WO2017177405A1 - 一种可调准直器、治疗头及放射治疗设备 - Google Patents

一种可调准直器、治疗头及放射治疗设备 Download PDF

Info

Publication number
WO2017177405A1
WO2017177405A1 PCT/CN2016/079213 CN2016079213W WO2017177405A1 WO 2017177405 A1 WO2017177405 A1 WO 2017177405A1 CN 2016079213 W CN2016079213 W CN 2016079213W WO 2017177405 A1 WO2017177405 A1 WO 2017177405A1
Authority
WO
WIPO (PCT)
Prior art keywords
collimating
holes
hole
different
collimating hole
Prior art date
Application number
PCT/CN2016/079213
Other languages
English (en)
French (fr)
Inventor
刘海峰
Original Assignee
深圳市奥沃医学新技术发展有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市奥沃医学新技术发展有限公司 filed Critical 深圳市奥沃医学新技术发展有限公司
Priority to PCT/CN2016/079213 priority Critical patent/WO2017177405A1/zh
Priority to CN201680002220.5A priority patent/CN106794361B/zh
Publication of WO2017177405A1 publication Critical patent/WO2017177405A1/zh

Links

Images

Classifications

    • 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
    • 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
    • A61N5/1042—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy with spatial modulation of the radiation beam within the treatment head
    • 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
    • A61N5/1077—Beam delivery systems
    • A61N5/1081—Rotating beam systems with a specific mechanical construction, e.g. gantries
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators

Definitions

  • the invention relates to the technical field of medical instruments, in particular to an adjustable collimator, a treatment head and a radiotherapy apparatus.
  • Radiation therapy is to emit radiation through a radiation source, and the radiation is focused on the same focus, so that the focus corresponds to the position of the human tumor or other lesions, and the tumor is killed by radiation, thereby achieving a treatment method for non-invasive treatment.
  • the prior art radiotherapy apparatus 100 includes a rotating gantry (not shown) and a treatment head 10 that is mounted on a rotating gantry and that is circumferentially rotatable on a rotating gantry.
  • the treatment head 10 includes a radiation source 1 and a collimator 2
  • the treatment head 10 includes four radiation sources 1 as an example, and the collimator 2 is formed.
  • FIG. 3 it is a schematic diagram of the head treatment.
  • the human body is located on the treatment bed, and the treatment head rotates around the circumference of the human body, so that the focus point corresponds to the tumor of the human body.
  • the rotation of the treatment head to form a circular space as shown in FIG. 1 is called a treatment space, and the size of the treatment space depends on the distance from the aggregation point to the treatment head.
  • the distance from the focus point to the source is small during head radiotherapy, resulting in a head
  • the treatment space of the radiotherapy equipment is small, and only the head radiotherapy equipment can not be used for body tumor radiotherapy.
  • the body tumor radiotherapy requires the treatment space of the radiotherapy equipment to be large enough, the distance from the focus point to the treatment head is large, and the diameter of the collimation hole is large, while the head tumor tends to be small, and the treatment requires a small aperture.
  • the collimation hole if the small-aperture collimation hole of the head radiotherapy device is used on the body tumor radiotherapy equipment, the radiation output dose rate is greatly reduced, and thus the head tumor treatment requirement cannot be met, so the existing body Tumor radiotherapy equipment cannot be used for radiation therapy of head tumors. That is, existing tumor radiotherapy equipment cannot be used for both head treatment and body treatment.
  • Embodiments of the present invention provide an adjustable collimator, a treatment head, and a radiotherapy apparatus, the adjustable collimator being usable for a treatment head capable of adjusting a distance from a focus point to a treatment head, including
  • the treatment head of the adjustable collimator can be used for head radiation therapy and body radiation therapy.
  • an embodiment of the present invention provides an adjustable collimator, including a first body, and at least two sets of collimating holes disposed on the first body, wherein each of the collimating holes The group includes at least two first collimating holes, the first collimating holes penetrating through opposite sides of the first body;
  • the center line of each of the first collimating holes of the same collimating hole group is concentrated at the same focusing point on one side of the main body, and the center lines of the first collimating holes of the collimating hole group are concentrated. Different focus points on one side of the body, and different distances from different focus points to the body are different.
  • each of the first collimating holes belonging to the same collimating hole group is located in the same row, and each of the first collimating holes belonging to different collimating hole groups is located in a different row.
  • each of the first collimating holes belonging to the same collimating hole group has the same aperture size, and the first collimating holes of the different collimating hole groups have different aperture sizes.
  • the greater the distance from the focus point to the body the larger the aperture of each of the first collimation holes of the collimating hole group corresponding to the focus point.
  • each of the collimating hole groups includes an even number of first collimating holes, and the even number of first collimating holes are divided into a first collimating hole subgroup and a second collimating hole subgroup, wherein The first collimating hole subgroup and the second collimating hole subgroup are symmetric; or
  • Each of the collimating hole groups includes an odd number of first collimating holes, and the odd number of first collimating holes are symmetrical about a center line of the first one of the first collimating holes.
  • each of the collimating hole groups includes at least two collimating hole groups, and each of the first collimating holes belonging to the same collimating hole group has the same aperture size, and each of the collimating hole groups is different.
  • the first collimating holes have different aperture sizes.
  • each of the first collimating holes belonging to the same collimating hole team is located in the same row, and belongs to The first collimating holes of the different collimating holes are located in different rows.
  • the embodiment of the present invention provides a treatment head comprising a plurality of radiation sources and the adjustable collimator according to any one of the embodiments of the present invention, wherein the radiation emitted by the radiation source is wearable
  • the first collimating aperture through the adjustable collimator converges at a focus point.
  • the pre-collimator includes a second body and a plurality of second collimating holes disposed on the second body, wherein the second collimating holes extend through opposite sides of the second body, wherein The aperture of the second collimating hole is larger than the aperture of the first collimating hole;
  • Radiation from the radiation source may converge through the second collimation aperture and the first collimation aperture at a focus point.
  • an embodiment of the present invention provides a radiotherapy apparatus comprising the treatment head according to any one of the embodiments of the present invention.
  • a rotating frame is further included, the treatment head is fixed on the rotating frame, and is rotatable in a lower circumference of the rotating frame, and the treatment head is movable in a radial direction of the rotating circumference.
  • Embodiments of the present invention provide an adjustable collimator, a treatment head, and a radiation therapy apparatus applicable to a treatment head, the adjustable collimator including a first body, and at least two disposed on the first body a collimating hole group, wherein each of the collimating hole groups includes at least two first collimating holes, the first collimating holes penetrating through opposite sides of the first body; wherein the same one is
  • the center lines of the first collimating holes of the straight hole group are concentrated at the same focus point on one side of the body, and the center lines of the first collimating holes of the collimating hole group are different on the main body side.
  • the focus point, and the different focus points are different from the distance of the body.
  • the treatment space is proportional to the distance from the focus point to the treatment head including the adjustable collimator, and the adjustable collimator provided by the embodiment of the present invention
  • the distance between the focus point and the treatment head can be adjusted by adjusting different collimation hole groups, and the treatment space and the dose rate can be adjusted, so that it can be used for head treatment and body treatment according to the treatment needs.
  • Figure 1 is a schematic view of a conventional radiotherapy apparatus
  • Figure 2 is a cross-sectional view of a conventional treatment head
  • FIG. 3 is a schematic view of a head treatment of a conventional radiotherapy apparatus
  • FIG. 4 is a schematic diagram of an adjustable collimator according to an embodiment of the present invention.
  • Figure 5 is a schematic cross-sectional view of the adjustable collimator of Figure 4.
  • Figure 6 is another schematic cross-sectional view of the adjustable collimator of Figure 4.
  • FIG. 7 is a schematic cross-sectional view of another adjustable collimator according to an embodiment of the present invention.
  • FIG. 8 is a schematic cross-sectional view of another adjustable collimator according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of another adjustable collimator according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of different collimated hole teams of the same collimating hole group according to an embodiment of the present invention.
  • Figure 11 is a schematic view of a treatment head according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of another treatment head according to an embodiment of the present invention.
  • Figure 13 is a schematic view showing the radial movement of the treatment head along the circumference of rotation
  • Fig. 14 is a schematic view showing the focus point maintained by moving the treatment head after the collimation hole of the selected focus point is selected.
  • An embodiment of the present invention provides an adjustable collimator 20, as shown in FIG. 4, including a first body 21, and at least two sets of collimating holes disposed on the first body 21, first in FIG. For example, three collimating hole groups are formed on the body 21, and the first collimating hole group 22, the second collimating hole group 23, and the third collimating hole group 24 are exemplified.
  • Each of the collimating hole groups includes at least two first collimating holes, and the first collimating holes penetrate the opposite sides of the first body.
  • the first collimating hole group 22, the second collimating hole group 23, and the third collimating hole group 24 respectively include four first collimating holes 211 as an example.
  • the center lines of the first collimating holes of the same collimating hole group converge at the same focusing point on one side of the body, and the center lines of the first collimating holes of the different collimating hole groups converge on different focus points on one side of the main body And the distance from different focus points to the body is different.
  • the center lines of the first collimating holes of the first collimating hole group 22 converge at the focus point a, and the center lines of the first collimating holes of the second collimating hole group 23 converge.
  • the center lines of the first collimating holes of the third collimating hole group 24 converge at the focus point c, wherein the distance from the focus point a to the first body 21 is d1, and the focus point b is to the first body.
  • the distance of 21 is d2, and the distance from the focus point c to the first body 21 is d3, and d1>d2>d3.
  • the adjustable collimator provided by the embodiment of the invention is applied to the treatment head, and the radiation emitted by the radiation source is concentrated at the focus point through the first collimation holes of the different collimation hole groups. Since the dose rate of the radiation is inversely proportional to the square of the distance from the focus point to the source, the treatment space is proportional to the distance from the focus point to the treatment head. Specifically, in the case where the radiation source is unchanged in the treatment head, the greater the distance from the focus point to the body, the smaller the dose rate of the radiation at the focus point, and the treatment space formed by the treatment head including the adjustable collimator The larger it is, the more it can be used for body treatment. Conversely, the smaller the distance from the focus point to the body, the higher the dose rate of the radiation at the focus point, and the smaller the treatment space formed by the treatment head including the adjustable collimator, and thus can be used for head treatment.
  • the focus point a of the first collimation hole group 22, the focus point b of the second collimation hole group 23, and the focus point c of the third collimation hole group 24 are located.
  • the specific positions of the focus points of the different collimated hole groups are not specifically limited.
  • the focus point a of the first collimation hole group 22 may be located on the center line of the first body 21
  • the focus point b of the second collimation hole group 23 may be located on the first body 21 .
  • the focus point c of the third collimating hole group 24 may be the other side of the center line of the first body 21.
  • the first body may be a rectangular parallelepiped as shown in FIG. 4, and may also be a ring or the like.
  • the shape of the first body is not specifically limited in the embodiment of the present invention.
  • the distance from the focus point to the body is the distance from the focus point to the reference plane with any plane on the first body as the reference plane.
  • the two sides of the first body 21 through which the collimating holes pass are all curved surfaces, and the distance from the focus point a of the first collimating hole group 22 to the first local 21 is first.
  • the cut surface of the surface of the body 21 near the focus point a is a reference surface, and the distance from the focus point a to the first body 21 is d1, that is, the distance from the focus point a to the reference surface.
  • the embodiment of the present invention provides an adjustable collimator, which can be applied to a treatment head, the adjustable collimator includes a first body, and at least two sets of collimating holes disposed on the first body, wherein Each of the collimating hole groups includes at least two first collimating holes, the first collimating holes penetrating through opposite sides of the first body; wherein a center line of each of the first collimating holes of the same collimating hole group is concentrated The same focal point on one side of the body, the center lines of the first collimating holes of the different collimating hole groups converge at different focusing points on one side of the body, and the distances of different focusing points from the body are different.
  • the treatment space is proportional to the distance from the focus point to the treatment head including the adjustable collimator, and the adjustable collimator provided by the embodiment of the present invention
  • the distance between the focus point and the treatment head can be adjusted by adjusting different collimation hole groups, and the treatment space and the dose rate can be adjusted, so that it can be used for head treatment and body treatment according to the treatment needs.
  • the radioactive source can be aligned with the first collimation hole group 22,
  • the focus point is a, and since the distance from the focus point a to the first body 21 is large, the requirement for a large treatment space for body tumor treatment can be satisfied.
  • the treatment device including the adjustable collimator shown in FIG. 4 is used for head tumor radiotherapy, the source is aligned with the third collimation hole group 24, and the focus point is c, since the focus point c is to the first body.
  • the distance of 21 is small, and the dose rate of the radiation is high, so that the high dose rate of the head tumor treatment can be met.
  • each of the first collimating holes belonging to the same collimating hole group is located in the same row and belongs to The first collimating holes of the different collimating hole groups are located in different rows. As shown in FIG. 4, each of the first collimating holes belonging to the first collimating hole group 22 is located in the same row, and each of the first collimating holes belonging to the second collimating hole group 23 is located in the same row and belongs to the third collimating hole. Each of the first collimating holes of the group 24 is located in the same row in the same row, and the first collimating hole group 22, the second collimating hole group 23, and the third collimating hole group 24 are respectively located in different rows.
  • first collimating holes belonging to the different collimating hole groups may also be located in the same row.
  • the specific position of the embodiment of the present invention is not limited.
  • first collimating holes of the same collimating hole group have the same aperture size
  • first collimating holes of the different collimating hole groups have different aperture sizes
  • the aperture of the collimation hole is required to be small, and when the tumor of the body tumor is irradiated, the aperture of the alignment hole is required to be lower.
  • the greater the distance between the focus point and the body the larger the aperture of each of the first collimation holes of the collimating hole group corresponding to the focus point, which can be used for body tumor treatment.
  • the smaller the distance between the focus point and the body the smaller the aperture of each of the first collimation holes of the collimating hole group corresponding to the focus point, and can be used for head tumor treatment.
  • each of the collimating hole groups includes an even number of first collimating holes, and the even number of first collimating holes are divided into a first collimating hole subgroup and a second collimating hole subgroup, wherein the first collimating hole subgroup and The second collimating hole subgroup is symmetrical, and the corresponding focusing point of each collimating hole group is located on the symmetry axis of the first collimating hole subgroup and the second collimating hole subgroup, which is more convenient for the positioning.
  • each of the collimating hole groups includes four collimating holes, and the four collimating hole groups are symmetrical with respect to the center line of the first body.
  • each of the collimating hole groups includes an odd number of first collimating holes, and the odd first collimating holes are symmetric about a center line of the first one of the first collimating holes, and the corresponding focusing point of each collimating hole group is located at the The symmetry axis of each of the first collimating holes in the collimating hole group is more convenient for the positioning.
  • the collimating hole group includes five first collimating holes, wherein two first collimating holes on both sides of the first first collimating hole are located with respect to the first collimating hole located in the middle The center line is symmetrical.
  • Each of the collimating hole groups includes at least two collimating hole groups, and the first collimating holes of the same collimating hole group have the same aperture, and the first collimating holes of the different collimating holes have different apertures.
  • the first body 21 is provided with two sets of collimating holes, which are a first collimating hole group 22 and a second collimating hole group 23, wherein the first collimating hole group 22 includes two
  • the collimating hole team is a first collimating hole team 221 and a second collimating hole team 222;
  • the second collimating hole group 23 includes two collimating hole groups, respectively a third collimating hole team 231 and a fourth Collimate hole team 232.
  • the focusing point a of the first collimating hole group 221 is to the first body 21
  • the distance is d1
  • the apertures of the first collimating holes of the first collimating hole group 221 are D1
  • the apertures of the first collimating holes of the second collimating hole group 222 are D2, D1>D2.
  • the first collimating hole group 22 includes a first collimating hole group 221 and a second collimating hole group 222, wherein each of the first collimating holes 221 has the same aperture size And in the same row, the first collimating holes of the second collimating hole group 222 have the same aperture size and are in the same row.
  • the second collimating hole group 23 includes a third collimating hole group 231 and a fourth collimating hole group 232, wherein each of the first collimating holes of the third collimating hole group 231 has the same aperture size and is located in the same row, Each of the first collimating holes of the four collimating holes 232 has the same aperture size and is located in the same row.
  • Embodiments of the present invention provide a treatment head including a plurality of radiation sources and any adjustable collimator provided by the embodiments of the present invention, wherein the radiation emitted by the radiation source can pass through the first standard of the adjustable collimator Straight holes converge at the focus point.
  • the adjustable collimator shown in FIG. 4 is taken as an example.
  • each of the radioactive sources 1 respectively corresponds to a first collimating hole 211
  • the adjustable collimator can be along the same as shown in FIG. 4 .
  • the 101 direction movement causes the radiation source 1 to correspond to different collimation hole groups, and each of the first collimation holes of the different collimation hole groups is emitted and concentrated at the focus point.
  • the source of radiation can also be passed through different sets of collimating holes to form focal points at different locations by rotating the ring.
  • first collimating holes belonging to different collimating hole groups are also in the same row, they can be moved along the arrangement direction of the first collimating holes of the row, so that the radioactive sources pass through different groups to form focusing at different positions. point.
  • the radiation source 1 is cylindrical, and the center line of the radiation source 1 It coincides with the center line of the first collimating hole 211. Therefore, the utilization rate of the radioactive source is high, which is favorable for increasing the radiation dose rate at the focus point.
  • the center lines of the first collimating holes of the different collimating hole groups are not parallel to each other, and further, in order to realize the center line of the radioactive source and the center of each of the first collimating holes in the different collimating hole groups The lines coincide, and the axis of the radiation source in the embodiment of the invention can be adjusted.
  • the treatment head further includes a pre-collimator 30 between the radiation source 1 and the adjustable collimator 21; wherein the pre-collimator 30 includes the second body 31 and is disposed at the a plurality of second collimating holes 311 on the second body 31, the second collimating holes 311 penetrating the opposite sides of the second body 31, wherein the second collimating holes 311 have a larger aperture than the first collimating holes 211;
  • the radiation emitted from the radiation source 1 can converge through the second alignment hole 311 and the first alignment hole 211 at the focus point a.
  • Embodiments of the present invention provide a radiation therapy apparatus including the treatment head provided by the embodiment of the present invention.
  • the radiation therapy apparatus further includes a rotating gantry, the treatment head is fixed on the rotating gantry, and is rotatable around the focus point, and the treatment head is movable in the radial direction of the rotation circumference.
  • the treatment head 10 As shown in FIG. 13, after the treatment head 10 is rotated by 90° under the rotation of the rotating frame, it can be moved to the position of the treatment head 10' in the radial direction of the rotation circumference, that is, 102, wherein the treatment head 10 forms a treatment space. Less than the treatment space formed by the treatment head 10'. As shown in Fig. 14, after the collimation hole of the focus point is selected, the treatment space can also be adjusted by moving the treatment head.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Radiation-Therapy Devices (AREA)

Abstract

一种可调准直器(20)、治疗头(10，10')及放射治疗设备(100)，可调准直器(20)包括第一本体(21)及设置在第一本体(21)上的至少两个准直孔组(22，23，24)，其中，每个准直孔组(22，23，24)包括至少两个第一准直孔(211)，第一准直孔(211)贯穿第一本体(21)的相对两侧；其中，同一个所述准直孔组(22，23，24)的各第一准直孔(211)的中心线汇聚于第一本体(21)一侧的同一聚焦点，不同准直孔组(22，23，24)的各第一准直孔(211)的中心线汇聚于第一本体(21)一侧不同的聚焦点(a，b，c)，且不同聚焦点(a，b，c)到第一本体(21)的距离(d1，d2，d3)不同。可调准直器(20)应用于放射治疗，解决了现有的治疗头(10，10')不能同时用于头部治疗和体部治疗的问题。

Description

一种可调准直器、治疗头及放射治疗设备 技术领域
本发明涉及医疗器械技术领域，尤其涉及一种可调准直器、治疗头及放射治疗设备。
背景技术
放射治疗是通过放射源发出射线，射线聚焦于同一焦点，使得该焦点与人体肿瘤或其他病灶的位置对应，通过射线将肿瘤杀死，从而实现无创治疗的治疗手段。
现有的放射治疗设备100如图1所示，包括旋转机架(图中未示出)和治疗头10，治疗头10安装在旋转机架上，并可在旋转机架上做圆周旋转。如图2所示，为治疗头10的截面图，治疗头10包括放射源1和准直器2，图2中以治疗头10包括四个放射源1为例，则准直器2上形成有4个准直孔3，每个放射源1分别对应一个准直孔3，放射源1发出的射线通过准直孔3汇聚于聚焦点。
如图3所示，为头部治疗示意图，在治疗过程中，人体位于治疗床上，治疗头围绕人体圆周旋转，使得聚焦点对应人体的肿瘤。其中，治疗头旋转形成如图1所示的圆形空间称之为治疗空间，治疗空间的大小取决于聚集点到治疗头的距离。
由于头部肿瘤进行放射治疗要求放射线的剂量率较高，而射线的剂量率与聚焦点到放射源距离的平方成反比，因此头部放射治疗时聚焦点到放射源的距离较小，导致头部放射治疗设备的治疗空间小，仅能满足头部放射治疗设备不能用于体部肿瘤放射治疗。反之，体部肿瘤放射治疗时要求放疗设备的治疗空间要足够大，则聚焦点距离治疗头的距离较大，且准直孔孔径较大，而头部肿瘤往往较小，治疗时需要小孔径的准直孔，若在体部肿瘤放射治疗设备上使用头部放疗设备的小孔径准直孔会导致射线输出剂量率大幅降低，从而无法满足头部肿瘤治疗的要求，因此现有的体部肿瘤放射治疗设备不能用于头部肿瘤放射治疗。即现有的肿瘤放疗设备不能同时用于头部治疗和体部治疗。
发明内容
本发明的实施例提供一种可调准直器、治疗头及放射治疗设备，所述可调准直器可用于治疗头，该可调准直器能够调节聚焦点到治疗头的距离，包括该可调准直器的治疗头可用于头部放射治疗和体部放射治疗。
为达到上述目的，本发明的实施例采用如下技术方案：
第一方面，本发明实施例提供了一种可调准直器，包括第一本体，以及设置在所述第一本体上的至少两个准直孔组，其中，每个所述准直孔组包括至少两个第一准直孔，所述第一准直孔贯穿所述第一本体的相对两侧；
其中，同一个所述准直孔组的各第一准直孔的中心线汇聚于所述本体一侧的同一聚焦点，不同所述准直孔组的各第一准直孔的中心线汇聚于所述本体一侧不同的聚焦点，且不同聚焦点到所述本体的距离不同。
可选的，属于同一所述准直孔组的各第一准直孔位于同一排，属于不同所述准直孔组的各第一准直孔位于不同排。
可选的，属于同一准直孔组的各第一准直孔的孔径大小相同，不同准直孔组的第一准直孔的孔径大小不同。
可选的，聚焦点到所述本体的距离越大，对应所述聚焦点的准直孔组的各第一准直孔的孔径越大。
可选的，每个所述准直孔组包括偶数个第一准直孔，所述偶数个第一准直孔划分为第一准直孔子组和第二准直孔子组，其中，所述第一准直孔子组和所述第二准直孔子组对称；或者，
每个所述准直孔组包括奇数个第一准直孔，所述奇数个第一准直孔关于中间一个第一准直孔的中心线对称。
可选的，每个所述准直孔组包括至少两个准直孔队，属于同一所述准直孔队的各第一准直孔的孔径大小相同，不同所述准直孔队的各第一准直孔的孔径大小不同。
可选的，属于同一所述准直孔队的各第一准直孔位于同一排，属 于不同所述准直孔队的第一准直孔位于不同排。
另一方面，本发明实施例提供了一种治疗头，包括多个放射源以及本发明实施例提供的任一项所述的可调准直器，其中，所述放射源发出的射线可穿过所述可调准直器的第一准直孔汇聚于聚焦点。
可选的，还包括位于所述放射源和所述可调准直器之间的预准直器；
其中，所述预准直器包括第二本体以及设置在所述第二本体上的多个第二准直孔，所述第二准直孔贯穿所述第二本体的相对两侧，其中，所述第二准直孔的孔径大于所述第一准直孔的孔径；
所述放射源发出的射线可穿过所述第二准直孔以及所述第一准直孔汇聚于聚焦点。
再一方面，本发明实施例提供了一种放射治疗设备，包括本发明实施例任一所述的治疗头。
可选的，还包括旋转机架，所述治疗头固定在所述旋转机架上，并可在旋转机架的带动下圆周旋转，且所述治疗头沿旋转圆周的径向可移动。
本发明的实施例提供一种可调准直器、治疗头及放射治疗设备，可应用于治疗头，可调准直器包括第一本体，以及设置在所述第一本体上的至少两个准直孔组，其中，每个所述准直孔组包括至少两个第一准直孔，所述第一准直孔贯穿所述第一本体的相对两侧；其中，同一个所述准直孔组的各第一准直孔的中心线汇聚于所述本体一侧的同一聚焦点，不同所述准直孔组的各第一准直孔的中心线汇聚于所述本体一侧不同的聚焦点，且不同聚焦点与所述本体的距离不同。由于射线的剂量率与聚焦点到放射源距离的平方成反比，治疗空间与聚焦点到包括该可调准直器的治疗头的距离成正比，将本发明实施例提供的可调准直器应用于治疗头，则可以通过调节不同准直孔组使得聚焦点到治疗头的距离不同，实现治疗空间和剂量率的可调性，从而可以根据治疗需要用于头部治疗以及体部治疗。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对 实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有的放射治疗设备示意图；
图2为现有治疗头的截面图；
图3为现有放射治疗设备进行头部治疗的示意图；
图4为本发明实施例提供的一种可调准直器示意图；
图5为图4所示可调准直器的一种截面示意图；
图6为图4所示可调准直器的另一种截面示意图；
图7为本发明实施例提供的另一种可调准直器的截面示意图；
图8为本发明实施例提供的另一种可调准直器的截面示意图；
图9为本发明实施例提供的另一种可调准直器示意图；
图10为本发明实施例提供的同一准直孔组的不同准直孔队的示意图；
图11为本发明实施例提供的一种治疗头示意图；
图12为本发明实施例提供的另一种治疗头示意图；
图13为治疗头沿旋转圆周的径向可移动示意图；
图14为选定聚焦点的准直孔后，通过移动治疗头保持聚焦点不变的示意图。
附图标记：
1-放射源；2-准直器；3-准直孔；10、10’-治疗头；20-可调准直器；21-第一本体；22-第一准直孔组；23-第二准直孔组；24-第三准直孔组；30-预准直器；31-第二本体；100-放射治疗设备；211-第一准直孔；221-第一准直孔队；222-第二准直孔队；231-第三准直孔队；232-第四准直孔队；311-第二准直孔。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供了一种可调准直器20，如图4所示，包括第一本体21，以及设置在第一本体21上的至少两个准直孔组，图4中以第一本体21上形成有三个准直孔组为例，示例的，为第一准直孔组22、第二准直孔组23以及第三准直孔组24。
每个准直孔组包括至少两个第一准直孔，第一准直孔贯穿第一本体的相对两侧。如图4所示，以第一准直孔组22、第二准直孔组23以及第三准直孔组24分别包括四个第一准直孔211为例。
同一个准直孔组的各第一准直孔的中心线汇聚于本体一侧的同一聚焦点，不同准直孔组的各第一准直孔的中心线汇聚于本体一侧不同的聚焦点，且不同聚焦点到本体的距离不同。示例的，如图5所示，第一准直孔组22的各第一准直孔的中心线汇聚于聚焦点a，第二准直孔组23的各第一准直孔的中心线汇聚于聚焦点b，第三准直孔组24的各第一准直孔的中心线汇聚于聚焦点c，其中，聚焦点a到第一本体21的距离为d1，聚焦点b到第一本体21的距离为d2，聚焦点c到第一本体21的距离为d3，d1＞d2＞d3。
将本发明实施例提供的可调准直器应用于治疗头，放射源发出的射线经过不同准直孔组的第一准直孔汇聚于聚焦点。由于射线的剂量率与聚焦点到放射源距离的平方成反比，治疗空间与聚焦点到治疗头的距离成正比。具体的，在治疗头中放射源不变的情况下，聚焦点到本体的距离越大，则该聚焦点处射线的剂量率越小，包括该可调准直器的治疗头形成的治疗空间越大，从而可以用于体部治疗。反之，聚焦点到本体的距离越小，则该聚焦点处的射线的剂量率越高，包括该可调准直器的治疗头形成的治疗空间越小，从而可以用于头部治疗。
需要说明的是，参照图5所示，第一准直孔组22的聚焦点a、第二准直孔组23的聚焦点b以及第三准直孔组24的聚焦点c均位于 第一本体21的中心线上。而本发明实施例中，对不同准直孔组的聚焦点的具体位置不做具体限定。示例的，参照图6所示，第一准直孔组22的聚焦点a可以是位于第一本体21的中心线上，第二准直孔组23的聚焦点b可以是位于第一本体21的中心线的一侧，第三准直孔组24的聚焦点c可以是位于第一本体21的中心线的另一侧。
此外，第一本体可以是如图4所示的长方体，还可以是圆环等，本发明实施例对第一本体的形状不做具体限定。聚焦点到本体的距离为以第一本体上的任意平面作为基准面，聚焦点到该基准面的距离。示例的，参照图7所示，第一本体21中准直孔穿过的两侧均为弧面，则第一准直孔组22的聚焦点a到第一本地21的距离为以第一本体21靠近聚焦点a一侧表面的切面为基准面，聚焦点a到第一本体21的距离为d1即为聚焦点a到该基准面的距离。
本发明实施例提供了一种可调准直器，可应用于治疗头，可调准直器包括第一本体，以及设置在所述第一本体上的至少两个准直孔组，其中，每个准直孔组包括至少两个第一准直孔，第一准直孔贯穿第一本体的相对两侧；其中，同一个准直孔组的各第一准直孔的中心线汇聚于本体一侧的同一聚焦点，不同准直孔组的各第一准直孔的中心线汇聚于本体一侧不同的聚焦点，且不同聚焦点与本体的距离不同。由于射线的剂量率与聚焦点到放射源距离的平方成反比，治疗空间与聚焦点到包括该可调准直器的治疗头的距离成正比，将本发明实施例提供的可调准直器应用于治疗头，则可以通过调节不同准直孔组使得聚焦点到治疗头的距离不同，实现治疗空间和剂量率的可调性，从而可以根据治疗需要用于头部治疗以及体部治疗。
示例的，参照图4、图5所示，若包括图4所示可调准直器的治疗设备用于体部肿瘤治疗时，则可以将放射源与第一准直孔组22对齐，则聚焦点为a，由于聚焦点a到第一本体21的距离较大，从而可以满足体部肿瘤治疗的大治疗空间的要求。若包括图4所示可调准直器的治疗设备用于头部肿瘤放射治疗时，将放射源与第三准直孔组24对齐，则聚焦点为c，由于聚焦点c到第一本体21的距离较小，射线的剂量率较高，从而可以满足头部肿瘤治疗的高剂量率的要求。
进一步的，属于同一准直孔组的各第一准直孔位于同一排，属于 不同准直孔组的各第一准直孔位于不同排。如图4所示，属于第一准直孔组22的各第一准直孔位于同一排、属于第二准直孔组23的各第一准直孔位于同一排、属于第三准直孔组24的各第一准直孔位于同一排位于同一排，且第一准直孔组22、第二准直孔组23以及第三准直孔组24分别位于不同排。
当然，属于不同准直孔组的各第一准直孔也可以位于同一排，本发明实施例对其具体位置不做限定。
进一步的，位于同一准直孔组的各第一准直孔的孔径大小相同，不同准直孔组的第一准直孔的孔径大小不同。
此外，由于头部肿瘤一般比体部肿瘤小，头部肿瘤进行放射治疗时，要求准直孔的孔径较小，体部肿瘤体部肿瘤进行放射治疗时，对准直孔的孔径要求较低。则本发明实施例优选的，聚焦点与本体的距离越大，对应聚焦点的准直孔组的各第一准直孔的孔径越大，可用于体部肿瘤治疗。同理，聚焦点与本体的距离越小，对应聚焦点的准直孔组的各第一准直孔的孔径越小，可用于头部肿瘤治疗。
优选的，每个准直孔组包括偶数个第一准直孔，偶数个第一准直孔划分为第一准直孔子组和第二准直孔子组，其中，第一准直孔子组和第二准直孔子组对称，则每个准直孔组对应的聚焦点位于第一准直孔子组和第二准直孔子组的对称轴上，更方便进行摆位。如图4、图5所示，每个准直孔组包括四个准直孔，其中四个准直孔组相对于第一本体的中心线对称。
或者，每个准直孔组包括奇数个第一准直孔，奇数个第一准直孔关于中间一个第一准直孔的中心线对称，则每个准直孔组对应的聚焦点位于该准直孔组中各第一准直孔的对称轴上，更方便进行摆位。如图8所示，准直孔组包括五个第一准直孔，其中，位于中间的第一准直孔的两侧的两个第一准直孔关于位于中间的第一准直孔的中心线对称。
每个准直孔组包括至少两个准直孔队，位于同一准直孔队的各第一准直孔的孔径相同，位于不同准直孔队的各第一准直孔的孔径不同。如图9所示，第一本体21上设置有两个准直孔组，分别为第一准直孔组22和第二准直孔组23，其中，第一准直孔组22包括两个 准直孔队，分别为第一准直孔队221和第二准直孔队222；第二准直孔组23包括两个准直孔队，分别为第三准直孔队231和第四准直孔队232。以第一准直孔组22中的第一准直孔队221和第二准直孔队222为例，参照图10所示，第一准直孔队221的聚焦点a到第一本体21的距离为d1，第二准直孔队222的聚焦点d到第一本体21的距离为d2，d1＝d2。第一准直孔队221的各第一准直孔的孔径为D1，第二准直孔队222的各第一准直孔的孔径为D2，D1＞D2。从而在聚焦点位置不变的情况下，还可以通过调节不同的准直孔队调节射线的剂量率。
位于同一准直孔队的各第一准直孔的孔径大小相同且位于同一排，位于不同准直孔队的第一准直孔的孔径大小不同且位于不同排。如图9所示，第一准直孔组22包括第一准直孔队221和第二准直孔队222，其中，第一准直孔队221的各第一准直孔的孔径大小相同且位于同一排，第二准直孔队222的各第一准直孔的孔径大小相同且位于同一排。第二准直孔组23包括第三准直孔队231和第四准直孔队232，其中，第三准直孔队231的各第一准直孔的孔径大小相同且位于同一排，第四准直孔队232的各第一准直孔的孔径大小相同且位于同一排。
本发明实施例提供了一种治疗头，包括多个放射源以及本发明实施例提供的任一可调准直器，其中，放射源发出的射线可穿过可调准直器的第一准直孔汇聚于聚焦点。
具体的，以图4所示的可调准直器为例，参照图11所示，每个放射源1分别对应一个第一准直孔211，可调准直器可沿图4所示的101方向运动，使得放射源1与不同的准直孔组对应，从不同准直孔组的各第一准直孔射出并汇聚于聚焦点。
当然，在可调准直器的第一本体为圆环的情况下，还可以通过转动圆环使得放射源穿过不同准直孔组以形成不同位置处的聚焦点。
若属于不同准直孔组的各第一准直孔也位于同一排，则可以沿该排各第一准直孔的排列方向移动，从而使得放射源穿过不同组以形成不同位置处的聚焦点。
优选的，如图11所示，放射源1为圆柱状，放射源1的中心线 与第一准直孔211的中心线重合。从而放射源的利用率较高，有利于提高聚焦点处的射线剂量率。由于本发明实施例中，不同准直孔组的各第一准直孔的中心线相互不平行，进一步为了实现放射源的中心线与不同准直孔组中的各第一准直孔的中心线重合，则本发明实施例中放射源的轴线可调节。
可选的，如图12所示，治疗头还包括位于放射源1和可调准直器21之间的预准直器30；其中，预准直器30包括第二本体31以及设置在第二本体31上的多个第二准直孔311，第二准直孔311贯穿第二本体31的相对两侧，其中，第二准直孔311的孔径大于第一准直孔211的孔径；放射源1发出的射线可穿过第二准直孔311以及第一准直孔211汇聚于聚焦点a。
本发明实施例提供了一种放射治疗设备，包括本发明实施例提供的治疗头。
进一步的，放射治疗设备还包括旋转机架，治疗头固定在旋转机架上，并可围绕聚焦点圆周旋转，且治疗头沿旋转圆周的径向可移动。
如图13所示，治疗头10在旋转机架的带动下旋转90°后，沿旋转圆周的径向即102方向可移动至治疗头10’的位置处，其中，治疗头10形成的治疗空间小于治疗头10’形成的治疗空间。结合图14所示，在选定聚焦点的准直孔后，还可以通过移动治疗头，从而可以调整治疗空间。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (11)

  1. 一种可调准直器，其特征在于，包括第一本体，以及设置在所述第一本体上的至少两个准直孔组，其中，每个所述准直孔组包括至少两个第一准直孔，所述第一准直孔贯穿所述第一本体的相对两侧；
    其中，同一个所述准直孔组的各第一准直孔的中心线汇聚于所述本体一侧的同一聚焦点，不同所述准直孔组的各第一准直孔的中心线汇聚于所述本体一侧不同的聚焦点，且不同聚焦点到所述本体的距离不同。
  2. 根据权利要求1所述的可调准直器，其特征在于，属于同一所述准直孔组的各第一准直孔位于同一排，属于不同所述准直孔组的各第一准直孔位于不同排。
  3. 根据权利要求2所述的可调准直器，其特征在于，属于同一准直孔组的各第一准直孔的孔径大小相同，不同准直孔组的第一准直孔的孔径大小不同。
  4. 根据权利要求3所述的可调准直器，其特征在于，聚焦点到所述本体的距离越大，对应所述聚焦点的准直孔组的各第一准直孔的孔径越大。
  5. 根据权利要求1-4任一项所述的可调准直器，其特征在于，每个所述准直孔组包括偶数个第一准直孔，所述偶数个第一准直孔划分为第一准直孔子组和第二准直孔子组，其中，所述第一准直孔子组和所述第二准直孔子组对称；或者，
    每个所述准直孔组包括奇数个第一准直孔，所述奇数个第一准直孔关于中间一个第一准直孔的中心线对称。
  6. 根据权利要求1所述的可调准直器，其特征在于，每个所述准直孔组包括至少两个准直孔队，属于同一所述准直孔队的各第一准直孔的孔径大小相同，不同所述准直孔队的各第一准直孔的孔径大小不同。
  7. 根据权利要求6所述的可调准直器，其特征在于，属于同一所述准直孔队的各第一准直孔位于同一排，属于不同所述准直孔队的第一准直孔位于不同排。
  8. 一种治疗头，其特征在于，包括多个放射源以及如权利要求1-7任一项所述的可调准直器，其中，所述放射源发出的射线可穿过所述可调准直器的第一准直孔汇聚于聚焦点。
  9. 根据权利要求8所述的治疗头，其特征在于，还包括位于所述 放射源和所述可调准直器之间的预准直器；
    其中，所述预准直器包括第二本体以及设置在所述第二本体上的多个第二准直孔，所述第二准直孔贯穿所述第二本体的相对两侧，其中，所述第二准直孔的孔径大于所述第一准直孔的孔径；
    所述放射源发出的射线可穿过所述第二准直孔以及所述第一准直孔汇聚于聚焦点。
  10. 一种放射治疗设备，其特征在于，包括如权利要求8或9所述的治疗头。
  11. 根据权利要求10所述的放射治疗设备，其特征在于，还包括旋转机架，所述治疗头固定在所述旋转机架上，并可在旋转机架的带动下圆周旋转，且所述治疗头沿旋转圆周的径向可移动。
PCT/CN2016/079213 2016-04-13 2016-04-13 一种可调准直器、治疗头及放射治疗设备 WO2017177405A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2016/079213 WO2017177405A1 (zh) 2016-04-13 2016-04-13 一种可调准直器、治疗头及放射治疗设备
CN201680002220.5A CN106794361B (zh) 2016-04-13 2016-04-13 一种可调准直器、治疗头及放射治疗设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/079213 WO2017177405A1 (zh) 2016-04-13 2016-04-13 一种可调准直器、治疗头及放射治疗设备

Publications (1)

Publication Number Publication Date
WO2017177405A1 true WO2017177405A1 (zh) 2017-10-19

Family

ID=58952973

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/079213 WO2017177405A1 (zh) 2016-04-13 2016-04-13 一种可调准直器、治疗头及放射治疗设备

Country Status (2)

Country Link
CN (1) CN106794361B (zh)
WO (1) WO2017177405A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108478941A (zh) * 2018-04-28 2018-09-04 西安大医数码科技有限公司 放射治疗装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019023946A1 (zh) * 2017-08-01 2019-02-07 西安大医数码科技有限公司 治疗装置及治疗头的控制方法
WO2019174461A1 (zh) * 2018-03-16 2019-09-19 西安大医集团有限公司 聚焦头、准直器及伽玛刀
CN108175958B (zh) * 2018-03-16 2020-03-17 西安大医集团有限公司 聚焦头、准直器及伽玛刀
CN109464753B (zh) * 2018-10-12 2020-10-27 高飞 放射治疗仪的放射束引导机构
CN109659061B (zh) * 2018-12-27 2020-06-23 中国原子能科学研究院 发散角连续可调的中子准直器结构及其标定方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2249095Y (zh) * 1996-06-17 1997-03-12 郑铁 多源放射线旋转式全身治疗机的准直聚焦及屏蔽装置
CN2493233Y (zh) * 2001-07-26 2002-05-29 张晓翔 伽马射线循迹扫描适形调强治疗装置
DE10257206A1 (de) * 2002-12-06 2004-07-15 Siemens Ag Röntgenbestrahlungseinrichtung
CN2772541Y (zh) * 2005-03-03 2006-04-19 卢艳 一种伽玛射线放射治疗装置
CN1810320A (zh) * 2005-01-28 2006-08-02 惠小兵 一种放射治疗装置
EP2248551A1 (en) * 2009-05-05 2010-11-10 7Sigma N.V. Method for the verification of a radiotherapy treatment apparatus
CN103928075A (zh) * 2013-01-15 2014-07-16 上海荣乔生物科技有限公司 准直器出口距焦点距离不同的准直装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102441238A (zh) * 2010-09-30 2012-05-09 上海世鹏实验室科技发展有限公司 放射治疗装置、辐射装置及准直装置
JP6132477B2 (ja) * 2012-05-08 2017-05-24 東芝メディカルシステムズ株式会社 医用画像診断装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2249095Y (zh) * 1996-06-17 1997-03-12 郑铁 多源放射线旋转式全身治疗机的准直聚焦及屏蔽装置
CN2493233Y (zh) * 2001-07-26 2002-05-29 张晓翔 伽马射线循迹扫描适形调强治疗装置
DE10257206A1 (de) * 2002-12-06 2004-07-15 Siemens Ag Röntgenbestrahlungseinrichtung
CN1810320A (zh) * 2005-01-28 2006-08-02 惠小兵 一种放射治疗装置
CN2772541Y (zh) * 2005-03-03 2006-04-19 卢艳 一种伽玛射线放射治疗装置
EP2248551A1 (en) * 2009-05-05 2010-11-10 7Sigma N.V. Method for the verification of a radiotherapy treatment apparatus
CN103928075A (zh) * 2013-01-15 2014-07-16 上海荣乔生物科技有限公司 准直器出口距焦点距离不同的准直装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108478941A (zh) * 2018-04-28 2018-09-04 西安大医数码科技有限公司 放射治疗装置
US12036424B2 (en) 2018-04-28 2024-07-16 Our United Corporation Radiation therapy head and radiation therapy apparatus

Also Published As

Publication number Publication date
CN106794361B (zh) 2019-09-20
CN106794361A (zh) 2017-05-31

Similar Documents

Publication Publication Date Title
WO2017177405A1 (zh) 一种可调准直器、治疗头及放射治疗设备
CN108245787B (zh) 一种多用途放射治疗系统
US9694210B2 (en) Multi-purpose radiation therapy system
US20200238106A1 (en) Radiation therapeutic head, collimator assembly, and control method of radiotherapeutic equipment
RU2019121943A (ru) Системы и способы лучевой терапии
US20200197727A1 (en) Collimator, radiotherapy device and control driving method thereof
WO2019196767A1 (zh) 一种图像引导放射治疗设备
WO2019137295A1 (zh) 放疗设备及放疗系统
WO2018090194A1 (zh) 一种放射治疗系统及其控制驱动方法
US20200338369A1 (en) Radiation therapy device and system
JP7250138B2 (ja) 放射線治療装置
WO2019196137A1 (zh) 放射治疗头及放射治疗装置
WO2016050152A1 (zh) 多层错位耦合准直器、辐射器、探测装置及扫描设备
WO2019015412A1 (zh) 一种x射线的聚焦方法、装置及放疗设备
CN203436706U (zh) 一种非等距聚焦放射装置
US20120314840A1 (en) Radiation therapy device and method for generating a resolution enhancement in irradiated radiation-exposure fields
WO2019196818A1 (zh) 一种放射治疗头、放射治疗设备及系统
US20130240761A1 (en) Self-focusing radioactive source device and radiating apparatus employing the same
CN208990085U (zh) 一种图像引导放射治疗设备
CN208493021U (zh) 一种放疗设备
Zhang et al. Feasibility study of real‐time planning for stereotactic radiosurgery
JPH05337207A (ja) 定位的放射線治療装置
WO2019174461A1 (zh) 聚焦头、准直器及伽玛刀
Yoon et al. Mask dependency of the lacrimal gland dose under whole brain radiotherapy when the six‐degrees of freedom couch is not available
WO2014131179A1 (zh) 伽玛刀头部治疗装置及伽玛刀治疗系统

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16898224

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 16898224

Country of ref document: EP

Kind code of ref document: A1