CN105078495A - PET-CT scanning imaging method and related imaging method - Google Patents
PET-CT scanning imaging method and related imaging method Download PDFInfo
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Abstract
The invention discloses a PET-CT scanning imaging method and a related imaging method. The PET-CT scanning imaging method comprises that an area to be imaged is positioned and scanned, the positioning image of the area to be imaged is obtained and displayed, and the displayed positioning image is used for a user to determine the scanning area; the scanning area information which is input by the user is received, the PET total scanning area is determined according to the scanning area information; the PET total scanning area generates a plurality of PET sub scanning areas, each PET sub scanning area corresponds to a PET scanning bed, and the PET sub scanning areas are superposed to cover the PET total scanning area completely,; multi-bed PET scanning is carried out; CT scanning is carried out; and scanning data are reconstructed to obtain PET-CT images. According to the invention, unrelated scanning areas in the PET-CT scanning imaging process are eliminated, the PET-CT scanning time is shortened, and the CT radiation dose received by a patient in the PET-CT scanning imaging process is reduced.
Description
Technical field
The invention belongs to medical imaging field, particularly a kind of PET-CT scan imaging method and dependent imaging method.
Background technology
PET (PositronEmissionTomography) imaging technique utilizes the medicine such as glucose, aminoacid, thymus pyrimidine, the part of receptor or blood flow display agent be labeled as tracer, with anatomic image mode, the metabolism showing body and lesion tissue cell from molecular level, function, blood flow, cell proliferation or receptor distribution situation, for the clinical diagnostic message providing more physiology and pathology aspect, there is excellent performance for helping the early diagnosis of cancer.
But PET image only just show and is labeled the cumulative distribution of atomic nucleus in human body, directly do not reflect human anatomic structure, thus accurately cannot show and be labeled the anatomical position of atomic nucleus in human body.Therefore in order to make doctor better diagnose, there is the imaging device that PET and CT (ComputedTomography) organically combines, as shown in Figure 1, i.e. PET-CT imaging device 100.PET-CT imaging device 100 comprises the PET-CT frame 110, the examinating couch 115 that are arranged on scanning room, and is arranged on operating board 120, the image processing workstations 125 of operation room, and scanning room is connected by network 130 with operation room.PET-CT imaging device uses same examinating couch 115 to load patient and enters cylindrical shape imaging space in PET-CT frame 110, operator is in the checking process of operation room by operating board 120 control PET-CT, complete the collection of data, rebuild, inspect, make film, reflect pathophysiological change and the morphosis of focus, improve the accuracy of diagnosis.Simultaneously can according to configuration image transmitting on image processing workstations 125, carry out more senior image processing operations, with assist physician diagnosis, and provide diagnosis report.
PET-CT is not only PET image and provides accurate anatomical structure location, also provides a kind of preparation method of dampening information fast simultaneously: the dampening information that 1) CT obtains is mapped to the energy (511keV) using Gamma ray in PET imaging.2) dampening information that CT obtains is matched the resolution of PET system.3) CT acquisition dampening information aligns with the physical coordinates system of PET equipment.Although the dampening information using CT image to obtain PET image shortens the time of transmission scan, but add the radiation dose that patient accepts.
When many berths PET-CT scans, usually first complete CT scan, carry out PET scanning afterwards.If need scanning area to comprise the overall region of lung, this region is at PET-CT axially (axis of z direction, PET-CT frame) correspondence about 3.1 to 3.2 PET scanning berths, a PET scans the corresponding PET scanning of berth, after having carried out the scanning of a PET berth, examinating couch mounting patient moves to next berth place (scanning area corresponding by the next berth of patient moves in PET imaging space) and carries out PET scanning.Due to PET Scanning size in prior art fix, the scanning bed interdigit overlapping range of each PET fixes, operation technician can only plan the position in entire scan region, can not adjust the overlapping region between overall PET scanning area, each scanning berth.Therefore, actual needs carry out 4 berths PET scanning, so lung all have up and down sizable region be not diagnosis necessary.These regions also need the transmission scan carrying out attenuation quotient, because this increasing sweep time, and add the dosage of patient's acceptance.When multi-modal PET-CT scanning, the scanning area of CT must be identical with PET scanning area, just may complete correct PET image reconstruction.So additional region (being slightly less than the width of a berth) causes the CT dosage of about 1/3 and diagnoses irrelevant.Meanwhile, this also means the sweep time of nearly 2-5 minute.
Similarly, when carrying out PET single mode scanning imagery, in order to obtain outside the imaging of inside of human body radioelement distribution, need to measure dampening information.In PET scanning, the acquisition of dampening information needs to carry out transmission scan, and transmission scan has extra radiological dose to human body, and the entire scan time is longer.
Single photon emission computerized tomography (SPECT, Single-PhotonEmissioncomputedTomography) image-forming principle is similar with PET, be all carry out imaging to the gamma ray launched in human body, itself and PET technology are referred to as emission computerized tomography technology.Problem when the above-mentioned many berths be present in PET imaging mentioned scan exists equally in SPECT.And identical with the situation of PET-CT, SPECT technology also can be combined with CT, composition SPECT-CT multi-modality imaging form carries out the imaging to human body.PET imaging technique also can combine with magnetic resonance (MR, MagneticResonance) imaging technique, and composition multi-modality imaging system, also exists the problem corresponded in PET scanning imagery in PET-MR scanning imagery.
The defect of prior art causes to cover specific region, and the scanning of different physiological condition patient diagnosis extraneous areas is caused to time lengthening and/or produces unnecessary dosage thus.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of PET-CT scan imaging method and dependent imaging method, solve in prior art because in the scanning imagery that causes of scanning extraneous areas sweep time prolongation, meanwhile cause cause radiological dose to increase to extraneous areas imaging.
In order to solve the problem, the invention provides a kind of PET-CT scan imaging method, comprising the steps:
Treat imaging region and position scanning, obtain and show the location picture in described region to be imaged, the location picture of described display is used for determining scanning area for user;
Receive the scanning area information of user's input, determine the total scanning area of PET according to described scanning area information;
By the total scanning area of described PET, generate multiple PET scanning area, the corresponding PET of each PET scanning area scans berth, the total scanning area of the described PET of complete covering after each PET scanning area superposition;
Carry out CT scan;
Carry out many berths PET to scan; Rebuild by scan-data and obtain PET-CT image.
Further, the scanning area information of described user's input drags picture to obtain by mouse on the picture of described location.
Further, the interface of display described location picture shows the total scanning area frame of default PET, and described default PET total scanning area frame is a scalable rectangle frame, and its every bar limit is all removable, and can overall convergent-divergent;
The scanning area information of described user's input is obtained by the end-state of described scalable rectangle frame.
Further, the scanning area information of described reception user input also comprises:
Receive the PET scanning area number of user's input or adjacent PET scanning area overlapping range;
Describedly generate in multiple PET scanning area step by the total scanning area of PET, described PET scanning area is determined jointly by the total scanning area of described PET and described PET scanning area number or described adjacent PET scanning area overlapping range.
Further, the axial length of adjacent described PET scanning area overlapping range is 15% to 50% of described PET scanning area axial length.
Further, described PET scanning area is shown as PET scanning area frame on the interface of display location picture, and described PET scanning area frame is configured to move vertically.
In order to solve the problem, present invention also offers a kind of PET-CT scanned imagery device, comprising:
Location scanning module, positions scanning for treating imaging region, obtains and shows the location picture in described region to be imaged, and the location picture of described display is used for determining scanning area for user;
Information receiving module, is connected with described location scanning module, for receiving the scanning area information of user's input, determines the total scanning area of PET according to described scanning area information;
Subregion generation module, be connected with described information receiving module, for by the total scanning area of described PET, generate multiple PET scanning area, the corresponding PET of each PET scanning area scans berth, the total scanning area of the described PET of complete covering after each PET scanning area superposition;
Scan module, is connected with described subregion generation module, and for carrying out, many berths PET scans, CT scan;
Rebuilding module, be connected with described scan module, obtaining PET-CT image for being rebuild by scan-data.
Present invention also offers a kind of PET-MR scan imaging method, comprise the steps:
Treat imaging region and position scanning, obtain and show the location picture in described region to be imaged, the location picture of described display is used for determining scanning area for user;
Receive the scanning area information of user's input, determine the total scanning area of PET according to described scanning area information;
By the total scanning area of described PET, generate multiple PET scanning area, the corresponding PET of each PET scanning area scans berth, the total scanning area of the described PET of complete covering after each PET scanning area superposition;
Carry out MR scanning;
Carry out many berths PET to scan; Rebuild by scan-data and obtain PET-MR image.
Present invention also offers a kind of SPECT scan imaging method, comprise the steps:
Treat imaging region and position scanning, obtain and show the location picture in described region to be imaged, the location picture of described display is used for determining scanning area for user;
Receive the scanning area information of user's input, determine the total scanning area of SPECT according to described scanning area information;
By the total scanning area of described SPECT, generate the sub-scanning area of multiple SPECT, the corresponding SPECT of the sub-scanning area of each SPECT scans berth, the total scanning area of the described SPECT of complete covering after the superposition of each SPECT scanning area;
Carry out transmission scan;
Carry out many berths SPECT to scan; Rebuild by scan-data and obtain SPECT image.
Present invention also offers a kind of SPECT-CT scan imaging method, comprise the steps:
Treat imaging region and position scanning, obtain and show the location picture in described region to be imaged, the location picture of described display is used for determining scanning area for user;
Receive the scanning area information of user's input, determine the total scanning area of SPECT according to described scanning area information;
By the total scanning area of described SPECT, generate the sub-scanning area of multiple SPECT, the corresponding SPECT of the sub-scanning area of each SPECT scans berth, the total scanning area of the described SPECT of complete covering after the superposition of each SPECT scanning area;
Carry out CT scan;
Carry out many berths SPECT to scan; Rebuild by scan-data and obtain SPECT-CT image.
Present invention also offers a kind of PET scan imaging method, comprise the steps:
Treat imaging region and position scanning, obtain and show the location picture in described region to be imaged, the location picture of described display is used for determining scanning area for user;
Receive the scanning area information of user's input, determine the total scanning area of PET according to described scanning area information;
By the total scanning area of described PET, generate multiple PET scanning area, the corresponding PET of each PET scanning area scans berth, the total scanning area of the described PET of complete covering after each PET scanning area superposition;
Carry out transmission scan;
Carry out many berths PET to scan; Rebuild by scan-data and obtain PET image.
Compared with prior art, the advantage of technical solution of the present invention is:
Technical scheme of the present invention eliminates the increase to the CT radiation dose that sweep time extends and/or patient accepts that the scanning of extraneous areas causes in PET-CT scanning imagery and dependent imaging method (PET-MR scanning imagery, SPECT scanning imagery, SPECT-CT scanning imagery, PET-CTPET-CT scanning imagery and PET scanning imagery).
Accompanying drawing explanation
Fig. 1 is prior art PET-CT device structure schematic diagram;
Fig. 2 is that location of the present invention is as schematic diagram;
Fig. 3 for the present invention is based on location as on determine scanning area schematic diagram;
Fig. 4 is the scanning area schematic diagram that the present invention does not comprise location picture;
Fig. 5 is the present invention's sub-scanning area axial centre region overlay imaging key area schematic diagram;
Fig. 6 is PET-CT scanned imagery device structural representation of the present invention.
Detailed description of the invention
In order to enable above-mentioned purpose of the present invention, feature, advantage more aobvious and understandable, below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described.
embodiment one
Disclose a kind of PET-CT scan imaging method, comprise the steps:
S101, treats imaging region and positions scanning, obtains and shows the location picture in described region to be imaged, and the location picture of described display is used for determining scanning area for user;
S102, receives the scanning area information of user's input, determines the total scanning area of PET according to described scanning area information;
S103, by the total scanning area of described PET, generates multiple PET scanning area, and the corresponding PET of each PET scanning area scans berth, the total scanning area of the described PET of complete covering after each PET scanning area superposition;
S104, carries out CT scan;
S105, carries out many berths PET and scans; S106, is rebuild by scan-data and obtains PET-CT image.
Below each step is described in detail:
First, perform step S101, treat imaging region and position scanning, obtain and show the location picture in described region to be imaged, the location picture of described display is used for determining scanning area for user.Refer to Fig. 2, it is be treated as the location obtained after zone location scanning as 200 schematic diagrams, locating in figure as 200 is the image (also can for sagittal view picture) of coronalplane, direction a is the axial direction (namely the axial direction in this patent refers to human body long axis direction) in region to be imaged, scanning area for carrying out scanning planning further, is determined for user as 200 in described location.
Perform step S102 afterwards, receive the scanning area information of user's input, determine the total scanning area of PET according to described scanning area information.When PET region to be imaged is larger (as whole body imaging or trunk imaging etc.), due to the restriction of pet detector axial width, the PET scanning planning carrying out many berths on the picture of location is needed when scanning planning, determine the scanning area of each PET berth, carry out the many berth scanning of PET afterwards.When in prior art, many berths PET-CT scans, PET each berth Scanning size, PET each berth overlapping range, PET entire scan region are all fixing cannot adjusting.Therefore for the situation of actual area-of-interest slightly larger than an integer berth, as: when actual area-of-interest is 3.1 to 3.2 PET scanning berths, the scope of 4 berths must be scanned.For this situation, the actual range of PET scanning is greater than the scope of area-of-interest, needs to gather more data when scanning, and it is longer to carry out rebuilding time of PET image by the data collected.
Step S102 comprises more specifically: when carrying out PET scanning planning, carried out the input of scanning area information by user, scanning area information is used for determining the total scanning area of PET.As shown in Figure 3, user is in location as 200 interfaces being determined the total scanning area 300 of PET, and being namely the actual interested region of user, is also the region of finally carrying out PET image reconstruction.
User location as 200 on determine that the method for the total scanning area of PET 300 is: display described location as on the interface of 200, total adopt mouse drag the mode of picture location as 200 on drag the rectangle frame drawing and represent PET scanning area 300, be exactly drag the total scanning area 300 of the coverage PET painting into rear rectangle frame.
User location as 200 on determine that the another kind of mode of the total scanning area of PET 300 is: on the picture of location, be preset with normal size, represent the rectangle frame (not shown) of the total scanning area of PET, the rectangle frame preset is scalable formula rectangle frame, the every limit of its rectangle frame is all removable, and can carry out overall convergent-divergent.Can be undertaken dragging the position of rectangle frame by mouse afterwards to move, and drag rectangle frame corner and carry out the mode of convergent-divergent to determine the total scanning area of PET.The scanning area information of user's input is obtained by the end-state of scalable rectangle frame.
Perform step S103 afterwards, by the total scanning area of described PET, generate multiple PET scanning area, the corresponding PET of each PET scanning area scans berth, the total scanning area of the described PET of complete covering after each PET scanning area superposition.As shown in Figure 3, after user confirms the total scanning area 300 of PET, generated the PET scanning area 30 of multiple a vertically arrangement by the total scanning area of PET 300, each PET scanning area 30 represents a PET and scans berth, for determining the scanning area of corresponding PET berth.Each PET scanning area 30 coverage is equal, PET scanning area 30 is for determining that corresponding PET scans berth in the scanning starting position of axial a, scan end position to plan the scanning area of each berth, for ensureing the image quality of PET berth marginal position, between adjacent PET scanning area 30, there is lap.The total scanning area 300 of complete covering PET after each PET scanning area superposition.
The method generating PET scanning area 30 by the total scanning area of PET 300 has a variety of, scope due to PET scanning area is fixing (being determined by pet detector axial length), after user determines the total scanning area of PET, each PET scanning area has certain overlapping in the axial direction.
A kind of method generating PET scanning area 30 by the total scanning area of PET 300 is: interval according to pre-set adjacent PET scanning area overlapping range, first determined the minimum PET scanning area number needed by minimum overlapping range value, determine actual adjacent PET scanning area overlapping range (another each overlapping range is equal) by PET scanning area number afterwards.Such as, if the axial length of the adjacent PET scanning area overlapping range preset is minimum for 8cm, treat that the total scanning area of PET is 1.2 meters.First corresponding to overlapping region axial length is the minimum PET scanning area number that 8cm finds needs, if minimum needs 4 PET scanning areas here.If scope corresponding to 4 PET scanning areas has been greater than region to be scanned, then adjust the scope of actual overlapping region in existing 4 PET scanning areas, namely on the basis of 8cm before, carry out automatic/hand adjustment.If scope corresponding to 4 PET scanning areas is less than region to be scanned, then must increase a berth.Overlapping range between each can adjust to new value by automatic/hand.
The another kind of method by PET total scanning area generation PET scanning area is: when receiving the scanning area information that user inputs, user specifies the overlapping range of the number of PET scanning area or adjacent PET scanning area further, determines PET scanning area 30 by the overlapping range of the total scanning area of PET 300 and the PET scanning area number of specifying or adjacent PET scanning area.Such as, when the axial length selecting the total scanning area 300 of PET is 1.2 meters, if the axial broadening of PET scanning area 30 is 40cm, the number that user inputs PET scanning area is 4, then identical with each PET scanning area for ensureing the coverage of the total scanning area of PET, the axial length of each adjacent PET scanning area overlapping range is 13.3cm; When to input PET word scanning area overlapping range be 8cm to user, identical with each PET scanning area for ensureing the coverage of the total scanning area of PET, the number of PET scanning area is configured to 4, and front 3 the PET scanning area overlapping range axial lengths of preferential configuration are 8cm, between latter two PET scanning area, overlapping range axial length adjusts, becomes 32cm.
The quality of overlapping range size between adjacent PET scanning area 30 on the final PET image generated has impact, and please with further reference to Fig. 4, it is the scanning planning schematic diagram that Fig. 3 does not comprise location picture.Each PET scanning area 30 broadening on axial a is all equal, is L.Have overlapping region 35 between two adjacent PET scanning areas 30, overlapping region 35 length on axial a is D.In the total scanning area 300 of PET, picture quality is axially as shown in broken line on the left of Fig. 4 400, and b is the positive direction that picture quality is good, and the axial centre area image of each PET berth is best in quality.For ensureing the quality of PET image, preferably, when generating PET scanning area 30, the axial length D of two adjacent PET scanning area overlapping ranges 35 is 15% to 50% of the axial broadening L of PET scanning area 30.
The present embodiment step S103 also comprises: PET scanning area is shown as PET scanning area frame on the interface of display location picture, and PET scanning area frame is configured to move vertically.As shown in Figure 5, need in some cases to ensure that key area (is generally heart or other vitals, important joint) picture quality, wish the key area 500 of the axial centre region overlay imaging making PET scanning area frame, and scan in planning process at actual PET, be difficult to ensure that key area 500 is just in time positioned at the axial centre position of PET scanning area frame 30 to reach best image quality, PET scanning area frame is configured to move vertically, then can guarantee under goal of the invention prerequisite of the present invention, ensure that the picture quality of key area simultaneously.
Perform step S104 afterwards, carry out CT scan, obtain CT scan data;
Step S105, carries out many berths PET and scans, obtain PET scan-data;
And step S106, scanned the scan-data, the CT scan data that obtain by many berths PET in step S104, step S105, rebuild and obtain PET-CT image.Here PET-CT image can be independent PET image, CT image, also can be PET, CT fusion image.
Here be the technological means that those skilled in the art commonly use for the concrete scanning process of PET and image rebuilding method, no longer separately describe.
The PET-CT scan imaging method that the present embodiment provides, when carrying out PET-CT scanning, because the scanning area of CT must be identical with PET scanning area, if utilize the method for prior art, then PET scanning area is greater than actual area-of-interest, the CT scan region that result in PET-CT is excessive, and the radiation dose of required CT scan is corresponding higher.Adopt technical scheme of the present invention, eliminate the scanning for extraneous areas, decrease sweep time, reduce the radiation dose that patient accepts CT.
On the basis of above PET-CT scan imaging method, additionally provide a kind of PET-CT scanned imagery device, comprising:
Location scanning module 610, positions scanning for treating imaging region, obtains and shows the location picture in described region to be imaged, and the location picture of described display is used for determining scanning area for user;
Information receiving module 620, is connected with described location scanning module, for receiving the scanning area information of user's input, determines the total scanning area of PET according to described scanning area information;
Subregion generation module 630, be connected with described information receiving module, for by the total scanning area of described PET, generate multiple PET scanning area, the corresponding PET of each PET scanning area scans berth, the total scanning area of the described PET of complete covering after each PET scanning area superposition;
Scan module 640, is connected with described subregion generation module, and for carrying out, many berths PET scans, CT scan;
Rebuilding module 650, be connected with described scan module, obtaining PET-CT image for being rebuild by scan-data.
The implementation process of PET-CT scanned imagery device with reference to the implementation process of PET-CT scan imaging method of the present invention, can repeat here no longer one by one.
The technical scheme of PET-CT scan imaging method, PET-CT scanned imagery device in the present embodiment, eliminate the scanning imagery to irrelevant scanning area in PET-CT scanning imagery, decrease the PET-CT scanning imagery time, and decrease the CT dosage that in scanning process, patient accepts.
embodiment two
Present embodiment discloses a kind of PET-MR scan imaging method, comprise the steps:
S201, treats imaging region and positions scanning, obtains and shows the location picture in described region to be imaged, and the location picture of described display is used for determining scanning area for user;
S202, receives the scanning area information of user's input, determines the total scanning area of PET according to described scanning area information;
S203, by the total scanning area of described PET, generates multiple PET scanning area, and the corresponding PET of each PET scanning area scans berth, the total scanning area of the described PET of complete covering after each PET scanning area superposition;
S204, carries out MR scanning;
S205, carries out many berths PET and scans;
S206, is rebuild by scan-data and obtains PET-MR image.
Wherein, the implementation process of step S201 to step S206 can the implementation process of step S101 to step S106 in reference example one.
In the technical scheme of embodiment two and embodiment one, the distinctive points of technical scheme is: step S201 is compared to step S101, and the location picture in embodiment two adopts MR location scanning to obtain usually, and location picture is MR image.But due to the time comparatively CT location scanning overlong time of MR location scanning, mode obtains locating picture optical device also can be adopted to take pictures etc.Step S204 is compared to step S104, and what embodiment two adopted is MR scanning, and except PET scanning, the scanning imagery mode of another mode is different.The PET scan-data that the MR scan-data obtained by step S204 in step S206 and step S205 obtain, rebuilds and obtains PET-MR image.
Step S205 carry out many berths PET scan and step S204 to carry out the order of MR scanning interchangeable, namely can scan and carry out many berths PET again and scan by advanced row MR.MR scanning can derive the correction coefficient of PET image, to correct the data that PET emission scan obtains.
Step S204 is to step S206, and PET-MR scanning wherein, the process of rebuilding are those skilled in the art's universal method, are not described in detail here.
The technical scheme of the present embodiment PET-MR scan imaging method, eliminates the scanning of irrelevant scanning area in PET-MR, decreases PET-MR sweep time.
embodiment three
Present embodiment discloses a kind of SPECT scan imaging method, comprise the steps:
S301, treats imaging region and positions scanning, obtains and shows the location picture in described region to be imaged, and the location picture of described display is used for determining scanning area for user;
S302, receives the scanning area information of user's input, determines the total scanning area of SPECT according to described scanning area information;
S303, by the total scanning area of described SPECT, generates the sub-scanning area of multiple SPECT, and the corresponding SPECT of the sub-scanning area of each SPECT scans berth, the total scanning area of the described SPECT of complete covering after the superposition of each SPECT scanning area;
S304, carries out transmission scan;
S305, carries out many berths SPECT and scans; S306, is rebuild by scan-data and obtains SPECT image.
SPECT scan imaging method and PET scan imaging method similar, the implementation process of step S301 to step S306 can the implementation process of step S101 to step S106 in reference example one.Distinctive points is only that in step S301, location picture can be obtained by SPECT location scanning.The scanning area (total scanning area, sub-scanning area) that step S302, step S303 relate to all corresponds to SPECT scanning area.Step S305 adopts many berths SPECT to scan, and owing to being single SPECT scanning imagery, therefore also carries out the transmission scan of step S304, and finally obtains SPECT reconstruction image in step S306.Step S304, step S305, step S306 are this area current techique, are not described in detail here.
The technical scheme of SPECT scan imaging method in the present embodiment, eliminates the scanning of the irrelevant scanning area in SPECT scanning imagery, decreases the SPECT scanning imagery time, and greatly reduce the sweep time of transmission scan.
embodiment four
Present embodiment discloses a kind of SPECT-CT scan imaging method, comprise the steps:
S401, treats imaging region and positions scanning, obtains and shows the location picture in described region to be imaged, and the location picture of described display is used for determining scanning area for user;
S402, receives the scanning area information of user's input, determines the total scanning area of SPECT according to described scanning area information;
S403, by the total scanning area of described SPECT, generates the sub-scanning area of multiple SPECT, and the corresponding SPECT of the sub-scanning area of each SPECT scans berth, the total scanning area of the described SPECT of complete covering after the superposition of each SPECT scanning area;
S404, carries out CT scan;
S405, carries out many berths SPECT and scans; S406, is rebuild by scan-data and obtains SPECT-CT image.
In embodiment four, SPECT-CT scan imaging method can the PET-CT scan imaging method of reference example one, its difference is, step S401 location picture can be obtained by SPECT location scanning, the scanning area (total scanning area, sub-scanning area) related in step S402, step S403 all correspondence is expressed as SPECT scanning area, step S404 to step S406 is those skilled in the art's current techique means, is not described in detail here.
The technical scheme of the present embodiment SPECT-CT scan imaging method, eliminates the scanning of the irrelevant scanning area in SPECT-CT, decreases SEPCT-CT sweep time, and decreases the CT scan dosage of patient's acceptance.
embodiment five
Present embodiment discloses a kind of PET scan imaging method, comprise the steps:
S501, treats imaging region and positions scanning, obtains and shows the location picture in described region to be imaged, and the location picture of described display is used for determining scanning area for user;
S502, receives the scanning area information of user's input, determines the total scanning area of PET according to described scanning area information;
S503, by the total scanning area of described PET, generates multiple PET scanning area, and the corresponding PET of each PET scanning area scans berth, the total scanning area of the described PET of complete covering after each PET scanning area superposition;
S504, carries out transmission scan;
S505, carries out many berths PET and scans; S506, is rebuild by scan-data and obtains PET image.
The PET scan imaging method of embodiment five can the PET-CT scan imaging method of reference example one, distinctive points is only, owing to being PET single mode scanning imagery, do not need to carry out extra CT scan, the substitute is step S504 and carry out transmission scan, the technical scheme of step S504 to step S506 is this area current techique means, is not described in detail here.
The technical scheme of the present embodiment PET scan imaging method, eliminates the scanning of the irrelevant scanning area in PET scanning imagery, decreases the sweep time of PET sweep time, particularly transmission scan.
Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little amendment and perfect, therefore protection scope of the present invention is when being as the criterion of defining with claims.
Claims (10)
1. a PET-CT scan imaging method, is characterized in that, comprises the steps:
Treat imaging region and position scanning, obtain and show the location picture in described region to be imaged, the location picture of described display is used for determining scanning area for user;
Receive the scanning area information of user's input, determine the total scanning area of PET according to described scanning area information;
By the total scanning area of described PET, generate multiple PET scanning area, the corresponding PET of each PET scanning area scans berth, the total scanning area of the described PET of complete covering after each PET scanning area superposition;
Carry out CT scan;
Carry out many berths PET to scan;
Rebuild by scan-data and obtain PET-CT image.
2. PET-CT scan imaging method as claimed in claim 1, is characterized in that, the scanning area information of described user's input drags picture to obtain by mouse on the picture of described location.
3. PET-CT scan imaging method as claimed in claim 1, it is characterized in that, the interface of display described location picture shows the total scanning area frame of default PET, and described default PET total scanning area frame is a scalable rectangle frame, its every bar limit is all removable, and can overall convergent-divergent; The scanning area information of described user's input is obtained by the end-state of described scalable rectangle frame.
4. PET-CT scan imaging method as claimed in claim 2 or claim 3, is characterized in that, the scanning area information of described reception user input also comprises:
Receive the PET scanning area number of user's input or adjacent PET scanning area overlapping range;
Describedly generate in multiple PET scanning area step by the total scanning area of PET, described PET scanning area is determined jointly by the total scanning area of described PET and described PET scanning area number or described adjacent PET scanning area overlapping range.
5. PET-CT scan imaging method as claimed in claim 2 or claim 3, it is characterized in that, the axial length of adjacent described PET scanning area overlapping range is 15% to 50% of described PET scanning area axial length.
6. PET-CT scan imaging method as claimed in claim 2 or claim 3, is characterized in that, described PET scanning area is shown as PET scanning area frame on the interface of display location picture, and described PET scanning area frame is configured to move vertically.A kind of PET-MR scan imaging method, is characterized in that, comprise the steps:
Treat imaging region and position scanning, obtain and show the location picture in described region to be imaged, the location picture of described display is used for determining scanning area for user;
Receive the scanning area information of user's input, determine the total scanning area of PET according to described scanning area information;
By the total scanning area of described PET, generate multiple PET scanning area, the corresponding PET of each PET scanning area scans berth, the total scanning area of the described PET of complete covering after each PET scanning area superposition;
Carry out MR scanning;
Carry out many berths PET to scan; Rebuild by scan-data and obtain PET-MR image.
7. a SPECT scan imaging method, is characterized in that, comprises the steps:
Treat imaging region and position scanning, obtain and show the location picture in described region to be imaged, the location picture of described display is used for determining scanning area for user;
Receive the scanning area information of user's input, determine the total scanning area of SPECT according to described scanning area information;
By the total scanning area of described SPECT, generate the sub-scanning area of multiple SPECT, the corresponding SPECT of the sub-scanning area of each SPECT scans berth, the total scanning area of the described SPECT of complete covering after the superposition of each SPECT scanning area;
Carry out transmission scan;
Carry out many berths SPECT to scan; Rebuild by scan-data and obtain SPECT image.
8. a SPECT-CT scan imaging method, is characterized in that, comprises the steps:
Treat imaging region and position scanning, obtain and show the location picture in described region to be imaged, the location picture of described display is used for determining scanning area for user;
Receive the scanning area information of user's input, determine the total scanning area of SPECT according to described scanning area information;
By the total scanning area of described SPECT, generate the sub-scanning area of multiple SPECT, the corresponding SPECT of the sub-scanning area of each SPECT scans berth, the total scanning area of the described SPECT of complete covering after the superposition of each SPECT scanning area;
Carry out CT scan;
Carry out many berths SPECT to scan; Rebuild by scan-data and obtain SPECT-CT image.
9. a PET scan imaging method, is characterized in that, comprises the steps:
Treat imaging region and position scanning, obtain and show the location picture in described region to be imaged, the location picture of described display is used for determining scanning area for user;
Receive the scanning area information of user's input, determine the total scanning area of PET according to described scanning area information;
By the total scanning area of described PET, generate multiple PET scanning area, the corresponding PET of each PET scanning area scans berth, the total scanning area of the described PET of complete covering after each PET scanning area superposition;
Carry out transmission scan;
Carry out many berths PET to scan; Rebuild by scan-data and obtain PET image.
10. a PET-CT scanned imagery device, is characterized in that, comprising:
Location scanning module, positions scanning for treating imaging region, obtains and shows the location picture in described region to be imaged, and the location picture of described display is used for determining scanning area for user;
Information receiving module, is connected with described location scanning module, for receiving the scanning area information of user's input, determines the total scanning area of PET according to described scanning area information;
Subregion generation module, be connected with described information receiving module, for by the total scanning area of described PET, generate multiple PET scanning area, the corresponding PET of each PET scanning area scans berth, the total scanning area of the described PET of complete covering after each PET scanning area superposition;
Scan module, is connected with described subregion generation module, and for carrying out, many berths PET scans, CT scan;
Rebuilding module, be connected with described scan module, obtaining PET-CT image for being rebuild by scan-data.
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