches, to obtain scan image, reconstruction image is obtained according to scan image, the amplitude of respiration of detected object in scanning process is controlled
To a certain degree hereinafter, reduce the artifact in scan image, therefore improve the figure according to reconstruction image obtained by scan image
Image quality amount.
[Detailed description of the invention]
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this field
For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the first pass exemplary diagram of medical imaging procedure provided in an embodiment of the present invention.
Fig. 2 is the second procedure exemplary diagram of medical imaging procedure provided in an embodiment of the present invention.
Fig. 3 is the flow example figure of the acquisition methods of dose of radiation provided in an embodiment of the present invention.
Fig. 4 is the schematic illustration that adjusting radiation ray provided in an embodiment of the present invention is directed at position.
[specific embodiment]
For a better understanding of the technical solution of the present invention, being retouched in detail to the embodiment of the present invention with reference to the accompanying drawing
It states.
It will be appreciated that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
Its embodiment, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is only to be not intended to be limiting merely for for the purpose of describing particular embodiments
The present invention.In the embodiment of the present invention and the "an" of singular used in the attached claims, " described " and "the"
It is also intended to including most forms, unless the context clearly indicates other meaning.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate: individualism A, exist simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination " or " in response to detection ".Similarly, depend on context, phrase " if it is determined that " or " if detection
(condition or event of statement) " can be construed to " when determining " or " in response to determination " or " when the detection (condition of statement
Or event) when " or " in response to detection (condition or event of statement) ".
Embodiment one
The embodiment of the invention provides a kind of medical imaging procedure, which can be applied to CT equipment, PET
Equipment, RT equipment scanning imagery during.
Fig. 1 is the first pass exemplary diagram of medical imaging procedure provided in an embodiment of the present invention.As shown in Figure 1, this implementation
In example, medical imaging procedure be may include steps of:
S101 controls the respiratory rate and amplitude of respiration of detected object by breathing apparatus before scanning, so as to by inspection pair
As being breathed according to setting respiratory rate and setting amplitude of respiration, setting amplitude of respiration is less than designated magnitude.
S102, during detected object is breathed according to setting respiratory rate and setting amplitude of respiration, to being examined
Object is scanned, to obtain scan image.
S103 obtains reconstruction image according to scan image.
Wherein, breathing apparatus can be ventilator.
Medical imaging devices can need to breathe under the not controlled state processed with collected detected object according to imaging to be believed
Number, calculate setting respiratory rate numerical value and setting amplitude of respiration numerical value, then by set respiratory rate numerical value and
The pressure value that numerical value conversion by setting amplitude of respiration obtains, is connect by the communication between medical imaging devices and breathing apparatus
Breathing apparatus is passed in oral instructions, so that breathing apparatus is exhaled according to setting respiratory rate and setting amplitude of respiration control detected object
It inhales.
Wherein, designated magnitude can be determined according to the relationship of artifact and amplitude of respiration.Since amplitude of respiration is bigger, artifact is got over
Seriously, it can rule of thumb be arranged one and refer to artifact degree value, when the severity of artifact in scan image is equal to the reference
When artifact degree value, the picture quality of the reconstruction image obtained according to the scan image meets sets requirement.Assuming that with reference to artifact
The corresponding amplitude of respiration of the artifact of degree value is that designated magnitude, which can be equal to or less than, refers to amplitude of respiration with reference to amplitude of respiration.
In step S102, since during the scanning process, the amplitude of respiration of detected object is controlled in less than designated magnitude
It sets in amplitude of respiration, therefore the artifact in scan image has been controlled in setting degree hereinafter, thereby may be ensured that step
Preferable picture quality is had according to the obtained reconstruction image of scan image in S103.
As it can be seen that the embodiment of the present invention reduces the artifact in scan image, to drop by the breathing of control detected object
Low influence of the artifact for picture quality, improves picture quality.
Moreover, so that scanning success rate also improves, reducing because of image since picture quality improves
The case where being rescaned caused by off quality, and then improve scan efficiency.
During an illustrative realization, medical imaging procedure can also include: acquisition detected object scanned
Breath signal in journey；Obtain reconstruction image according to scan image, comprising: according to breath signal, chosen from scan image to
Reconstruction image；It treats reconstruction image and carries out reconstruction processing, obtain reconstruction image.
Wherein, the breath signal of acquisition is the practical breath signal of detected object during the scanning process.
After controlling the breathing of detected object, although detected object on the whole can be according to setting respiratory rate and setting
Amplitude of respiration is breathed, but due to some fortuitous events, is likely to appear in the of short duration time and is actually exhaled during the scanning process
Suction amplitude is greater than the case where setting amplitude of respiration.In order to guarantee the picture quality of reconstruction image, need practical amplitude of respiration is big
The scan image removal obtained in the time of setting amplitude of respiration, in this way, remaining scan image used for reconstruction is still
Corresponding practical amplitude of respiration is equal to or less than the image of setting amplitude of respiration, can obtain the reconstruction image of good quality.In this way,
It avoids to cause last reconstructed image quality not conform to due to occurring the excessive situation of of short duration amplitude of respiration in scanning process
Lattice improve scan efficiency to reduce the number for needing multiple scanning.
Wherein, according to breath signal, image to be reconstructed is chosen from scan image, may include: to search in breath signal
Corresponding amplitude of respiration is greater than the period of setting amplitude of respiration, as the label period；Corresponding scanning is deleted from scan image
Time is in the image in the label period, chooses residual image as image to be reconstructed.
During an illustrative realization, treats reconstruction image and carry out reconstruction processing, before obtaining reconstruction image, doctor
Learning imaging method can also include: to treat reconstruction image according to breath signal and carry out respiratory movement correction, obtain correction image；
It treats reconstruction image and carries out reconstruction processing, obtain reconstruction image, comprising: reconstruction processing is carried out to correction image, obtains reconstruction figure
Picture.
It is corrected by respiratory movement, the artifact in image to be reconstructed can be weakened, to improve the image matter of reconstruction image
Amount.
During an illustrative realization, medical imaging procedure can also include: that during the scanning process, monitoring is examined
The practical amplitude of respiration of object；When practical amplitude of respiration is greater than designated magnitude, exhaling for detected object is adjusted by breathing apparatus
Frequency is inhaled, to make the practical amplitude of respiration of detected object be less than designated magnitude.
During the scanning process, due to some fortuitous events, it is possible that practical amplitude of respiration is greater than the feelings of designated magnitude
Condition is less than the practical amplitude of respiration of detected object at this point, being adjusted by respiratory rate of the breathing apparatus to detected object
Designated magnitude can reduce the number for needing to rescan, to improve scan efficiency to avoid scanning failure.
Medical imaging procedure provided in an embodiment of the present invention, by before scanning, controlling detected object by breathing apparatus
Respiratory rate and amplitude of respiration, so as to detected object according to setting respiratory rate and setting amplitude of respiration breathed, set
Amplitude of respiration is less than designated magnitude, in the process that detected object is breathed according to setting respiratory rate and setting amplitude of respiration
In, detected object is scanned, to obtain scan image, reconstruction image is obtained according to scan image, by scanning process by
The amplitude of respiration control of inspection object is improved according to scanning to a certain degree hereinafter, reduce the artifact in scan image
The picture quality of reconstruction image obtained by image.
Embodiment two
The present embodiment provides a kind of medical image system, which includes processor and memory；Memory is for depositing
Storage instruction when the instruction is executed by processor, causes system to realize any medical imaging procedure in previous embodiment one.
Embodiment three
Holding one's breath is one of whether successful determinant of heart scanning.If detected object does not shield aerobic, will lead to
Scanning failure, needs to rescan.Other than screen does not live gas, air-breathing too foot can also make poor quality images, so as to cause the heart
Dirty scanning failure, needs to inhale a small implication and then holds because heart scanning is held one's breath.In the prior art, detected object can not perceive
Air-breathing degree, therefore start to hold one's breath for when and can not carry out accurate judgement, cause to hold one's breath unqualified, and then scanning is caused to be lost
It loses, needs the case where rescaning more, cause scan efficiency low.
The embodiment of the invention provides a kind of medical imaging procedure, which be can be applied to detected object
Heart carry out CT scan imaging process in.
Fig. 2 is the second procedure exemplary diagram of medical imaging procedure provided in an embodiment of the present invention.As shown in Fig. 2, this implementation
In example, medical imaging procedure be may include steps of:
S201 acquires the first breath signal of detected object before the heart to detected object is scanned.
S202 according to the first breath signal and holds one's breath and indicates information, and determination is held one's breath start time, to prompt detected object
Holding one's breath, start time enters breath-hold state.
S203 starts the scanning to detected object in start time of holding one's breath, to obtain scan image.
S204 obtains reconstruction image according to scan image.
The breath signals such as the first breath signal and the second following breath signal can be adopted by respiration monitoring control device
Collection.Breath signal can be the respiratory waveform figure being displayed on the screen.The time is indicated in the horizontal axis of respiratory waveform figure, and vertical pivot indicates
Amplitude.
It in step S202, according to the first breath signal and holds one's breath and indicates information, determination is held one's breath start time, can be to air-breathing
Degree is well controllled, to avoid air-breathing too sufficient.
Wherein, it holds one's breath and indicates that information can be the indicator graduation lines of holding one's breath marked on respiratory waveform.
Indicator graduation lines of holding one's breath can be the straight line of the horizontal axis of a parallel respiratory waveform figure, at this point, inhaling in detected object
During gas, respiratory waveform and at the time of hold one's breath corresponding to the crosspoint of indicator graduation lines to hold one's breath start time.In this way, by
Inspection object will be intuitive to see the air-breathing degree of oneself, to know the exact time into breath-hold state.In this way, it is avoided that
Air-breathing causes very much to hold one's breath unqualified and scanning is caused to fail enough, reduces the number for needing to rescan, to improve scanning
Efficiency.
Detected object can by observing display screen, according to the respiratory waveform of display and holding one's breath indicate information actively know into
Enter the exact time of breath-hold state.When air-breathing degree soon reaches the requirement held one's breath and indicate information, equipment can issue prompting
Information, to remind detected object to be prepared to enter into breath-hold state.Wherein, prompting message can be indicator light, voice prompting etc..
Wherein, the height for indicator graduation lines of holding one's breath can be determined according to amplitude of respiration.For example, indicator graduation lines of holding one's breath
Height can be set to the product of amplitude of respiration and prescribed percentage.In this manner it is possible to for different amplitude of respiration by inspection pair
As can preferably control the degree of holding one's breath.
During an illustrative realization, medical imaging procedure can also include: acquisition detected object scanned
The second breath signal in journey；Reconstruction image is obtained according to scan image, comprising: according to the second breath signal, from scan image
The image for meeting the condition of holding one's breath when middle selection Image Acquisition, as image to be reconstructed；It treats reconstruction image and carries out reconstruction processing, obtain
To reconstruction image.
Although in embodiment illustrated in fig. 2, being held one's breath beginning by indicating the determination of information according to the first breath signal and holding one's breath
Moment, air-breathing degree when starting for holding one's breath have carried out good control, and still, during holding one's breath, detected object is exhaled
It inhales it is possible that the slight fluctuations that can not directly perceive, the scan image acquired during fluctuation is second-rate, will lead to weight
It is unqualified to build image.But if the scan image acquired during removal fluctuation, up-to-standard with what is acquired during qualification of holding one's breath
Scan image rebuild, then can obtain up-to-standard reconstruction image.
Therefore, in this example by the second breath signal during acquisition scans, by according to the second breath signal, from
Image to be reconstructed is chosen in scan image, is eliminated underproof scan image during heart scanning, is improved reconstruction image
Picture quality further improve and sweep to reduce the number for leading to rescan since reconstructed image quality is unqualified
Retouch efficiency.
During an illustrative realization, medical imaging procedure can also include: according to the second breath signal, statistics
Meet the total duration for the condition of holding one's breath during the scanning process；Based on total duration, the quality parameter value of reconstruction image is determined；Quality is joined
Numerical value is compared with mass parameter a reference value, obtains comparison result；According to comparison result, judge whether reconstruction image is qualified.
Wherein, quality parameter value is the value for measuring the quality degree of reconstruction image.For example, quality parameter value can
To be quality rating value, quality rating value is higher, and picture quality is better, conversely, quality rating value is lower, picture quality is poorer.
Wherein, quality parameter value is compared with mass parameter a reference value, may include: that quality parameter value subtracts quality
The resulting difference of parameter reference value, the difference are comparison result.If difference is greater than 0, determines reconstruction image qualification, do not need again
Scanning；If difference determines that reconstruction image is unqualified, needs to rescan less than 0.
Medical imaging procedure provided in an embodiment of the present invention, by acquiring before the heart to detected object is scanned
First breath signal of detected object according to the first breath signal and holds one's breath and indicates information, and determination is held one's breath start time, to mention
Show that detected object enters breath-hold state in start time of holding one's breath, starts the scanning to detected object in start time of holding one's breath, to obtain
Scan image is obtained, reconstruction image is obtained according to scan image, using the determination to start time of holding one's breath, during heart scanning
The degree of holding one's breath controlled, avoid because air-breathing too enough caused by hold one's breath it is unqualified, and cause scanning fail, reduce again
The case where scanning, therefore improve scan efficiency.
Example IV
The embodiment of the present invention provides a kind of medical image system, which includes processor and memory；Wherein, it stores
Device for storing instruction, when which is executed by processor, causes system to realize any medical imaging in previous embodiment three
Method.
Embodiment five
During carrying out radiation therapy to treatment object using ray, target area to be treated is with respiratory movement
Expansion and contraction cause the range of target area constantly to change.When amplitude of respiration is big, the range of target area also increases, when
The range of amplitude of respiration hour, target area also reduce.Therefore, different amplitude of respiration corresponds to the range size of target area not
Together.
In the prior art, dose of radiation is fixed, in this way, when amplitude of respiration is excessive, the range of corresponding target area
Larger, dose of radiation dosage is inadequate, causes the diseased region in target area that can often be detached from the radiation scope of radiation ray.It can
See, the dose of radiation accuracy radiated in the prior art to target area is lower.It is poor that this will lead to therapeutic effect.
The embodiment of the invention provides a kind of acquisition methods of dose of radiation, the acquisition methods of the dose of radiation can be applied
During carrying out radiation therapy to treatment object using CT equipment, PET device or RT equipment.For example, using ray to controlling
The tumour for treating object is radiated, during killing tumour, the dose of radiation that can provide through the embodiment of the present invention
Acquisition methods determine dose of radiation.
Fig. 3 is the flow example figure of the acquisition methods of dose of radiation provided in an embodiment of the present invention.As shown in figure 3, this reality
It applies in example, the acquisition methods of dose of radiation may include steps of:
S301 controls the respiratory rate and amplitude of respiration for the treatment of object by breathing apparatus before the treatment, to treat pair
As being breathed according to setting respiratory rate and setting amplitude of respiration, setting amplitude of respiration is less than designated magnitude.
S302, during treatment object is breathed according to setting respiratory rate and setting amplitude of respiration, according to setting
Determine amplitude of respiration and chooses target area.
S303 determines the dose of radiation radiated to target area according to the corresponding volume in target area.
Wherein, target area is the position region that tumour is had in region to be treated, such as treatment object body.
Before the treatment, the adjustable suitable respiratory rate of doctor and amplitude of respiration, allow treatment object to be in the most comfortable
State, this is conducive to subsequent long-time treatment.Wherein, setting respiratory rate and setting amplitude of respiration can be by treatments pair
Know as carrying out respiratory training, setting respiratory rate and setting amplitude of respiration can be set to the shape that treatment object feels the most comfortable
Respiratory rate corresponding to state and amplitude of respiration.
In step S302, target area is chosen according to setting amplitude of respiration, so that the range and amplitude of respiration of target area
It is corresponding, to determine that dose of radiation lays the foundation to be accurate.
Wherein, target area can be chosen at expiration end moment selection in the respiratory cycle, because of the expiration of respiratory cycle
End corresponds to the maximum magnitude that target area can be expanded to, if dose of radiation can support the maximum model of the target area
It encloses, it will be able to support the range of any moment target area in the entire respiratory cycle.
In step S303, according to the corresponding volume in target area, determines the dose of radiation radiated to target area, make
It obtains dose of radiation volume corresponding with target area to be adapted, improves the accuracy of dose of radiation.This makes dose of radiation sufficient
To support to carry out radiation therapy to the diseased region in target area, therapeutic effect is helped to improve.
During an illustrative realization, the acquisition methods of dose of radiation can also include: the prison in radiative process
Survey the practical amplitude of respiration for the treatment of object；When practical amplitude of respiration is greater than designated magnitude, the alignment position of radiation ray is adjusted,
To make the appointed part in radiation ray alignment target region.
Wherein, appointed part is position where diseased region in need for the treatment of, such as tumour.
Since target area is chosen according to setting amplitude of respiration, when practical amplitude of respiration is greater than designated magnitude, mesh
The maximum magnitude for marking region expands, it has been determined that dose of radiation be not enough to cover the target area after entire expand, at this point, passing through
The alignment position for adjusting radiation ray, makes appointed part in need for the treatment of in radiation ray alignment target region, still can reach
To preferable therapeutic effect, so as to make up the inadequate influence of dose of radiation.
Wherein, the alignment position for adjusting radiation ray can be realized by the position of mobile beam-defining clipper mesoporous.
Fig. 4 is the schematic illustration that adjusting radiation ray provided in an embodiment of the present invention is directed at position.Fig. 4 is referred to, is penetrated
Barrier of the ray that line source issues by baffle in beam-defining clipper, passes through from the hole that baffle is formed, and the position of radiographic source is constant, when
In mobile beam-defining clipper when baffle, the position in hole is changed correspondingly, so that ray be made to change alignment position.
The acquisition methods of dose of radiation provided in this embodiment, by before the treatment, passing through breathing apparatus control treatment pair
The respiratory rate and amplitude of respiration of elephant, so that treatment object is breathed according to setting respiratory rate and setting amplitude of respiration, if
Amplitude of respiration is determined less than designated magnitude, in the process that treatment object is breathed according to setting respiratory rate and setting amplitude of respiration
In, target area is chosen according to setting amplitude of respiration, according to the corresponding volume in target area, determination radiates target area
Dose of radiation, be adapted the dose of radiation for the treatment of with the target area chosen according to amplitude of respiration, therefore mesh can be directed to
Mark region determines suitable dose of radiation, improves the accuracy of dose of radiation.Also, dose of radiation is made to be enough to support to mesh
The diseased region marked in region carries out radiation therapy, helps to improve therapeutic effect.
Embodiment six
The embodiment of the present invention provides a kind of acquisition system of dose of radiation, which includes processor and memory；It deposits
Reservoir for storing instruction, when instruction is executed by the processor, causes system to realize any radiation in previous embodiment five
The acquisition methods of dosage.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and module, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided by the present invention, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the module
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, for example, multiple modules or group
Part can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown
Or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or module it is indirect
Coupling or communication connection can be electrical property, mechanical or other forms.
The module as illustrated by the separation member may or may not be physically separated, aobvious as module
The component shown may or may not be physical module, it can and it is in one place, or may be distributed over multiple
In network unit.Some or all of the modules therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
It, can also be in addition, each functional module in each embodiment of the present invention can integrate in one processing unit
It is that modules physically exist alone, can also be integrated in one unit with two or more modules.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
It is each that device (can be personal computer, server or network equipment etc.) or processor (Processor) execute the present invention
The part steps of embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read-
Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic or disk etc. it is various
It can store the medium of program code.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (13)
1. a kind of medical imaging procedure, which is characterized in that the described method includes:
Before scanning, the respiratory rate and amplitude of respiration of detected object are controlled, by breathing apparatus so that the detected object is pressed
It is breathed according to setting respiratory rate and setting amplitude of respiration, the setting amplitude of respiration is less than designated magnitude；
During the detected object is breathed according to the setting respiratory rate and the setting amplitude of respiration, to institute
It states detected object to be scanned, to obtain scan image；
Reconstruction image is obtained according to the scan image.
2. the method according to claim 1, wherein the method also includes:
Acquire the breath signal of the detected object during the scanning process；
Obtain reconstruction image according to the scan image, comprising: according to the breath signal, chosen from the scan image to
Reconstruction image；Reconstruction processing is carried out to the image to be reconstructed, obtains the reconstruction image.
3. according to the method described in claim 2, it is characterized in that, being selected from the scan image according to the breath signal
Take image to be reconstructed, comprising:
It searches and corresponds to the period that amplitude of respiration is greater than setting amplitude of respiration in the breath signal, as the label period；From
Image of the corresponding sweep time within the label period is deleted in the scan image, is chosen residual image and is used as to weight
Build image.
4. according to the method described in claim 2, obtaining institute it is characterized in that, carry out reconstruction processing to the image to be reconstructed
Before stating reconstruction image, the method also includes:
According to the breath signal, respiratory movement correction is carried out to the image to be reconstructed, obtains correction image；
Reconstruction processing is carried out to the image to be reconstructed, obtains the reconstruction image, comprising: the correction image is rebuild
Processing, obtains the reconstruction image.
5. the method according to claim 1, wherein the method also includes:
During the scanning process, the practical amplitude of respiration of the detected object is monitored；
When the practical amplitude of respiration is greater than the designated magnitude, exhaling for the detected object is adjusted by the breathing apparatus
Frequency is inhaled, to make the practical amplitude of respiration of the detected object be less than the designated magnitude.
6. a kind of medical image system, which is characterized in that the system comprises processor and memories；The memory is used for
Store instruction when described instruction is executed by the processor, causes the system to be realized as described in any one of Claims 1 to 5
Method.
7. a kind of acquisition methods of dose of radiation, which is characterized in that the described method includes:
Before the treatment, the respiratory rate and amplitude of respiration for the treatment of object are controlled, by breathing apparatus so that the treatment object is pressed
It is breathed according to setting respiratory rate and setting amplitude of respiration, the setting amplitude of respiration is less than designated magnitude；
During the treatment object is breathed according to the setting respiratory rate and the setting amplitude of respiration, according to
The setting amplitude of respiration chooses target area；
According to the corresponding volume in the target area, the dose of radiation radiated to the target area is determined.
8. the method according to the description of claim 7 is characterized in that the method also includes:
In radiative process, the practical amplitude of respiration of the treatment object is monitored；
When the practical amplitude of respiration is greater than the designated magnitude, the alignment position of radiation ray is adjusted, to make the spoke
Appointed part in ray alignment target region.
9. a kind of acquisition system of dose of radiation, which is characterized in that the system comprises processor and memories；The storage
Device for storing instruction, when described instruction is executed by the processor, causes the system to be realized as described in claim 7 or 8
Method.
10. a kind of medical imaging procedure, which is characterized in that the described method includes:
Before the heart to detected object is scanned, the first breath signal of the detected object is acquired；
It according to first breath signal and holds one's breath and indicates information, determination is held one's breath start time, to prompt the detected object
Enter breath-hold state in the start time of holding one's breath；
Start the scanning to the detected object in the start time of holding one's breath, to obtain scan image；
Reconstruction image is obtained according to the scan image.
11. according to the method described in claim 10, it is characterized in that, the method also includes:
Acquire the second breath signal of the detected object during the scanning process；
Reconstruction image is obtained according to the scan image, comprising: according to second breath signal, is selected from the scan image
The image for meeting the condition of holding one's breath when taking Image Acquisition, as image to be reconstructed；Reconstruction processing is carried out to the image to be reconstructed, is obtained
To the reconstruction image.
12. according to the method for claim 11, which is characterized in that the method also includes:
According to second breath signal, statistics meets the total duration for the condition of holding one's breath in the scanning process；
Based on the total duration, the quality parameter value of the reconstruction image is determined；
The quality parameter value is compared with mass parameter a reference value, obtains comparison result；
According to the comparison result, judge whether the reconstruction image is qualified.
13. a kind of medical image system, which is characterized in that the system comprises processor and memories；The memory is used
In store instruction, when described instruction is executed by the processor, the system is caused to be realized such as any one of claim 10~12
The method.
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