CN209728182U - The measurement of 4 π radiotherapy dosages and verifying die body - Google Patents

Abstract

The utility model discloses a kind of 4 π radiotherapy dosages measurement and verifying die bodys, including spherical phantom and multiple detectors, wherein multiple detectors are distributed in spherical phantom surface according to diameter of Spherical Volume, form spherical detector array.4 π radiotherapy dosage measurement provided by the utility model and verifying die body, multiple detectors are distributed according to spherical shape, it can measure and verify the beam of 4 π arbitrary direction in space incidences, to the incident direction of ray there is no limit, and, the dynamic 4 π radiotherapy dosage measurement of 4 dimensions and verifying can be carried out under the driving of mechanical motion mechanism.4 π radiotherapy dosage detection and verifying die body, dosimeter measurement and verifying, especially 4 π radiotherapies, stereotactic radiotherapy, robot radiation therapy, fault radiation therapeutic, intensity-modulated radiation therapy, dosimeter measurement and verifying in conventional accelerator radiotherapy can be carried out to the ray of any direction incidence.

Description

The measurement of 4 π radiotherapy dosages and verifying die body

Technical field

The utility model relates to a kind of 4 π radiotherapy dosages measurement and verifying die bodys.

Background technique

The radiotherapy planning formulated for the ray that radiotherapy equipment generates, for needing before treating patient to agent Amount is measured and is verified, it is ensured that and it is radiotherapy plan and actually irradiating to be consistent, so that it is guaranteed that the safety of irradiation And accuracy.These measurements and verifying equipment have the equipment such as dose point, flat panel matrix (2 dimension), 3 dimensions matrix (cylindrical matrix), A point, a face, the dosage measurement of annular surface (perpendicular to matrix rotation one week) and verifying can be completed respectively.

PTW company (Germany), Sun Nuclear company (U.S.), IBA company (Belgium), Standard Imaging The ionisation chamber and semiconductor detector of the companies such as company (U.S.) production can only carry out dose point measurement and verifying, and 2 dimension matrixes are visited The dosage on a face can be measured and verify by surveying device, and 3 dimension matrix detectors can measure the dosage point of 360 ° of annular surfaces Cloth.The film badge of ISP company (U.S.) can only also measure the dosage distribution of one 2 dimension.These point detectors and matrix are visited Device is surveyed, all to the incident angle heavy dependence of ray, there are serious dead angles for measurement direction, can not be to diameter of Spherical Volume any angle Beam measure and verify.

The Delta 4 of ArcCheck, ScandiDos company of Sun Nuclear company, PTW company Octavius 4D 3 dimension matrix detectors, all using cylindrical body design.The detector of ArcCheck is distributed in cylindrical body periphery, Delta4 Using the flat panel matrix detector of two arranged crosswises, only one flat panel matrix detector of Octavius 4D.In measurement, The beam perpendicular to cylindrical body cross section can only be measured, the beam in other directions is unable to measure or even small angle can all introduce Large error.

With the continuous development of radiotherapy technology, the irradiation of radiotherapy apparatus is more flexible, can be from all directions incidence, no longer It sticks to incident from some face.The robot radiation therapy systems such as present ejected wave knife (Accuray Inc., the U.S.), 4 π radiation are controlled Equipment, X knife and γ knife stereotactic radiotherapy equipment, etc. are treated, ray is incident from diameter of Spherical Volume any direction, conventional plate square The measuring devices such as array detector, 3D cylinder matrix detector are all unable to satisfy measurement demand.

Summary of the invention

The technical problem to be solved by the utility model is to provide a kind of 4 π radiotherapy dosages measurement and verifying moulds Body.

In order to achieve the above technical purposes, the utility model adopts the following technical solutions:

The measurement of 4 π radiotherapy dosages of one kind and verifying die body, including spherical phantom and multiple detectors, wherein multiple The detector is distributed in the spherical phantom surface according to diameter of Spherical Volume, forms spherical detector array.

It wherein more preferably, further include mechanical motion mechanism for driving the spherical phantom to realize multi-dimensional movement, it is described Mechanical motion mechanism is connected with mechanical movement control device.

Wherein more preferably, the mechanical motion mechanism includes the three-axis moving guide rail being arranged in pedestal and is arranged in three axis Sliding block on motion guide rail, the spherical phantom are connect by support rod with sliding block；The sliding block passes through described in support rod drive Spherical phantom realizes multi-dimensional movement.

Alternatively, wherein more preferably, the mechanical motion mechanism includes the mechanical arm of multi-joint, the spherical phantom setting exists The end of the mechanical arm.

Wherein more preferably, further include that dosage is read and analytical equipment, the dosage read and analytical equipment respectively with it is described Mechanical movement control device is connected with multiple detectors.

Wherein more preferably, the detector is ionizing radiation detector, gas ionization chamber, ionization of liquid room, semiconductor spy Survey device, any one in dosage film.

Wherein more preferably, the direction of the detector is towards in ball or towards outside ball.

Wherein more preferably, when the detector is omnidirectional's detector, the detector can any direction installation.

Wherein more preferably, the spherical phantom is by any in solid water, glass resin, glass fibre, polystyrene Die body made of a kind of.

Wherein more preferably, multiple detector mosaics are on the spherical phantom surface, alternatively, multiple detectors point It is not removably mounted in the mounting hole for being set to the spherical phantom surface.

4 π radiotherapy dosage measurement provided by the utility model and verifying die body, multiple detectors are according to spherical shape point Cloth can measure and the beams of 4 π arbitrary direction in space incidence of verifying on spherical phantom, and to the incident direction of ray, there is no limit, Under the driving of movement mechanism, carry out the dynamic 4 π radiotherapy dosage measurement of 4 dimensions and verifying.The 4 π radiotherapy dosage Detection and verifying die body are a static dosimeter measurement and verifying die body when die body is remain stationary；Work as mechanical motion machine Structure drives die body movement (1 dimension, 2 dimension ... n maintenance and operations are dynamic), is a dynamic dosimeter survey when simulating the movement of human body or organ Amount and verifying die body.4 π radiotherapy dosage detection and verifying die body can carry out agent to the ray of any direction incidence Amount learn measurement and verifying, especially 4 π radiotherapies, stereotactic radiotherapy, robot radiation therapy, fault radiation therapeutic, Dosimeter measurement and verifying in intensity-modulated radiation therapy, conventional accelerator radiotherapy.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the measurement of 4 π radiotherapy dosage and verifying die body provided by the utility model.

Specific embodiment

The technical solution of the utility model is further described in detail with specific embodiment with reference to the accompanying drawing.

As shown in Figure 1,4 π radiotherapy dosage measurement provided by the utility model and verifying die body, including multiple spies Survey device 1, spherical phantom 2, mechanical motion mechanism 3, mechanical movement control device 4, dosage reading and analytical equipment 6.Wherein, multiple Detector 1 is distributed on the spherome surface of spherical phantom 2 according to diameter of Spherical Volume, forms spherical detector array.Mechanical motion machine Structure 3 and the mechanical movement control device 4 controlled with computer connect, and mechanical motion mechanism 3 is for driving spherical phantom 2 to realize Multi-dimensional movement.Dosage is read and analytical equipment 6 passes through connecting cable 7 with mechanical movement control device 4 and multiple detectors 1 respectively With 8 connections；Dosage is read and analytical equipment 6, for reading the dosage of the measurement of detector 1, analysis and confirmatory measurement result.

Specifically, spherical phantom 2 can be uniform die body (isodensity), and it is (non-homogeneous close to be also possible to inhomogeneity phantom Degree).Spherical phantom 2 can be the die body made of the materials such as solid water, glass fibre, glass resin, polystyrene.

Multiple detectors 1 are distributed in 2 surface of spherical phantom according to diameter of Spherical Volume, form spherical detector array.For example, more A detector 1 can be embedded in 2 surface of spherical phantom according to diameter of Spherical Volume, and for another example, multiple detectors can be detachable respectively It is mounted in the mounting hole for being set to 2 surface of spherical phantom, so as to need to replace detector according to measurement.

Above-mentioned spherical detector array, can with full angle, omnidirection, without dead angle receive and detect each side in 4 spaces π Upward ray, such as X-ray, electric wire, gamma-rays, neutron beam, proton beam, heavy ion beam.Multiple detectors 1 are due to being ball It is three-dimensional from spherical shape can both to have measured 4 π radiotherapies, robot radiation therapy (such as ejected wave knife), X knife, γ knife equipment for shape distribution The beam of spatial emission can also measure this beam around rotary shaft rotary irradiation of conventional intensity modulated radiation therapy.Detector 1 can be Ionizing radiation detector, gas ionization chamber, ionization of liquid room, semiconductor detector, any one in dosage film.Detector It 1 direction can be towards in ball or towards outside ball.When detector 1 is omnidirectional's detector, detector can any direction installation.

Mechanical motion mechanism 3 can both translate fortune for driving spherical phantom 2 to move (1,2,3 ... n) in multiple dimensions Dynamic (left and right, front and back, up and down ...), it can also be with rotary motion (pendulum, rolling, pitching ...).Mechanical motion mechanism includes that setting exists Three-axis moving guide rail 4 in pedestal 5 and the sliding block being arranged on three-axis moving guide rail 4, spherical phantom 2 pass through support rod 3 and sliding Block connection, sliding block by support rod 3 drive spherical phantom 2 realize multi-dimensional movement (anterior-posterior translation, left and right translation, oscilaltion, with And on left and right directions rolling, in the front-back direction pitching and head foot direction pendular movement, etc.).Alternatively, mechanical motion mechanism can also To be the mechanical arm of multi-joint, spherical phantom 2 is arranged in the end of mechanical arm, realizes the multi-dimensional movement of spherical phantom.Above-mentioned machine Tool movement mechanism 3 is connect with the mechanical movement control device 4 with computer control, can simulate the complicated fortune of human body or organ It is dynamic.

In the present embodiment, 4 π radiotherapy dosage detection and verifying die body, it is coplanar suitable for radiotherapy The dosimeter measurement and verifying of incident and non-co-planar (any angle is incident).Multiple detectors 1 are arranged on spherical phantom 2, shape The spherical detector array that can be measured and verify with omnidirection at one, it is arbitrarily square so as to measure and verify 4 π diameter of Spherical Volume The incident direction no dependence of beam is measured without dead angle to incident beam.Moreover, mechanical movement means 3 drive spherical mold Body 2 moves, and simulates the movement of human body or organ, so that spherical phantom 2 is become spherical dynamic phantom (4 maintenance and operation dynamic model body), is transporting Omnidirection measurement and verifying are carried out in dynamic, can carry out dynamic dosimeter measurement and verifying.

Above-mentioned 4 π radiotherapy dosage measurement and verifying die body, it is three-dimensional especially suitable for 4 π radiotherapies, X knife or γ knife The dosimeters of the equipment such as directional radiotherapy, robot radiation therapy measures and verifying, be also applied for fault radiation therapeutic, adjust The dosimeter measurement of the diameter of Spherical Volume any angle irradiation of strong radiotherapy, conventional accelerator radiotherapy etc. and verifying die body.

The measurement of above-mentioned 4 π radiotherapy dosage and verifying die body, are furnished with movement mechanism, can simulate human body or organ Movement can both carry out static dosimeter measurement and verifying, and also can use movement mechanism and carry out dynamic dosimeter measurement And verifying.4 π radiotherapy dosage detection and verifying die body, when remaining stationary, be a static dosimeter measurement and Verify die body；When the movement of mechanical motion mechanism driving die body (1 dimension, 2 dimension ... n maintenance and operations are dynamic), when simulating the movement of human body or organ, It is a dynamic dosimeter measurement and verifying die body.

In conclusion 4 π radiotherapy dosage measurement provided by the utility model and verifying die body, multiple detectors Spherical shape distribution, can measure and the beams of 4 π arbitrary direction in space incidence of verifying, and to the incident direction of ray, there is no limit, is moving Under the driving of mechanism, carry out the dynamic 4 π radiotherapy dosage measurement of 4 dimensions and verifying.The 4 π radiotherapy dosage detection and Die body is verified, dosimeter measurement can be carried out to the ray of any direction incidence and verifying, especially 4 π radiotherapies, solid are determined Agent into radiotherapy, robot radiation therapy, fault radiation therapeutic, intensity-modulated radiation therapy, conventional accelerator radiotherapy Amount learns measurement and verifying.

Die body is measured 4 π radiotherapy dosage provided by the utility model and verifies above to have carried out specifically It is bright.For those of ordinary skill in the art, appoint under the premise of without departing substantially from the utility model in essence spirit to what it was done What obvious change, the infringement for all weighing composition to the utility model patent will undertake corresponding legal liabilities.

Claims (9)

1. a kind of 4 π radiotherapy dosages measurement and verifying die body, it is characterised in that: including spherical phantom and multiple detectors, Wherein, multiple detectors are distributed in the surface of the spherical phantom according to diameter of Spherical Volume, form spherical detector array；

It further include the mechanical motion mechanism for driving the spherical phantom to realize multi-dimensional movement, the mechanical motion mechanism and machine The connection of tool motion control device；

Further include that dosage is read and analytical equipment, the dosage read and analytical equipment respectively with the mechanical movement control device It is connected with multiple detectors.

2. 4 π radiotherapy dosage measurement as described in claim 1 and verifying die body, it is characterised in that:

The mechanical motion mechanism includes the mechanical arm of multi-joint, and the end of the mechanical arm is arranged in the spherical phantom.

3. 4 π radiotherapy dosage measurement as described in claim 1 and verifying die body, it is characterised in that:

The mechanical motion mechanism includes the three-axis moving guide rail being arranged in pedestal and the cunning being arranged on three-axis moving guide rail Block, the spherical phantom are connect by support rod with sliding block；The sliding block drives the spherical phantom realization more by support rod Maintenance and operation is dynamic.

4. 4 π radiotherapy dosage measurement as described in claim 1 and verifying die body, it is characterised in that:

The detector be ionizing radiation detector, gas ionization chamber, ionization of liquid room, semiconductor detector, in dosage film Any one.

5. 4 π radiotherapy dosage measurement as described in claim 1 and verifying die body, it is characterised in that:

The direction of the detector is towards in ball or towards outside ball.

6. 4 π radiotherapy dosage measurement as described in claim 1 and verifying die body, it is characterised in that:

When the detector is omnidirectional's detector, the detector can any direction installation.

7. 4 π radiotherapy dosage measurement as described in claim 1 and verifying die body, it is characterised in that:

The spherical phantom is the die body made of any one in solid water, glass resin, glass fibre, polystyrene.

8. 4 π radiotherapy dosage measurement as described in claim 1 and verifying die body, it is characterised in that:

Multiple detector mosaics are on the surface of the spherical phantom.

9. 4 π radiotherapy dosage measurement as described in claim 1 and verifying die body, it is characterised in that:

Multiple detectors are removably mounted to respectively in the mounting hole for being set to the spherical phantom surface.