CN105741303A - Medical image acquisition method - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005259 measurement Methods 0.000 claims abstract description 30
- 238000002059 diagnostic imaging Methods 0.000 claims abstract description 25
- 238000007689 inspection Methods 0.000 claims description 32
- 238000013170 computed tomography imaging Methods 0.000 claims description 4
- 238000003384 imaging method Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 12
- 238000002600 positron emission tomography Methods 0.000 description 9
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- 238000012805 post-processing Methods 0.000 description 2
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- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000012879 PET imaging Methods 0.000 description 1
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 1
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- 210000000746 body region Anatomy 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0012—Biomedical image inspection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
- G06T3/4038—Image mosaicing, e.g. composing plane images from plane sub-images
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10072—Tomographic images
- G06T2207/10104—Positron emission tomography [PET]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20212—Image combination
- G06T2207/20221—Image fusion; Image merging
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract
The present invention relates to a medical image acquisition method. The present invention discloses a planning method for examining an examination object in a medical imaging device. The method comprises the following steps: S1, acquiring a general image of an examination region; S2, setting a total bed number of a to-be-acquired image, a measurement parameter of a first bed and an image region of the first bed according to the general image, and determining image regions of the other beds according to the total bed number of the to-be-acquired image and the image region of the first bed, wherein measurement parameters of the other beds share the measurement parameter of the first bed; and S3, acquiring images of all to-be-acquired beds, and splicing all the acquired images to obtain a combination image. The present invention further discloses a method for acquiring a medical image using a medical image system. According to the method and system disclosed by the present invention, the image regions of the other beds can be determined with the only need for setting the image region of the first bed, and only by setting the measurement parameter of the first bed can the measurement parameter be applied to all the beds, so that operating efficiency is greatly improved.
Description
Technical field
The present invention relates to medical imaging technical field of imaging, particularly relate to a kind of method obtaining medical image.
Background technology
PET (PositronEmissionTomography) imaging technique is to utilize the medicines such as labeled glucose, aminoacid, thymus pyrimidine, the part of receptor or blood flow display agent as tracer, in anatomic image mode, show body and the metabolism of lesion tissue cell, function, blood flow, cell proliferation or receptor distribution situation from molecular level, the diagnostic message of more physiology and pathology aspect is provided, for helping the early diagnosis of cancer to have the performance of excellence for clinic.Owing in prior art, PET scan area size is fixed, overlapping range is fixed between each PET scan berth, operation technician can only plan the position in entire scan region, it is impossible to the overlapping region between overall PET scan region, each scanning berth is adjusted.Therefore, having sizable region when being actually needed the PET scan carrying out multiple berth is not necessary to diagnosis.These regions are also required to carry out the transmission scan of attenuation quotient, therefore add sweep time, and add the dosage that patient accepts.The defect of prior art causes to cover specific region, and the scanning of different physiological condition patient diagnosis extraneous areas is caused time lengthening and/or thus produces unnecessary dosage.
Mr techniques (MR technology) achieves medical imaging, such as the region to be checked of patient is applied radio-frequency field (HF field) and encourage the transmitting of MR signal in main field.Main field is usually produced by superconducting magnet, and determines the available maximum shooting area of MR equipment together with the requirement to gradient fields and HF field, and this maximum shooting area is generally in the order of magnitude of several decimeters.At present, magnetic resonance equipment presents the trend of the Magnet adopting shorter and shorter shape, this shorter magnet arrangement form allow in majority inspection the head of patient from Magnet out so that check and be not accompanied by narrow sensation for patient.But, it is more and more less that this shorter Magnet also results in visual field available in shooting, thus in MR checks, the important image segments of checked body region is more and more less too, for the user, is increasingly difficult to only just cover increasing inspection area with once checking.Therefore, the target of MR technology is, big, uniform irradiation as far as possible MR photo is produced within the review time short as far as possible, from user angle, the operation of magnetic resonance equipment is as far as possible simple, in order to realize above-mentioned target in prior art, there are two kinds of technology, one is " stepping composition " technology, and kind is " moving during scanning " technology.
In the first " stepping composition " technology, inspection area is divided into many sub regions by user, moves to fixing bed position, position by patient table and distinguishes (namely in the middle of maximum shooting area) concentric as far as possible and measure these subregions.Every height measures the closed data group all forming a MR shooting.Different MR photos is combined in ensuing post-processing step.The difficulty of this technology is in that the multiple measurement parameter that different son is measured accurately must be determined by user.This relates to: the locus of the shooting area of the partly overlapping sub-measurement of different possibilities and size；The Best Times of bed translation step is determined, for instance for contrast agent angiography, the selection of each coil to be used, it is considered to the uniformity of main field, gradient magnetic and HF field and Linearity, shoots with uniform irradiation MR and reduces distortion.When this inspection of plan and post processing, user must take into a lot of dependence factor, and this needs spend a lot of time and need significantly high Heuristics.
In the second " moving during scanning " technology, produce three-dimensional image data sets when patient continues to pass through MR equipment.At this, the frequency of the speed of bed and line by line excitation and scanning MR signal so tunes mutually so that produce required spatial resolution in each axle.This technology is also in commitment, and has the disadvantages that with regard to adoptable formation method, namely measurement this technology of sequence be limited.
It addition, in multi-modal tomograph system, use two or more different image modes to position or measure the heterogeneity in object space.PET imaging technique or MR technology all have the deficiency of limited field (FOV), limited spatial resolution makes it difficult to be scattered the activity outside FOV estimating and expand (spill-over) estimation of overflowing, therefore, the scanning for the big visual field of many berths remains problem demanding prompt solution.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of planing method for inspection object being checked in medical imaging equipment, comprise the following steps:
S1, gather inspection area general picture image；
S2, the image-region of total bedspace of image to be collected, the measurement parameter of the first berth and the first berth is set according to described general picture image, determines the image-region of other berths according to the image-region of total bedspace of image to be collected, the first berth；The measurement parameter measuring parameter sharing the first berth of other berths described；
S3, gather the image of all berths to be collected, and the image of all collections is carried out splicing obtain combination image.
Further, also include after described step S3:
S4, using described combination image as new general picture image, and return step S2.
Wherein, described step S2 particularly as follows:
S21, arranging the total quantity of berth in image to be collected according to described general picture image, the berth of described image to be collected includes the first berth；
S22, the measurement parameter that described first berth is set and image-region；
S23, the measurement parameter of other berths is set to consistent with the measurement parameter of described first berth, and determines the image-region of other berths according to the total quantity of described berth and the image-region of the first berth.
Described step S2 can also be:
S21, the image-region arranging the first berth of image to be collected according to described general picture image and measurement parameter, be set to consistent with the measurement parameter of described first berth by the measurement parameter of other berths；
S22, total bedspace of image to be collected is set, and determines the image-region of other berths according to the image-region of total bedspace and the first berth.
In described step S2, the image-region according to total bedspace and the first berth determines that the image-region of other berths specifically includes:
The image-region of total bedspace according to image to be collected and the first berth arranges the image-region of other berths except the first berth, or
Total bedspace according to image to be collected and the image-region of the first berth automatically generate the image-region of other berths except the first berth.
Further, described step S2 also includes arranging the overlay information between described berth, automatically generates the image-region of other berths described according to the lap between total berth quantity of described image to be collected, the image-region of the first berth and described berth.
Further, described overlay information includes size overlapping between ratio overlapping between described berth or berth.
Further, described medical imaging equipment is MR imaging apparatus or PET-Positron emission computed tomography imaging device or multi-modal magnetic resonance/PET-Positron emission computed tomography imaging device.
Correspondingly, present invention also offers a kind of method utilizing medical imaging system to obtain medical image, described medical imaging system includes the first scanning equipment, the second scanning equipment and examinating couch, described first scanning equipment has a FOV1, the second scanning equipment has the 2nd FOV2, described examinating couch can the first scanning equipment, the second scanning equipment around inspection intracavity move, comprise the following steps:
1) the first scanning equipment or the second scanning equipment is utilized to obtain the general picture image Scout intending inspection area；
2) according to general picture image Scout, a FOV1 and the 2nd FOV2, the total bedspace N required to intending inspection area scanning is calculated；
3) position and the sweep parameter of first berth it is set, and determines position and the sweep parameter of remaining N-1 berth according to total bedspace, and sweep parameter corresponding to the position of described N-1 berth shares the sweep parameter of the first berth at least partly；
4) utilize the first scanning equipment to gather the first picture signal of N number of berth, utilize the second scanning equipment to gather the second picture signal of N number of berth；
5) the first picture signal that N number of berth is corresponding is rebuild, it is thus achieved that the first image of N number of berth, the second picture signal that N number of berth is corresponding is rebuild, it is thus achieved that the second image of N number of berth；
6) the first image of N number of berth is combined, it is thus achieved that intend the first kind image of inspection area, combine the second image of N number of berth, it is thus achieved that intend the Second Type image of inspection area.
Further, described step 2) in total bedspace N obtain in such a way: according to general picture image Scout, a FOV1, the first scanning equipment that calculates completes the required total bedspace N1 of image to be collected, according to general picture image Scout, the 2nd FOV1, the second scanning equipment that calculates completes the required total bedspace N2 of image to be collected, and the value of described total bedspace N is the greater among both N1, N2.
Further, described first scanning equipment is used for obtaining general picture image Scout1, and described second scanning equipment is used for obtaining general picture image Scout2, using both Scout1, Scout2 the greater as general picture image Scout.
Further, described first scanning equipment is MR equipment or CT equipment, and described second scanning equipment is PET device, and described general picture image Scout is scanned equipment by first and obtains.
Further, the step that first kind image, Second Type image are merged also is included.
The method obtaining medical image of the present invention, has the advantages that
1, the present invention has only to arrange the image-region of the first berth, namely can determine that the image-region of other berths, and this measurement parameter just can be applied in all of berth by the measurement parameter arranging the first berth, operator only needs the total berth quantity setting the first berth and image to be collected can complete the scan plan of big visual field, convenient to operation, greatly improve work efficiency.
2, operator can arbitrarily change image lap and image thicknesses so that the scan plan of axial direction becomes flexible and directly perceived.
3, the planing method of the present invention can give degree of freedom more with operator, it is to avoid owing to broken away view is as the waste of the unreasonable sweep time caused.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 be the present invention in medical imaging equipment to the flow chart of planing method checking that object checks；
Fig. 2 is the inspection area position view checking object in the embodiment of the present invention one；
Fig. 3 is the flow chart of the method utilizing medical imaging system acquisition medical image of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the premise not making creative work, broadly fall into the scope of protection of the invention.
Embodiment one:
The invention provides a kind of planing method for inspection object being checked in medical imaging equipment, comprise the following steps:
S1, gathering the general picture image of inspection area, the general picture image of inspection area is that the spatial resolution of this general picture image is relatively low at the image checking object berth photographs, utilizes this general picture image can the image of high spatial resolution that check object be planned；
S2, the measurement parameter of the first berth to be collected and the image-region of the first berth are set according to described general picture image, show the image-region of the first berth simultaneously, the image-region of the first berth can be selected by operator oneself, can also be that system is automatically positioned, described measurement parameter includes HF and measures the parameter of sequence, TE parameter, the resolution of MR shooting, flip angle, visual field (FOV) size etc., when in applying at PET, measure parameter and also include the parameters such as length sweep time, method for reconstructing；
S3, total bedspace to be collected is set, and the image overlay information between thickness and each image of each image is set, the total bedspace such as arranged is 3, as shown in Figure 2, illustrate check object to be collected in the image-region of 3 berths to be collected, the thickness of each berth is M, overlaps and be of a size of W between berth.
S4, according to the image-region of the first berth, total bedspace, berth thickness and berth overlay information, then can automatically generate the image-region of the second berth and the 3rd berth, show the image-region of described second berth and the 3rd berth simultaneously；
S5, the measurement parameter of described second berth and the 3rd berth is set to consistent with the measurement parameter of described first berth；
S6, the image in the first berth, the second berth and the 3rd berth collection is carried out splicing along sagital and coronal direction obtain combination image.
Embodiment two:
The invention provides a kind of planing method for inspection object being checked in medical imaging equipment, comprise the following steps:
S1, obtaining the combination image of embodiment one, the spatial resolution of this combination image is higher, utilizes this combination image can the image of more high spatial resolution that check object be planned；
S2, total bedspace of image to be collected is set according to described combination image, for instance total bedspace of image to be collected is 3, respectively the first berth, the second berth and the 3rd berth；
S3, the image-region of described first berth is set, image overlay information between thickness and each berth of each berth is set simultaneously, according to total bedspace of described image to be collected, the image-region of the first berth, each image thickness and each image between image overlay information generate the second berth and the image-region of the 3rd berth, show the image-region of all berths simultaneously；
S4, the measurement parameter of described first berth is set, and the measurement parameter of described second berth and the 3rd berth is set to consistent with the measurement parameter of described first berth；
S5, the first berth, the second berth and the 3rd berth are carried out splicing along sagital and coronal direction obtain combination image.
In another embodiment, it is possible to the image-region of described first berth is first set, then the measurement parameter of described first berth is set, then the image overlay information between thickness and each berth of each berth is set, total bedspace of image to be collected is finally set.Order in the method step of the present invention is not affected by restriction.
Correspondingly, present invention also offers a kind of method utilizing medical imaging system to obtain medical image, described medical imaging system includes the first scanning equipment, the second scanning equipment and examinating couch, described first scanning equipment has a FOV1, the second scanning equipment has the 2nd FOV2, described examinating couch can the first scanning equipment, the second scanning equipment around inspection intracavity move, comprise the following steps:
1) the first scanning equipment or the second scanning equipment is utilized to obtain the general picture image Scout intending inspection area, wherein, described first scanning equipment is used for obtaining general picture image Scout1, described second scanning equipment is used for obtaining general picture image Scout2, using both Scout1, Scout2 the greater as general picture image Scout, specifically, described first scanning equipment is MR equipment or CT equipment, described second scanning equipment is PET device, and described general picture image Scout is scanned equipment by first and obtains；
2) according to general picture image Scout, a FOV1 and the 2nd FOV2, calculate the total bedspace N required to intending inspection area scanning, described total bedspace N obtains mode: according to general picture image Scout, a FOV1, the first scanning equipment that calculates completes the required total bedspace N1 of image to be collected, according to general picture image Scout, the 2nd FOV1, the second scanning equipment that calculates completes the required total bedspace N2 of image to be collected, and the value of described total bedspace N is the greater among both N1, N2；
3) position and the sweep parameter of first berth it is set, and determines position and the sweep parameter of remaining N-1 berth according to total bedspace, and sweep parameter corresponding to the position of described N-1 berth shares the sweep parameter of the first berth at least partly；
4) utilize the first scanning equipment to gather the first picture signal of N number of berth, utilize the second scanning equipment to gather the second picture signal of N number of berth；
5) the first picture signal that N number of berth is corresponding is rebuild, it is thus achieved that the first image of N number of berth, the second picture signal that N number of berth is corresponding is rebuild, it is thus achieved that the second image of N number of berth；
6) the first image of N number of berth is combined, it is thus achieved that intend the first kind image of inspection area, combine the second image of N number of berth, it is thus achieved that intend the Second Type image of inspection area.
Described method also includes the step that first kind image, Second Type image are merged.
The method obtaining medical image of the present invention, has the advantages that
1, the present invention has only to arrange the image-region of the first berth, namely can determine that the image-region of other berths, and this measurement parameter just can be applied in all of berth by the measurement parameter arranging the first berth, operator only needs the total berth quantity setting the first berth and image to be collected can complete the scan plan of big visual field, convenient to operation, greatly improve work efficiency.
2, operator can arbitrarily change image lap and image thicknesses so that the scan plan of axial direction becomes flexible and directly perceived.
3, the planing method of the present invention can give degree of freedom more with operator, it is to avoid owing to broken away view is as the waste of the unreasonable sweep time caused.
The above is the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. the planing method for inspection object being checked in medical imaging equipment, it is characterised in that comprise the following steps:
S1, gather inspection area general picture image；
S2, the image-region of total bedspace of image to be collected, the measurement parameter of the first berth and the first berth is set according to described general picture image, determines the image-region of other berths according to the image-region of total bedspace of image to be collected, the first berth；The measurement parameter measuring parameter sharing the first berth of other berths described；
S3, gather the image of all berths to be collected, and the image of all collections is carried out splicing obtain combination image.
2. the planing method for inspection object being checked in medical imaging equipment according to claim 1, it is characterised in that also include after described step S3:
S4, using described combination image as new general picture image, and return step S2.
3. the planing method for inspection object being checked in medical imaging equipment according to claim 2, it is characterized in that, described step S2 also includes arranging the overlay information between described berth, automatically generates the image-region of other berths described according to the lap between total berth quantity of described image to be collected, the image-region of the first berth and described berth.
4. the planing method for inspection object being checked in medical imaging equipment according to claim 3, it is characterised in that described overlay information includes size overlapping between ratio overlapping between described berth or berth.
5. the planing method for inspection object being checked in medical imaging equipment according to claim 1, it is characterized in that, described medical imaging equipment is MR imaging apparatus or PET-Positron emission computed tomography imaging device or multi-modal magnetic resonance/PET-Positron emission computed tomography imaging device.
6. one kind utilizes the method that medical imaging system obtains medical image, described medical imaging system includes the first scanning equipment, the second scanning equipment and examinating couch, described first scanning equipment has a FOV1, the second scanning equipment has the 2nd FOV2, described examinating couch can the first scanning equipment, the second scanning equipment around inspection intracavity move, it is characterized in that, comprise the following steps:
1) the first scanning equipment or the second scanning equipment is utilized to obtain the general picture image Scout intending inspection area；
2) according to general picture image Scout, a FOV1 and the 2nd FOV2, the total bedspace N required to intending inspection area scanning is calculated；
3) position and the sweep parameter of first berth it is set, and determines position and the sweep parameter of remaining N-1 berth according to total bedspace, and sweep parameter corresponding to the position of described N-1 berth shares the sweep parameter of the first berth at least partly；
4) utilize the first scanning equipment to gather the first picture signal of N number of berth, utilize the second scanning equipment to gather the second picture signal of N number of berth；
5) the first picture signal that N number of berth is corresponding is rebuild, it is thus achieved that the first image of N number of berth, the second picture signal that N number of berth is corresponding is rebuild, it is thus achieved that the second image of N number of berth；
6) the first image of N number of berth is combined, it is thus achieved that intend the first kind image of inspection area, combine the second image of N number of berth, it is thus achieved that intend the Second Type image of inspection area.
7. the method utilizing medical imaging system to obtain medical image according to claim 6, it is characterized in that, described step 2) in total bedspace N obtain in such a way: according to general picture image Scout, a FOV1, the first scanning equipment that calculates completes the required total bedspace N1 of image to be collected, according to general picture image Scout, the 2nd FOV1, the second scanning equipment that calculates completes the required total bedspace N2 of image to be collected, and the value of described total bedspace N is the greater among both N1, N2.
8. the method utilizing medical imaging system acquisition medical image according to claim 6 or 7, it is characterized in that, described first scanning equipment is used for obtaining general picture image Scout1, described second scanning equipment is used for obtaining general picture image Scout2, using both Scout1, Scout2 the greater as general picture image Scout.
9. the method utilizing medical imaging system to obtain medical image according to claim 6, it is characterized in that, described first scanning equipment is MR equipment or CT equipment, and described second scanning equipment is PET device, and described general picture image Scout is scanned equipment by first and obtains.
10. the method utilizing medical imaging system to obtain medical image according to claim 9, it is characterised in that also include the step that first kind image, Second Type image are merged.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103800027A (en) * | 2012-11-14 | 2014-05-21 | 上海联影医疗科技有限公司 | Positron emission computed tomography scanning method and system |
| CN106388843A (en) * | 2016-10-25 | 2017-02-15 | 上海联影医疗科技有限公司 | Medical imaging equipment and scanning method thereof |
| WO2018023380A1 (en) * | 2016-08-02 | 2018-02-08 | 上海联影医疗科技有限公司 | Method and system for image reconstruction |
| CN109567843A (en) * | 2019-02-02 | 2019-04-05 | 上海联影医疗科技有限公司 | A kind of image scanning automatic positioning method, device, equipment and medium |
| US10347014B2 (en) | 2016-08-02 | 2019-07-09 | Shanghai United Imaging Healthcare Co., Ltd. | System and method for image reconstruction |
| US11308662B2 (en) | 2016-08-02 | 2022-04-19 | Shanghai United Imaging Healthcare Co., Ltd. | System and method for image reconstruction |
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