CN101574264B - Multiple-imaging system with rotatable patient table and imaging method - Google Patents
Multiple-imaging system with rotatable patient table and imaging method Download PDFInfo
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- CN101574264B CN101574264B CN2009101189236A CN200910118923A CN101574264B CN 101574264 B CN101574264 B CN 101574264B CN 2009101189236 A CN2009101189236 A CN 2009101189236A CN 200910118923 A CN200910118923 A CN 200910118923A CN 101574264 B CN101574264 B CN 101574264B
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Abstract
The invention discloses a multiple-imaging system with a rotatable patient table and an imaging method thereof. The multiple-imaging system comprises a first imaging system for forming a first image, and a second imaging system for forming a second image, a bedplate used for supporting examinees, a scanning bed and a rotation device, wherein, the bedplate is supported on the scanning bed in a rotatable mode, and the scanning bed is fixed on the rotation device so that the scanning bed can selectively rotate to the first imaging system and the second imaging system surrounding the rotation device for scanning.
Description
The application is to be that JIUYUE 30, application number in 2006 are 200610140110.3, are entitled as the dividing an application of patent application of " multiplicated imaging system " applying date.
Technical field
The present invention relates to the armarium technical field, be specifically related to multiplicated imaging system.
Background technology
As everyone knows; CT (Computerized Tomography; Computerized tomography) equipment is based on and utilizes human external emission source emission X ray to penetrate the human body different tissues, and the difference of the X ray attenuation through feedback forms images, thus the armarium that carries out medical diagnosis on disease; NM (NuclearMedicine; Nuclear medicine) equipment is to utilize to be injected into the difference of the intravital radionuclide tracer of people at the different tissues aggregate concentration; Radiate the varying strength gamma-rays; Thereby the detection gamma intensity obtains radiosiotope and forms images in the distribution of human organ, carries out the armarium of medical diagnosis on disease; MRI (Magnetic Resonance Imaging; Nuclear magnetic resonance) equipment image-forming principle; Be to utilize the human external emission of magnetic field magnetic line of force to penetrate the different human body tissue, the difference of magnetic line of force attenuation through feedback forms images, thus the armarium that carries out medical diagnosis on disease.In the Medical Equipment field; CT equipment and MRI equipment are commonly referred to as anatomy imaging equipment; NM equipment is commonly referred to as functional imaging equipment; Mainly comprise PET (Positron Emission Tomography, positron emission fault) equipment, SPECT (Single Photon Emission Computed Tomography, single photon emission computed tomography) equipment.
Because the difference of these medical diagnostic equipment imaging mechanisms, their application also has characteristics separately.The resolution of CT equipment and MRI equipment imaging is high, and the positional information of focus can be provided accurately, but when limitation is to have only pathological tissues that certain variation is structurally arranged, i.e. the middle and late stage of disease, CT equipment and MRI equipment could detect through imaging.And nuclear medicine facility PET equipment, SPECT equipment; The characteristics that then have high sensitivity, high specific; Because the distribution of gamma-rays tracer and the metabolism situation of focus are closely related, therefore can under the situation that does not promptly have in early days obvious deformation of disease, focus be diagnosed accurately, be widely used in tumor, cardio-cerebral diseases; But it is not high enough that shortcoming is resolution, and the focus accurate in locating is not so good as CT or MRI.Can find out that from the characteristics separately of the said equipment anatomy imaging equipment and functional imaging equipment have the characteristics of mutual supplement with each other's advantages.In the medical science practical application, sometimes both need disease can obtain lesion image timely and accurately in early days, need accurately locate focus through image again, for treatment provides better position and shape information.Therefore, aforementioned anatomy imaging equipment and functional imaging equipment are organically blent, be the multiple image forming apparatus that the clinical fusion imaging function can be provided.
For multiple image forming apparatus, want each sub system images is merged exactly, the image space benchmark of each image must be consistent so.In the prior art, the imaging device imaging process all be patient lies on examinating couch, utilize bed board to move forward and backward the circular hole that passes frame with the patient and carry out scanning imagery.Because patient lies is on examinating couch, bed board will carry out stretching motion, and under the effect of patient's gravity, bed board produces trickle distortion and is inevitable; Therefore require the patient when different subsystem scans, for making the same image imaging position of acquisition under the situation of bed body deformability, the patient moving track must be consistent.
In the prior art, multiple image forming apparatus all is that the frame of each sub-systems is arranged side by side at axis direction, and the patient once passes through each sub-systems on examinating couch; Like this because the elongation of bed board bed board through each sub-systems the time is different; The stress of bed board is different, and is obvious, because the deflection of bed board is different; The patient also produces inconsistent at the movement locus of each sub-systems; Cause corresponding image space benchmark inconsistent, it is also inevitable inaccurate to merge the image information of coming out, thereby can not reference accurately be provided for clinical diagnosis.On the other hand; Each sub-systems plant maintenance of forming multiplicated imaging system also is a problem; Need when safeguarding each sub-systems is separated certain distance so that the carrying out of maintenance work; Need each subsystem be returned to original registration position again after the maintenance, become another major issue that must pay attention to of multiplicated imaging system.
Existing multiplicated imaging system is to be formed by anatomy imaging equipment and functional imaging cluster tool basically, such as PET/CT.Patient's imaging device in testing process can not move, and accomplishes scanning through moving of bed and bed board.So just must increase the length of bed board, and the length of bed board increases, not only bring difficulty and cost to increase, also cause the excessive problem of scanning bed body deformability amount easily to manufacturing.
For multiplicated imaging system, for the effectiveness of the image co-registration that can guarantee the later stage, in the time of must guaranteeing that the patient is scanned in multiplicated imaging system, the deflection of bed body is consistent at the detector position place.Have only deflection consistent, the image after could guaranteeing to merge is accurately, can bring positive meaning to diagnosis.Be illustrated in fig. 1 shown below, the patient is when doing PET equipment and CT device scan, because the bed board elongation is inconsistent; Cause bed board inconsistent in the distortion at PET scanning plane place and CT scan face place; Y1 is not equal to YZ, and the image after can not guaranteeing to merge is accurately, gives the diagnosis deleterious impact.
To sum up, can be clear and definite draw be to guarantee that the movement locus of patient when different sub-systems scan is consistent, and the service equipment front and back make each subsystem invariant position, constituted two keys of multiple image forming apparatus.
Multiplicated imaging system is that the continuous development along with modern medicine occurs, because cost is higher, for present medical institutions, it is still very expensive to buy the ready-made multiplicated imaging system of a cover.And generally all there has been single anatomy imaging equipment in general medical institutions, as purchasing multiplicated imaging system again, are equivalent to and have increased by one overlap anatomy imaging equipment, not only increase equipment cost, but also cause the reduction of the utilization rate of equipment and installations of anatomy imaging equipment.
Summary of the invention
The present invention provides a kind of multiplicated imaging system, and it can solve and guarantee that the movement locus one of patient when the different sub-systems scan service equipment front and back of making peace make each subsystem position these crucial difficult problems that remain unchanged.In addition, can on medical institutions existing single medical imaging device basis, be extended to multiple image forming apparatus easily, reduce the equipment purchase cost of medical institutions greatly, improve the utilization rate of medical imaging device according to multiplicated imaging system of the present invention.The global function that can solve each imaging device is independently used, and can guarantee that again the multiple image forming apparatus combination realizes the fusion of imaging function.
According to an aspect of the present invention, a kind of multiplicated imaging system comprises: first imaging system that is used to form first image; Be used to form second imaging system of second image; Be used to support those who are investigated's bed board; Scanning bed, said bed board be supported on movably scanning bed on; And tumbler, said scanning bed being fixed on the said tumbler, so that said scanning bed first imaging system and second imaging system that selectively turns to around tumbler, to scan.
Description of drawings
Fig. 1 describes bed board to become the inconsistent sketch map of inconsistent its modification amount of elongation.
Fig. 2 is a PET/CT operation principle sketch map of describing the band rotating base.
Fig. 3 is that the parts of describing multiplicated imaging system are formed sketch map.
Fig. 4 describes base drive system sketch map.
Fig. 5 describes two-shipper tool positioning set installation site sketch map.
Fig. 6 describes mechanical positioning external member sketch map.
The specific embodiment
Be illustrated in fig. 2 shown below, first imaging system and second imaging system are installed on the rotating base of the present invention, and first imaging device is in the position near the patient; Second imaging device is in the position away from the patient, and when carrying out the scanning of first imaging system, the elongation of bed board is A; After first imaging system was accomplished scanning, rotating foundation device was along certain direction Rotate 180 degree, at this moment; Second imaging device is in the position near the patient; Through both relations of accurate Calculation before installing, in the manufacture process it is installed in suitable position in the rotary apparatus, in the time of can guaranteeing to carry out the scanning of second imaging system; The elongation of bed board still is A, and this has just guaranteed the concordance of distortion in two imaging systems of bed body.
In certain embodiments, replace bed or scanning bed, can adopt movable trolleys, support movably, movably patient support device etc.
Adjustable movable base mainly is made up of chassis, external tooth type floating bearing, pinion, axle, shaft coupling, worm type of reduction gearing other types decelerators such as (or) fan conic reducers, strap brake device motor, deceleration system installing rack, chassis seating etc.; The chassis is connected in the outer ring of external tooth type floating bearing through bolt and shop bolt; External tooth type floating bearing inner ring is connected on the chassis seating through bolt and shop bolt; The deceleration system installing rack is used for installing worm type of reduction gearing, pinion, axle, shaft coupling; Flange on strap brake device motor and the worm type of reduction gearing shell is used Bolt Connection, and deceleration system installing rack and chassis seating weld or use Bolt Connection.External tooth engagement (like Fig. 4) on the outer ring of pinion and external tooth type floating bearing, strap brake device motor is through the rotation on deceleration system and pinion and external tooth type floating bearing drive chassis like this.The appropriate location fixed capacity formula of upper surface is near the switch installing rack in the outer ring of external tooth type floating bearing, near the suitable fixed-site capacitive approach switch of switch installing rack.Appropriate location on inner ring fixedly has the metal derby of constant slope.Capacitive approach switch belongs to a kind of position sensor with switching value output; Its gage outfit normally constitutes a pole plate of capacitor; And another pole plate is of object itself, when object is shifted near switch, and object and change near the dielectric constant of switch; Make the circuit state link to each other with gage outfit also change, thus just turning on and off of controllable switch thereupon.Connect encoder (like Fig. 4) at the worm screw other end; When chassis rotation near 160 degree, capacitive approach switch is near the metal derby (like Fig. 4) with certain slope, changes near the dielectric constant of switch; Make the circuit state that links to each other with gage outfit also change thereupon; Send signal controlling strap brake device motor together with encoder and slow down, when the chassis rotates to 180 degree, capacitive approach switch sends signal controlling strap brake device motor to be stopped and braking.Owing to select the worm and gear deceleration of deceleration speed ratio about 40 and the double reduction system of the about 6 big or small gear reductions of deceleration speed ratio for use; About 6 rev/mins of the rotating speed of chassis send the deceleration of signal prompt strap brake device motor near switch before; Under the not high operating mode of chassis rotating speed; Owing to the appropriate location on vertical ground, edge, chassis the bulb plunger reference column external member that two covers can accurately be adjusted the position is being installed, and the bulb plunger reference column external member that two covers can accurately be adjusted the position is mutually 180 (like Fig. 5).Base anchor in the bulb plunger reference column external member is built base anchor and ground together around base anchor through the fastening connection of foundation bolt (or expansion bolt) and ground and with concrete when equipment is installed; This base anchor and ground that has just guaranteed bulb plunger reference column external member firmly connects; Four trimming bolts when Installation and Debugging on the base anchor of fine setting bulb plunger reference column external member and the fine-tuning nut at top; The steel ball that makes bulb plunger reference column external member in just falling within the stop groove at edge, chassis, after tighten bulb plunger reference column each nut of external member (like Fig. 6).The chassis just can accurately be located when strap brake device motor stops like this.The chassis is used for fixing many imaging devices, and chassis supports is to be used for bearing the imaging device fractional load, makes integral device load be evenly distributed, and adjustable rotating mechanism can provide different corners.
The present invention is through the design of rotating foundation device, solved well the patient in the process of scanning at least two imaging systems a bed bodily form become inconsistent problem; Brought an outstanding advantage simultaneously; Because can rotating of scanning system; So the process of scanning does not have additional requirement to bed board length, so use the bed body of first imaging system or second imaging system can both satisfy the requirement of multiplicated imaging system, this is just to the mechanism that has only first imaging system in the past; Forming multiplicated imaging system through second imaging system of only buying required increase becomes possibility, has practiced thrift the equipment purchase cost of medical institutions dramatically.On the other hand; Through on rotating base, separately being assembled to the distance that is enough to safeguard to first imaging system and second imaging system; Make two imaging system position relative fixed; When safeguarding, need not move any one imaging system yet, do not have registration problems again before and after safeguarding, so the present invention also solve the maintaining problem of multiplicated imaging system in the lump well.
The method of operation according to system of the present invention will be described below.
When the patient gets into first imaging system when scanning (as shown in Figure 2): the first imaging system CT is near the bed body position, and bed board travels forward, and the patient is delivered to the first imaging system CT scan face, and the second imaging system PET is in away from the bed body position.At first, the patient does the scanning of the first imaging system CT, and after scanning was accomplished, bed board moved backward; The patient is sent back to the scanning starting position from scanning position, then through automaton, with multiplicated imaging system device Rotate 180 degree; This moment, the second imaging system PET was near the bed body position, and the first imaging system CT is in away from the bed body position, and bed board travels forward; The patient is delivered to the second imaging system PET scanning plane, and the patient carries out the scanning of the second imaging system PET, after scanning is accomplished; Bed board moves backward, and the patient is sent back to the scanning starting position from scanning position, and whole scanning process is accomplished; Through automaton,, equipment is returned to initial position then with multiplicated imaging system device reverse rotation 180 degree.
The first imaging system CT and the second imaging system PET can keep the global function clinical practice of independent operating separately simultaneously.
Although illustrate and describe embodiments of the invention, the present invention is not limited to the foregoing description.Under the situation that does not deviate from spirit of the present invention and principle, this area said technical staff can make amendment to the foregoing description, replacement etc.
For example, many imaging devices are placed on the rotating base in this foregoing description, and are scanning bed fixed, scan through different imaging devices is rotated to scanning position.Yet scanning bed being placed on the rotating base placed many imaging devices, through the scanning bed scanning position that rotates to different imaging devices is scanned by suitable fixed-site.
For example, with two imaging devices be arranged on rotating base around, with scanning bed first imaging system that rotates to,, the patient is delivered to the first imaging system CT scan face through bed board is travelled forward, get into first imaging system and scan.After scanning was accomplished, bed board moved backward, and the patient is sent back to the scanning starting position from scanning position; Through automaton, with the scanning bed second imaging system PET place that rotates to, bed board travels forward then; The patient is delivered to the second imaging system PET scanning plane, and the patient carries out the scanning of the second imaging system PET, after scanning is accomplished; Bed board moves backward, and the patient is sent back to the scanning starting position from scanning position, and whole scanning process is accomplished; Then through automaton, with the scanning bed initial position that rotates to.Equally, the first imaging system CT and the second imaging system PET can keep the global function clinical practice of independent operating separately.
For example, in the above-described embodiments, adopted tumbler, first imaging system of the present invention thus and second imaging system are rotatable or scanning bed rotatable, guarantee that thus the movement locus of patient when different sub-systems scans is consistent.Yet the present invention also can adopt move mode, promptly adopts the mobile device that can on guide, move, and replaces tumbler.For example, through guide such as track and the mobile device that can move along guides such as tracks, first imaging system of the present invention and second imaging system are removable or scanning bed removable, guarantee the movement locus unanimity of patient when different sub-systems scan thus.Said move mode can comprise translation mode, composite motion.Therefore, the present invention can adopt the mode of translation, rotation, compound motion to realize.
For example, as a kind of embodiment, mobile device of the present invention can be realized translation, rotation, compound motion.For example on the device that can carry out translation and compound motion, tumbler is set; Thus when first imaging system and second imaging system or scanning bed (patient support device) are installed on this mobile device; They can carry out translation, rotation, compound motion, guarantee that thus the movement locus of patient when different sub-systems scans is consistent.For example, the device of translation and compound motion can be the dolly that moves in orbit, balladeur train that moves along slideway, guide rail etc. etc.
Claims (6)
1. multiplicated imaging system comprises:
Be used to form first imaging system of first image;
Be used to form second imaging system of second image;
Be used to support those who are investigated's bed board;
Scanning bed, said bed board be supported on movably scanning bed on; And
Tumbler, said scanning bed being fixed on the said tumbler, so that said scanning bed first imaging system and second imaging system that selectively turns to around tumbler, scanning,
Wherein, when in first and second imaging systems, scanning, the bed board that supports those who are investigated is equal from the scanning bed elongation that stretches out, and
Wherein said tumbler comprises:
Fixing said scanning bed chassis;
The external tooth type floating bearing that is connected with the chassis;
The chassis seating of fixing said external tooth type floating bearing;
Pinion with the engagement of the external tooth of said external tooth type floating bearing; And
Strap brake device motor, said strap brake device motor links to each other with pinion through decelerator, and strap brake device motor is through the rotation on decelerator and pinion and external tooth type floating bearing drive chassis like this.
2. according to the described multiplicated imaging system of claim 1, said tumbler also comprises:
Detect the checkout gear of the chassis anglec of rotation,
Brake unit according to the chassis anglec of rotation that checkout gear detects, is braked said tumbler, so that make said scanning bedly stop in first imaging system or the said second imaging system place.
3. according to the described multiplicated imaging system of claim 1, also comprise:
The fixed capacitive approach switch installing rack in the appropriate location of upper surface in the outer ring of external tooth type floating bearing;
At capacitive approach switch near the suitable fixed-site of switch installing rack: and
The fixed metal derby in appropriate location on the inner ring of external tooth type floating bearing with constant slope; Thereby when the chassis rotates near first angle; Capacitive approach switch is near the metal derby with certain slope; Thereby capacitive approach switch sends signal controlling strap brake device motor and slows down, and when the chassis rotated to second angle, capacitive approach switch sends signal controlling strap brake device motor to be stopped and braking.
4. according to the described multiplicated imaging system of claim 1, also comprise: positioner, said positioner are used for said scanning bed first imaging system and the said second imaging system place of selectively being positioned at.
5. according to the described multiplicated imaging system of claim 4, wherein said positioner comprises:
The bulb plunger reference column external member of installing in the position relative with the edge, chassis;
And be arranged on the stop groove in the edge, chassis, and when being in said first imaging system or the said second imaging system place, the steel ball of said bulb plunger reference column external member falls within the stop groove at edge, chassis scanning bed, and the chassis can accurately be located thus.
6. multiplicated imaging system comprises:
Be used to support those who are investigated's bed board;
Scanning bed, said bed board be supported on movably scanning bed on;
Be used to form first imaging system of first image;
Be used to form second imaging system of second image; And
Telecontrol equipment, said first imaging system and said second imaging system are fixed on the said telecontrol equipment, so that said first imaging system and said second imaging system selectively move to scanning position,
Wherein, when in first and second imaging systems, scanning, the bed board that supports those who are investigated equates from the scanning bed elongation that stretches out.
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| CN2009101189236A CN101574264B (en) | 2006-09-30 | 2006-09-30 | Multiple-imaging system with rotatable patient table and imaging method |
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| CN2009101189236A CN101574264B (en) | 2006-09-30 | 2006-09-30 | Multiple-imaging system with rotatable patient table and imaging method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN104352243B (en) * | 2014-11-26 | 2016-09-21 | 首都医科大学附属北京朝阳医院 | Measure the audiometric systems of sound localization ability |
| CN106725579A (en) * | 2016-12-28 | 2017-05-31 | 上海联影医疗科技有限公司 | Medical Devices |
| CN113271865A (en) * | 2019-07-22 | 2021-08-17 | 西安大医集团股份有限公司 | Facial mask locating component and positioning system |
| CN116313122A (en) * | 2023-01-16 | 2023-06-23 | 康龙化成(南京)临床医学研究有限公司 | Tumor statistical analysis method and system based on Bayes model |
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