CN209984816U - Multi-source focusing radiotherapy head and treatment equipment - Google Patents
Multi-source focusing radiotherapy head and treatment equipment Download PDFInfo
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- CN209984816U CN209984816U CN201790000416.0U CN201790000416U CN209984816U CN 209984816 U CN209984816 U CN 209984816U CN 201790000416 U CN201790000416 U CN 201790000416U CN 209984816 U CN209984816 U CN 209984816U
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
Abstract
The utility model relates to a radiation medical equipment technical field discloses a multisource focus radiotherapy head and treatment facility. The multi-source focusing radiotherapy head comprises a source body and a collimating body, wherein a plurality of source carrying cavities for accommodating radioactive sources and a plurality of corresponding ray outlets are distributed on the source body, a plurality of collimating holes are distributed on the collimating body corresponding to the ray outlets, a plurality of beams emitted by the radioactive sources are converged to a focus position through the collimating holes, and the multi-source focusing radiotherapy head further comprises at least one switch body, wherein the switch body is positioned on one side of the collimating body close to or far away from the focus, and the switch body can move to block/emit partial beams in the beams. The movement of the switch body arranged on one side of the collimation body close to or far away from the focus is controlled to block/emit part of beams in a plurality of beams emitted by the source body, so that the treatment head is locally opened and closed, the aim of accurately adjusting the radiation intensity, improving the dose control precision and further obtaining a better treatment effect is fulfilled.
Description
Technical Field
The invention relates to the technical field of radiation medical equipment, in particular to a multi-source focusing radiation therapy head and treatment equipment.
Background
In the field of modern radiation therapy technology, multi-source focused radiation therapy heads are increasingly used for radiation therapy. The existing multi-source focusing radiotherapy head generally adopts a shielding body, a source body and a collimating body structure, and a ray passage hole of the source body is aligned or staggered with a collimating hole of the collimating body by rotating the collimating body so as to realize the on-off of the radioactive rays of the radioactive source body. However, the control method of turning on and off the source of the existing multi-source focusing radiotherapy head can only turn on or off all radioactive sources at the same time, but can not control to turn on or off part of the radioactive sources, and can not realize the precise adjustment of the radiation intensity, thereby affecting the dose control precision and the treatment effect of radiotherapy.
Disclosure of Invention
In view of the above, the invention provides a multi-source focusing radiotherapy head and a treatment device, which solve the technical problem that the existing multi-source focusing radiotherapy head cannot realize accurate adjustment of radiation intensity because the opening or closing of part of radioactive sources cannot be controlled, and further influences the dose control precision and treatment effect of radiotherapy.
According to an embodiment of the present invention, a multi-source focusing radiotherapy head is provided, which includes a source body and a collimating body, wherein a plurality of source loading cavities for accommodating radioactive sources and a plurality of corresponding radiation outlets are distributed on the source body, a plurality of collimating holes are distributed on the collimating body corresponding to the plurality of radiation outlets, a plurality of beams emitted from the plurality of radioactive sources are converged to a focus point through the plurality of collimating holes, and the multi-source focusing radiotherapy head further includes at least one switch body, the at least one switch body is located on a side of the collimating body close to or far away from the focus point, and the at least one switch body can move to block/emit a part of the beams in the plurality of beams.
Preferably, the source body and the collimating body move synchronously, and the switch body can move synchronously or asynchronously relative to the source body and the collimating body.
Preferably, the switch body includes at least a first switch member and a second switch member, and the first switch member and the second switch member can be moved toward or away from each other to block/emit the beam.
Preferably, the switch body comprises an aperture region comprising a radiation passing aperture for aligning with the collimating aperture to emit the beam and a non-aperture region for blocking the beam.
According to another embodiment of the present invention, a multi-source focusing radiotherapy head is provided, which includes a source body and a collimating body, wherein the source body includes a plurality of source-carrying cavity groups, a plurality of collimating hole groups are distributed on the collimating body corresponding to the plurality of source-carrying cavity groups, the source-carrying cavity groups include a plurality of source-carrying cavities for accommodating radioactive sources and a plurality of corresponding ray outlets, the collimating hole groups include a plurality of collimating holes, a plurality of beam groups emitted from the plurality of source-carrying cavity groups converge to a focus point via the corresponding collimating hole groups, and at least one switch body is located at a side of the collimating body close to or far from the focus point, and the at least one switch body is movable to block/emit a partial beam group or a partial beam in the plurality of beam groups.
Preferably, the source body and the collimating body move synchronously, and the switch body can move synchronously or asynchronously with respect to the source body and the collimating body.
Preferably, the switch body at least comprises a first switch component and a second switch component, and the first switch component and the second switch component can be closed or separated from each other to block/emit the beam group.
Preferably, the switch body includes an aperture region and a non-aperture region, the aperture region includes a set of adjustment holes, the set of adjustment holes includes at least one beam passing hole for aligning with at least one collimating hole in the set of collimating holes to emit at least one beam, and the non-aperture region is for blocking the beam.
Preferably, the switch body includes an aperture region and a non-aperture region, the aperture region includes a plurality of adjustment hole sets, each adjustment hole set includes at least one radiation passing hole for aligning with at least one collimation hole in the collimation group, the plurality of adjustment hole sets include different numbers of radiation passing holes for emitting different numbers of beams, and the non-aperture region is used for blocking the beams.
According to yet another embodiment of the present invention, there is provided a multi-source focused radiation therapy apparatus including the multi-source focused radiation therapy head described above.
The multi-source focusing radiotherapy head and the treatment equipment provided by the invention comprise a source body, a collimating body and at least one switch body, wherein the switch body is arranged on one side of the collimating body close to or far away from a focus, and partial beams in a plurality of beams emitted by the source body are blocked/emitted by controlling the movement of the switch body, so that the local opening and closing of the source of the radiotherapy head are conveniently and quickly realized, the purposes of accurately adjusting the radiation intensity, improving the dose control precision and further obtaining a better treatment effect are achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view of a multi-source focused radiation treatment head in accordance with an embodiment of the present invention.
FIG. 2 is a schematic view of a multi-source focused radiation treatment head according to another embodiment of the present invention.
FIG. 3 is a schematic diagram of an embodiment of a switch on source in a multi-source focused radiation treatment head.
FIG. 4 is a schematic view of a switch in a multi-source focused radiation treatment head according to an embodiment of the present invention.
FIG. 5 is a schematic diagram of a switch in a multi-source focused radiation treatment head according to yet another embodiment of the invention.
FIG. 6 is a schematic diagram of a source carrier chamber set of a source body in a multi-source focused radiation treatment head according to yet another embodiment of the invention.
FIG. 7 is a schematic diagram of a switch in a multi-source focused radiation treatment head, in accordance with an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be further described in more detail with reference to the accompanying drawings and the detailed description. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
FIG. 1 is a schematic structural diagram of a multi-source focused radiation treatment head according to an embodiment of the present invention. As shown, the multi-source focused radiation treatment head includes a shield (not shown), a source body 2, a collimating body 3, and a switch body 6.
The shielding body is arranged on the outer side of the source body 2 and is made of lead or tungsten and used for shielding radiation of the radioactive source 4 in the source body 2 to the outside.
The source body 2 is a hollow hemisphere, and the outer surface of the source body is matched with the inner surface of the shielding body. The source body 2 is provided with a plurality of source carrying cavities for accommodating the radioactive sources 4, and is correspondingly provided with a plurality of ray outlets for emitting radioactive beams of the radioactive sources 4, and the source body 2 can rotate around a focus 5.
The collimation body 3 is a hollow hemisphere, the outer surface of the collimation body is matched with the inner surface of the source body 2, a plurality of collimation holes 32 are distributed on the collimation body 3 corresponding to the ray outlets, and the collimation body 3 can rotate around the focus 5.
During treatment, the source body 2 and the collimating body 3 rotate synchronously, and rays emitted by the radioactive source 4 accommodated in the source carrying cavity of the source body 2 are converged to the focus 5 through the collimating hole 32 of the collimating body 3, so that the affected part of a patient positioned in a treatment area is treated.
The switch body 6 is arranged on one side of the collimating body 3 far away from the focus 5, the inner surface of the switch body is matched with the outer surface of the collimating body 3, the outer surface of the switch body is matched with the inner surface of the source body 2, and the switch body 6 can move between the source body 2 and the collimating body 3 to block/emit part of a plurality of beams emitted from the source body 2, so that a local switch source of the treatment head is realized.
The number of the switch bodies 6 is not limited in the present invention, and may be one or more. When a plurality of switch bodies 6 are provided, the plurality of switch bodies may be distributed circumferentially around the focal point 5, or may be distributed in a radial direction of a sphere having the focal point 5 as a center of sphere, and the specific arrangement of the plurality of switch bodies 6 is not limited in the present invention. The movement of the switch body is not limited, either, as long as it is ensured that the switch body is able to block/eject some but not all of the plurality of beams emanating from the source body 2, and can be rotated about the focal point 6 and/or moved in the height direction of the collimating body 3.
Specifically, the present embodiment is described by taking an example in which one of the switch bodies 6 is included and the switch body is rotatable around the focal point 5. When the switch body 6 rotates to a certain ray outlet of the source body 2, the ray outlet is blocked by the switch body 6, so that the beam passing through the ray outlet cannot be emitted, the source of the radioactive source corresponding to the ray outlet is switched off, and other ray sources which are not blocked by the switch body 6 are in an on-source emitting state; when the switch body 6 rotates to the position staggered with the ray outlet, the ray outlet is opened, rays can be emitted, and the source opening of a radioactive source corresponding to the ray outlet is realized; thereby realizing the local switch source of the treatment head.
In some embodiments, the switch body 6 may also be disposed on a side of the collimating body 3 close to the focal point 5, and the switch body 6 may rotate around the focal point 5.
Specifically, referring to fig. 2, when the switch body 6 rotates to the outlet of one of the collimating holes 32 of the collimating body 3, the outlet of the collimating hole is blocked by the switch body 6, so that the beam passing through the collimating hole cannot be emitted, thereby implementing the turning off of the radiation source corresponding to the collimating hole, and the other radiation sources not blocked by the switch body 6 are in the on-state; when the switch body 6 rotates to the position staggered with the collimating hole outlet, the collimating hole outlet is opened, rays can be emitted, and the opening of the radioactive source corresponding to the collimating hole is realized; thereby realizing the local switch source of the treatment head.
In the treatment process, the switch body 6 can synchronously rotate relative to the source body 2 and the collimating body 3, so that the continuous source switching of the same radiation source is ensured; at the same time, the switch body 6 can also move asynchronously with respect to the source body 2 and the collimating body 3, for example, when a certain area in the treatment area does not need the radiation treatment, the switch body 6 is moved to the area and then kept still, so that the radiation source moving to the area emits a beam which is blocked by the switch body 6 during the treatment process, and the source of the radiation source moving to the area is switched off.
Referring to fig. 3 and 4, in some embodiments of the present invention, the switch body 6 includes a first switch member 61 and a second switch member 62, and the first switch member 61 and the second switch member 62 may be closed to each other to form the switch body 6 or separated to form one channel 7.
Specifically, when the first switch member 61 and the second switch member 62 are closed to form the switch body 6 and the switch body 6 is rotated to a certain radiation exit (or a certain collimation hole exit) of the source body 2, the switch body 6 can block the beam emitted from the radiation exit (or collimation hole exit), so as to realize the turning-off of the radiation source corresponding to the radiation exit (or collimation hole exit), and the radiation sources corresponding to the other radiation exits (or collimation hole exits) which are not blocked by the switch body 6 are in the on-source state; when the first switch member 61 and the second switch member 62 are separated from each other to form a passage 7, and the switch body 6 is rotated until the passage 7 is opposite to the radiation outlet (or the collimation hole outlet), the beam emitted from the radiation outlet (or the collimation hole outlet) can pass through the passage 7 and be focused to the focal point 5, so as to realize the open source of the radiation source corresponding to the radiation outlet (or the collimation hole outlet). By controlling the closing, separating and rotating of the switch body 6, the local radioactive source of the treatment head is conveniently and quickly opened and closed, and the purposes of accurately adjusting the radiation intensity, improving the dose control precision and further obtaining better treatment effect are achieved.
Referring to fig. 5, in another embodiment of the present invention, the switch body 6 includes an aperture region 63 and a non-aperture region 64. The aperture area 63 is provided with a radiation passing hole, when the switch body 6 is rotated until the non-aperture area 64 is aligned with a certain radiation exit (or collimation hole exit), the non-aperture area 64 blocks the beam emitted from the radiation exit (or collimation hole exit), so that the source of the radiation source corresponding to the radiation exit (or collimation hole exit) is switched off, and the radiation sources corresponding to the other radiation exits (or collimation hole exits) which are not blocked by the switch body 6 are in an on-source state; when the radiation passing hole of the switch body 6 to the aperture area 63 is aligned with the radiation exit (or collimation hole exit), the beam emitted from the radiation exit (or collimation hole exit) can pass through the radiation passing hole of the aperture area 63 and be focused to the focal point 5, and the on-source of the radiation source corresponding to the radiation exit (or collimation hole exit) is realized, it can be understood that when the switch body 6 is rotated to the switch body 6 and is staggered with the radiation exit (or collimation hole exit), the beam emitted from the radiation exit (or collimation hole exit) can be directly emitted and be focused to the focal point 5, and the on-source of the radiation source corresponding to the radiation exit (or collimation hole exit) can also be realized. By controlling the aperture area 63 or the non-aperture area 64 of the switch body 6 to align with the ray outlet (or the collimation hole outlet), the local radioactive source of the treatment head can be conveniently and rapidly switched on and off, and the purposes of accurately adjusting the radiation intensity, improving the dose control precision and further obtaining better treatment effect are achieved.
In a further embodiment of the invention, there is also provided a multi-source focused radiation treatment head comprising a shielding, a source body 2, a collimating body 3 and at least one switch body 6. The shielding body is arranged on the outer side surface of the source body 2 and used for shielding the radiation of the radiation source 4 in the source body 2 to the outside. The source body 2 is a hollow hemisphere, and the outer surface of the source body is matched with the inner surface of the shielding body. Referring to fig. 6, the source body 2 is provided with six source carrying cavity groups 21 for accommodating the radiation source 4, each source carrying cavity group 21 includes five source carrying cavities, and a radiation outlet for emitting a radiation beam is arranged corresponding to each source carrying cavity. Six collimation hole groups are distributed on the collimation body 3 corresponding to the source carrying cavity group 21, and six beam groups emitted by the radioactive sources of the six source carrying cavity groups 21 penetrate through the six collimation hole groups to be converged to the focus 5.
In the present embodiment, the switch body 6 is disposed on a side of the collimating body 3 away from the focal point 5, and the switch body 6 can rotate around the focal point 5 along the collimating body 3. When the switch body 6 rotates to the ray outlet of one of the source carrying cavity groups 21, the switch body 6 can block five beams emitted by the source carrying cavity group, so that the source closing of five radioactive sources corresponding to the source carrying cavity group is realized; when the switch body 6 rotates to the ray outlet staggered with the source carrying cavity group, all five beams of the source carrying cavity group can be emitted and focused to the focus 5, and the source opening of five radioactive sources corresponding to the source carrying cavity group is realized. The source opening and closing of the radioactive source corresponding to the partial source carrying cavity group in the plurality of source carrying cavity groups 21 is conveniently and quickly realized by rotating the switch body 6 to stagger or align the ray outlet position of a certain source carrying cavity group of the plurality of source carrying cavity groups 21.
In some embodiments, the switch body 6 is disposed on a side of the collimating body 3 close to the focal point 5, and the switch body 6 can rotate around the focal point 5 along an inner side of the collimating body 3. When the switch body 6 rotates to the outlet of one of the plurality of collimation hole groups of the collimation body 3, the switch body 6 blocks five beams passing through the collimation hole group, and the source closing of five radioactive sources corresponding to the collimation hole group is realized; when the switch body 6 rotates to the outlet staggered with the collimation hole group, all five beams passing through the collimation hole group are emitted and focused to the focus 5, and the source opening of five radioactive sources corresponding to the collimation hole group is realized. The opening and closing of the radioactive sources corresponding to part of the source carrying cavity groups 21 in the plurality of source carrying cavity groups are conveniently and quickly realized by rotating the switch body 6 to stagger or align the outlet position of one of the plurality of collimation hole groups.
In the treatment process, the switch body 6 can synchronously rotate relative to the source body 2 and the collimating body 3, so that the continuous source switching of the ray sources corresponding to the same carrier source cavity group is ensured; meanwhile, the switch body 6 can also move asynchronously relative to the source body 2 and the collimating body 3, for example, when a certain area in the treatment area does not need the radiation irradiation treatment, the switch body 6 is moved to the area and then kept still, so that the beams emitted by the radiation sources corresponding to the source carrying cavity group moving to the area are blocked by the switch body 6 during the treatment process, and the source switching of the radiation sources moving to the area is realized.
In some embodiments of the present invention, the switch body 6 includes at least a first switch component 61 and a second switch component 62, and the first switch component 61 and the second switch component 62 can be closed together to form the switch body 6 or separated to form a channel 7.
When the first switch member 61 and the second switch member 62 are closed to form the switch body 6 and the switch body 6 is rotated to a ray outlet (or an outlet of a collimation hole group) of a certain source carrying cavity group 21, the switch body 6 blocks a beam emitted from the ray outlet (or the outlet of the collimation hole group) of the source carrying cavity group, so as to realize the source closing of a radioactive source corresponding to the source carrying cavity group (or the collimation hole group); when the first switch member 61 and the second switch member 62 are separated from each other to form a channel 7 and the channel 7 is rotated to face the radiation outlet (or the outlet of the collimation hole group) of the source carrying cavity group, the beam emitted from the radiation outlet (or the outlet of the collimation hole group) of the source carrying cavity group can pass through the channel 7 and be focused to the focal point 5, so that the open source of the radiation source corresponding to the source carrying cavity group (or the collimation hole group) is realized. By controlling the closing, opening and closing and rotation of the switch body 6, the opening and closing of the radioactive sources corresponding to part of the source carrying cavity groups 21 in the plurality of source carrying cavity groups can be conveniently and quickly realized.
In some embodiments, the switch body 6 comprises an aperture region 63 and a non-aperture region 64, the aperture region 63 being provided with a set of adjustment holes comprising at least one beam passing hole for aligning with at least one collimating hole of the set of collimating holes for emitting at least one beam. By adopting the switch body, the whole source opening and closing of the radioactive sources corresponding to part of the source carrying cavity groups 21 in the plurality of source carrying cavity groups 21 of the treatment head can be realized, and the source opening and closing of part of the radioactive sources in a certain source carrying cavity group 21 can also be realized.
Taking the example that the adjusting hole group has two radiation passing holes, when the switch body 6 is rotated until two radiation passing holes of the adjusting hole group are aligned with two collimating hole outlets (or two radiation outlets) of one collimating hole group, two beams of the beam group emitted by the corresponding source carrying cavity group 21 and passing through the two collimating hole outlets (or the two radiation outlets) can pass through the two radiation passing holes of the adjusting hole group and be focused to the focal point 5, and the remaining three beams of the beam group emitted by the source carrying cavity group 21 and not aligned with the radiation passing holes are blocked by a non-aperture region, so as to realize the source-off of the radiation sources corresponding to the remaining three beams of the source carrying cavity group 21; when the switch body 6 is rotated to be staggered with the collimation hole group (or the source carrying cavity group), the other three beams in the source carrying cavity group 21 are emitted and converged to the focus 5, so that the other three beams in the source carrying cavity group 21 are switched on; therefore, the on-off of a partial ray source in a certain source carrying cavity group 21 of the treatment head is realized.
When the switch body 6 is rotated to align the non-aperture area 64 with the collimation hole group (or the source carrying cavity group), the beam emitted by all the radioactive sources in the source carrying cavity group 21 is blocked by the switch body 6, and all the radioactive sources in the source carrying cavity group 21 are switched off; when the switch body 6 is rotated to be staggered with the collimation hole group (or the source carrying cavity group), beams emitted by all radioactive sources in the source carrying cavity group 21 are emitted, and all radioactive sources in the source carrying cavity group 21 are turned on; therefore, the whole source opening and closing of the radioactive sources corresponding to part of the source carrying cavity groups 21 in the treatment head are realized.
The number of the ray through holes contained in the adjusting hole group is equal to the number of the source carrying cavities contained in the source carrying cavity group 21, so that the whole source opening and closing of the radioactive sources corresponding to part of the source carrying cavities in the source carrying cavity groups 21 of the treatment head can be realized.
In some embodiments, the switch body 6 comprises an aperture region 63 and a non-aperture region 64, the aperture region 63 comprising a plurality of adjustment hole sets, each adjustment hole set comprising at least one passage aperture for aligning with at least one collimation aperture of the collimation hole set, the plurality of adjustment hole sets comprising a different number of passage apertures for emitting a different number of beams. By adopting the switch body, the quick switching of the switches of the radioactive sources with different numbers in the source carrying cavity group 21 can be realized.
Illustratively, referring to fig. 7, the aperture area 63 includes three sets of adjustment apertures: first set of adjustment holes 631 includes one radiation passing hole, second set of adjustment holes 632 includes two radiation passing holes, and third set of adjustment holes 633 includes three radiation passing holes. When the switch body 6 is rotated to align the radiation passing hole in the first adjusting hole group 631 with one collimating hole outlet in the collimating hole group (or one radiation outlet in the source carrying cavity group 21), one of the beams emitted by the source carrying cavity group 21, which corresponds to the radiation passing hole of the first adjusting hole group 631, can be emitted and focused on the focal point 5, so that the source opening of one radiation source in the source carrying cavity group 21 is realized, and the other radiation sources in the source carrying cavity group 21 are turned off;
when the number of the open sources of the radioactive sources needs to be changed to 3, the switch body 6 can be rotated to align the three radiation passing holes in the third adjusting hole group 633 with the three collimating hole outlets in the collimating hole group (or the three radiation outlets in the source carrying cavity group 21), so that three beams corresponding to the three radiation passing holes of the third adjusting hole group 633 in the beam group emitted by the source carrying cavity group 21 can be emitted and focused on the focal point 5, thereby realizing the open sources of the three radioactive sources in the source carrying cavity group 21 and the close sources of the other radioactive sources in the source carrying cavity group 21;
when the number of the radioactive sources to be switched is 2, the switch body 6 may be rotated to align the two radiation passing holes in the second adjusting hole set 632 with the two collimating hole outlets in the collimating hole set (or the two radiation outlets in the source carrying cavity set 21), so as to implement the fast switching of the switches for different numbers of radioactive sources in the source carrying cavity set 21 of the treatment head.
In another embodiment of the present invention, a multi-source focusing radiotherapy apparatus is further provided, which includes the multi-source focusing radiotherapy head described in the above embodiments, and controls the switch body to move to block/emit part of the beams emitted by the source body, so as to conveniently and quickly switch on/off the radiation source corresponding to the beams or beam groups of the head part, improve the precision of radiation intensity adjustment, and improve the dose control precision and treatment effect of radiotherapy by the multi-source focusing radiotherapy apparatus.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A multi-source focusing radiotherapy head comprises a source body and a collimating body, wherein a plurality of source carrying cavities for accommodating radioactive sources and a plurality of corresponding ray outlets are distributed on the source body, a plurality of collimating holes are distributed on the collimating body corresponding to the ray outlets, and a plurality of beams emitted by a plurality of radioactive sources are converged to a focus position through the collimating holes.
2. The multi-source focused radiation treatment head of claim 1, wherein the source body and the collimating body move synchronously, and the switch body can move synchronously or asynchronously with respect to the source body and the collimating body.
3. The multi-source focused radiation treatment head according to claim 1 or 2, wherein the switch body comprises an aperture region comprising a radiation passing hole for aligning with the collimation hole for emitting the beam and a non-aperture region for blocking the beam.
4. A multi-source focusing radiotherapy head comprises a source body and a collimating body, wherein the source body comprises a plurality of source carrying cavity groups, a plurality of collimating hole groups are distributed on the collimating body corresponding to the source carrying cavity groups, each source carrying cavity group comprises a plurality of source carrying cavities for accommodating radioactive sources and a plurality of corresponding ray outlets, each collimating hole group comprises a plurality of collimating holes, a plurality of beam groups emitted by the corresponding source carrying cavity groups are converged to a focus through the corresponding collimating hole groups, the multi-source focusing radiotherapy head is characterized by further comprising at least one switch body, the at least one switch body is positioned on one side of the collimating body close to or far away from the focus, the at least one switch body can move to block/emit partial beam groups or partial beams in the plurality of beam groups, the switch body at least comprises a first switch part and a second switch part, and the first switch part and the second switch part can be mutually closed or separated, to block/eject the set of beams.
5. The multi-source focused radiation treatment head of claim 4, wherein the source body and the collimating body move synchronously, and the switch body can move synchronously or asynchronously with respect to the source body and the collimating body.
6. The multi-source focused radiation treatment head according to claim 4 or 5, wherein the switch body comprises an aperture region and a non-aperture region, the aperture region comprising a set of adjustment holes, the set of adjustment holes comprising at least one beam passing hole for aligning with at least one collimation hole of the set of collimation holes for emitting at least one beam, the non-aperture region for blocking the beam.
7. The multi-source focused radiation treatment head according to claim 4 or 5, wherein the switch body comprises an aperture region and a non-aperture region, the aperture region comprises a plurality of adjustment hole sets, each adjustment hole set comprises at least one radiation passing hole for aligning with at least one collimation hole in the collimation hole set, the plurality of adjustment hole sets comprise different numbers of radiation passing holes for emitting different numbers of beams, and the non-aperture region is used for blocking the beams.
8. A multi-source focused radiation therapy apparatus comprising a multi-source focused radiation therapy head according to any of claims 1 to 7.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2017/079309 WO2018176473A1 (en) | 2017-04-01 | 2017-04-01 | Multi-source focused radiation treatment head and treatment device |
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| CN209984816U true CN209984816U (en) | 2020-01-24 |
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| CN201790000416.0U Active CN209984816U (en) | 2017-04-01 | 2017-04-01 | Multi-source focusing radiotherapy head and treatment equipment |
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| CN114177542A (en) * | 2020-09-15 | 2022-03-15 | 西安大医集团股份有限公司 | Dose control method, device, controller and system in radiotherapy |
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| JP2012024339A (en) * | 2010-07-23 | 2012-02-09 | Fujifilm Corp | Radiation imaging system and collimator unit |
| JP6308714B2 (en) * | 2012-08-28 | 2018-04-11 | キヤノン株式会社 | Radiation generating tube and radiation generating apparatus provided with the radiation generating tube |
| CN103385732A (en) * | 2013-07-25 | 2013-11-13 | 中国科学院苏州生物医学工程技术研究所 | Static CT (Computed Tomography) scanner |
| CN203647890U (en) * | 2013-12-25 | 2014-06-18 | 深圳市奥沃医学新技术发展有限公司 | A local switch source apparatus used for a multi-source radiotherapy device |
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| CN114177542A (en) * | 2020-09-15 | 2022-03-15 | 西安大医集团股份有限公司 | Dose control method, device, controller and system in radiotherapy |
| US11918829B2 (en) | 2020-09-15 | 2024-03-05 | Our United Corporation | Method, controller and system for controlling dose in radiotherapy |
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