CN209714022U - A kind of radiotherapy system - Google Patents

Abstract

This application discloses a kind of radiotherapy systems, belong to field of medical technology.Radiotherapy system, including source device is penetrated, the source device of penetrating includes load source body and collimation body, multiple radioactive sources is provided on the body of the load source, the multiple radioactive source is being preset in angular range in the angle of longitudinal；Collimating aperture is provided on the collimation body, the collimating aperture that the beam that the multiple radioactive source issues passes through on collimation body intersects at public focus.

Description

A kind of radiotherapy system

Technical field

This application involves field of medical technology, in particular to a kind of radiotherapy system.

Background technique

With the development of medical technology, radiotherapy is more and more widely used in the treatment to tumour.

It is existing for treat the radiotherapy system on head mainly to include gamma-knife on head, utilize natural isotope in fact Radioactive source cobalt -60 is issued gamma-rays and is killed using the radioactivity of ray through tumour cell.But since ray can also damage simultaneously Normal tissue or cell, therefore existing gamma-knife on head comprising 30 or 180 radioactive sources, multiple radioactive sources never Tongfang To issuing beam respectively and focusing on a public focus, then the roentgen dose X rate at public focus is maximum, and each radioactive source The damage of the beam normal tissue or cell of sending is smaller, kills tumour cell to play while protecting normal tissue or thin The purpose of born of the same parents realizes oncotherapy effect.

But in head tumor therapeutic process, need to avoid sensitive organization's organ (such as eyes and other important nerves etc.), Existing radiotherapy apparatus passes through the pitch angle for adjusting head by adjusting the gamma angle of patient to avoid sensitive organization's organ Irradiation.

The application provides a kind of new sensitive organization's Organoprotective implementation.

Utility model content

This application provides a kind of radiotherapy systems, can protect sensitive organization's organ over the course for the treatment of.

The technical solution is as follows:

On the one hand, a kind of radiotherapy system is provided, including penetrates source device, the source device of penetrating includes load source body and standard Stretched, is provided with multiple radioactive sources on the body of the load source, the multiple radioactive source longitudinal angle in default angle model In enclosing；Collimating aperture is provided on the collimation body, the beam that the multiple radioactive source issues passes through the collimating aperture phase on collimation body Meet at public focus.

Technical solution provided by the present application has the benefit that

This application provides a kind of radiotherapy systems, wherein penetrating source device includes that load source body and collimation body are carried and set on the body of source Multiple radioactive sources are equipped with, multiple radioactive sources are being preset in angular range in the angle of longitudinal；Collimation is provided on collimation body Hole, the collimating aperture that the beam that multiple radioactive sources issue passes through on collimation body intersect at public focus.Due to multiple distribution of radiation In the default angular range of longitudinal, then multiple radioactive sources can be driven to revolve along the central axis of radiotherapy apparatus by carrying source body Turn, so as to which when by sensitive organization or organ, radioactive source is carried out pass source；Radioactive source when by normal tissue organ It increases income, so as to be protected to sensitive organizations' organs such as protection eyes, avoid volume in head tumor therapeutic process Outer injury.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings Other attached drawings.

Fig. 1 is a kind of structural schematic diagram of existing radiotherapy apparatus provided by the embodiments of the present application；

Fig. 2 is the existing structural schematic diagram for penetrating source device of one kind provided by the embodiments of the present application；

Fig. 3 is a kind of overlooking structure diagram of existing load source body provided by the embodiments of the present application；

Fig. 4 is the overlooking structure diagram of the existing collimation body of one kind provided by the embodiments of the present application；

Fig. 5 is a kind of load source body schematic diagram provided by the embodiments of the present application；

Fig. 6 is a kind of collimation body schematic diagram provided by the embodiments of the present application；

Fig. 7 is a kind of radiotherapy system schematic diagram provided by the embodiments of the present application；

Fig. 8 is another radiotherapy system schematic diagram provided by the embodiments of the present application；

Fig. 9 is another load source provided by the embodiments of the present application body schematic diagram；

Figure 10 is another collimation body schematic diagram provided by the embodiments of the present application；

Figure 11 is another radiotherapy system schematic diagram provided by the embodiments of the present application；

Figure 12 is another radiotherapy system schematic diagram provided by the embodiments of the present application；

Figure 13 is another collimation body schematic diagram provided by the embodiments of the present application；

Figure 14 is a kind of switch body schematic diagram provided by the embodiments of the present application；

Figure 15 is a kind of control driving method schematic diagram provided by the embodiments of the present application；

Figure 16 is provided by the embodiments of the present application a kind of to treat irradiates schematic diagram；

Figure 17 is another control driving method schematic diagram provided by the embodiments of the present application；

Figure 18 is another treatment irradiates schematic diagram provided by the embodiments of the present application；

Figure 19 is another control driving method schematic diagram provided by the embodiments of the present application；

Figure 20 is another control driving method schematic diagram provided by the embodiments of the present application；

Figure 21 is another control driving method schematic diagram provided by the embodiments of the present application.

Specific embodiment

To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with attached drawing to the application embodiment party Formula is described in further detail.

The existing radiotherapy apparatus that can be used for head tumor, the principle of the radiotherapy of head tumor institute as shown in Figure 1, Figure 2 Show, carries source body 22 and multiple radioactive sources 111 are installed, the beam that multiple radioactive sources 111 issue is by the collimating aperture on collimation body 23 After intersect at a public focus Q1, and public focus Q1 is located at the penetrating in the cavity of source device 11 of radiotherapy apparatus.Therapeutic bed 12 for carrying patient, and is moved to inside the treatment tank for penetrating source device 11 so that patient's lesion be located at point of intersection with into Row radiotherapy.

Wherein, its load source body 22 of existing radiotherapy apparatus is illustrated in figure 3 bowl-shape, and it is six groups that radioactive source 111, which divides, every group of packet It includes five sources and amounts to 30 radioactive sources 111, be distributed on load source body 22.Collimation body 23 on collimation body 23 as shown in figure 4, set It is equipped with including six groups of collimating channel groups, six groups of collimating channel groups are corresponding with six groups of 111 positions of radioactive source, each collimating channel group packet Four groups are included, solid tungsten bar are filled in the collimating aperture of one of group to realize that pass source shields, each group in addition wraps 5 collimating apertures are included, the collimating aperture of different groups is of different sizes.

Treatment when, can drive Dynamic Loading body 22 and collimation body 23 mutually rotate, come switch different size of collimating aperture with And radioactive source 111 is shielded to realize switch source by collimation body 23, but the size of six groups of collimating apertures switches and switch source is cut simultaneously It changes, cannot individually control one group therein.Therefore, over the course for the treatment of, to avoid eyes (sensitive organization's organ) can only pass through Gamma angle is adjusted, so that ray avoids eyes.

A kind of radiotherapy system provided by the present application, including source device 11 is penetrated, penetrating source device 11 includes 22 He of load source body Body 23 is collimated, carries and is provided with multiple radioactive sources 111 on source body 22, multiple radioactive sources 111 are pressed from both sides in the angle of longitudinal default In angular region；Be provided with multiple collimating aperture groups on collimation body 23, each collimating aperture group longitudinal angle in default angle In range；Each collimating aperture group includes multiple collimating apertures, each collimation of the beam that multiple radioactive sources 111 issue Jing Guo collimating aperture group A public focus Q1 is intersected at behind hole.

Exemplary in the application, penetrating source device 11 can be bowl-shape or tubular, and as shown in Figure 7, Figure 8, then it carries source body 22 can be as shown in figure 5, collimating body 23 can be as shown in fig. 6, carrying source body 22 and collimation body 23 is bowl-shape, longitudinal As shown by arrows in figure, direction is moved towards for 0 ° -360 ° of longitude.Alternatively, penetrating source device 11 can also be tubular, such as Figure 11 institute Show, carrying source body 22 can be as shown in figure 9, collimating body 23 can be as shown in Figure 10, and carrying source body 22 and collimation body 23 is cylinder Shape, longitudinal is as shown by arrows in figure, moves towards direction for 0 ° -360 ° of longitude.Rotary table both ends are in the same size in Figure 11, when So be also possible to it is of different sizes, it is exemplary as shown in figure 12.The application is for penetrating the concrete shape of source device 11 without limitation, only For above-mentioned.

By taking Fig. 7, radiotherapy apparatus shown in Fig. 8 as an example, illustrate the angular range of the application.As shown in figure 5, radioactive source 111 In the angle of the longitudinal angle that be with the center of radioactive source 111 be with reference to formation.It is necessary to be noted that if putting Penetrating source 111 includes a row, and positioned at the center of multiple radioactive sources 111 of same row on same meridian, then it is assumed that multiple Radioactive source 111 is zero degree in the angle of longitudinal, in the application, presets angular range and is more than or equal to zero degree.As shown in fig. 6, It is angle with reference to formation that collimate body 23, which in the angle of longitudinal be with the center for collimating body 23,.Need exist for special instruction It is, if collimation body 23 includes a row, and positioned at the center of multiple collimation bodies 23 of same row on same meridian, then it is assumed that Multiple collimation body 23 is zero degree in the angle of longitudinal, in the application, presets angular range and is more than or equal to zero degree.

As shown in figure 5, being a kind of load source body 22 provided by the present application, carries and be provided with multiple radioactive sources 111 on source body 22, it is more A radioactive source 111 is A in the angle of longitudinal.Exemplary, which can be 15 ° -60 °, i.e. and 15 °≤A≤ 60 °, default angular range A can be any angle within the scope of 15 ° -60 °, exemplary, which can be 5 ° -60 °, i.e. 5 °≤A≤60 °, default angular range A can be any angle within the scope of 5 ° -60 °, exemplary, preset angle Range A can be 5 °, 8 °, 10 °, 12 °, 18 °, 20 °, 25 °, 30 °, 40 °, 45 °, 50 ° or 60 °.For of radioactive source 111 Several and arrangement mode, without limitation, the number of corresponding radioactive source 111 generally can be 20-180 to the application, such as can be with It is 30 or 180.Only only illustrated by taking 24 radioactive sources 111 as an example shown in Fig. 5.

It is exemplary, as shown in fig. 6, the collimation body 23 bowl-shape for one kind provided by the present application, Fig. 6 are arranged on body 23 with collimating For having 4 collimating aperture groups, respectively 1. number collimating aperture group, 2. number collimating aperture group, 3. number collimating aperture group, and 4. number collimating aperture Group, each collimating aperture group respectively include 24 collimating apertures, and corresponding with the distribution of radioactive source 111.By taking 1. number collimating aperture group as an example, The beam that multiple radioactive sources 111 issue intersects at a public focus Q1 after 1. each collimating aperture of number collimating aperture group.Wherein, 1. number collimating aperture group, 2. number collimating aperture group, 3. number collimating aperture group, and 4. number collimating aperture group in the angle of longitudinal in default folder In angular region, Fig. 6 is by taking 1. number collimating aperture group as an example, 1. folder of number collimating aperture group in longitudinal (arrow direction shown in fig. 6) Angle is A, exemplary, which, with the default angle for the radioactive source 111 for carrying source body 22, is 5 ° -60 °.

Multiple collimating aperture groups are provided on collimation body 23, can collimate and be provided with two or more collimating apertures on body 23 Group, Fig. 6 are only illustrated for collimating and 4 collimating aperture groups are arranged on body 23.Each collimating aperture group includes multiple collimations Hole, multiple collimating aperture correspond to radioactive source 111 number and arrangement mode with carry source body 22 on multiple radioactive sources 111 it is corresponding, So that the beam that radioactive source 111 issues intersects at a public focus Q1 after passing through collimating aperture.

It is exemplary, it as shown in figure 11, penetrates source device 11 and is also possible to tubular, be then also possible to as shown in figure 9, carrying source body 22 Tubular as shown in Figure 9, longitudinal are direction shown in arrow in Fig. 9.Tubular carries 22 both ends size one of source body in Fig. 9 For cause.For the specific number and arrangement mode of radioactive source 111, the application without limitation, is only radiated in Fig. 9 with including 20 It is illustrated for source 111.Collimation body 23 is also possible to tubular as shown in Figure 10, the corresponding radiation of multiple collimating aperture The number and arrangement mode in source 111, this will not be repeated here.The application does not limit the number of the collimating aperture group on collimation body 23 It is fixed, to collimate on body 23 setting there are two for collimating aperture group in Figure 10, and for each collimating aperture group includes 20 collimating apertures It is illustrated.

Certainly, source device 11 is penetrated to be also possible to as shown in figure 12, penetrate source device 11 and be also possible to tubular, tubular in Figure 12 For load source 22 both ends of body are of different sizes.

A kind of radiotherapy apparatus provided by the present application is provided with multiple radioactive sources 111 on radiotherapy apparatus, collimates and sets on body 23 Multiple collimating aperture groups are equipped with, the angle of 111 longitudinal of radioactive source is in default angular range；Multiple radiation on load source body 22 Source 111 is distributed in the default angular range of longitudinal, then radiotherapy apparatus can drive multiple radioactive sources by carrying source body 22 Radioactive source 111 is carried out pass source when by sensitive organization or organ along the center axis rotation of radiotherapy apparatus by 111；By just Radioactive source 111 is increased income when normal histoorgan, so as in head tumor therapeutic process, group sensitive to protection eyes etc. It knits organ to be protected, avoids additional injury.

Below specifically to be illustrated to load source provided by the present application body 22 shown in Fig. 5.

Exemplary, load source provided by the present application body 22, in longitudinal, multiple radioactive sources 111 divide for multiple groups, and adjacent two The angular range of group radioactive source 111 is 2 ° -15 °.It is exemplary, in multiple groups radioactive source 111, two groups of radioactive sources 111 of arbitrary neighborhood Angle it is all the same, alternatively, the angle of different two adjacent groups radioactive sources 111 is different, the application is not limited this, Fig. 5 institute Show that only one kind illustrates.As shown in figure 5, it is 5 groups that multiple radioactive sources 111, which divide, the angle of two groups of adjacent radioactive sources 111 is For B (Fig. 5 is for two groups illustrated), which can be 2 ° -15 °, i.e. 2 °≤B≤15 °, and default included angle B can be Any angle within the scope of 2 ° -15 °, it is exemplary, default angular range B can be 2 °, 2.5 °, 3,5 °, 6 °, 8 °, 10 °, 12 or 15°。

Load source provided by the present application body 22, multiple radioactive sources 111 are 20 ° -60 ° in latitudinal angular range.Example , as shown in figure 5, carry source body 22 is provided with multiple radioactive sources 111 in the preset range C of longitudinal.Exemplary, this is default Angular range C can be 20 ° -60 °, i.e. 20 °≤C≤60 °, and default angular range C can be any folder within the scope of 20 ° -60 ° Angle, exemplary, default angular range C can be 20 °, 25 °, 30 °, 38 °, 40 °, 45 °, 50 °, 53 ° or 60 °.

It is exemplary, load source provided by the present application body 22, on latitude direction, the angle of two radioactive sources 111 of arbitrary neighborhood Range is 1 ° -10 °.It is exemplary, in multiple groups radioactive source 111, the angle of two groups of radioactive sources 111 of arbitrary neighborhood on latitude direction All the same, alternatively, the angle of two groups of radioactive sources 111 of arbitrary neighborhood is different on latitude direction, the application does not limit this It is fixed, it is only that one kind illustrates shown in Fig. 5.It is exemplary, as shown in figure 5, this two put by taking two of them radioactive source 111 as an example It is D that source 111, which is penetrated, in latitudinal angle, and angle D can be 1 ° -10 °, i.e. 1 °≤D≤10 °, and default angle D can be Any angle within the scope of 1 ° -10 °, exemplary, default angular range D can be 1 °, 2 °, 3,5 °, 6 °, 8 °, 9 ° or 10 °.

Load source shown in fig. 5 body 22, in longitudinal include with radioactive source 111 it is multiple rows of, positioned at the radioactive source 111 of same row Longitude is identical, be also classified on latitude direction it is multiple rows of, positioned at 111 latitude of radioactive source of same row it is identical for.Further, it is Example realizes noncoplanar irradiation, preferably protects normal tissue, load source provided by the present application body 22, radioactive source 111 is in latitude direction On, position is different.I.e. each its latitude of radioactive source 111 is different.

Load source provided by the present application body 22 carries and is provided with multiple 111 holes of radioactive source on source body 22, the fixed peace of radioactive source 111 In 111 hole of radioactive source.It is provided with the source casket position to match with source box shape on source body 22 alternatively, carrying, source casket can fix peace At the casket position of source, multiple radioactive sources 111 are installed on the casket of source.Exemplary, source casket position can be through-hole, be also possible to blind hole, And multiple collimating apertures are provided on carrying source body 22, it is issued so that the beam that radioactive source 111 issues can pass through the collimating aperture. The application for source casket and source casket position shape and structure without limitation.

Active casket interconnecting piece is also set up on load source body 22, for the fixed source casket being located at source casket position.Similarly, on the casket of source It is provided with the interconnecting piece for connecting with source casket position.Exemplary, carrying source body 22 and source casket can be and be connected by screw to, can also be with To be connected by a snap, the connection and fixed form for source casket and source casket position, the application without limitation, only for above-mentioned into Row illustrates.

Load source provided by the present application body 22 is additionally provided with the interconnecting piece for taking source casket on the casket of source.It is exemplary, source casket interconnecting piece It can be screw hole, it can be by being threadedly coupled with stem bar.Connect alternatively, source casket interconnecting piece and stem bar can be magnet absorption It connects.Mode is taken for the connection and source casket of source casket and stem bar, the application without limitation, only shown for above-mentioned Example explanation.

The material of load source provided by the present application body 22, the source source Xia Yuzai body 22 is different.Exemplary, source casket can be to be closed by tungsten Gold is formed, and load source body 22 can be to be formed by cast iron.

Below specifically to be illustrated to collimation body 23 provided by the present application shown in Fig. 6.

Collimation body 23 provided by the present application, in longitudinal, the spacing of two neighboring collimating aperture is greater than radioactive source 111 Size.To can also only be misplaced smaller angle by collimate body 23 and radioactive source 111, so that between collimating aperture Away from radioactive source 111 is shielded, avoid shielding using mask bit P1, because only needing the smaller angle that misplaces, so as to realize High-speed switch source.

It is exemplary, collimation body 23 provided by the present application, in longitudinal, each collimating aperture group include it is multiple rows of, adjacent two The angular range for arranging radioactive source 111 is 2 ° -15 °.Exemplary, in collimating aperture group, two rows of angles of arbitrary neighborhood are all the same, or The angle of person, different adjacent two rows are different, and the application does not limit this, and are only that one kind illustrates shown in Fig. 6.Such as Fig. 6 Shown, multiple radioactive sources 111 divide for 4 rows, should for the angle of adjacent row's collimating aperture is B (Fig. 4 is by taking the two rows illustrated as an example) Included angle B can be 2 ° -15 °, i.e. 2 °≤B≤15 °, and default included angle B can be any angle within the scope of 2 ° -15 °, exemplary, Default angular range B can be 2 °, 2.5 °, 3,5 °, 6 °, 8 °, 10 °, 12 or 15 °.

Collimation body 23 provided by the present application, collimating aperture group are 20 ° -60 ° in latitudinal angular range.It is exemplary, such as Shown in Fig. 6, which can be 20 ° -60 °, i.e. 20 °≤C≤60 °, and default angular range C can be 20 ° -60 ° Any angle in range, it is exemplary, default angular range C can be 20 °, 25 °, 30 °, 38 °, 40 °, 45 °, 50 °, 53 ° or 60°。

It is exemplary, collimation body 23 provided by the present application, on latitude direction, the angular range of two collimating apertures of arbitrary neighborhood It is 1 ° -10 °.Exemplary, the angle of two collimating apertures of arbitrary neighborhood is all the same on latitude direction, alternatively, in latitude direction The angle of two collimating apertures of upper arbitrary neighborhood is different, and the application does not limit this, and is only that one kind illustrates shown in Fig. 6. It is exemplary, as shown in fig. 6, two collimating apertures are D in latitudinal angle, angle D by taking two of them collimating aperture as an example Can be 1 ° -10 °, i.e. 1 °≤D≤10 °, default angle D can be any angle within the scope of 1 ° -10 °, and it is exemplary, it presets Angular range D can be 1 °, 2 °, 3,5 °, 6 °, 8 °, 9 ° or 10 °.

Collimation body 23 shown in fig. 6, in longitudinal include with the collimating aperture of collimating aperture group it is multiple rows of, positioned at putting for same row It is identical to penetrate 111 longitude of source, be also classified on latitude direction it is multiple rows of, positioned at 111 latitude of radioactive source of same row it is identical for.Into one Step, for realize noncoplanar irradiation, preferably protect normal tissue, load source provided by the present application body 22, collimating aperture is in latitude On direction, position is different.I.e. each its latitude of collimating aperture is different.

Collimation body 23 provided by the present application, collimation body 23 further includes mask bit P1, for shielding penetrating for multiple radioactive sources 111 Beam.Pass source can be realized by the ray of the shielding radioactive source 111 of collimation body 23.The application is shielding mask bit P1 The specific location of body 21 without limitation, is illustrated so that mask bit P1 is opposite with each collimating aperture group position as an example in Fig. 6.

Exemplary, collimation body 23 provided by the present application, mask bit P1 is located at two of arbitrary neighborhood in multiple collimating aperture groups Between collimating aperture group.It is exemplary, as shown in figure 13, be positioned at 2. number collimating aperture group and 3. between number collimating aperture group with mask bit P1 Example is illustrated.

In Figure 13 only for including a mask bit P1, collimation body 23 provided by the present application, collimation body 23 includes multiple Mask bit P1.For example, it is also possible to which mask bit P1 is arranged between 1. number collimating aperture group and 2. number collimating aperture group.It is also possible to 3. Number collimating aperture group and 4. mask bit P1 is set between number collimating aperture group.It is also possible between each two adjacent collimating aperture groups Mask bit P1 is set.The application for multiple mask bit P1 number and distribution without limitation, example is only carried out for above-mentioned Explanation.

Collimation body 23 provided by the present application, collimation body 23 includes the interior collimation body 23 and outer collimation body 23 being fixedly connected, interior The collimating aperture on collimating aperture and outer collimation body 23 on collimation body 23 is correspondingly arranged.That is collimation body 23 can be including bilayer, should Interior collimation body 23 and outer collimation body 23 can be and be connected by screw to fixation.

Collimation body 23 provided by the present application, collimation body 23 include interior collimation body 23 and outer collimation body 23, interior 23 He of collimation body Outer collimation body 23 can relative rotation.It is exemplary, over the course for the treatment of, if accident occurs, it can be realized fastly by interior collimation body 23 Fast Guan Yuan, then rotate outer collimation body 23 and mask bit P1 is made to be directed at radioactive source 111, it, further will be interior to shield radioactive source 111 The mask bit P1 alignment radioactive source 111 for collimating body 23 closes source to realize completely.

Collimation body 23 provided by the present application, the interior collimating aperture collimated on body 23 are taper hole, and/or, on outer collimation body 23 Collimating aperture is straight hole.It is exemplary, it can be for straight hole on interior collimation body 23, outer collimation body 23 is also straight hole；Alternatively, interior collimation Body 23 is taper hole, and outer collimation body 23 is straight hole；Being also possible to interior collimation body 23 and outer collimation body 23 is taper hole.

Collimation body 23 provided by the present application is provided with shield 21 in mask bit P1, and the density of material of shield 21 is greater than Collimate the density of material of body 23.Exemplary, shield 21 is fixedly connected with collimation body 23, and shield 21 can be by tungsten block or lead Fast or its composition of alloy.Collimation body 23 can be to be made of cast iron.To which shield 21 can be realized to the more preferable of radioactive source 111 Shielding.

A kind of radiotherapy system provided by the present application, including source device 11 is penetrated, penetrating source device 11 includes 22 He of load source body Collimation body 23 carries and is provided with multiple radioactive sources 111 on source body 22, multiple radioactive sources 111 longitudinal angle in default angle In range；Collimating aperture is provided on collimation body 23, the beam that multiple radioactive sources 111 issue passes through the collimating aperture phase on collimation body 23 Meet at public focus Q1.Since multiple radioactive sources 111 are distributed in the default angular range of longitudinal, then it can pass through load Source body 22 drives multiple radioactive sources 111 along the center axis rotation of radiotherapy apparatus, so as to pass through sensitive organization or organ When, radioactive source 111 is subjected to pass source；Radioactive source 111 is increased income when by normal tissue organ, so as on head In tumor therapeutic procedure, sensitive organizations' organs such as protection eyes are protected, additional injury is avoided.

Description in relation to load source body 22 and collimation body 23 carries source body 22 and collimates the setting side of body 23 only for above-mentioned Formula can be used for tubular and penetrate in the shaft of source, be not described herein.

A kind of radiotherapy system provided by the present application, penetrating source device 11 further includes switch body 24, and switch body 24, which is located at, to be carried Between source body 22 and collimation body 23；At least two groups hole location corresponding with radioactive source 111 is provided in switch body 24, wherein one group of hole Position is through-hole, remaining each group hole location includes through-hole and mask bit P1.It is exemplary, as shown in figure 14,5 are provided in switch body 24 Group hole location, that is, a-e group hole location, wherein a hole location is through-hole, only using a row is through-hole remaining each hole location as mask bit in b hole location It is mask bit P1 that two rows, which are through-hole remaining each hole location, in P1, c hole location, and it is mask bit that three rows, which are through-hole remaining each hole location, in d hole location It is mask bit P1 that four rows, which are through-hole remaining each hole location, in P1, e hole location.It should be noted that mask bit P1 can be in switch body Hole is not provided on 24, being also possible to be provided in switch body 24 in hole but aperture can be filled with tungsten bar, to shield radioactive source 111。

Radiotherapy system provided by the present application is provided with different hole locations, the aperture of different hole locations in switch body 24 Number is different, then can be by making the different hole locations of switch body 24 correspond to radioactive source 111, with the shielded segment radioactive source of selectivity 111, to adjust the dosage of focal point.

A kind of radiotherapy system provided by the present application, carries source body 22 and collimation body 23 can 11 central axis of diffraction source device 360 ° of circle rotations or reciprocating rotary.The central axis reciprocating rotary of load source body 22 and collimation 23 diffraction source device 11 of body, can be Load source body 22 and the collimation reciprocating rotary within the scope of 270 ° of body 23.For the angle of its reciprocating rotary, the application without limitation, only It is illustrated for above-mentioned.

A kind of radiotherapy system provided by the present application, carrying source body 22 and/or collimation body 23 can move along desired guiding trajectory.Show Example, as shown in figure 11, carrying source body 22 and/or collimation body 23 can move along the direction for the central axis for penetrating source device 11.Alternatively, such as Shown in Figure 12, carrying source body 22 and/or collimation body 23 can move along direction A.Specifically, can be load source body 22 along penetrating source device The direction of 11 central axis is mobile, and collimation body 23 is fixed；Alternatively, collimation body 23 is along the direction for the central axis for penetrating source device 11 It is mobile, it is fixed to carry source body 22；It can be along the side for the central axis for penetrating source device 11 alternatively, carrying source body 22 and collimation body 23 To movement.Load source body 22 and/or collimation body 23 are moved along desired guiding trajectory, be can be and are realized switch source.

Radiotherapy system provided by the present application, carries source body 22 and/or collimation body 23 is made of multiple segments.It is exemplary, Radioactive source 111 can be in one of segment of load source body 22, alternatively, the segment can be along the center for penetrating source device 11 The direction of axis is mobile.Collimation body 23 is also possible to be made of multiple segments, and collimation body 23 can be including multiple collimating aperture groups, often A collimating aperture group is correspondingly arranged in a segment, alternatively, multiple collimating aperture groups are arranged in a segment.Again alternatively, collimation body Guan Yuanwei is also provided on 23, a collimating aperture group and a Guan Yuanwei, which can be, to be arranged in a segment.

Radiotherapy system provided by the present application carries source body 22 and is also possible to sheet, it can in above-mentioned multiple segments One segment.For carrying the concrete shape of source body 22, the application is without limitation.

Over the course for the treatment of, it needs for the tumour of patient to be accurately located at public focus Q1, so that radioactive ray will swell Oncocyte kills.But if patient moves in therapeutic process, and radioactive ray shift, and are also harmful to not only bad for treatment Patient health is penetrated in the cavity of source device 11, then nothing in therapeutic process since existing radiotherapy apparatus its public focus Q1 is located at Method is monitored to whether the head of patient moves.Radiotherapy system provided by the present application, public focus Q1, which is located at, penetrates source dress It sets except 11 end face.It is exemplary, as shown in Fig. 8, Figure 11 and Figure 12, public focus Q1 be located at penetrate source device 11 end face it Outside, then facilitate look at and monitor whether patient moves over the course for the treatment of.

Radiotherapy system provided by the present application, radiotherapy system further include imaging device 13, and imaging device 13 is along penetrating The side for penetrating source device 11 is arranged in the central axis direction of source device 11, and public focus Q1 is located at the imaging region of imaging device 13 It is interior.The patient tumors being located in imaging region can be imaged by imaging device 13, confirm that patient is according to image It is no to be subjected to displacement.The precision for carrying out displacement monitoring using image is high.

The radiotherapy system of the application, imaging device 13 be x-ray imaging device 13, CT imaging device 13, ultrasound at As any combination of any one or its in device 13, DSA imaging device 13, MR imaging device 13, PET imaging device 13. Such as imaging device 13 is x-ray imaging device 13, and it is exemplary, it may include that an X is penetrated as shown in Fig. 8, Figure 11 and Figure 12 Ray tube 132 and a plate detection.Or it is also possible to include that two X-ray bulbs 132 and two plates detect, this two The beam crossover that X-ray bulb 132 issues.Certainly, imaging device 13 is also possible to two or more any different imaging devices 13 combination, such as imaging device 13 can be the combination of x-ray imaging device 13 and DSA imaging device 13.The application for The specific set-up mode of imaging device 13 without limitation, is only illustrated for above-mentioned.

Exemplary, in the case where imaging device 13 includes imaging center point, public focus Q1 is overlapped with imaging center point. For example, imaging device 13 includes two X-ray bulbs 132 and the corresponding beam for receiving each sending of X ray tube 132 Two X-ray plates 131, the beam crossover that two X-ray bulbs 132 issue is in public focus Q1.

Radiotherapy system provided by the present application, imaging device 13 are rotatable along 11 central axis of source device is penetrated.Such as Fig. 8, figure Shown in 11 and Figure 12, if imaging device 13 includes an X-ray bulb 132 and an X ray plate 131, if patient is scheming 8, up and down direction shown in Figure 11 and Figure 12 issues movement, can not be judged according to image.Therefore, if imaging device 13 is filled along source of penetrating Set 11 center axis rotations, then the patient image under its available different angle, so as under each angle confirm patient be No sending movement.

Imaging device 13 rotates, and can be and installs rotating device by imaging device 13, such as can be and pass through gear teeth Circle is also possible to through slip ring driving etc..The application for imaging device 13 driving method without limitation.

Radiotherapy system provided by the present application, imaging device 13, which is fixedly connected on, to be penetrated in source device 11.It is exemplary, imaging Device 13 is fixedly connected with either one or two of source body 22 or collimation body 23 is carried.For shown in Fig. 8, ray tube 132 and X-ray Plate 131 can be to be fixedly connected with load source body 22, thus, it carries the rotation of source body 22 and imaging device 13 is driven to rotate, avoid independent The rotation drive device of imaging is set.Certainly, west of a city mulberry device is also possible to be fixedly connected on switch body 24 or collimation body 23, The application does not limit this.

A kind of radiotherapy system provided by the present application, radiotherapy apparatus further include screening arrangement 14, and screening arrangement 14 is located at The side of source device 11 is penetrated, the beam that radioactive source 111 issues is shielded after passing through public focus Q1 by screening arrangement 14.It is exemplary, As shown in Fig. 8, Figure 11 and Figure 12, screening arrangement 14 is located at the side for penetrating the public focus Q1 of source device 11, and radioactive source 111 is sent out Beam out is shielded after passing through public focus Q1 by screening arrangement 14, to avoid radiation extra in therapeutic room.It is exemplary, shielding Device 14 is ring bodies, then radioactive source 111 is received by screening arrangement 14 around one week ray of center axis rotation.Alternatively, shielding Device 14 is shielding slab, can be along 11 center axis rotation of source device is penetrated, to follow 111 Rotation of receiver of radioactive source to pass through public coke Ray after point Q1.It should be noted that therapeutic bed 12 carries patient's movement, then channel is offered on screening arrangement 14, with side Just therapeutic bed 12 is mobile.

Exemplary, the position of screening arrangement 14 and imaging device 13 is arranged without limitation in the application, such as imaging device 13 can be independent fixed setting, be also possible to be arranged inside screening arrangement 14.

Radiotherapy system provided by the present application further includes shield door 15, and shield door 15 is openable or is closed radiotherapy The cavity of system.For shown in Fig. 8, shield door 15 be can be outside the cavity for being arranged in and penetrating source device 11, openable or closure The cavity for penetrating source device 11 can be folding up and down, be also possible to opening and closing left and right.Thus within the non-treatment time, Ke Yitong It crosses shield door 15 and shields beam.Certainly, shield door 15 is also possible to be arranged between imaging device 13 and screening arrangement 14, or The outside of shield door 15 is arranged in person's shield door 15.The application for shield door 15 specific setting position without limitation, only with It is illustrated for shown in Fig. 8.

Radiotherapy system provided by the present application, as shown in fig. 7, being additionally provided between collimation body 23 and load source body 22 anti- Sinking component.Further, penetrating source device 11 further includes the shield 21 outside load source body 22, in shield 21 and carries source Anti-sinking component is additionally provided between body 22.Exemplary, anti-sinking component can be bearing, to avoid collimation body 23 and load source In the case that body 22 drives rotation at one end, the other end occurs sagging.

A kind of control driving method of radiotherapy system provided by the present application controls driving method packet as shown in figure 15 It includes:

Step S1: it obtains at least one and goes out beam angular range.

Step S2: driving radiotherapy system issues beam in beam angular range out and intersects at a public focus.

It should be noted that being controlled since preset zero-bit is generally arranged in the driving device in radiotherapy system in radiation With the zero-bit to refer to during treatment, confirmation driving angle range is driven.In the application, beam angular range, which can be, out is controlled Doctor is treated according to the tumor image of patient, include in the corresponding treatment plan of formulation needs radiotherapy system to issue beam It is irradiated the angular range for the treatment of, and the angular range is the angular range of driving device driving.It is exemplary, such as Figure 16 institute Show, treating physician is according to the tumor image of patient, and in the works, radiotherapy system is shone the corresponding treatment of formulation in the section B1 Treatment is penetrated, and (region A1 is the irradiation area for including two eyes, and ray damage is avoided to regard without irradiation treatment in the section A1 Nerve), then the driving angle range that beam angular range drives radiographic source to be irradiated in the section B1 out for driving device, shielding angle Degree range is that driving device drives radiographic source to avoid the driving angle range being irradiated in the section A1.Only in B1 when radiotherapy Rotary irradiation within the scope of the driving angle that section is irradiated, so as to avoid irradiation eyes from injuring sensitive organization.Show Example, driving angle range is the rotation angle of motor.And in the application, if radiotherapy system rotation drives more than 360 ° Angular range is also above 360 °.Alternatively, if rotating cycle, and different circles more than 360 °, are demarcated in radiotherapy system rotation The corresponding driving angle range of number.

Certainly, 1 region of corresponding A is also possible to when radiotherapy and the region B1 carries out rotary irradiation, then beam angle degree model out The driving angle range to be irradiated in the section A1 and the region B1 is enclosed, such as can be 360 °.At this point it is possible to pass through reduction Irradiation time reduces the received dosage of sensitive organization's such as optic nerve, to protect sensitive organization's organ.

A kind of control driving method provided by the present application, radiotherapy system include multiple radiographic sources, multiple radiographic sources Source point is within the scope of the predetermined angle in longitudinal, control driving method include: at least one is obtained to go out beam angular range, and Driving radiotherapy system issues beam in beam angular range out and intersects at a public focus, to treat in head tumor Cheng Zhong protects sensitive organizations' organs such as protection eyes, avoids additional injury.

A kind of control driving method provided by the present application, as shown in figure 17, further includes:

Step S3: at least one degree of protection range is obtained.At least one degree of protection range is less than 360 °.

As shown in figure 18, radiotherapy system is irradiated treatment in the section B1 and B2, and the section A1 and A2 without Irradiation treatment (A1 and A2 correspond to eye areas, avoid ray damage optic nerve), then beam angular range is driving device driving out The driving angle range that radiographic source is irradiated in the section B1 and B2, degree of protection range are that driving device drives radiographic source in A1 The driving angle range being irradiated is avoided with the section A2.

Step S4: driving radiotherapy system, so that the beam of the radiographic source within the scope of degree of protection does not issue.

A kind of control driving method provided by the present application, radiotherapy system include multiple radiographic sources, multiple radiographic sources Source point is within the scope of the predetermined angle in longitudinal, control driving method include: obtain at least one go out beam angular range with And at least one degree of protection range, and drive radiotherapy system to issue beam in beam angular range out and intersect at a public affairs Confocal, the beam of the radiographic source within the scope of degree of protection does not issue.So as in head tumor therapeutic process, to guarantor Eyeshield Jing Deng sensitive organization organ is protected, and additional injury is avoided.

Exemplary, at least one of which goes out beam angular range and one of degree of protection range is adjacent.Such as Figure 18 institute Show, the section B1 and B2 is irradiated treatment, and in the section A1 and A2 without irradiation treatment, due to the section B1 and the section A1 phase Neighbour, then the degree of protection range for going out 1 section of beam angular range and corresponding A for corresponding to the section B1 are adjacent.

Control driving method provided by the present application obtains multiple beam angular ranges out, and at least two go out in beam angular range The speed of radiotherapy system is different.Exemplary, referring to Fig.1 shown in 8, the section B1 and B2 is irradiated treatment, then obtains correspondence The beam angular range out for going out beam angular range and the corresponding section B2 in the section B1, and in radiotherapy system in the corresponding section B1 The speed of beam angular range is V1 out, and the speed for going out beam angular range in the corresponding section B2 is V2, V1 ≠ V2, so as to logical Speed is crossed to adjust the irradiation time at different location and then adjust the dosage of focus.

Exemplary, as shown in figure 16, when radiotherapy, 1 region of corresponding A and the region B1 carry out rotary irradiation, then beam out Angular range is the driving angle range being irradiated in the section A1 and the region B1.It can be, go out beam in the corresponding section B1 The speed of angular range is V1, and the speed for going out beam angular range in 1 section of corresponding A is V2, V1 < V2.I.e. so that in the section A1 When speed be greater than the section B1 speed, thus reduce in the section A1 the received dosage of sensitive organization, to protect sensitive organization Organ.

It should be noted that in the application driving angle range be motor rotation angle, then driving angle range also above 360°.Such as motor is more than 360 °, then demarcates rotating cycle, and the corresponding driving angle range of different circle numbers.At least two The speed of beam angular range internal radiotherapy system is different out, can not correspond to its driving speed of same irradiation section when different circle numbers Degree is different.For example, radiotherapy treatment planning treatment time is 2min, motor driven rotation, which is turned around, needs 1min, as shown in figure 18, Beam angle degree range then is irised out to be V1 in the driving speed that the region B1 is irradiated first, and irising out beam angular range second is It is V2, V1 ≠ V2 in the driving speed that the region B1 is irradiated.

Control driving method provided by the present application, exemplary, as shown above, different two of speed go out beam angular range It is adjacent.

Control driving method provided by the present application, driving radiotherapy system move back and forth in beam angular range out.Show Example, if only obtaining one goes out beam angular range, radiotherapy system can be moved back and forth changing in beam angular range, with Increase the received dosage of tumour.Certainly, if obtain multiple beam angular ranges out, radiotherapy system can also be by changing It is moved back and forth in beam angular range, the received dosage of Lai Zengjia tumour.

Control driving method provided by the present application, in the case where being provided with mask bit on the shield, then such as Figure 17 Middle step S4 specifically: driving radiotherapy system, so that the beam that multiple radioactive sources issue is collimated body shielding.It is exemplary, It can be and drive Dynamic Loading body and collimation body dislocation, so that carrying the gap that the radioactive source on the body of source is collimated between the collimating aperture on body High-speed switch source may be implemented since dislocation Shi Zaiyuan body and collimation body only need to misplace to rotate smaller angle in shielding；Or Person is also possible to drive Dynamic Loading body and collimates body dislocation, so that carrying the shielding bit mask that the radioactive source on the body of source is collimated on body.

Control driving method provided by the present application, in the case where the radiotherapy system further includes switch body, to scheme For shown in 15, as shown in figure 19, drive control method further include:

Step S5: driving switch body, so that the part beam that multiple gamma ray radiators issue is switched on and off the shielding bit mask of body.

Certainly, drive control method as shown in figure 17 is also possible to include step S5, and Figure 19 only to be shown in Figure 15 Example.

Switch body is as shown in figure 14, driving switch body, so that the part beam that multiple gamma ray radiators issue is switched on and off body Shield bit mask, it can by switch body mask bit come the beam of shielded segment radioactive source, to realize the mesh of regulating dosage 's.

Control driving method provided by the present application, in longitudinal, two neighboring collimating aperture in same collimating aperture group Spacing is greater than the size of radioactive source.Then such as step S4 in Figure 17 specifically: driving radiotherapy system so that multiple radioactive sources with Collimating aperture dislocation, the beam that part of radioactive source issues are collimated the fringe region shielding of hole group, what remaining radioactive source issued Beam is collimated the pitch area shielding between hole.It is exemplary, it can be and drive Dynamic Loading body and collimation body dislocation, so that carrying source body On radioactive source be collimated body on collimating aperture between gap shielding, due to dislocation Shi Zaiyuan body and collimation body only need to misplace Smaller angle is rotated, therefore high-speed switch source may be implemented.

Exemplary, the radiotherapy system as shown in Fig. 8, Figure 11 and Figure 12, public focus is located at the end face for penetrating source device Except.Radiotherapy system further includes imaging device, and public focus is located in the imaging region of imaging device.As shown in figure 20, Drive control method further include:

Step S6: imaging device is controlled to obtain the image of patient.

Step S7: according to the image of patient, confirm beam angular range.

It should be noted that going out in step S1, before beam angular range can be radiotherapy, treating physician is according to patient Image confirmation go out beam angular range, in therapeutic process, can be confirmed according to the image of acquisition or be adjusted should go out beam angle degree model It encloses.

Exemplary, the radiotherapy system as shown in Fig. 8, Figure 11 and Figure 12, radiotherapy system further includes imaging device, Public focus is located in the imaging region of imaging device；As shown in figure 21, drive control method further include:

Step S8: imaging device is controlled to obtain the image of patient.

Step S9: according to the image of patient, confirm degree of protection range.

Similarly, before the degree of protection range in step S3 can be radiotherapy, treating physician is true according to the image of patient The degree of protection range recognized in therapeutic process, can confirm according to the image of acquisition or adjust the degree of protection range.

It should be noted that control driving method provided by the present application, the application does not do the sequence of above each step It limits, the application is only illustrated for diagrammatically shown.

The foregoing is merely the alternative embodiments of the application, not to limit the application, it is all in spirit herein and Within principle, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this application.

Claims (23)

1. a kind of radiotherapy system, which is characterized in that including penetrating source device, the source device of penetrating includes load source body and collimation Body,

Be provided with multiple radioactive sources on the body of the load source, the multiple radioactive source longitudinal angle in default angular range It is interior；

Be provided with multiple collimating aperture groups on the collimation body, each collimating aperture group longitudinal angle in default angle In range；

Each collimating aperture group includes multiple collimating apertures, and the beam that the multiple radioactive source issues is by the collimating aperture group A public focus is intersected at after each collimating aperture.

2. radiotherapy system according to claim 1, which is characterized in that the default angular range is 5 ° -60 °.

3. radiotherapy system according to claim 1, which is characterized in that in longitudinal, two neighboring collimating aperture Spacing be greater than radioactive source size.

4. radiotherapy system according to claim 1, which is characterized in that the source device of penetrating further includes switch body, institute Switch body is stated to be located between load source body and collimation body；

At least two groups hole location corresponding with the radioactive source is provided in the switch body, wherein one group of hole location is through-hole, Remaining each group hole location includes through-hole and mask bit.

5. radiotherapy system according to claim 1, which is characterized in that load source body and the collimation body can diffractions 360 ° of circle rotations of source device central axis or reciprocating rotary.

6. radiotherapy system according to claim 1, which is characterized in that load source body and/or the collimation body can It is moved along desired guiding trajectory.

7. radiotherapy system according to claim 6, which is characterized in that load source body and/or the collimation body can It moves in direction along the central axis for penetrating source device.

8. radiotherapy system according to claim 1, which is characterized in that the public focus penetrates source device positioned at described End face except.

9. radiotherapy system according to claim 1, which is characterized in that the radiotherapy system further includes imaging dress It sets, the side for penetrating source device, the public coke is arranged in the central axis direction that the imaging device penetrates source device described in Point is located in the imaging region of the imaging device.

10. radiotherapy system according to claim 9, which is characterized in that the imaging device is x-ray imaging dress It sets, any one or its in CT imaging device, supersonic imaging device, DSA imaging device, MR imaging device, PET imaging device Any combination.

11. radiotherapy system according to claim 10, which is characterized in that in the imaging device include imaging center In the case where point, the public focus is overlapped with the imaging center point.

12. radiotherapy system according to claim 10, which is characterized in that the imaging device includes two X-rays Bulb and corresponding two X-ray plates for receiving the beam that each X-ray bulb issues, described two X-ray bulbs issue Beam crossover in public focus.

13. radiotherapy system according to claim 10, which is characterized in that the imaging device includes an X-ray Bulb and a corresponding X-ray plate for receiving the beam that X-ray bulb issues.

14. radiotherapy system according to claim 13, which is characterized in that the imaging device penetrates source device described in Central axis is rotatable.

15. radiotherapy system according to claim 9, which is characterized in that the imaging device is fixedly connected on described It penetrates in source device.

16. radiotherapy system according to claim 15, which is characterized in that the imaging device and load source body or Either one or two of collimation body is fixedly connected.

17. radiotherapy system according to claim 8, which is characterized in that the radiotherapy system further includes shielding Device, the screening arrangement are located at the side for penetrating source device, and the beam that the radioactive source issues passes through quilt after public focus The screening arrangement shielding.

18. radiotherapy system according to claim 17, which is characterized in that the screening arrangement is ring bodies, alternatively, The screening arrangement is shielding slab, can penetrate source device center axis rotation along described.

19. radiotherapy system according to claim 1, which is characterized in that further include shield door, the shield door can be beaten Open or be closed the cavity of the radiotherapy system.

20. radiotherapy system according to claim 1, which is characterized in that the collimation body and load source body it Between be additionally provided with anti-sinking component.

21. radiotherapy system according to claim 1, which is characterized in that the source device of penetrating further includes shield, In Anti-sinking component is additionally provided between the shield and load source body.

22. radiotherapy system according to claim 1, which is characterized in that load source body and/or collimation body are by multiple Segment composition.

23. radiotherapy system according to claim 22, which is characterized in that in the load source, body includes multiple segments In the case of, the multiple distribution of radiation is in one of segment of load source body.