CN105833431A - Isocenter correction method of radiotherapy equipment - Google Patents
Isocenter correction method of radiotherapy equipment Download PDFInfo
- Publication number
- CN105833431A CN105833431A CN201610152607.0A CN201610152607A CN105833431A CN 105833431 A CN105833431 A CN 105833431A CN 201610152607 A CN201610152607 A CN 201610152607A CN 105833431 A CN105833431 A CN 105833431A
- Authority
- CN
- China
- Prior art keywords
- frame
- installed surface
- limit element
- plane
- treated arms
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
An isocenter correction method of radiotherapy equipment is disclosed. The method at least comprises the following steps of providing a first limiting component of a first specification and adapting the component to a groove of a first installation surface and a groove of a second installation surface so that a treatment arm is positioned at a second direction basically vertical to a first direction in a plane parallel to a rotation plane of a rack relative to the rack; fixing a second installation surface of the treatment arm to a first installation surface of the rack; measuring a deviation of a position of an actual isocenter in the plane parallel to the rotation plane of the rack and a position of a theoretical isocenter on a second direction, wherein the deviation exceeds a predetermined scope; removing connection between the treatment arm and the rack and removing the first limiting component; providing a first limiting component of a second specification and adapting the component to the groove of the first installation surface and the groove of the second installation surface so that the actual isocenter moves in the plane parallel to the rotation plane of the rack and the deviation is in the predetermined scope; fixing the second installation surface of the treatment arm to the first installation surface of the rack.
Description
Technical field
The present invention relates to a kind of radiotherapy equipment, particularly relate to that there is between frame and treated arms spacing group
Part is to correct the radiotherapy equipment of isocenter point.
Background technology
In prior art, the structure of radiotherapy equipment 100 as it is shown in figure 1, its specifically include that frame 102,
Treated arms 104 and treatment 106.Frame 102 can be around axis of rotation rotary motion, and treated arms 104 is passed through
Bolt or welding manner are fixing with frame 102 to be connected, and rotates following frame 102, and for controlling
Treat 106 offer to support.Treatment 106 generally includes target, example of primary collimator, tungsten door, multi-leaf optical grating etc.
Assembly, can rotate around pivot center.The central axis for the treatment of 106 and the pivot center phase of frame 102
Meeting at a bit, this point is referred to as isocenter point, and this isocenter point is the central point of area for treatment.
The positional precision of isocenter point is an important performance parameter of radiotherapy equipment, and it affects reality
Area for treatment and the deviation size of stoichiometric region position.The positional precision of isocenter point is typically difficult to improve, existing
The precision of some Ge Jia manufacturers isocenter point typically only has ± 1mm, and chief reason has two aspects: the first,
The positional precision of isocenter point can be by frame 102, treated arms 104, the processing for the treatment of 106 each assemblies and dress
Join precision impact, owing to intermediate sizes chain relates to a lot of parts, be difficult to be ensured by raising machining accuracy
Isocentric positional precision；The second, treated arms 104 is the form of cantilever to the support for the treatment of 106, outstanding
Arm lengths is at about 1m, and under the heavy load effect for the treatment of 106, treated arms 104 can be sent out with frame 102
Raw elastic deformation, even there will be obvious creep after a period of time, this can affect isocenter point equally
Precision, as shown in Figure 2.
Summary of the invention
In order to the most more convenient and isocenter point is precisely located can overcome at life-time service again simultaneously
During the impact that brings of the precision of elastic deformation isocenter point of treated arms, the present invention is proposed.
According to an aspect of the invention, it is provided a kind of radiotherapy equipment, comprising: frame, it sets
It is equipped with the first installed surface；Treated arms, its one end has the second installed surface, and described second installed surface is fixed to institute
Stating on described first installed surface of frame, the other end of described treated arms stretches out；Treatment head, it is fixed
On the other end of described treated arms；The most at least include: the first limit element of interchangeable first specification and
First limit element of the second specification, wherein, when the first limit element of described first specification fits in described
The central axis of described treatment head and the rotation of described frame time between first installed surface and described second installed surface
The intersection point between axis predetermined party in the plane paralleled with the rotational plane of described frame is upwardly deviated from pre-
Determine scope, and when the first limit element of described second specification fits in described first installed surface and described the
Time between two installed surfaces intersection point between central axis and the pivot center of described frame of described treatment head with
It is in preset range on described predetermined direction in the plane that the rotational plane of described frame is parallel.
According to another aspect of the present invention, it is provided that a kind of radiotherapy equipment, comprising: frame, its
It is provided with the first installed surface；Treated arms, its one end has the second installed surface, and described second installed surface is fixed to
On described first installed surface of described frame, the other end of described treated arms stretches out；Treatment head, it is solid
Determine on the other end of described treated arms；The most at least include: the limit element of interchangeable first specification and
The limit element of two specifications, wherein, when the limit element of described first specification fits in described first installed surface
And time between described second installed surface between central axis and the pivot center of described frame of described treatment head
Intersection point deviates preset range in the plane perpendicular with the rotational plane of described frame, and when described second
The limit element of specification is described treatment head when fitting between described first installed surface and described second installed surface
Intersection point between the pivot center of central axis and described frame is perpendicular with the rotational plane of described frame
It is in preset range in plane.
According to another aspect of the present invention, disclose a kind of radiotherapy equipment, comprising: frame, its
It is provided with the first installed surface；Treated arms, its one end has the second installed surface, and described second installed surface is fixed to
On described first installed surface of described frame, the other end of described treated arms stretches out；Treatment head, it is solid
Determine on the other end of described treated arms；The most at least include: there is the first limit element of multiple different size
The first limit element group, one of them fits between described first installed surface and described second installed surface,
Wherein, described first limit element between different size be can be replaced so that the central shaft of described treatment head
Intersection point between the pivot center of line and described frame is in the plane paralleled with the rotational plane of described frame
Predetermined direction on be movable in preset range.
According to another aspect of the present invention, disclose a kind of radiotherapy equipment, comprising: frame, its
It is provided with the first installed surface；Treated arms, its one end has the second installed surface, and described second installed surface is fixed to
On described first installed surface of described frame, the other end of described treated arms stretches out；Treatment head, it is solid
Determine on the other end of described treated arms；The most at least include: there is the limit of the limit element of multiple different size
Bit unit group, one of them fits between described first installed surface and described second installed surface, wherein,
Described limit element between different size be can be replaced so that the central axis of described treatment head and described machine
Intersection point between the pivot center of frame is movable to pre-in the plane perpendicular with the rotational plane of described frame
In the range of Ding.
According to another aspect of the present invention, disclose a kind of radiotherapy equipment, comprising: frame, its
It is provided with the first installed surface；Treated arms, its one end has the second installed surface, and described second installed surface is fixed to
On described first installed surface of described frame, the other end of described treated arms stretches out；Treatment head, it is solid
Determine on the other end of described treated arms；Wherein, cloth between described first installed surface and described second installed surface
Being equipped with limit element, described limit element is interchangeable so that the central axis of described treatment head and described machine
Intersection point between the pivot center of frame is can be from predetermined in the plane paralleled with the rotational plane of described frame
Within being adjusted to preset range outside scope.
According to another aspect of the present invention, disclose a kind of radiotherapy equipment, comprising: frame, its
It is provided with the first installed surface；Treated arms, its one end has the second installed surface, and described second installed surface is fixed to
On described first installed surface of described frame, the other end of described treated arms stretches out；Treatment head, it is solid
Determine on the other end of described treated arms；Wherein, cloth between described first installed surface and described second installed surface
Being equipped with limit element, described limit element is interchangeable so that the central axis of described treatment head and described machine
Intersection point between the pivot center of frame is can be from predetermined in the plane perpendicular with the rotational plane of described frame
Within being adjusted to preset range outside scope.
According to another aspect of the present invention, the correction side of the isocenter point of a kind of radiotherapy equipment is disclosed
Method, at least includes: providing frame, described frame has the first installed surface, and described first installed surface limits
There is groove along a first direction；Thering is provided treated arms, described treated arms has the first end and the second end, wherein
First end has the second installed surface, and described second installed surface defines groove along a first direction, described
Second end is fixed with treatment head；There is provided the first limit element of the first specification, the first limit of described first specification
Bit unit adapts to the groove of described first installed surface and the groove of described second installed surface so that described treated arms
The most described frame is basically perpendicular to described first party in the plane paralleled with the rotational plane of described frame
To second direction on position；Second installed surface of fixing described treated arms is to described first peace of described frame
On dress face；Measure intersection point between central axis and the pivot center of described frame of described treatment head with institute
State position in the plane that the rotational plane of frame is parallel and precalculated position in this second direction inclined
Difference, described deviation exceedes preset range；Dismantle the connection between described treated arms and described frame and remove
One limit element；The first limit element providing the second specification adapts to groove and the institute of described first installed surface
State the groove of the second installed surface so that between the central axis of described treatment head and the pivot center of described frame
Intersection point moves so that their deviation is in predetermined in the plane paralleled with the rotational plane of described frame
In the range of；Second installed surface of fixing described treated arms is on described first installed surface of described frame.
According to another aspect of the present invention, the correction side of the isocenter point of a kind of radiotherapy equipment is disclosed
Method, at least includes: providing frame, described frame has the first installed surface；Treated arms, described treatment are provided
Arm has the first end and the second end, and wherein the first end has the second installed surface, and described second end is fixed with treatment
Head；There is provided at least two limit element, described at least two limit element adapt to described first installed surface and
Radial outside between described second installed surface with radially inner side so that the relative described frame of described treated arms with
The plane inner position that the rotational plane of described frame is perpendicular；Second installed surface of fixing described treated arms is to institute
State on described first installed surface of frame；Measure central axis and the rotary shaft of described frame of described treatment head
Between the intersection point between line position and precalculated position in the perpendicular plane of the rotational plane of described frame
Deviation, described deviation exceedes preset range；Dismantle the connection between described treated arms and described frame and move
Except a limit element with the first specification；The limit element providing the second specification is removed described in replacing
Limit element also adapts between described first installed surface and described second installed surface so that in described treatment head
Intersection point between the pivot center of mandrel line and described frame is in perpendicular the putting down with the rotational plane of described frame
Move in face so that their deviation is in preset range；Second installed surface of fixing described treated arms arrives
On described first installed surface of described frame.
The present invention can realize being accurately positioned between frame and treated arms.According to the present invention, it is possible not only to
The interior central axis to treatment head of plane of the rotational plane being parallel to frame and the intersection point of the pivot center of frame
Be adjusted thus by etc. be centrally located in accurate position, and coupling stiffness is the highest.Additionally, also may be used
With in being perpendicular to the plane of rotational plane of frame to the pivot center of the treatment central axis of head and frame
Intersection point be adjusted thus overcome treated arms due to Long-term bend deformation the precision misalignment that causes.
Accompanying drawing explanation
Fig. 1 is a kind of radiotherapy equipment of the prior art；
Fig. 2 is the schematic diagram of the treated arms bending of the radiotherapy equipment of Fig. 1；
Fig. 3 pacifies according to treated arms and the frame of the exemplary radiation therapy equipment of one embodiment of the present invention
Assembling structure figure；
Fig. 4 is the schematic, exploded of Fig. 3；
Fig. 5 is the end view of the frame of Fig. 3；
Fig. 6 is the end view of the treated arms of Fig. 3；
Fig. 7 is the schematic diagram of the limit element of Fig. 3；And
Fig. 8 is the schematic diagram of first limit element of Fig. 3, and wherein Fig. 8 (a) is that one pair of which first is spacing
The schematic diagram of limit element, Fig. 8 (b) is another signal to the first limit element of replaceable Fig. 8 (a)
Figure；
Fig. 9 is the correction within being parallel to the plane of rotational plane of frame of the isocenter point of radiotherapy equipment
Method；And
Figure 10 is the correction in being perpendicular to the plane of rotational plane of frame of the isocenter point of radiotherapy equipment
Method.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is specifically described.
It should be appreciated that the corresponding term that some term in claims is not only restricted in description
The scope explained.Such as, " first direction " in claim may refer to " first in description
Direction " " second direction " of description can also be referred to.When explaining the similar terms in claims,
Should explain according to mentioned above principle.
See Fig. 3-Fig. 8, disclose a kind of radiotherapy equipment 200.This radiotherapy equipment 200 at least wraps
Including rack 202 and treated arms 204, wherein, frame 202 is the most generally circular, and operationally
Doing continuously approximately about its centre of gyration or discrete gyration, frame 202 has away from its time
Turn center the first installed surface S1, this first installed surface S1 by such as by being welded on frame 202 end face
Fixed block is formed, and one end of treated arms 204 has the second installed surface S2 and is fixed to the first of frame 202
On installed surface S1, the other end of treated arms 204 stretches out, and as prior art, treatment head can be by
It is fixed on the other end of treated arms 204.So, this relative frame 202 of treated arms 204 forms cantilever knot
Structure.
Define on first installed surface S1 of frame 202 the first groove 206 along a first direction and along
Being basically perpendicular to the second groove 208 of first direction, in schematically direction as depicted, first direction refers to
Being the horizontal direction in figure, second direction refers to the vertical direction in figure.Accordingly, the second installed surface S2
On define threeth groove 210 corresponding with the first groove 206 and the corresponding with the second groove 208 the 4th
Groove 212.
It is also equipped with between the first installed surface S1 and the second installed surface S2 of treated arms 204 of frame 202
Limit assembly 214, this limit assembly 214 can realize treated arms 204 regulation in the horizontal direction, hang down
Nogata to regulation and thus can in the rotational plane being parallel to frame 202 central shaft of adjustment for the treatment of head
The position of the intersection point of the pivot center of line and frame 202, this limit assembly 214 can also realize such as Fig. 2
The correction regulation of shown treated arms buckling phenomenon.Normally, aforementioned " regulation " refers to fine setting or recalibration,
But, the regulation beyond fine setting scope is not restricted by the present invention.Specifically, as described below.
Limit assembly 214 includes a pair first limit elements 216 and a pair first limit elements 218, wherein,
In the present embodiment, limit element 216 is for the most spacing, and limit element 218 is for Horizontal limiting.Limit
Bit unit 216,218 can be all limited block, and wherein, " spacing " and " location " meaning of a word is close to also energy phase
Trans-substitution, and the effect that " block " can be substituted by " key " and they play is substantially similar.In example
In the embodiment of property, because the first installed surface S1 and the second installed surface S2 is hollow, so, in order to more
Realize well that limit function, limit element 216 and limit element 218 are that specification is identical respectively two,
And arrange in the groove of hollow space both sides respectively, as shown in the figure.Here, the number of limit element 216
Be two to or two to more than, to between specification slightly different, these two pair or multipair limit element
216 constitute limit element group, similarly, the number of limit element 218 be two to or two to more than, right
And the specification between to is slightly different, these two pair or multipair limit element 218 constitute another limit element
Group.Specification is generally referred to as size, and size here refers to the central axis to treatment head and frame 202
The position of intersection point of pivot center can play the size of corrective action, wherein, the specification of multipair limit element
Difference can such as according to equal difference or the difference in size of equal proportion configure.
Fig. 8 (a) and Fig. 8 (b) schematically illustrates the first limit element 216 that specification is slightly different,
In the installment state that certain is concrete, a pair the first identical limit element 216 of specification is installed, if surveying after An Zhuaning
Measure get Deng center vertical direction within being parallel to the plane of rotational plane of frame 202 and have more than predetermined
The deviation of scope, then can be corrected the first limit element by another being replaced with as shown in Fig. 8 (b)
This deviation.Specifically, limit element 216 include the first overhang 216a and with the first overhang 216a
The second oppositely extending overhang 216b, wherein, the first overhang 216a and the first groove 206 are adaptive
And the second overhang 216b and the 3rd groove 210 are adaptive.Limit element 216 shown in Fig. 8 (b)
First overhang 216a and the second overhang 216b are in the second direction being basically perpendicular to first direction
It is slightly misaligned.
With limit element 216 similarly, limit element 218 also includes the first overhang and convex with first
Extending portion divides the second oppositely extending overhang, wherein, and the first overhang of this limit element 218 and the
Adaptive and limit element 218 the second overhang of two grooves 208 is adaptive with the 4th groove 212.
More specifically, either limit element 216 or the shape of limit element 218, essentially lengthwise, it
The first overhang be configured so that its first installed surface S1 that just can be fitted to frame 202 is limited
In fixed groove, their the second overhang is configured so that it can be fitted to treated arms 204 just
In the groove that second installed surface S2 is limited.Typically, the degree of depth of the groove of this first installed surface S1 and width
Degree is generally identical with the depth and width of the groove of the second installed surface S2, therefore, in a kind of embodiment
In, limit element 216,218 is cuboid, now, owing to their the first overhang and second protrudes out
Part not only shape is identical but also outer surface also flushes against one another so that the groove of the second installed surface S2 can be relative
The groove of the first installed surface S1 is accurately aligned with, as shown in Fig. 8 (a)；In another kind of embodiment, spacing
Element 216,218 is class cuboid, as shown in Fig. 8 (b), now, and their the first overhang and
Though two overhang shapes are identical that outer surface is not generally flush with but the preset distance that staggers it is thus possible to
Make the groove of the second installed surface S2 groove relative to the first installed surface S1 with in second direction and first direction
Accurately stagger predetermined distance.
If being appreciated that, limit element 216 can be replaced by class cuboid or from a kind of specification from cuboid
Class cuboid be replaced by the class cuboid of another kind of specification, then the first groove 206 and the 3rd groove 210 energy
Enough State Transferring aligned with each other from two grooves stagger on the second direction substantially vertical with first direction
Predetermined distance or from certain predetermined distance conversion of staggering on the second direction substantially vertical with first direction
To another predetermined distance that staggers.
Likewise, it is understood that, if limit element 218 can from cuboid be replaced by class cuboid or from
The class cuboid of a kind of specification is replaced by the class cuboid of another kind of specification, then the second groove 208 and the 4th is recessed
Groove 212 can be from two grooves State Transferring the most aligned with each other to basic with second direction
The predetermined distance that staggers on vertical first direction or from the first direction substantially vertical with second direction
Certain predetermined distance that staggers is transformed into and staggers on the first direction substantially vertical with second direction that another is predetermined
Distance.Therefore, by changing limit element 216 or limit element 218, frame can be parallel to
In the plane of the rotational plane of 202 in second direction or first direction or the second and first both direction
The intersection point of the central axis of adjustment for the treatment of head and the pivot center of frame 202 and the theoretical position of isocenter point
Deviation is to be in preset range, including the situation overlapped with the theoretical position of isocenter point.Easily reason
Solve, generally, during installation, use anti-pushing manipulation, i.e. first know the central axis for the treatment of head and turning of frame 202
The deviation value of the intersection point of moving axis line and the theoretical position of isocenter point changes limit element again.Such as, when spacing
When element 216,218 is cuboid, learn the pivot center of the treatment central axis of head and frame 202
Intersection point drifts out the situation of the theoretical position of isocenter point within being parallel to the plane of rotational plane of frame 202,
Again limit element 216,218 is replaced by correspondence class cuboid (or, proper irregular length
Cube).Without limitation, the limit element of aforementioned this rule cuboid can be referred to as the spacing unit of benchmark
Part, and it is possible to be referred to as benchmark installment state by the installment state being fitted with this benchmark limit element.Also
Easy to understand, limit element 216 or limit element 218 specification between any two are slightly different, and
And these specifications can be preset, for example, it is possible to stagger ladderingly 0.1mm or 0.2mm or
Person 0.25mm, if when record within being parallel to the plane of rotational plane of frame 202 with the center such as theoretical
When there is deviation point position and can be corrected, i.e. it is changed to the limit element of correspondence.
It is further appreciated that the shape of aforesaid limited block is not restrictive but exemplary.Such as, front
It can be erose for stating benchmark limit element, such as, at first groove 206 of the first installed surface S1
With the 3rd groove 210 of the second installed surface S2 when second direction staggers 5cm, the central axis for the treatment of head and
The intersection point of the pivot center of frame and the most just connects within being parallel to the plane of rotational plane of frame
During the theoretical position of nearly isocenter point, then, correspondingly, the first overhang and the shape of the second overhang
Stagger the in a second direction limit element of 5cm of shape is suitable as benchmark limit element.It is additionally, since
Other recoverable state is the fine setting made based on this benchmark installment state, such as, then aforementioned 5cm's
On the basis of stagger 0.25mm, therefore the first overhang of all of limit element and the shape of the second overhang
The most all stagger.It is, therefore, to be understood that the shape of limit element 216,218 depends on
The shape of the groove of one installed surface and the second installed surface.
In prior exemplary embodiment, the groove that the first installed surface S1 and the second installed surface S2 limits as
The through slot of decussation, positional precision and the dimensional accuracy of groove are the highest, on the one hand are used for providing frame
Being accurately positioned between 202 and treated arms 204, on the other hand can significantly improve frame 202 and treated arms
The coupling stiffness of 204, efficiently avoid the impact of rigid body displacement isocenter precision at because of joint face.
In conjunction with described above and see Fig. 9, it will be understood that parallel with the rotational plane of frame 202
In second direction in plane, the correction of the intersection point of the central axis for the treatment of head and the pivot center of frame 202
Process is as follows:
S102: providing frame 202, described frame 202 has the first installed surface S1, described first installed surface
Groove 206 along a first direction and the groove 208 along second direction, described second party is defined on S1
To being basically perpendicular to first direction；
S104: providing treated arms 204, described treated arms 204 has the first end and the second end, wherein the first end
There is the second installed surface S2, described second installed surface S2 defines groove 210 along a first direction and edge
The groove 212 of second direction, described second end is fixed with treatment head；
S106: the first limit element 216 of the first specification, the first limit element of described first specification are provided
The groove 210 of 216 grooves 206 adapting to described first installed surface S1 and described second installed surface S2 so that
The described the most described frame of treated arms 204 202 is in the plane paralleled with the rotational plane of described frame 202
Inner position；
Described first peace of S108: the second installed surface S2 of fixing described treated arms 204 to described frame 202
On the S1 of dress face；
S110: measure the intersection point between central axis and the pivot center of described frame 202 of described treatment head
Position in the plane paralleled with the rotational plane of described frame 202 and precalculated position are in described second party
Deviation upwards, described deviation exceedes preset range；
S112: dismantle the connection between described treated arms 204 and described frame 202 and remove described first rule
First limit element 216 of lattice；
S114: provide the first limit element 216 of the second specification to adapt to the groove of described first installed surface S1
The groove 210 of 206 and described second installed surface S2 is so that the central axis of described treatment head and described frame 202
Pivot center between intersection point move in the plane paralleled with the rotational plane of described frame 202 thus
The deviation making them is in preset range in a second direction；
Described first peace of S116: the second installed surface S2 of fixing described treated arms 204 to described frame 202
On the S1 of dress face.
It is appreciated that on the first direction in the plane paralleled with the rotational plane of frame, treatment head
The correction of the intersection point of the pivot center of central axis and frame 202, including: after S104 and S108 it
Front step:
S107: the first limit element 218 of the first specification, the first limit element of described first specification are provided
The groove 212 of 218 grooves 208 adapting to described first installed surface S1 and described second installed surface S2 so that
The described the most described frame of treated arms 204 202 is in the plane paralleled with the rotational plane of described frame 202
Inner position；
Further, include side by side with S110:
S111: measure the intersection point between central axis and the pivot center of described frame 202 of described treatment head
Position in the plane paralleled with the rotational plane of described frame 202 and precalculated position are in described first party
Deviation upwards, described deviation exceedes preset range；
Further, include side by side with S112:
S113: dismantle the connection between described treated arms 204 and described frame 202 and remove described first rule
First limit element 218 of lattice；
Further, include side by side with S114:
S115: provide the first limit element 218 of the second specification to adapt to the groove of described first installed surface S1
The groove 212 of 208 and described second installed surface S2 is so that the central axis of described treatment head and described frame 202
Pivot center between intersection point move in the plane paralleled with the rotational plane of described frame 202 thus
The deviation making them is in preset range in a first direction.
Limit assembly 214 also includes the second limit element, and this second limit element is for curved to treated arms 204
The correction of Qu Xianxiang.
Specifically, seeing Fig. 4 and Fig. 7, this second limit element includes first group of pad 220 and second group of pad
Sheet 222, described first group of pad 220 is disposed in footpath between the first installed surface S1 and the second installed surface S2
Laterally, second group of pad 222 is disposed in radially between the first installed surface S1 and the second installed surface S2
Inner side, second group of pad 222 and the thickness of first group of pad 220 are configured to identical or are configured to
There is predetermined thickness difference.In exemplary embodiment in the drawings, this first group of pad 220 includes two thickness
Spending identical pad, second group of pad 222 includes the pad that two thickness is identical.Above quantity is example
Property, the quantity of pad is not restricted by the present invention.
According to a kind of exemplary implementation, the thickness of this first group and second group pad 220,222 is homogeneous
With, it is possible to make intersection point and the isocenter point of the central axis of this treatment head and the pivot center of frame 202
The deviation of theoretical position is in preset range (including the situation overlapped).After using a period of time, should
The intersection point of the central axis for the treatment of head and the pivot center of frame 202 is at the rotational plane being perpendicular to frame 202
Plane in drift out with theoretical position, i.e. toe-in slightly downward, and deviation value exceeded error
The scope allowed.At this time, it may be necessary to replace second group of pad 222, wherein, institute with two pads of predetermined thickness
The predetermined thickness stated be greater than before spacer thickness, such as, more than 0.025mm, and this is pre-
Determine the mounted central axis enabling to afterwards treat head of pad of thickness and the intersection point of the pivot center of frame
It is in preset range with the deviation of the theoretical position of isocenter point.
Selectively, according to the implementation that another kind is exemplary, this first group and second group of pad 220,222
Thickness the most identical, and the intersection point of the pivot center of the central axis of this treatment head and frame 202 with etc. in
The deviation of the theoretical position of heart point is in preset range, after using a period of time, and the center of this treatment head
The intersection point of the pivot center of axis and frame 202 in being perpendicular to the plane of rotational plane of frame 202 with etc.
The theoretical position of central point drifts out, i.e. slightly downward toe-in, and deviation has exceeded error permission
Scope.At this time, it may be necessary to replace first group of pad 220 with two pads of predetermined thickness, wherein, described
Predetermined thickness be less than before spacer thickness, and the pad of this predetermined thickness mounted after energy
Enough make the theoretical position of intersection point and the isocenter point treating the pivot center of the central axis of head and frame 202
Deviation be in preset range.It is appreciated that when having changed after pad after a period of time as mentioned above,
Creep due to the treatment local function of head, the release of welding interior stress of treated arms 204 and material etc. because of
The impact of element, treated arms 204 still may bend again thus occur treating central axis and the frame 202 of head
The slightly downward toe-in of intersection point of pivot center and deviation value exceeded the situation of error allowed band,
The most still can change predetermined pads and carry out lifting treatment head.It is appreciated that the aforesaid quantity often organizing pad
And pad quantity to be changed does not limits.
Easy to understand, generally, during installation, use anti-pushing manipulation, first know that deviation changes limit element again.Such as,
When the thickness of limit element 220,222 is homogeneous while, learn the central axis of this treatment head and frame 202
The deviation situation of the intersection point of pivot center and the theoretical position of isocenter point, then calculate need to be replaced spacing
The corresponding one-tenth-value thickness 1/10 of element 220 or 222, it is right to select in limit element 220 or 222 according to this one-tenth-value thickness 1/10
Answering the limit element of thickness, wherein, the one-tenth-value thickness 1/10 calculated and the variable thickness of limit element are the most right surely
Answer, can make as long as the pad of this thickness is arranged between the first installed surface S1 and the second installed surface S2
The intersection point of the central axis of this treatment head and the pivot center of frame 202 is inclined with the theoretical position of isocenter point
Difference is in preset range.The most easy to understand, limit element 220 or limit element 222 two-by-two it
Between specification be slightly different, and what these specifications can be preset, such as can ladderingly
Stagger 0.1mm or 0.2mm or 0.25mm.
By regulating aforesaid second limit element, termly " bowing " phenomenon for the treatment of head is corrected,
Thus offset the errors of centration such as grade that the deformation such as frame for movement creep cause.
In conjunction with described above and see Figure 10, it will be understood that perpendicular with the rotational plane of frame 202
Plane in, the trimming process of the intersection point of the pivot center of the treatment central axis of head and frame 202 is as follows:
S202: providing frame 202, described frame 202 has the first installed surface S1；
S204: providing treated arms 204, described treated arms 204 has the first end and the second end, wherein the first end
Having the second installed surface S2, described second end is fixed with treatment head；
S206: at least two limit element 220,222, described at least two limit element 220,222 are provided
Adapt to the radial outside between described first installed surface S1 and described second installed surface S2 respectively and footpath is inside
Side is so that the most described frame of described treated arms 204 202 is perpendicular with the rotational plane of described frame 202
Plane inner position；
Described first peace of S208: the second installed surface S2 of fixing described treated arms 204 to described frame 202
On the S1 of dress face；
S210: measure the intersection point between central axis and the pivot center of described frame 202 of described treatment head
Deviation between position and the precalculated position in the plane that the rotational plane of described frame 202 is perpendicular,
Described deviation exceedes preset range；
S212: unclamp the connection between described treated arms 204 and described frame 202 and remove one and have
The limit element of one specification；
S214: provide the limit element being removed described in the limit element replacement of the second specification to adapt to described
So that the central axis of described treatment head and described machine between first installed surface S1 and described second installed surface S2
Intersection point between the pivot center of frame 202 moves in the plane perpendicular with the rotational plane of described frame 202
It is dynamic so that their deviation is in preset range；
Described first peace of S216: the second installed surface S2 of fixing described treated arms 204 to described frame 202
On the S1 of dress face.
Foregoing description is only the description to present pre-ferred embodiments, not any limit to the scope of the invention
Fixed, any change that the those of ordinary skill in field of the present invention does according to the disclosure above content, modification, all belong to
Protection domain in claims.
Claims (4)
1. a bearing calibration for the isocenter point of radiotherapy equipment, at least includes:
Thering is provided frame, described frame has the first installed surface, described first installed surface defines along first
The groove in direction；
Thering is provided treated arms, described treated arms has the first end and the second end, and wherein the first end has the second installation
Face, described second installed surface defines groove along a first direction, and described second end is fixed with treatment head；
The first limit element of the first specification, the first limit element of described first specification is provided to adapt to described
The groove of the first installed surface with the groove of described second installed surface so that the relative described frame of described treated arms with
It is fixed to be basically perpendicular in the second direction of described first direction in the plane that the rotational plane of described frame is parallel
Position；
Second installed surface of fixing described treated arms is on described first installed surface of described frame；
Measure intersection point between central axis and the pivot center of described frame of described treatment head with described machine
Position in the plane that the rotational plane of frame is parallel and precalculated position deviation in this second direction, institute
State deviation and exceed preset range；
Dismantle the connection between described treated arms and described frame and remove described first limit element；
The first limit element providing the second specification adapts to the groove of described first installed surface and described second peace
The groove in dress face so that intersection point between the central axis of described treatment head and the pivot center of described frame with
Move so that their deviation is in preset range in the plane that the rotational plane of described frame is parallel；
Second installed surface of fixing described treated arms is on described first installed surface of described frame.
Bearing calibration the most according to claim 1, wherein, in the described treated arms of described dismounting and described frame
Between connection before, also include:
Thering is provided at least two the second limit element, described at least two the second limit element adapts to described respectively
Radial outside between first installed surface and described second installed surface with radially inner side so that described treated arms is relative
Described frame is in the plane inner position perpendicular with the rotational plane of described frame.
Bearing calibration the most according to claim 2, wherein, in fixing described treated arms to described frame
After on, also include:
Measure intersection point between central axis and the pivot center of described frame of described treatment head with described machine
The deviation between position and precalculated position in the plane that the rotational plane of frame is perpendicular, described deviation exceedes pre-
Determine scope；
Unclamp the connection between described treated arms and described frame；
Remove the second limit element of the first specification；
The second limit element providing the second specification is replaced the second limit element of being removed and is adapted to described the
So that the central axis of described treatment head and the rotation of described frame between one installed surface and described second installed surface
Intersection point between axis moves in the plane perpendicular with the rotational plane of described frame so that they inclined
Difference is in preset range；And
Retighten the second installed surface of described treated arms to described first installed surface of described frame.
4. a bearing calibration for the isocenter point of radiotherapy equipment, at least includes:
Thering is provided frame, described frame has the first installed surface；
Thering is provided treated arms, described treated arms has the first end and the second end, and wherein the first end has the second installation
Face, described second end is fixed with treatment head；
Thering is provided at least two limit element, described at least two limit element adapts to described first respectively and installs
Radial outside between face and described second installed surface with radially inner side so that the relative described frame of described treated arms
In the plane inner position perpendicular with the rotational plane of described frame；
Second installed surface of fixing described treated arms is on described first installed surface of described frame；
Measure intersection point between central axis and the pivot center of described frame of described treatment head with described machine
The deviation between position and precalculated position in the plane that the rotational plane of frame is perpendicular, described deviation exceedes pre-
Determine scope；
Unclamp the connection between described treated arms and described frame and remove a spacing unit with the first specification
Part；
The limit element being removed described in the limit element replacement of the second specification is provided and adapts to described first peace
So that the central axis of described treatment head and the pivot center of described frame between dress face and described second installed surface
Between intersection point move so that at their deviation in the plane perpendicular with the rotational plane of described frame
In preset range；
Second installed surface of fixing described treated arms is on described first installed surface of described frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610152607.0A CN105833431B (en) | 2016-03-17 | 2016-03-17 | A kind of bearing calibration of the isocenter point of radiotherapy equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610152607.0A CN105833431B (en) | 2016-03-17 | 2016-03-17 | A kind of bearing calibration of the isocenter point of radiotherapy equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105833431A true CN105833431A (en) | 2016-08-10 |
| CN105833431B CN105833431B (en) | 2018-08-31 |
Family
ID=56587984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610152607.0A Active CN105833431B (en) | 2016-03-17 | 2016-03-17 | A kind of bearing calibration of the isocenter point of radiotherapy equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105833431B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018218684A1 (en) * | 2017-06-02 | 2018-12-06 | 西安大医集团有限公司 | Radiotherapy device calibration method, image calibration tool, storage medium, and program product |
| WO2019222814A1 (en) * | 2018-05-25 | 2019-11-28 | Wip Innovations Pty Ltd | Improvements to linear accelerators |
| CN110538389A (en) * | 2019-09-28 | 2019-12-06 | 中国原子能科学研究院 | Beam flow line deflection device, rotating rack with same and radiation equipment |
| CN111701153A (en) * | 2020-06-23 | 2020-09-25 | 上海联影医疗科技有限公司 | Positioning adjusting mechanism, radiotherapy equipment and isocenter adjusting method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415779Y (en) * | 2000-04-14 | 2001-01-24 | 姚毅 | Secondary parcenter device for medical linear accelerator |
| WO2007016022A2 (en) * | 2005-07-29 | 2007-02-08 | Upmc | A method to implement full six-degree target shift corrections in radiotherapy |
| CN1919374A (en) * | 2005-08-25 | 2007-02-28 | 惠小兵 | Radiation therapeutical irradiation device |
| CN204121044U (en) * | 2014-08-22 | 2015-01-28 | 苏州雷泰医疗科技有限公司 | A kind of patient's positioning equipment and Medical Equipment for Radiotherapy |
-
2016
- 2016-03-17 CN CN201610152607.0A patent/CN105833431B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415779Y (en) * | 2000-04-14 | 2001-01-24 | 姚毅 | Secondary parcenter device for medical linear accelerator |
| WO2007016022A2 (en) * | 2005-07-29 | 2007-02-08 | Upmc | A method to implement full six-degree target shift corrections in radiotherapy |
| CN1919374A (en) * | 2005-08-25 | 2007-02-28 | 惠小兵 | Radiation therapeutical irradiation device |
| CN204121044U (en) * | 2014-08-22 | 2015-01-28 | 苏州雷泰医疗科技有限公司 | A kind of patient's positioning equipment and Medical Equipment for Radiotherapy |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018218684A1 (en) * | 2017-06-02 | 2018-12-06 | 西安大医集团有限公司 | Radiotherapy device calibration method, image calibration tool, storage medium, and program product |
| US12005273B2 (en) | 2017-06-02 | 2024-06-11 | Our United Corporation | Calibration method, device and storage medium of radiotherapy equipment |
| WO2019222814A1 (en) * | 2018-05-25 | 2019-11-28 | Wip Innovations Pty Ltd | Improvements to linear accelerators |
| CN112492877A (en) * | 2018-05-25 | 2021-03-12 | 微普创新私人有限公司 | Improvements in linear accelerators |
| CN112492877B (en) * | 2018-05-25 | 2023-05-12 | 微普创新私人有限公司 | Improvements to linear accelerators |
| US12083362B2 (en) | 2018-05-25 | 2024-09-10 | Wip Innovations Pty Ltd | To linear accelerators |
| CN110538389A (en) * | 2019-09-28 | 2019-12-06 | 中国原子能科学研究院 | Beam flow line deflection device, rotating rack with same and radiation equipment |
| CN111701153A (en) * | 2020-06-23 | 2020-09-25 | 上海联影医疗科技有限公司 | Positioning adjusting mechanism, radiotherapy equipment and isocenter adjusting method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105833431B (en) | 2018-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105833431A (en) | Isocenter correction method of radiotherapy equipment | |
| JP6106717B2 (en) | Device for operating table height adjustment | |
| EP3525328B1 (en) | Apparatus and method for assembling the teeth that constitute the stator poles of a stator | |
| WO2018167643A1 (en) | Single-axis solar tracker | |
| CN205814879U (en) | A kind of radiotherapy equipment | |
| CN106687845B (en) | The assemble method of lens holding frames, lens assembling body and lens assembling body | |
| JP2012225372A (en) | Coupling | |
| JP6668369B2 (en) | Compensation device and clamping device for a workpiece provided in this type of compensation device | |
| CN108713119A (en) | Lockable friction joint for the positioning that is pivoted relative to each other for adjusting pipeline section | |
| TW201121672A (en) | Sliding block for an articulated spindle | |
| CN105797281A (en) | Systems and methods of adjusting rotating gantry system | |
| BR112017001507B1 (en) | APPARATUS AND METHOD FOR GUIDING A GUIDE FIN LOADER REGARDING A TURBINE HOUSING AND A TURBINE HOUSING WITH A GUIDE FIN LOADER | |
| CA2947511A1 (en) | Guide rail assembly as well as guide rail holder | |
| KR102159192B1 (en) | Hydraulic Lifting Machine for Steel Frame | |
| EP2805793B1 (en) | Guide frame support device | |
| JP6653163B2 (en) | Installation method of seismic isolation bearing and torsion adjustment device | |
| JPS6319282B2 (en) | ||
| JP4839423B2 (en) | Motor shaft adjusting jig and motor shaft adjusting method | |
| CN203610894U (en) | Angle positioning ruler of tooth seat of roller | |
| KR101527695B1 (en) | Boring device | |
| CN204985577U (en) | Crank formula drive arrangement | |
| KR101719412B1 (en) | Torsion Block of Rheometer | |
| CN106944821B (en) | Easily-replaced accurate positioning device and implementation method | |
| EP3897089B1 (en) | Device for processing the soil | |
| CN203359630U (en) | Band saw blade material steering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201807 No. 2258 Chengbei Road, Jiading Industrial Zone, Jiading District, Shanghai. Patentee after: Shanghai Lianying Medical Technology Co., Ltd Address before: 201807 No. 2258 Chengbei Road, Jiading Industrial Zone, Jiading District, Shanghai. Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |