CN102781317B - Magnetic resonance imaging apparatus and method of maintenance thereof - Google Patents
Magnetic resonance imaging apparatus and method of maintenance thereof Download PDFInfo
- Publication number
- CN102781317B CN102781317B CN201180011789.5A CN201180011789A CN102781317B CN 102781317 B CN102781317 B CN 102781317B CN 201180011789 A CN201180011789 A CN 201180011789A CN 102781317 B CN102781317 B CN 102781317B
- Authority
- CN
- China
- Prior art keywords
- component
- cover
- magnetic field
- field generation
- generation section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/3802—Manufacture or installation of magnet assemblies; Additional hardware for transportation or installation of the magnet assembly or for providing mechanical support to components of the magnet assembly
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/3806—Open magnet assemblies for improved access to the sample, e.g. C-type or U-type magnets
Abstract
Provided is an MRI apparatus having a cover divided into a small number of smaller covers which are easy to attach and detach. A first cover (2) and a second cover (3) are coupled to each other by a hinge. The first and second covers are turned around the hinge and opened in opposite directions to expose magnetic field generation units (104, 105), etc. After predetermined maintenance work is performed on the magnetic field generation units, the first and second covers (2, 3) are closed from opposite directions to cover the magnetic field generation units again. The first and second covers (2, 3) can also be opened and maintenance work can be performed while a bed (119) disposed adjacent the magnetic field generation units (104, 105) and a third cover (9) disposed adjacent the bed (119) are in place.
Description
Technical field
The present invention relates to nuclear magnetic resonance (hereinafter referred to as " MRI ") device, particularly relate to the cover covering MRI device main body.
Background technology
MRI device is device as follows: measure the NMR signal that the nuclear spin of tissue forming subject, especially human body produces, thus carries out two dimension or 3-D view to the form of the head, abdominal part, extremity etc. of people or function.When photographing, giving phase code and frequency coding by leaning magnetic field to NMR signal, thus measuring as time series data.The NMR signal measured is configured to image again by two dimension or three dimensional fourier transform.
MRI device main body exist make examinee lie in axially towards in the inner space of the columnar magnetic field generation device of level be called as tunnel type apparatus main body and by the pair of magnetic field generator of the upper and lower configuration spaced apart of pillar supporting and examinee is inserted into carry out between this pair magnetic field generation device checking be called as opening apparatus main body.
MRI device possesses the exterior cover by coverings integratedly such as magnetic field generation devices.This cover, for the protection of device, with the impact of the blood evacuation from examinee etc., therefore plays for Accident prevention, for making effect in apparent good order and condition.
In patent documentation 1, disclose a kind of structure, covered the Magnet of the upside of opening MRI device by columnar upper magnet cover, covered the Magnet of downside by columnar examining table, and by the pillar covered between lid upper magnet and downside Magnet of pillar.In the MRI device of patent documentation 1, by such structure, can be close to examinee from the scope of the surrounding more than 180 degree of columnar examining table.
On the other hand, in patent documentation 2, disclose a kind of structure, the flat cover (base plate cover) making the upper surface (base plate) of the lower magnet of the opening MRI device of covering is slidingtype.Thus, people can carry out the dismounting of base plate cover.
At first technical literature
Patent documentation
Patent documentation 1: Japan Patent No. 4093736 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2002-320597 publication
Summary of the invention
The technical problem that invention will solve
When carrying out the maintenance of MRI device main body adjustment (pad adjustment) as the magnetostatic field uniformity etc., need to pull down cover.But the cover disclosed in patent documentation 1 needs to take off columnar upper magnet cover and columnar examining table (cover of lower magnet).
On taking off during magnet cover, operator must carry out taking off operation while the deadweight of supporting cover.In addition, when examining table is taken off from lower magnet, need the lower end of columnar examining table to be raised to the upper surface position by the top than lower magnet and take off.These operations make the burden of operator large, and a people is difficult to carry out operation.When mounted too.
Structure disclosed in patent documentation 2 only considers the mounting or dismounting of the tabular cover on the surface of the downside Magnet covering opening MRI device, when to the cover of other parts also same take off time, the burden of operator is large.
On the other hand, when increasing cover Segmentation Number, each cover diminishes, and the burden of operator in the weight this point of supporting cover alleviates, but must take off multiple cover when taking off, and takes off spended time and deterioration of efficiency.In addition, when cover Segmentation Number is many, cover involutory surface each other increases together therewith, therefore also there is attractive in appearance such problem of easy damage device.
In addition, because bed and downside Magnet are close to configuring, therefore in order to take off lower magnet cover, need bed ensemble is moved, coming formation space around lower magnet.But mobile weight is large and the operation of the bed of para position allocation makes the burden of operator large.Further, need para-position again when restoring, thus the process number of upkeep operation increases.
The object of the present invention is to provide a kind of cover Segmentation Number few and cover installation take off easy MRI device.
The means of invention technical solution problem
In order to solve above-mentioned problem, according to the 1st aspect of the present invention, provide following such MRI device.That is, it has the magnetic field generation section at least producing magnetostatic field in the space of configuration examinee, the cover covering magnetic field generation section, and wherein, cover is divided into plural component, and one end of first and second component in plural component is by hinged joint.By being opened to both sides by first and second component centered by hinge, thus magnetic field generation section is exposed.Therefore, by the action of opening to cover both sides, can easily make magnetic field generation section expose.
Such as, first and second component is cover along the cut-off rule segmentation of vertical the component obtained, and is configured to open to the left and right centered by hinge.
In addition, the 3rd component formed in the plural component of cover can be formed as the structure of the position in the region adjacent with bed can be fixed on installing and removing in the side covering magnetic field generation section.First and second component is formed as under the state that the 3rd component is fixed on the side of magnetic field generation section, can carry out the structure of opening and closing centered by hinge.Thus, under the state being configured with bed, first and second component can be opened and magnetic field generation section is exposed.
The structure of the pillar that magnetic field generation section is such as formed as having the interval that separates regulation and pair of magnet arranged opposite up and down, link with the side of described pair of magnet.In this case, first and second component of cover is the component at least partially of the side at least covering pair of magnet.Hinge can configure along pillar.First and second component be formed as the structure of docking in the side of the Magnet with pillar opposition side with a part for the end of the opposition side of one end of hinged joint.
Hinge also can be formed as the structure being fixed on magnetic field generation section.Thereby, it is possible to make being supported by magnetic field generation section via hinge at least partially of the weight of first and second component.
In addition, the weight of first and second component can be supported at least partially relative to floor in the lower end of first and second component.In this case, the partial configuration that can connect with floor in the lower end of first and second component reduces the component of coefficient of friction.Thereby, it is possible to make first and second component slide in floor and easily carry out opening and closing.The component reducing coefficient of friction such as uses wheel or sliding rail.
Such as, the Magnet of the downside in above-mentioned pair of magnet is discoid, and first and second component is the left surface of Magnet and the shape at least partially of right flank that cover downside.The 4th component in the plural component of cover is the upper surface of Magnet and the top of first and second component that cover downside, and the structure of the action hindering first and second component to open.Thereby, it is possible to the situation first and second component of moment of being not intended to such as preventing when photographing open.
First and second component can be divided into the part on the top covering magnetic field generation section respectively and cover the part of bottom.Thereby, it is possible to make the independent opening and closing of part covered upper part of the cover part and cover bottom.
In addition, according to the 2nd aspect of the present invention, provide a kind of maintaining method of MRI device.Namely, for taking off the cover producing the magnetic field generation section in magnetic field in the space of configuration examinee, carry out the method for the maintenance of MRI device, wherein, make to be rotated respectively centered by hinge by first and second cover of hinged joint, thus first and second cover is opened to both sides, magnetic field generation section is exposed, to the upkeep operation that magnetic field generation section specifies, by from first and second cover of two side closures, cover magnetic field generation section.
Being configured with bed, be fixed on the side of the magnetic field generation section of the position adjacent with bed the 3rd state of covering under, carry out above-mentioned first and second to cover the action of opening to both sides, thus the impact of bed can also be added and carry out upkeep operation.
Invention effect
According to the present invention, by being opened to both sides by first and second component centered by hinge, thus easily can carry out opening and closing to cover, magnetic field generation section can be made to expose.Thus, the burden of operator is little, can improve the working performance of maintenance.Further, due to also first and second component can be opened under the state being configured with bed, therefore, it is possible to add the impact of bed and carry out the maintenances such as pad adjustment.
Accompanying drawing explanation
Fig. 1 is the integrally-built block diagram of the MRI device representing the first embodiment.
Fig. 2 is the portal frame 1 of the MRI device of the first embodiment and the axonometric chart of bed 119.
Fig. 3 is the axonometric chart of the portal frame 1 of the MRI device of Fig. 2.
Fig. 4 is the side view of the portal frame 1 of the MRI device of Fig. 2.
Fig. 5 is the rearview of the portal frame 1 of the MRI device of Fig. 2.
Fig. 6 is the axonometric chart of the portal frame of Fig. 2 and each parts of cover.
Fig. 7 is that the A-A of Fig. 5 is to pseudosection.
Fig. 8 is that the B-B of Fig. 3 is to pseudosection.
Fig. 9 (a) is the front view of the hinge of the first embodiment, and (b) is the front view of another example of the hinge that can use in the first embodiment.
Figure 10 is the top view of the portal frame 1 of state after being opened by the main cover 2,3 of Fig. 3.
Figure 11 is that the C of Fig. 4 is to pseudosection.
Figure 12 is the flow chart of the service sequence representing the first embodiment.
Figure 13 is the axonometric chart of the portal frame 1 of state after the cover 20 opening the first embodiment.
Figure 14 is the profile of the portal frame 1 of state after the cover 20 opening the first embodiment.
Figure 15 is the top view of the portal frame 1 of state after the main cover 2,3 opening the second embodiment.
Figure 16 is the profile of the portal frame 1 of state after the cover 20 opening the 3rd embodiment.
Figure 17 is the axonometric chart of the portal frame 1 of state after the cover 20 opening the 3rd embodiment.
Figure 18 is the sliding rail 15 of configuration the 3rd embodiment and the profile of the portal frame 1 of the state after opening cover 20.
Figure 19 is the D direction view of Figure 18.
Figure 20 is the axonometric chart of the portal frame 1 of state after the cover 20 opening the 4th embodiment.
Detailed description of the invention
The MRI device of one embodiment of the present invention is described.
The structure > of <MRI device
First, the overall structure of the MRI device of present embodiment is described.Fig. 1 is the integrally-built sketch of the MRI device of non-mounting cup.This MRI device possesses: the magnetostatic field generator 101 producing magnetostatic field; Gradient magnetic field coil 111; High frequency (RF) coil 113; Backing plate (シ system プ レ mono-ト) 110; Carry the bed 119 of examinee 102; Leaning magnetic field power amplifier 112; High frequency power amplifier 114; High-frequency amplifier circuit 116; Computer 117; And display 118.In addition, magnetostatic field generator 101, gradient magnetic field coil 111, high frequency coil 113 and backing plate 110 are called portal frame 1.
The magnetostatic field generator 101 of portal frame 1 is open architecture, clip configuration examinee 102 photographing space 103 and on possessing up and down Magnet 104 and lower magnet 105.Upper Magnet 104 and lower magnet 105 are linked by pillar 106.Thus, be formed as the structure of the opening widely vacated of photographing space 103 all around, therefore, it is possible to provide the inspection environment few to the constriction of examinee 102 imparting.Upper Magnet 104 and lower magnet 105 are any one in permanent magnet, constant electrical conductivity Magnet and superconducting magnet, but adopt permanent magnet at this.
Magnetostatic field generator 101 produces magnetostatic field in photographing space 103.In order to its uniformity of magnetic field is improved into below setting, and be separately installed with backing plate 110 on the face of the photographing space 103 of upper Magnet 104 and lower magnet 105.Backing plate 110 offers multiple screwed hole (not shown in the drawings), and the screw of magnetic is installed in position.By the magnetic flux of the screw of magnetic, the distribution of the magnetic flux that magnetostatic field generator 101 produces is revised, thus uniformity of magnetic field is adjusted to below setting.
The face of the photographing space 103 of a pair backing plate 110 is configured with the pair of angled field coil 111 producing leaning magnetic field.This gradient magnetic field coil 111 is slab construction, with the structure of the opening of obstruction free magnetostatic field generator 101.The gradient magnetic field coil 111 of upper and lower a pair is built-in with these the three kinds of coils of x, y, z axially producing gradient magnetic respectively at mutually orthogonal three with stacked state.X coil, y coil, z coil are connected to the leaning magnetic field power amplifier 112 applying electric current independently.
Z coil forms the leaning magnetic field that magnetic flux density reduces downward gradually from the top of the z-axis (vertical axis) of photographing space 103.Equally, x coil and y coil form the gradient magnetic of x-axis, y-axis (being all trunnion axis) respectively.Thus, the gradient magnetic of the axis of overlapping regulation on the magnetic field that magnetostatic field generator 101 produces.
In photographing space 103 side of pair of angled field coil 111, a pair high frequency coil 113 is installed.This high frequency coil 113 is also slab construction.The high frequency coil 113 of upper and lower a pair is connected with high frequency power amplifier 114, carrys out supply high frequency electric current.Thus, the check point to examinee 102 irradiates the high frequency magnetic field of assigned frequency, makes the nuclear spin of check point produce nuclear magnetic resonance, NMR (NMR).Combined with this high frequency magnetic field by the leaning magnetic field that gradient magnetic field coil 111 is formed, make the check point of examinee 102 optionally release NMR signal.By leaning magnetic field, the phase code of positional information as three-dimensional and frequency coding are applied to NMR signal.
The magnetic test coil 115 of the precession detecting nuclear spin is configured with at the check point of examinee 102.This magnetic test coil 115 detects NMR signal, and shifts to high-frequency amplifier circuit 116.In high-frequency amplifier circuit 116, detection signal is amplified, and carries out detection and conversion process becomes digital signal.Computer 117 processes the detection signal being transformed into digital signal, is reconstructed the image etc. of subject 102, and is presented on display 118.
Computer 117 exports control signal via bus 120 to leaning magnetic field power amplifier 112, high frequency power amplifier 114, high-frequency amplifier circuit 116, and also carries out the control of the shooting of the shooting order put rules into practice.
As other main unit, the adjacent configuration of lower magnet 105 of the bed 119 that examinee 102 is transported to the center of photographing space 103 and magnetostatic field generator 101.Magnetostatic field generator 101 and bed 119 are arranged on and implement in the inspection chamber 109 of electromagnetic shielding.
The structure > of < cover
As shown in Fig. 2 ~ Fig. 8, the outside of portal frame 1 is covered by cover 20.Fig. 2 is the axonometric chart of the portal frame 1 and bed 119 covered by cover 20.Fig. 3, Fig. 4 and Fig. 5 are the axonometric chart of the portal frame 1 covered by cover 20, side view and rearview.In addition, each parts of formation cover 20 shown in Figure 6 and the axonometric chart of portal frame 1.Fig. 7 is the A-A profile (part) of Fig. 5 of the cross section structure of rear side for representing cover 20.Fig. 8 is the B-B profile (part) of Fig. 2 of the cross section structure of front face side for representing cover 20.
As shown in Figure 6, the profile of the upper Magnet 104 of magnetostatic field generator 101 be top tilt sideling discoid.Lower magnet 105 is discoid, is supported relative to base surface by the leg 131 of more than two configured at lower surface.The bottom surface of pillar 106 connects with floor, and this pillar 106 has the height of the upper surface to upper Magnet 104, supports Magnet 104, and upper Magnet 104 and lower magnet 105 is linked.Gradient magnetic field coil 11, high frequency coil 113 and backing plate 110 are fixed on the lower surface of Magnet 104 and the upper surface of lower magnet 105 respectively integratedly.
Utilize Fig. 2 ~ Fig. 8, the structure of cover 20 is described.Cover 20 comprises right main cover 2, left main cover 3, hinge 4, knuckle guard 8, central authorities' cover 5, upper RF cover 6, lower RF cover 7 and linking part cover 9.
Right main cover 2, when observing from front, is the shape of a part for the right flank of the right half part and right flank and lower magnet 105 that cover the upper surface of upper Magnet 104 and pillar.The part of the right flank face side of the unlapped lower magnet 105 of right main cover 2 is covered by linking part cover 9.Left main cover 3 is cover upper Magnet 104 and the left-half of upper surface of pillar 106 and the shape of the left surface of left surface and lower magnet 105.
Leg 2a, 3a of being integrally formed is provided with in lower end that is right and left main cover 2,3.
Right and left main cover 2,3, can relative to the patten's design of floor self uprights its intensity and weight etc. to pass through leg 2a, 3a under the state be connected with the hinge 4 at the back side.
Right main cover 2 and left main cover 3 dock in the position of the front of upper Magnet 104 and the Central Line 31 of upper surface, and the position of the back Central Line 32 of side is docked overleaf.The hooking mechanism 80 shown in Fig. 8 is possessed in the position of the Central Line 31 in front.The position of Central Line 32 is overleaf provided with hinge 4.Thus, right and left main cover 2 and 3 docks in the position of Central Line 31, and is linked by hooking mechanism 80, and is fixed in a part for inner portal frame 1.
The hooking mechanism 80 of Fig. 8 is described particularly.Hook portion 81 is fixed with respectively with the internal face docking end of the Central Line 31 in the front of left main cover 3 at right main cover 2.On the other hand, the receiving portion 82 of the shape engaged with hook portion 81 is fixed with respectively at the lateral surface of upper Magnet 104.Therefore, right main cover 2 and left main cover 3 are docked in the position of Central Line 31, and respective hook portion 81 is engaged with receiving portion 82, thus end that is right and left main cover 2 and 3 can be fixed on Magnet 104 with the state of docking at place of Central Line 31.
Utilize Fig. 5, Fig. 7, Fig. 9 (a), hinge 4 is described.Fig. 9 (a) is the enlarged front view of hinge 4.As shown in Figure 5, Figure 7, hinge 4 is fixed with multiple along the centrage 32 of the rear side of pillar 106.Hinge 4 has: clip centrage 32 and two rotating shafts 4a, 4b being arranged; The support plate 4c of supporting rotating shaft 4a, 4b; Alar part 4e, 4f of rotating shaft 4a, 4b can be fixed on rotatably; Support plate 4c is fixed on the fixed part 4d of pillar 106; And knuckle guard 8.In addition, not shown knuckle guard 8 in Fig. 5 and Fig. 9 (a).
Alar part 4e, 4f link the rear side end of right main cover 2 and left main cover 3 respectively.Thus, right main cover 2 and left main cover 3, as the shown in Figure 10 figure observed from above, rotate respectively centered by hinge 4, and right main cover 2 is opened towards right side when observing from front, left main cover 3 is opened towards left side when observing from front, and becomes two sides Unclosing structure.
Knuckle guard 8 is spaced apart and be fixed on support plate 4c with rotating shaft 4a, 4b.As shown in Fig. 4 and Fig. 7, the surface of knuckle guard 8 is formed in the mode forming the same face with the lateral surface of right and left main cover 2,3.Thus, by the concavo-convex covering of hinge 4, thus can provide a kind of at level and smooth aesthetically excellent cover 20.In addition, with can the size of patten's design knuckle guard 8 of the right and left main cover 2,3 of opening and closing and position etc. under the state that knuckle guard 8 is installed on support plate 4.Due to by the surface configuration of knuckle guard 8 with on the lateral surface the same face of right and left main cover 2 and 3, therefore alar part 4e, 4f becomes bending shape.
As shown in Figure 3, Figure 4, central authorities' cover 5 is the cover in the face of the face side covering pillar 106.
Central authorities' cover 5 be configured under the state that right main cover 2 and left main cover 3 are closed with right main cover 2 and left main cover 3 part superposition and hide the shape of pillar 12.
As shown in Figure 6, central authorities cover 5 hook-shaped accessory 5a, 5b are installed up and down.By making accessory 5a, 5b engage with the side accessory (not shown) that accepts installed in pillar 106 side, thus central authorities' cover 5 can be fixed on pillar 106 with installing and removing.
It is cover the discoid cover securing the lower surface of the upper Magnet 104 of gradient magnetic field coil 111, high frequency coil 113 and backing plate 110 and the upper surface of lower magnet 105 that upper RF cover 6, lower RF cover 7.Upper and lower RF cover 6,7 offers screw penetration hole 6a, 7a on principal plane, by screw being inserted screw penetration hole 6a, 7a and making screw be spirally connected (screwing togather) with the screwed hole (not shown) arranged on high frequency coil 114 and be fixed.
It is such that lower RF covers 7 cross sections as shown in fig. 11, covers and the mode chimeric with them is formed with the top of the part of the side of the covering lower magnet 105 at right and left main cover 2,3.In addition, although not shown, upper RF cover 6 also cover 7 same with lower RF, with the bottom covering of the part of the side of Magnet 104 in the covering on the right side and left main cover 2,3 and the mode chimeric with them formed.Thus, right and left main cover 2,3 becomes by the state of upper and lower RF cover 6,7 locking.Thus, right and left main cover 2,3, by the hooking structure 80 of face portion and the locking of upper and lower RF cover 6,7, can not be opened when the use of MRI device.In addition, by upper and lower RF cover 6,7 from the outer side covers right side and left main cover 2,3, liquid or dust can not enter into inner side that is right and left main cover 2,3, thus health aspect is improved.Further, when operator or examinee observe, the seam of main cover 2,3 unobtrusively, attractive in appearancely also to improve.
In addition, par 33 is provided with in the position of the regulation of the edge of lower RF cover 7.As shown in Figure 2, bed 119 configuration adjacent with par 33.By the sliding surface 119b of bed 119 is configured to the height identical with par 33, when being moved into shooting space 103 by subject 102, par 33 becomes the driving path of the sliding roof 119a having carried subject 102.
Linking part cover 9 to cover the bottom of par 33, the mode of the lateral side regions of namely adjacent with the side of bed 119 lower magnet 105 fixes.Be screwed to the side of lower magnet 105 by accessory 9a, the 9b possessed by linking part cover 9 and be fixed.Like this, by the bottom configuration linking part cover 9 in par 33, thus when opening the right side and the left main cover 2,3 of the part covered beyond linking part cover 9, can not interfere with bed 119.Therefore, right and left main cover 2,3 is opened when enabling bed 119 and lower magnet 105 adjacent configuration.
In addition, the top of right main cover 2 possesses for switch 2b, the 2c for operator's operation.Switch 2b, 2c are connected with electric distribution (not shown), and electric distribution is connected with the predetermined portion of portal frame 1 in the inner side of right main cover 2.
As the material forming cover 20, light and that intensity is large resin can be used.Such as, be applicable to using fiberglass-reinforced plastic (Glass Fiber Reinforced Plastics, GFRP).
< upkeep operation >
Then, utilize Figure 12, the work flow of taking off when (such as, the adjustment of shim coil 110) portal frame 1 safeguarded by cover 20 is described.In addition, the axonometric chart of the state after right and left main cover 2,3 being opened in order to carry out safeguarding shown in Figure 13 and Figure 14 and profile.
First, pull down screw and take off RF cover 6 (steps 121).Then, pull down screw and take off lower RF cover 7 (steps 122).Thus, the state can opening right and left main cover 2,3 is become.
Then, pull down the hooking structure 80 of the docking section in the front being positioned at right and left main cover 2,3, operator pushes docking section that is right and left main cover 2,3 open, right and left main cover 2,3 rotates centered by the hinge 4 at the back side thus, opens (step 123) to the left and right as Figure 10, Figure 13 and Figure 14.Now, leg 2a, 3a slide in floor, open while right and left main cover 2,3 remains on the state of self uprights in floor by leg 2a, 3a.Therefore, operator does not need the weight of support right and left main cover 2,3.In addition, bed 119 is not interfered with them, therefore, it is possible to opened in the right side and left main cover 2,3 under the state being configured with bed 119 when right and left main cover 2,3 rotates.
By being opened in the right side and left main cover 2,3, portal frame 1 is exposed.Thereby, it is possible to close to portal frame 1, thus desired maintenance (such as, pad adjustment) (step 124) can be carried out.
Now, do not need bed 119 is kept out of the way, when therefore carrying out pad adjustment adjusting backing plate 110, the impact of the magnetic that the bed 119 be configured on the position identical with when photographing comprises can be added and adjust uniformity of magnetic field accurately.
In addition, also as required central authorities' cover 5 can be taken off from pillar 106, carry out the maintenance of pillar 106.
After maintenance terminates, these central authorities cover 5 is installed when having taken off central cover 5 by operator, and is closed in the right side and left main cover 2,3, and the hook portion 81 of hooking structure 80 is engaged with receiving portion 82.Thus, the face portion of right and left main cover 2,3 is fixed with the state of docking at place of Central Line 31.Afterwards, RF cover 6 and lower RF cover 7 is installed by screw threads for fastening.By more than, upkeep operation terminates.
In the MRI device of present embodiment, right main cover 2 and left main cover 3 are supported by hinge 4 and leg 2a, 2b, slided in floor by leg 2a, 2b, under the state that right main cover 2 and left main cover 3 can be supported by hinge 4 and leg 2a, 2b in weight, carry out opening and closing.Thus, install the weight not needing the main cover of operator's support right 2 and left main cover 3 in the operation of taking off at cover, therefore workability improves.Taking off of right main cover 2 and left main cover 3 just can be carried out by operator people.
In addition, upper RF cover 6, lower RF cover 7 and central authorities' cover 5 areas are little and light, therefore can not bring large burden to operator, can easily take off.
In addition, due to the major part of MRI device main body 1 can be covered by right main cover 2 and left main cover 3, the therefore number that can reduce cover compared with the past.Therefore, the flow chart number that the installation of cover is taken off is few, efficiency can take off cover 20 well at short notice.
In addition, in the present embodiment, the number of cover compared with the past is few, and the kind of therefore covering is also few, thus the price of cover entirety can be made cheap.
In addition, because cover number is few, the involutory surface therefore covered each other tails off, and the outward appearance of device is good, thus can provide a kind of aesthetically excellent MRI device.
When safeguarding, due to opening and closing can be carried out to right and left main cover 2,3 under the state being configured with linking part cover 9, bed 119 and central authorities' cover 5, therefore, it is possible to reduce flow chart.Working performance can be improved.
Bed 119, owing to containing magnetic material in a part for constituent material, therefore has an impact to the magnetostatic field uniformity of MRI device.In the present embodiment, due to the maintenances such as pad adjustment can be carried out under the state being configured with bed 119, therefore, it is possible to safeguard under close to state when adding the photography of impact of bed 119, thus high-precision maintenance can be realized.
In the present embodiment, as shown in Fig. 9 (a), use the hinge 4 with two rotating shafts 4a, 4b, the right side and left main cover 2,3 are connected from different rotating shaft 4a, 4b respectively, and rotate centered by respective rotating shaft 4a, 4b, but the structure of hinge 4 is not defined as this structure.Also can as shown in Fig. 9 (b), the rotating shaft 91 making hinge 4 is one.
In addition, in the present embodiment, in apparent good order and condition in order to make, the structure that hinge 4 is hidden by smooth knuckle guard 8 as Fig. 4 and being formed as shown in Figure 7, but also can be formed as the structure not possessing knuckle guard 8.In addition, also can be formed through the structure that the other means such as hinge 4 carry out hidden hinge 4 is set in inner side that is right and left main cover 2,3.
In addition, in the first embodiment, carried out the weight of support right and left main cover 2,3 by hinge 4 and leg 2a, 3a, but also can be formed as the structure of the weight coming support right and left main cover 2,3 by means of only hinge 4.In this case, the structure that bottom that is right and left main cover 2,3 is floated from floor can be formed as, therefore, it is possible to the power that the switching station reducing main cover 2,3 needs.
(the second embodiment)
Utilize Figure 15, the MRI device of the second embodiment is described.
In the first embodiment, hinge 4 is fixed on pillar 106, but also as shown in figure 15, hinge 4 can be fixed on pillar 106, and be formed through hinge 4 by the structure of right and left main cover 2,3 link.In this case, the weight of right and left main cover 2,3 supports relative to floor by means of only leg 2a, 3a.Other structure is same with the first embodiment, therefore omits the description.
When the structure of Figure 15, the right side and left main cover 2,3 are opened, and makes them rearwardly move in direction, they can be taken off from portal frame 1 thus.Therefore, portal frame 1 is exposed to the back side of pillar 106, thus operator can unroll and carries out upkeep operation around pillar 106.
(the 3rd embodiment)
3rd embodiment is described.Figure 16 and Figure 17 is on leg 2a, 3a of main cover 2,3, possess the MRI device of wheel profile and axonometric chart.
As illustrated in the first embodiment, the weight of right main cover 2 and left main cover 3 is supported by pillar 106 via leg 2a, 3a and hinge 4.When opening and closing, operator promotes right main cover 2 and left main cover 3, makes leg 2a, 3a slide in floor and carry out in rotary moving.In the third embodiment, the burden of operator during in order to alleviate opening and closing further, and configure multiple wheel 14 as reducing right main cover and left main cover 3 mechanism with the coefficient of friction of the contact surface on floor.
Thus, right main cover 2 and left main cover 3 can be moved by being rotated in floor of wheel 14.In addition, the deadweight of right main cover 2 and left main cover 3 is supported relative to floor by wheel 14.
In the present embodiment, as shown in figure 16, in right main cover 2, two wheels 14 are arranged near the floor inside cover, in left main cover 3, three wheels 14 are arranged near the floor inside cover.The installation site of wheel 14 and number are not defined as the structure of Figure 16, Figure 17, both can be arranged on outside that is right and left main cover 2,3, can arrange more wheel yet.In addition, wheel can also be formed as can the structure of dismounting.
The mechanism reducing the coefficient of friction of the contact surface of right main cover 2 and left main cover 3 and base plate is not defined as wheel 14, can also use other structure.The structure of sliding rail 15 is used shown in Figure 18, Figure 19.
In the structure of Figure 18, floor configures the sliding rail 15 of multiple rectilinear form, and the otch 16 engaged with sliding rail 15 is set on the bottom surface of right and left main cover 2,3.
The internal face of the surface of sliding rail 15 and otch 16 is processed, smoothly to reduce coefficient of friction.
Like this, by configuration sliding rail 15, the right side and left main cover 2,3 can be made to move along sliding rail 15, thus opening and closing can be carried out by little power to right and left main cover 2,3.
In addition, sliding rail 15 can be formed as relative to floor can dismounting structure, carry out when the main cover of each opening and closing installing the structure, collapsible and the structure etc. of cover inside can be accommodated in of taking off.In addition, sliding rail 15, except rectilinear form, can also adopt bending shape.In addition, the structure of the otch 16 not possessing main cover 2,3 can also be formed as.
In addition, also can not use wheel 14 or sliding rail 15, and be formed as installing the structure of the material little relative to the coefficient of friction of floor such as fluorine (Off Star) resin sheet on the bottom surface of leg 2a, 3a of right and left main cover 2,3.In this case, the right side and left main cover 2,3 also can be made to slide in floor by little power.
In the structure of the 3rd embodiment, by arranging wheel 14 or sliding rail 15 near the floor of main cover 2,3, and operating physical force when can alleviate main cover opening and closing, thus can the main cover of successfully opening and closing.
By arranging above-mentioned wheel 14 or sliding rail 15, the weight of the main cover supported by wheel 14 and sliding rail 15 can be made to become large, therefore, it is possible to alleviate the load acted on hinge 4.Therefore, it is possible to alleviate the rigidity of hinge 4, thus reduce costs.
In addition, hinge 4 be not fixed in the structure of pillar 106 as the second embodiment, the wheel 14 of the 3rd embodiment or sliding rail 15 etc. also can be adopted to reduce the structure of coefficient of friction.
(the 4th embodiment)
Use the axonometric chart of Figure 20, the MRI device of the 4th embodiment is described.
In the present embodiment, as shown in figure 20, the right side and left main cover 2,3 are vertically divided into two components respectively.Right main cover 2 is divided into the main cover 212 of the main cover of upper right 202 and bottom right.Left main cover 3 is divided into the main cover in upper left 203, the main cover 203 in lower-left.
Hinge 4 also arranges two or more, and the hinge 4 installing upper right and the main cover in upper left 202,203 is different from the hinge 4 installing bottom right and the main cover in lower-left 212,213.Thereby, it is possible to make the main cover 202,203 of upside and main cover 212, the 213 independently opening and closing of downside.
In the structure of present embodiment, due to main cover 2, about 3 is split, when either party therefore in Magnet 104 on will safeguarding and lower magnet 105, opening and closing can be carried out to carry out upkeep operation by means of only to the main cover 202,203 of upside or the main cover 212,213 of downside.Be divided into two-part main cover than undivided main cover 2,3 little and light, therefore, it is possible to easily carry out opening and closing operation.Therefore, it is possible to easily carry out upkeep operation.
In addition, also can on the bottom surface of the main cover 212,213 in bottom right and lower-left, adopt the 4th embodiment like that for reducing the structure of the coefficient of friction with floor.
In addition, the weight saving by segmentation of the main cover 212,213 in bottom right and lower-left, is therefore also easily configured to bear whole weight by hinge 4.
In addition, hinge 4 also can be fixed on pillar 106 by the main cover 212,213 in bottom right and lower-left as the second embodiment, and is formed as the structure that can install and remove from portal frame 104.
Symbol description:
1 portal frame, 20 covers, 2 right main covers, 2a lower limb portion, 2b, 2c switch, 3 left main covers, 3a lower limb portion, 4 hinges, 4a, 4b rotating shaft, 4c support plate, 4d fixed part, 4e, 4f alar part, 5 central authorities' covers, 5a, the fixing accessory of 5b, RF cover on 6, 6a screw penetration hole, 7 times RF covers, 7a screw penetration hole, 8 knuckle guards, 9 linking part covers, 9a, the fixing accessory of 9b, 14 wheels, 15 sliding rails, 16 otch, the Central Line of 31 fronts and upper surface, the Central Line at 32 back sides, 33 pars, 80 hooking structures, 81 hook portions, 82 receiving portions, 101 magnetostatic field generators, 102 subjects, 103 photographing spaces, Magnet on 104, 105 lower magnets, 106 pillars, 109 inspection chambers, 111 gradient magnetic field coils, 112 leaning magnetic field power amplifiers, 113 high frequency coils, 114 high frequency power amplifiers, 115 magnetic test coils, 116 high-frequency amplifier circuits, 117 computers, 118 display, 119, 119a sliding roof, 119b sliding surface, 131 lower limb portions, the main cover of 202 upper right, the 203 main covers in upper left, the 212 main covers in bottom right, the 213 main covers in lower-left
Claims (12)
1. a MR imaging apparatus, is characterized in that,
Have and produce the magnetic field generation section of magnetostatic field and cover the cover of described magnetic field generation section in the space of configuration examinee, the pillar that described magnetic field generation section has the space that separates this configuration examinee and pair of magnet arranged opposite up and down, links with the side of described pair of magnet
Described cover is divided into plural component, first and second component in described plural component is the component at least partially of the side covering described pair of magnet, and one end is by the hinged joint configured along described pillar, by being opened to both sides by first and second component described centered by described hinge, and described magnetic field generation section is exposed.
2. MR imaging apparatus according to claim 1, is characterized in that,
First and second component described is, along the cut-off rule of vertical, described cover is split the component obtained, and opens to the left and right centered by described hinge.
3. MR imaging apparatus according to claim 1 and 2, is characterized in that,
Also there is the bed of configuration adjacent with described magnetic field generation section,
The 3rd component formed in the described plural component of described cover is fixed on the position covered the region adjacent with described bed in the side of described magnetic field generation section dismantledly, under the state that described 3rd component is fixed on the side of described magnetic field generation section, first and second component described can carry out opening and closing centered by described hinge.
4. MR imaging apparatus according to claim 1 and 2, is characterized in that,
In first and second component described, docking in the side of the described Magnet with described pillar opposition side with a part for the end of the opposition side of one end of described hinged joint of first and second component described.
5. MR imaging apparatus according to claim 1 and 2, is characterized in that,
Described hinges fixing is due to described magnetic field generation section.
6. MR imaging apparatus according to claim 1 and 2, is characterized in that,
The weight of first and second component described is supported at least partially relative to floor in the lower end of first and second component described.
7. MR imaging apparatus according to claim 6, is characterized in that,
The component reducing coefficient of friction is had at the partial configuration connected with floor of the lower end of first and second component described.
8. MR imaging apparatus according to claim 7, is characterized in that,
The component reducing described coefficient of friction is wheel or sliding rail.
9. MR imaging apparatus according to claim 4, is characterized in that,
The Magnet of the downside in described pair of magnet is discoid, and first and second component described is the shape covered at least partially of left surface to the Magnet of described downside and right flank,
The 4th component in the plural component of described cover is the upper surface of the Magnet covering described downside and the top of first and second component described and the structure of the action hindering first and second component described to open.
10. MR imaging apparatus according to claim 1 and 2, is characterized in that,
First and second component described is divided into the part on the top covering described magnetic field generation section respectively and covers the part of bottom, and the part covering described top and the part covering described bottom independently can carry out opening and closing.
The maintaining method of 11. 1 kinds of MR imaging apparatus, it is the cover taking off MR imaging apparatus, carry out the method safeguarded, wherein said MR imaging apparatus have configuration examinee space in produce the magnetic field generation section in magnetic field and cover the described cover of described magnetic field generation section, the pillar that described magnetic field generation section has the space that separates this configuration examinee and pair of magnet arranged opposite up and down, links with the side of described pair of magnet
Described cover is divided into plural component, first and second component in described plural component is the component at least partially of the side covering described pair of magnet, and one end is by the hinged joint configured along described pillar, the feature of the maintaining method of this MR imaging apparatus is
Make to be rotated respectively centered by described hinge by first and second component of described hinged joint, thus first and second component described opened to both sides, described magnetic field generation section is exposed,
To the upkeep operation that described magnetic field generation section specifies,
By from first and second component described in two side closures, cover described magnetic field generation section.
The maintaining method of 12. MR imaging apparatus according to claim 11, is characterized in that,
Be configured with configuration adjacent with described magnetic field generation section bed and be fixed on the position adjacent with this described magnetic field generation section side on the 3rd component state under, first and second component described is opened, carries out described upkeep operation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010061801 | 2010-03-18 | ||
| JP2010-061801 | 2010-03-18 | ||
| PCT/JP2011/055576 WO2011114975A1 (en) | 2010-03-18 | 2011-03-10 | Magnetic resonance imaging apparatus and method of maintenance thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102781317A CN102781317A (en) | 2012-11-14 |
| CN102781317B true CN102781317B (en) | 2015-06-17 |
Family
ID=44649070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180011789.5A Active CN102781317B (en) | 2010-03-18 | 2011-03-10 | Magnetic resonance imaging apparatus and method of maintenance thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5722308B2 (en) |
| CN (1) | CN102781317B (en) |
| WO (1) | WO2011114975A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013226277A (en) * | 2012-04-26 | 2013-11-07 | Ge Medical Systems Global Technology Co Llc | Medical apparatus |
| CN113749669A (en) * | 2021-10-08 | 2021-12-07 | 泰安北航科技园信息科技有限公司 | Radiationless fetus-voice meter |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1528151A (en) * | 1975-10-31 | 1978-10-11 | English Electric Valve Co Ltd | Permanent magnets |
| CN1397253A (en) * | 2001-06-08 | 2003-02-19 | Ge医疗系统环球技术有限公司 | Head plate, its design and mfg. method, magnet hood magnet system and magnetic resonance camera |
| CN1585620A (en) * | 2001-11-14 | 2005-02-23 | 皇家飞利浦电子股份有限公司 | Medical imaging system |
| CN2920157Y (en) * | 2005-12-28 | 2007-07-11 | 沈阳东软波谱磁共振技术有限公司 | Cover of magnetic resonance imaging device |
| CN101152106A (en) * | 2006-09-29 | 2008-04-02 | 株式会社东芝 | Image diagnosis apparatus for medical purpose |
| CN101152086A (en) * | 2006-09-29 | 2008-04-02 | 西门子公司 | Medical examination or treatment facility |
| JP2009028259A (en) * | 2007-07-26 | 2009-02-12 | Hitachi Medical Corp | Magnetic resonance imaging apparatus |
| CN201303941Y (en) * | 2008-12-15 | 2009-09-09 | 东软飞利浦医疗设备系统有限责任公司 | Housing of superconducting magnetic resonance imaging equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63145642A (en) * | 1986-12-08 | 1988-06-17 | 三洋電機株式会社 | Nuclear magnetic resonance diagnostic apparatus |
| JPH06315478A (en) * | 1993-05-07 | 1994-11-15 | Toshiba Corp | Rack |
| JP3033679B2 (en) * | 1995-11-30 | 2000-04-17 | 株式会社島津製作所 | Gantry device for medical imaging equipment |
| JP4785125B2 (en) * | 2005-11-21 | 2011-10-05 | 株式会社日立メディコ | Magnetic resonance imaging system |
-
2011
- 2011-03-10 WO PCT/JP2011/055576 patent/WO2011114975A1/en active Application Filing
- 2011-03-10 CN CN201180011789.5A patent/CN102781317B/en active Active
- 2011-03-10 JP JP2012505634A patent/JP5722308B2/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1528151A (en) * | 1975-10-31 | 1978-10-11 | English Electric Valve Co Ltd | Permanent magnets |
| CN1397253A (en) * | 2001-06-08 | 2003-02-19 | Ge医疗系统环球技术有限公司 | Head plate, its design and mfg. method, magnet hood magnet system and magnetic resonance camera |
| CN1585620A (en) * | 2001-11-14 | 2005-02-23 | 皇家飞利浦电子股份有限公司 | Medical imaging system |
| CN2920157Y (en) * | 2005-12-28 | 2007-07-11 | 沈阳东软波谱磁共振技术有限公司 | Cover of magnetic resonance imaging device |
| CN101152106A (en) * | 2006-09-29 | 2008-04-02 | 株式会社东芝 | Image diagnosis apparatus for medical purpose |
| CN101152086A (en) * | 2006-09-29 | 2008-04-02 | 西门子公司 | Medical examination or treatment facility |
| JP2009028259A (en) * | 2007-07-26 | 2009-02-12 | Hitachi Medical Corp | Magnetic resonance imaging apparatus |
| CN201303941Y (en) * | 2008-12-15 | 2009-09-09 | 东软飞利浦医疗设备系统有限责任公司 | Housing of superconducting magnetic resonance imaging equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2011114975A1 (en) | 2013-06-27 |
| WO2011114975A1 (en) | 2011-09-22 |
| JP5722308B2 (en) | 2015-05-20 |
| CN102781317A (en) | 2012-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101573074B (en) | Magnetic resonance inspecting apparatus | |
| US6317618B1 (en) | Transportable intraoperative magnetic resonance imaging apparatus | |
| US6459923B1 (en) | Intervention bed for a medical imaging device | |
| JP5751541B2 (en) | Patient support table used in magnetic resonance imaging | |
| CN1315430C (en) | Medical imaging system | |
| US8245335B2 (en) | Support component for use in imaging by magnetic resonance and x-ray | |
| CN103033777B (en) | Adjustable MRI head coils equipment and MRI system | |
| CN104470441B (en) | The rotating gantry of multi-mode imaging system | |
| JP5832627B2 (en) | Magnetic resonance imaging device | |
| CN102781317B (en) | Magnetic resonance imaging apparatus and method of maintenance thereof | |
| EP2448479B1 (en) | Rf coil for mr imaging which is not visible in x-ray image | |
| US20180143271A1 (en) | Magnetic resonance transmitting coil and magnetic resonance imaging apparatus | |
| KR101615884B1 (en) | Shim coil arrangement for an extremity of patient | |
| RU2015146012A (en) | SET OF MULTI-ZONE RADIO FREQUENCY COILS FOR DIFFERENT PATIENTS | |
| CN107890353A (en) | PET frames and PET imaging devices | |
| CN201398969Y (en) | Magnetic resonance imaging device with movable body coil | |
| US20060261813A1 (en) | Magnetic resonance apparatus with displaceable C-arm mount for an additional gradient coil unit | |
| JP2007510489A (en) | MRI apparatus having an RF receiver coil fixed to a housing | |
| JP5174399B2 (en) | Magnetic resonance imaging system | |
| CN102551720B (en) | Magnetic resonance diagnosis apparatus and data acquisition method of magnetic resonance spectroscopy | |
| JP4767667B2 (en) | MRI system using superconducting magnet | |
| WO2016104638A1 (en) | Magnetic resonance imaging apparatus and installation method for magnetic resonance imaging apparatus | |
| CN203935186U (en) | MR imaging apparatus | |
| CN207693569U (en) | With the scanning bed of coil support device | |
| JP2008005999A (en) | Mri apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170414 Address after: Tokyo, Japan, Japan Patentee after: Hitachi Ltd. Address before: Tokyo, Japan, Japan Patentee before: Hitachi Medical Corporation |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211125 Address after: Chiba County, Japan Patentee after: Fujifilm medical health Co.,Ltd. Address before: Tokyo, Japan Patentee before: Hitachi, Ltd. |
|
| TR01 | Transfer of patent right |