WO2019023946A1 - 治疗装置及治疗头的控制方法 - Google Patents

治疗装置及治疗头的控制方法 Download PDF

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Publication number
WO2019023946A1
WO2019023946A1 PCT/CN2017/095504 CN2017095504W WO2019023946A1 WO 2019023946 A1 WO2019023946 A1 WO 2019023946A1 CN 2017095504 W CN2017095504 W CN 2017095504W WO 2019023946 A1 WO2019023946 A1 WO 2019023946A1
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Prior art keywords
treatment head
treatment
focus
head
distance
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PCT/CN2017/095504
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English (en)
French (fr)
Inventor
白燕春
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西安大医数码科技有限公司
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Application filed by 西安大医数码科技有限公司 filed Critical 西安大医数码科技有限公司
Priority to CN201780088536.5A priority Critical patent/CN110430921A/zh
Priority to PCT/CN2017/095504 priority patent/WO2019023946A1/zh
Publication of WO2019023946A1 publication Critical patent/WO2019023946A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/01—Devices for producing movement of radiation source during therapy

Definitions

  • the present invention relates to the field of medical technology, and in particular, to a treatment device and a control method for a treatment head.
  • the treatment device for radiation therapy may include a treatment head, which generally includes a radiation source and a collimator, and the radiation emitted by the radiation source is beam-shaped by the collimator and irradiated to the tumor lesion area to kill the tumor cells in the tumor lesion area. .
  • a body treatment device 1 for treating a tumor of a body such as a chest and abdomen.
  • the human body is located in the accommodating space, and the tumor is corresponding to the focus position of the treatment head.
  • the treatment head 11 is rotated about the rotation axis Y to perform rotational irradiation treatment on the tumor, and the distance from the radiation source to the focus of the treatment head 1 is Larger to form a rotating space that can accommodate the body.
  • the dose rate at the focus is inversely proportional to the square of the distance, ie the greater the distance from the source to the focus, the smaller the dose rate at the focus.
  • the body tumor is generally large, a large collimation aperture is generally used, and the dose rate of the focus is large, so that the high dose rate requirement of the body treatment can be satisfied.
  • Human tumors include not only body tumors, but also head tumors. Because the tumor area of the head tumor is small, and the surrounding tissue of the head tumor is dense, it is generally required to use a smaller collimating aperture, and the body treatment device The distance from the source of the treatment head to the focus is large. When the body treatment device is used to treat the head tumor, the dose rate at the focus is small, which cannot meet the high dose rate requirement for treating the head tumor. Therefore, the relevant Therapeutic devices in the art generally include a head treatment device and a body treatment device, and no treatment device can be simultaneously applied to treat head tumors and body tumors.
  • the present invention provides a treatment device and a control method for the treatment head.
  • the technical solution is as follows:
  • a treatment device comprising: a treatment head and a control assembly,
  • the control component is used to:
  • Controlling the treatment head from moving from the first position to the second position, and the motion trajectory of the treatment head is not related to the connection of the radiation source of the treatment head to the focus of the treatment head before the movement of the treatment head line;
  • the distance from the radiation source of the treatment head to the focus of the treatment head is a first distance
  • the distance from the source of the treatment head to the focus of the treatment head is a second distance, the first distance being not equal to the second distance
  • the treatment device further comprises: a slide rail
  • the control component is further configured to control the movement of the treatment head from the first position to the second position by controlling movement of the treatment head along the slide rail.
  • the first position and the second position are displaced in a length direction of the preset axis, and a focus of the treatment head when the treatment head is in the first position, The focus of the treatment head is located on the predetermined axis when the treatment head is in the second position.
  • the first position and the second position are displaced in a length direction of the preset axis, and the control component is further configured to:
  • the treatment head is controlled to rotate circumferentially about the predetermined axis to effect rotational illumination therapy.
  • the treatment device further includes: a drum, the predetermined axis is an axis of rotation of the drum, and the treatment head is disposed on an inner wall of the drum,
  • the control assembly is further configured to rotate the roller about the predetermined axis such that the roller rotates the treatment head about the predetermined axis.
  • control component is further configured to control the treatment head to pivot about at least one axis.
  • control component is further configured to:
  • the second position is determined based on the second distance.
  • a method of controlling a treatment head comprising:
  • Controlling the treatment head from moving from the first position to the second position, and the motion trajectory of the treatment head is not related to the connection of the radiation source of the treatment head to the focus of the treatment head before the movement of the treatment head Line
  • the distance from the radiation source of the treatment head to the focus of the treatment head is a first distance
  • the distance from the source of the treatment head to the focus of the treatment head is a second distance, the first distance being not equal to the second distance
  • the treatment device in which the treatment head is located further includes: a slide rail, wherein controlling the treatment head to move from the first position to the second position comprises:
  • the movement of the treatment head from the first position to the second position is controlled by controlling movement of the treatment head along the slide rail.
  • the first position and the second position are displaced in a length direction of the preset axis, and a focus of the treatment head when the treatment head is in the first position, The focus of the treatment head is located on the predetermined axis when the treatment head is in the second position.
  • the first position and the second position are displaced in a length direction of the preset axis, and the method further includes:
  • the treatment head is controlled to rotate circumferentially about the predetermined axis to effect rotational illumination therapy.
  • the treatment device in which the treatment head is located further includes: a drum, the predetermined axis is an axis of rotation of the drum, the treatment head is disposed on an inner wall of the drum, and the treatment head is controlled Rotating around the predetermined axis, including:
  • the drum By rotating the drum about the predetermined axis, the drum causes the treatment head to rotate circumferentially about the predetermined axis.
  • the method further includes:
  • the treatment head is controlled to pivot about at least one axis.
  • the method before the controlling the treatment head to move from the first position to the second position, the method further includes:
  • the second position is determined based on the second distance.
  • a computer readable storage medium wherein a storage is stored in the storage medium
  • the program of the first aspect is implemented when the computer program is executed by a processor.
  • the control assembly is capable of controlling the treatment head to move from the first position to the second position to adjust the distance between the radiation source of the treatment head and the focus of the treatment head from the first distance to the second distance, so that the treatment The distance between the source of the head and the focus of the treatment head can be adjusted. Therefore, the distance between the radiation source and the focus can be adjusted according to the radiation dose rate at the current focus, so that the radiation dose rate at the focus meets the dose rate requirement, and therefore, the treatment device provided by the embodiment of the present invention can be simultaneously applied to the treatment head. Tumors and body tumors.
  • FIG. 1 is a schematic structural view of a treatment device provided by the related art
  • FIG. 2 is a schematic structural diagram of a treatment device according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of another treatment device according to an embodiment of the present invention.
  • FIG. 4(a) is a schematic structural view of still another treatment device according to an embodiment of the present invention.
  • FIG. 4(b) is a schematic structural view of still another treatment device according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a method for controlling a treatment head according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a method for controlling a treatment head according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a treatment apparatus according to an embodiment of the present invention.
  • the treatment apparatus 0 may include: a treatment head 01 and a control component (not shown in FIG. 2), and the control component may be used for :
  • the treatment head 01 is controlled to move from the first position W1 to the second position W2, and the motion trajectory of the treatment head 01 is not collinear with the line connecting the radiation source of the treatment head 01 to the focus A of the treatment head 01 before the movement of the treatment head 01.
  • the distance from the radiation source of the treatment head 01 to the focus A of the treatment head 01 is the first distance D1
  • the radiation of the treatment head 01 The distance from the focus A to the treatment head 01 is the second distance D2
  • the first distance D1 is not equal to The second distance D2.
  • the first distance D1 is greater than the second distance D2. In practical applications, the first distance D1 may also be smaller than the second distance D2.
  • the trajectory of the treatment head 01 is not collinear with the line connecting the radiation source of the treatment head 01 to the focus A of the treatment head 01 before the treatment head 01 is moved, that is, the movement direction of the treatment head is different from the radiation exit direction of the radiation source.
  • the radiation source emits a beam in the radial direction of the drum, and the treatment head can be moved along the axial direction of the drum to move from the first position to the second position. .
  • the control component is capable of controlling the treatment head to move from the first position to the second position to adjust the distance between the radiation source of the treatment head and the focus of the treatment head from the first distance.
  • the distance between the source of the treatment head and the focus of the treatment head can be adjusted. Therefore, the distance between the radiation source and the focus can be adjusted according to the radiation dose rate at the current focus, so that the radiation dose rate at the focus meets the dose rate requirement, and therefore, the treatment device provided by the embodiment of the present invention can be simultaneously applied to the treatment head. Tumors and body tumors.
  • the distance from the source of the cobalt-60 treatment head to the focus is the distance of the cobalt-60 to the focus.
  • the accelerator treatment head emits X-rays by electronically striking a metal target, and the distance from the source of the accelerator treatment head to the focus may be the distance from the metal target to the target at the time of treatment.
  • the tumor lesions in different parts of the human body are different.
  • the tumor lesion area located in the body is usually larger than the tumor lesion area located in the head, and the number of nerve cells in the head is much larger than that of other parts.
  • the treatment head 01 before the control component controls the movement of the treatment head 01, the treatment head 01 is in the first position. At this time, the distance between the radiation source of the treatment head 01 and the focus A is a larger first distance D1, and the focus A is The collimating aperture can be a larger first collimating aperture (not shown in Figure 2) that can be adapted to treat a tumor lesion area located in the body.
  • the treatment head 01 After the control unit controls the movement of the treatment head 01, the treatment head 01 is in the second position, at which time the distance between the radiation source of the treatment head 01 and the focus A is a small second distance D2, when a smaller collimation aperture is used. Focusing allows the dose rate at the focus to meet the high dose rate requirements of the head tumor treatment so that the treatment head 01 can be adapted to treat a tumor lesion area located in the head.
  • control assembly moves the control treatment head 01 from the first position W1 to the second position W2.
  • control component can also determine the current tumor lesion area to be treated, and according to the characteristics of the current tumor lesion area to be treated, obtain a second distance from the radiation source of the treatment head to the focus of the treatment head, and then determine according to the second distance.
  • the treatment head needs to be in the second position.
  • the control assembly can then control the treatment head 01 to move to the second position W2 such that the distance from the source of the treatment head to the focus is a second distance when the treatment head is in the second position W2.
  • control assembly can control the movement of the treatment head in a variety of achievable manners to move the treatment head from the first position to the second position.
  • the treatment device may further include a mechanical arm (not shown in FIG. 2), and the control assembly may hold the treatment head 01 by controlling the mechanical arm and drive the treatment head 01 to move, thereby causing the treatment head 01 Moving from the first position W1 to the second position W2.
  • the treatment device can further include a slide rail, and the control assembly can control the treatment head to slide over the slide rail to move the treatment head from the first position to the second position.
  • FIG. 3 is a schematic structural diagram of another therapeutic apparatus according to an embodiment of the present invention
  • FIG. 4( a ) is a schematic structural diagram of still another therapeutic apparatus according to an embodiment of the present invention
  • FIG. 4( b ) is a schematic diagram of the present invention.
  • the treatment device 0 may further include: a slide rail 02.
  • the control assembly can control the treatment head 01 to slide over the slide rail 02 to move the treatment head 01 from the first position W1 to the second position W2.
  • FIG. 3 FIG. 4(a) and FIG. 4(b)
  • the shape of the slide rail 02 may not be FIG. 3.
  • the shape shown in FIG. 4(a) and FIG. 4(b), such as a linear shape, or other irregular shape, is not limited in the embodiment of the present invention.
  • FIG. 3 there is a displacement of the focus A of the treatment head 01 when the treatment head 01 is at the first position W1 and the focus A of the treatment head 01 when the treatment head 01 is at the second position W2. That is, the position of the focus A of the treatment head 01 before the treatment head 01 is moved is different from the position of the focus A of the treatment head 01 after the treatment head 01 is exercised.
  • the treatment device can also include a treatment couch 03.
  • the treatment head 01 When the treatment head 01 is in the first position W1, the treatment head 01 can be used to treat a tumor lesion area located in the body. After the human body is lying on the treatment couch 03, the control assembly needs to control the treatment couch 03 to move such that the focus of the treatment head 01 falls on the tumor lesion area B located in the body.
  • the treatment head 01 When the treatment head 01 is in the second position W2, the treatment head 01 can For the treatment of head tumors. After the human body is lying on the treatment couch 03, the control assembly needs to control the treatment couch 03 to move such that the focus of the treatment head 01 falls in the tumor lesion area C located in the head.
  • the position of the focus of the treatment head 01 is different, and therefore, in the tumor lesion area located at the head and When the tumor lesion area located in the body is treated, the location of the tumor lesion located in the head and the tumor lesion area located in the body are different.
  • the body tumor and the head tumor may also be tumors of different patients, and the present application only uses FIG. 3 . Show examples.
  • the focus A of the treatment head 01 when the treatment head 01 is at the first position W1 and the treatment head 01 when the treatment head 01 is at the second position W2 The focus A does not have a displacement. That is, the position of the focus A of the treatment head 01 before the movement of the treatment head 01 is the same as the position of the focus A of the treatment head 01 after the treatment head 01 is exercised.
  • the treatment device can also include a treatment couch 03.
  • the treatment head 01 when the treatment head 01 is in the first position W1, the treatment head 01 can be used to treat a body tumor, and after the human body is lying on the treatment bed 03, the control unit needs to control the treatment bed 03. Move so that the focus of the treatment head 01 falls on the tumor lesion area B located in the body, at which point the focus can be the isocenter of the device.
  • the treatment head 01 when the treatment head 01 is in the second position W2, the treatment head 01 can be used to treat the head tumor, and after the human body is lying on the treatment bed 03, the control unit needs to control the treatment bed 03. Move so that the focus of the treatment head 01 falls in the tumor lesion area C located in the head, at which point the focus is the isocenter of the device.
  • the position of the focus A of the treatment head 01 does not change, that is, The focus of the treatment head is still the isocenter of the device, so when the tumor lesion area located in the head and the tumor lesion area located in the body are treated separately, the tumor lesion area located in the head and the tumor lesion located in the body The regions are located at the same center during treatment, avoiding multiple focuss on the focus, isocenter, and tumor.
  • 4(a) and 4(b) take the case where the tumor is located in the body and the head of the human body respectively. In practical applications, the body tumor and the head tumor are different patients, and the present application only uses FIG. 4 (a). ) and FIG. 4(b) are illustrated as an example.
  • the focus of the treatment head can always be aligned with the tumor as the treatment head rotates about the predetermined axis X.
  • the position of the focus of the treatment head changes during the control of the movement of the treatment head from the first position to the second position, the first position W1 and the second position W2 are in the length direction of the predetermined axis X There are displacements.
  • the control assembly can also be used to control the radiation source of the treatment head 01 to emit radiation to the focus, thereby causing the treatment head 01 to treat the tumor lesion area where the focus is located. Further, when the treatment head 01 emits radiation, the control assembly can also be used to control the circumference of the treatment head 01 about the predetermined axis X to achieve rotational illumination treatment of the tumor lesion area.
  • the human body can lie on the treatment bed 03.
  • the predetermined axis X can be an axis passing through the human tumor. Therefore, when the treatment head 01 rotates around the preset axis X, the treatment head 01 also rotates around the human body. Thereby the focus is always on the human tumor to kill the tumor cells.
  • the treatment device 0 may further include a drum 04, and the predetermined axis X may be the rotation axis of the drum 04.
  • FIGS. 3, 4(a) and 4(b) each show a side view of the drum 04.
  • the control unit needs to control the rotation of the treatment head 01 about the predetermined axis X, it can be rotated by the control roller 04 about the predetermined axis X, so that the roller 04 drives the treatment head 01 to rotate around the preset axis X.
  • the treatment device may not include a roller.
  • the control component When the control component needs to control the circumference of the treatment head to rotate around the preset axis, the control component can drive the treatment head around the preset axis through a mechanical arm (such as a C-arm) or other structural member.
  • a mechanical arm such as a C-arm
  • the circumferential rotation is not limited in the embodiment of the present invention.
  • control assembly can not only control the circular movement of the treatment head 01 about a predetermined axis, but the control assembly can also control the treatment head 01 to pivot about at least one axis.
  • the treatment head can be wound.
  • the shaft M1 is pivoted, or the treatment head can be pivoted about the axis M2, or alternatively, the treatment head can be pivoted about the axis M1 and the axis M2.
  • the control component can not only control the rotation of the treatment head 01 about a predetermined axis, but also the treatment head can pivot about the axis, so that the treatment head 01 can emit radiation from different directions toward the tumor lesion area.
  • the treatment head pivoting may be at any position, for example, the treatment head is moved to the second position and can also pivot about at least one axis, and FIG. 4(a) is only exemplified by the treatment head being located at the first position W1.
  • the pivot axis of the treatment head may be at any position, for example, the treatment head is moved to the second position and can also pivot about at least one axis, and FIG. 4(a) is only exemplified by the treatment head being located at the first position W1. The pivot axis of the treatment head.
  • the treatment device 0 may further include: an electronic field imaging component 05, and the treatment head 01 and the electronic field imaging component 05 may be disposed on the drum 04.
  • the inner wall and the electronic field imaging component 05 are disposed opposite to the treatment head 01, and the electronic portal imaging component 05 can be used to receive the radiation emitted by the treatment head 01.
  • the electronic field imaging component 05 can also be moved in a position disposed in the drum, and the electronic portal image component 05 can also perform imaging according to the received radiation, or determine that the lesion area is received according to the received radiation. The dose of the ray.
  • the treatment device 0 may further include an imaging device, which may be a cone beam computed tomography (CBCT) device, and the imaging device includes: a tube (not shown in the drawing) And the detector (not shown in the drawing), the bulb and the detector can be disposed on the inner wall of the drum 04, and the detector is disposed opposite to the tube.
  • the human body When the human body is lying on the treatment bed, the human body can be located in the detection.
  • the bulb is used to emit radiation to the detector, and the detector is used to receive radiation from the bulb. That is, during the treatment of the head 01 emitting radiation to the tumor area of the human body, the tube can also be controlled to emit radiation to the detector, so that the detector determines that the tumor is treated according to the received radiation.
  • the movement of the tumor changes. For example, the position of the bulb and the detector on the drum 04 can be adjusted.
  • the treatment device 0 may further include: a radiation protection component 06, which may be disposed on the inner wall of the drum 04, and the radiation protection component 06 and The treatment head 01 is relatively set.
  • the radiation protection assembly 06 can be used to absorb radiation from the treatment head 01, thereby reducing the dose of radiation in the surrounding environment.
  • the radiation protection assembly 06 disposed on the opposite side of the treatment head 01 can effectively balance the force of the drum 04 during the rotation of the treatment head 01.
  • the radiation protection component 06 can be a lead block or an iron block.
  • the treatment device provided by the embodiment of the present invention may include a treatment head (for example, the treatment device includes a treatment head in FIGS. 2, 3, 4(a), and 4(b)), or Multiple treatment heads; the treatment head can be a focused treatment head (Fig. 2, Fig. 3, Fig. 4(a) and Fig. 4(b) both take the treatment head as a focus treatment head), a conformal treatment head or other
  • the treatment head, the radiation from the hair may be: X-rays, neutron rays, proton rays or gamma rays emitted by cobalt-60, or other rays capable of killing tumor cells; this embodiment of the invention is not limited thereto.
  • the control component is capable of controlling the treatment head to move from the first position to the second position to distance the radiation source of the treatment head from the focus of the treatment head from the first distance. Adjusted to a second distance so that the distance between the source of the treatment head and the focus of the treatment head is adjustable whole. Therefore, the distance between the radiation source and the focus can be adjusted according to the radiation dose rate at the current focus, so that the radiation dose rate at the focus meets the dose rate requirement, and therefore, the treatment device provided by the embodiment of the present invention can be simultaneously applied to the treatment head. Tumors and body tumors.
  • FIG. 5 is a flowchart of a method for controlling a treatment head according to an embodiment of the present invention.
  • the control method of the treatment head can be used for a control component in a treatment device.
  • the control method of the treatment head can be include:
  • Step 501 Control the treatment head to move from the first position to the second position, and the movement trajectory of the treatment head is not collinear with the connection of the radiation source of the treatment head to the focus of the treatment head before the movement of the treatment head; wherein, when the treatment head When in the first position, the distance from the radiation source of the treatment head to the focus of the treatment head is a first distance, and when the treatment head is at the second position, the distance from the radiation source of the treatment head to the focus of the treatment head is a second distance, A distance is not equal to the second distance.
  • the control component can control the movement of the treatment head from the first position to the second position to distance the radiation source of the treatment head from the focus of the treatment head.
  • the first distance is adjusted to a second distance such that the distance between the source of the treatment head and the focus of the treatment head is adjustable. Therefore, the distance between the radiation source and the focus can be adjusted according to the radiation dose rate at the current focus, so that the radiation dose rate at the focus meets the dose rate requirement, and therefore, the treatment device provided by the embodiment of the present invention can be simultaneously applied to the treatment head. Tumors and body tumors.
  • FIG. 6 is a flow chart of a method for controlling a treatment head according to an embodiment of the present invention.
  • the control method of the treatment head can be used for a control component in a treatment device, as shown in FIG. Can include:
  • Step 601 Determine whether to treat the head tumor or the treatment of the body tumor according to the patient information. If the body tumor is treated, step 602 is performed. If the head tumor is treated, then step 603 is performed.
  • the patient information includes treatment information of the patient, and the treatment information of the patient may include: a tumor location, a tumor image of the patient, a treatment plan, and the like.
  • the treatment information of the patient may include: a tumor location, a tumor image of the patient, a treatment plan, and the like.
  • it may be determined that the tumor is located at the head or in the body, and it is determined whether radiation therapy needs to be performed in the first position or the second position.
  • the dose of the target area and the magnitude of the focus dose rate are determined according to the treatment plan, and it is determined whether radiation treatment needs to be performed in the first position or the second position.
  • step 602 is performed. If the head tumor is treated, it is necessary to perform radiation therapy at the second position W2, and step 603 is performed.
  • Step 602 Adjust the treatment head to the first position, and control the treatment head to treat the tumor lesion area where the focus of the treatment head is located.
  • the control assembly need not adjust the position of the treatment head; if the treatment head is in the second position or other position prior to step 602, the control assembly needs to control the treatment head Moving from the second position or other position to the first position adjusts the treatment head to the first position.
  • the control assembly can control the treatment head 01 to move to the first position W1 when determining that it is currently necessary to treat the body tumor.
  • the distance from the radiation source of the treatment head 01 to the focus A of the treatment head 01 is the first distance D1.
  • the control assembly can also adjust the collimation aperture of the treatment head 01 to a larger collimation aperture for the body tumor, the treatment head 01 can be used to treat areas of tumor lesions located in the body.
  • control component when the control component controls the tumor lesion area where the treatment head focuses on the treatment head, the control component can control the treatment head 01 to emit radiation to the focus, so that the treatment head 01 treats the tumor lesion area where the focus is located. .
  • the control assembly can also control the circumference of the treatment head 01 about the predetermined axis X to achieve rotational illumination treatment of the tumor lesion area.
  • the human body can lie on the treatment bed 03, and the predetermined axis X can pass through the human tumor. Therefore, when the treatment head 01 rotates around the preset axis X, the treatment head 01 also rotates around the human body.
  • the preset axis X may be the rotation axis of the drum 04 , and the treatment head 01 may be disposed on the inner wall of the drum 04 .
  • the control unit needs to control the rotation of the treatment head 01 about the predetermined axis X, it can be rotated by the control roller 04 about the predetermined axis X, so that the roller 04 drives the treatment head 01 to rotate around the preset axis X.
  • the treatment device may not include a roller.
  • the control component needs to control the circumference of the treatment head to rotate around the preset axis, the control component can drive the treatment head to rotate around the preset axis by a mechanical arm or other structural member. This example does not limit this.
  • control component when the control unit controls the treatment head to treat the tumor lesion area, the control component is not only
  • the treatment head 01 can be controlled to move circumferentially about a predetermined axis, and the control assembly can also control the treatment head 01 to pivot about at least one axis.
  • the treatment head can be pivoted about axis M1, or the treatment head can be pivoted about axis M2, or alternatively, the treatment head can be pivoted about axis M1 and axis M2.
  • the control component can not only control the rotation of the treatment head 01 about a predetermined axis, but also the treatment head can pivot about the axis, so that the treatment head 01 can emit radiation from different directions toward the tumor lesion area.
  • the treatment head pivoting may be at any position, for example, the treatment head is moved to the second position and can also pivot about at least one axis, and FIG. 4(a) is only exemplified by the treatment head being located at the first position W1.
  • the pivot axis of the treatment head is only control the rotation of the treatment head 01 about a predetermined axis, but also the treatment head can pivot about the axis, so that the treatment head 01 can emit radiation from different directions toward the tumor lesion area.
  • Step 603 Adjust the treatment head to the second position, and control the treatment head to treat the tumor lesion area where the focus of the treatment head is located.
  • the control assembly need not adjust the position of the treatment head; if the treatment head is at the first position or other position prior to step 603, the control assembly needs to control the treatment head Moving from the first position or other position to the second position adjusts the treatment head to the second position.
  • the control assembly can control the treatment head 01 to move to the second position W2 when it is determined that treatment of the head tumor is currently required.
  • the distance from the radiation source of the treatment head 01 to the focus A of the treatment head 01 is the second distance D2.
  • the control assembly can also adjust the collimation aperture of the treatment head 01 to a smaller collimation aperture suitable for treating the head tumor, so that The treatment head 01 can be adapted to treat a tumor lesion area located in the head.
  • control component when the control component controls the tumor lesion area where the treatment head focuses on the treatment head, the control component can control the treatment head 01 to emit radiation to the focus, so that the treatment head 01 treats the tumor lesion area where the focus is located. .
  • the control assembly can also control the circumference of the treatment head 01 about the predetermined axis X to achieve rotational illumination treatment of the tumor lesion area.
  • the human body can lie on the treatment bed 03, and the predetermined axis X can pass through the tumor of the head. Therefore, when the treatment head 01 rotates around the preset axis X, the treatment head 01 also rotates around the human body.
  • the preset axis X may be the rotation axis of the drum 04, and the treatment head 01 may be disposed on the inner wall of the drum 04.
  • the control unit needs to control the rotation of the treatment head 01 about the predetermined axis X, it can be rotated by the control roller 04 about the predetermined axis X, so that the roller 04 drives the treatment head 01 to rotate around the preset axis X.
  • the treatment device may not include a roller.
  • the control component needs to control the circumference of the treatment head to rotate around the preset axis, the control component can drive the treatment head to rotate around the preset axis by a mechanical arm or other structural member. This example does not limit this.
  • the control assembly can not only control the circular movement of the treatment head 01 about the predetermined axis, but the control assembly can also control the treatment head 01 to pivot about at least one axis. That is, in the embodiment of the present invention, the control component can not only control the rotation of the treatment head 01 about a predetermined axis, but also the treatment head can pivot about the axis, so that the treatment head 01 can emit radiation from different directions toward the tumor lesion area. In order to reduce the amount of radiation received on the unit area of the skin in the tumor lesion area, thereby preventing the skin of the tumor lesion area from being burned by the radiation, and reducing the skin to skin ratio of the tumor lesion area.
  • control component can control the movement of the treatment head in a plurality of achievable manners to adjust the treatment head to the first position or the second position.
  • the treatment device may further include a mechanical arm (not shown in FIG. 2), and the control assembly may clamp the treatment head 01 by controlling the mechanical arm and drive the treatment head 01 to move, thereby treating the treatment head 01. Adjusted to the first position W1 or the second position W2.
  • the treatment device can further include a slide rail, and the control assembly can control the treatment head to slide over the slide rail to move the treatment head from the first position to the second position.
  • the treatment device 0 may further include: a slide rail 02.
  • the control assembly can control the treatment head 01 to slide over the slide rails 02 to adjust the treatment head 01 to the first position W1 or the second position W2.
  • control method provided by the present application further includes:
  • Step 604 Obtain a first distance of the radiation source of the treatment head to the focus of the treatment head.
  • the determination of the first distance may be determined by the treating physician based on the patient's tumor condition and the dose required for the treatment.
  • Step 605 Determine a first location according to the first distance.
  • the first position may be It is the position of the treatment head as shown in Fig. 4(a).
  • the first position may be other positions, and details are not described herein again.
  • the method further includes:
  • Step 606 Obtain a second distance from the radiation source of the treatment head to the focus of the treatment head.
  • Step 607 Determine a second location according to the second distance.
  • the second distance is D2
  • the second position may be the position of the treatment head as shown in Figure 4(b).
  • the control component can control the movement of the treatment head from the first position to the second position to distance the radiation source of the treatment head from the focus of the treatment head.
  • the first distance is adjusted to a second distance such that the distance between the source of the treatment head and the focus of the treatment head is adjustable. Therefore, the distance between the radiation source and the focus can be adjusted according to the radiation dose rate at the current focus, so that the radiation dose rate at the focus meets the dose rate requirement, and therefore, the treatment device provided by the embodiment of the present invention can be simultaneously applied to the treatment head. Tumors and body tumors.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product comprising one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a readable storage medium of a computer or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data
  • the center transmits to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium, or a semiconductor medium (eg, a solid state hard disk) or the like.

Abstract

一种治疗装置(0)及其控制方法，涉及放射医疗技术领域，治疗装置(0)包括：治疗头(01)和控制组件，控制组件用于：控制治疗头(01)从第一位置(W1)运动至第二位置(W2)，且治疗头(01)的运动轨迹与在治疗头(01)运动前治疗头(01)的放射源到治疗头(01)的焦点(A)的连线不共线；其中，当治疗头(01)位于第一位置(W1)时，治疗头(01)的放射源到治疗头(01)的焦点(A)的距离为第一距离(D1)，当治疗头(01)位于第二位置(W2)时，治疗头(01)的放射源到治疗头(01)的焦点(A)的距离为第二距离(D2)，第一距离(D1)不等于第二距离(D2)。治疗装置(0)及其控制方法解决了放射治疗技术中体部治疗装置无法同时适用于治疗头部肿瘤和体部肿瘤的问题，实现了治疗装置(0)能够同时适用于治疗头部肿瘤和体部肿瘤的效果。

Description

治疗装置及治疗头的控制方法 技术领域
本发明涉及医疗技术领域，特别涉及一种治疗装置及治疗头的控制方法。
背景技术
在现代医学中，放射治疗是治疗肿瘤的一种重要手段。用于放射治疗的治疗装置可以包括治疗头，治疗头一般包括放射源和准直器，放射源发出的射线经过准直器进行束形后照射至肿瘤病灶区域，杀死肿瘤病灶区域的肿瘤细胞。
相关技术中，提供一种用于治疗体部(如胸腹部)肿瘤的体部治疗装置1(如图1所示)。人体位于容纳空间内，并将肿瘤与治疗头的焦点位置对应，治疗装置1中治疗头11要绕旋转轴Y旋转，以对肿瘤进行旋转照射治疗，则治疗头1的放射源到焦点的距离较大以便形成可容纳身体的旋转空间。而焦点处的剂量率与距离的平方成反比，即放射源到焦点的距离越大，焦点处的剂量率越小。但由于体部肿瘤一般较大，一般采用较大的准直孔径，则焦点的剂量率较大，因此，能够满足体部治疗的高剂量率要求。
人体肿瘤不仅包括体部肿瘤，还包括头部肿瘤，由于头部肿瘤的肿瘤病灶区域较小，且头部肿瘤的周围组织比较密集，一般需要采用较小的准直孔径，而体部治疗装置中治疗头的放射源到焦点的距离较大，在使用体部治疗装置对头部肿瘤进行治疗时，焦点处的剂量率较小，无法满足治疗头部肿瘤的高剂量率要求，因此，相关技术中的治疗装置一般包括头部治疗装置和体部治疗装置，并无治疗装置可同时适用于治疗头部肿瘤和体部肿瘤。
发明内容
为了解决相关技术中的治疗装置无法同时适用于治疗头部肿瘤和体部肿瘤的问题，本发明提供了一种治疗装置及治疗头的控制方法。所述技术方案如下：
第一方面，提供了一种治疗装置，所述治疗装置包括：治疗头和控制组件， 所述控制组件用于：
控制所述治疗头从第一位置运动至第二位置，且所述治疗头的运动轨迹与在所述治疗头运动前所述治疗头的放射源到所述治疗头的焦点的连线不共线；
其中，当所述治疗头位于所述第一位置时，所述治疗头的放射源到所述治疗头的焦点的距离为第一距离，当所述治疗头位于所述第二位置时，所述治疗头的放射源到所述治疗头的焦点的距离为第二距离，所述第一距离不等于所述第二距离。
可选的，所述治疗装置还包括：滑轨，所述控制组件还用于通过控制所述治疗头沿所述滑轨运动，以控制所述治疗头从第一位置运动至第二位置。
可选的，在所述治疗头位于所述第一位置时所述治疗头的焦点，与在所述治疗头位于所述第二位置时所述治疗头的焦点不存在位移；
或者，在所述治疗头位于所述第一位置时所述治疗头的焦点，与在所述治疗头位于所述第二位置时所述治疗头的焦点存在位移。
可选的，所述第一位置和所述第二位置在预设轴线的长度方向上存在位移，且在所述治疗头位于所述第一位置时所述治疗头的焦点，与在所述治疗头位于所述第二位置时所述治疗头的焦点，均位于所述预设轴线上。
可选的，所述第一位置和所述第二位置在预设轴线的长度方向上存在位移，所述控制组件还用于：
控制所述治疗头绕所述预设轴线圆周转动，以实现旋转照射治疗。
可选的，所述治疗装置还包括：滚筒，所述预设轴线为所述滚筒的旋转轴线，所述治疗头设置在所述滚筒的内壁上，
所述控制组件还用于通过控制所述滚筒绕所述预设轴线旋转，使得所述滚筒带动所述治疗头绕所述预设轴线圆周转动。
可选的，所述控制组件还用于控制所述治疗头绕至少一个轴枢转。
可选的，所述控制组件还用于：
获取所述治疗头的放射源到所述治疗头的焦点的所述第二距离；
根据所述第二距离确定所述第二位置。
第二方面，提供了一种治疗头的控制方法，所述方法包括：
控制所述治疗头从第一位置运动至第二位置，且所述治疗头的运动轨迹与在所述治疗头运动前所述治疗头的放射源到所述治疗头的焦点的连线不共线；
其中，当所述治疗头位于所述第一位置时，所述治疗头的放射源到所述治疗头的焦点的距离为第一距离，当所述治疗头位于所述第二位置时，所述治疗头的放射源到所述治疗头的焦点的距离为第二距离，所述第一距离不等于所述第二距离。
可选的，所述治疗头所在的治疗装置还包括：滑轨，所述控制所述治疗头从第一位置运动至第二位置，包括：
通过控制所述治疗头沿所述滑轨运动，以控制所述治疗头从第一位置运动至第二位置。
可选的，在所述治疗头位于所述第一位置时所述治疗头的焦点，与在所述治疗头位于所述第二位置时所述治疗头的焦点不存在位移；
或者，在所述治疗头位于所述第一位置时所述治疗头的焦点，与在所述治疗头位于所述第二位置时所述治疗头的焦点存在位移。
可选的，所述第一位置和所述第二位置在预设轴线的长度方向上存在位移，且在所述治疗头位于所述第一位置时所述治疗头的焦点，与在所述治疗头位于所述第二位置时所述治疗头的焦点，均位于所述预设轴线上。
可选的，所述第一位置和所述第二位置在预设轴线的长度方向上存在位移，所述方法还包括：
控制所述治疗头绕所述预设轴线圆周转动，以实现旋转照射治疗。
可选的，所述治疗头所在的治疗装置还包括：滚筒，所述预设轴线为所述滚筒的旋转轴线，所述治疗头设置在所述滚筒的内壁上，所述控制所述治疗头绕所述预设轴线圆周转动，包括：
通过控制所述滚筒绕所述预设轴线旋转，使得所述滚筒带动所述治疗头绕所述预设轴线圆周转动。
可选的，所述方法还包括：
控制所述治疗头绕至少一个轴枢转。
可选的，在所述控制所述治疗头从第一位置运动至第二位置之前，所述方法还包括：
获取所述治疗头的放射源到所述治疗头的焦点的所述第二距离；
根据所述第二距离确定所述第二位置。
第三方面，提供了一种计算机可读存储介质，所述存储介质内存储有计算 机程序，所述计算机程序被处理器执行时实现第一方面所述的方法。
本发明提供的技术方案的有益效果是：
本发明提供的治疗装置中，控制组件能够控制治疗头从第一位置运动至第二位置，以将治疗头的放射源与治疗头的焦点的距离从第一距离调整为第二距离，使得治疗头的放射源与治疗头的焦点的距离可调整。从而可以根据当前焦点处的射线剂量率的多少调整射线源与焦点的距离，以使得焦点处的射线剂量率满足剂量率要求，因此，本发明实施例提供的治疗装置能够同时适用于治疗头部肿瘤和体部肿瘤。
附图说明
图1为相关技术提供的一种治疗装置的结构示意图；
图2为本发明实施例提供的一种治疗装置的结构示意图；
图3为本发明实施例提供的另一种治疗装置的结构示意图；
图4(a)为本发明实施例提供的又一种治疗装置的结构示意图；
图4(b)为本发明实施例提供的再一种治疗装置的结构示意图；
图5为本发明实施例提供的一种治疗头的控制方法的方法流程图；
图6为本发明实施例提供的另一种治疗头的控制方法的方法流程图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。
图2为本发明实施例提供的一种治疗装置的结构示意图，如图2所示，该治疗装置0可以包括：治疗头01和控制组件(图2中未示出)，控制组件可以用于：
控制治疗头01从第一位置W1运动至第二位置W2，且治疗头01的运动轨迹与在治疗头01运动前治疗头01的放射源到治疗头01的焦点A的连线不共线。
其中，当治疗头01位于第一位置W1时，治疗头01的放射源到治疗头01的焦点A的距离为第一距离D1，当治疗头01位于第二位置W2时，治疗头01的放射源到治疗头01的焦点A的距离为第二距离D2，第一距离D1不等于 第二距离D2。
需要说明的是，图2中以第一距离D1大于第二距离D2为例，实际应用中，第一距离D1还可以小于第二距离D2。
治疗头01的运动轨迹与在治疗头01运动前治疗头01的放射源到治疗头01的焦点A的连线不共线，即治疗头的运动方向与放射源的射线出束方向不同。示例的，如图1所示，以放疗设备为滚筒为例，放射源沿滚筒的径向发出射束，则治疗头可以是沿滚筒的轴向运动，以从第一位置运动至第二位置。
综上所述，本发明实施例提供的治疗装置中，控制组件能够控制治疗头从第一位置运动至第二位置，以将治疗头的放射源与治疗头的焦点的距离从第一距离调整为第二距离，使得治疗头的放射源与治疗头的焦点的距离可调整。从而可以根据当前焦点处的射线剂量率的多少调整射线源与焦点的距离，以使得焦点处的射线剂量率满足剂量率要求，因此，本发明实施例提供的治疗装置能够同时适用于治疗头部肿瘤和体部肿瘤。
需要说明的是，当治疗头为钴-60(一种放射性同位素)治疗头时，钴-60治疗头的放射源到焦点的距离也即是钴-60到焦点的距离。当治疗头为加速器治疗头时，加速器治疗头是通过电子打击金属靶以发射出X射线，加速器治疗头的放射源到焦点的距离可以是金属靶到治疗时靶点的距离。
示例的，人体各个部位的肿瘤病灶区域较不相同，例如，位于体部的肿瘤病灶区域通常大于位于头部的肿瘤病灶区域，且头部的神经细胞数量远远多于其他部位的神经细胞。在对每个部位的肿瘤病灶区域治疗时，需要根据每个部位的肿瘤病灶区域的特点，对治疗头进行调整。
请继续参考图2，在控制组件控制治疗头01运动前，治疗头01位于第一位置，此时，治疗头01的放射源与焦点A的距离为较大的第一距离D1，焦点A处的准直孔径可以为较大的第一准直孔径(图2中未示出)，该治疗头01可以适用于治疗位于体部的肿瘤病灶区域。在控制组件控制治疗头01运动后，治疗头01位于第二位置，此时，治疗头01的放射源与焦点A的距离为较小的第二距离D2，当采用较小的准直孔径进行聚焦，可使得在焦点的剂量率满足头部肿瘤治疗的高剂量率要求，从而该治疗头01可以适用于治疗位于头部的肿瘤病灶区域。
进一步的，控制组件在控制治疗头01从第一位置W1运动至第二位置W2 之前，控制组件还可以确定当前待治疗的肿瘤病灶区域，并根据当前待治疗的肿瘤病灶区域的特征，获取治疗头的放射源到治疗头的焦点的第二距离，进而根据该第二距离确定治疗头需要位于的第二位置。然后，控制组件就可以控制该治疗头01运动至第二位置W2，从而使得在治疗头位于第二位置W2时，治疗头的放射源到焦点的距离为第二距离。
示例的，本发明实施例中控制组件可以通过多种可实现方式控制治疗头运动，以使得治疗头从第一位置运动至第二位置。
在第一种可实现方式中，治疗装置还可以包括机械臂(图2中未示出)，控制组件可以通过控制机械臂夹持治疗头01，并带动治疗头01运动，从而使得治疗头01从第一位置W1运动至第二位置W2。
在第二种可实现方式中，治疗装置还可以包括滑轨，控制组件可以控制治疗头在滑轨上滑动，从而使治疗头从第一位置运动至第二位置。示例的，图3为本发明实施例提供的另一种治疗装置的结构示意图，图4(a)为本发明实施例提供的又一种治疗装置的结构示意图，图4(b)为本发明实施例提供的再一种治疗装置的结构示意图。请参考图3、图4(a)或图4(b)，在图1的基础上，该治疗装置0还可以包括：滑轨02。控制组件可以控制治疗头01在滑轨02上滑动，以使得治疗头01从第一位置W1运动至第二位置W2。需要说明的是，图3、图4(a)和图4(b)中仅是示例性的示出了滑轨02的形状，实际应用中，该滑轨02的形状也可以不为图3、图4(a)和图4(b)所示的形状，如直线形状，或者其他不规则形状，本发明实施例对此不作限定。
可选的，如图3所示，在治疗头01位于第一位置W1时治疗头01的焦点A，与在治疗头01位于第二位置W2时治疗头01的焦点A存在位移。也即是，在治疗头01运动前治疗头01的焦点A的位置，与在治疗头01运动后治疗头01的焦点A的位置不同。
示例的，该治疗装置还可以包括治疗床03。当治疗头01位于第一位置W1时，治疗头01能够用于治疗位于体部的肿瘤病灶区域。在人体躺在治疗床03上后，控制组件需要控制治疗床03进行移动，使得治疗头01的焦点落在位于体部的肿瘤病灶区域B。当治疗头01位于第二位置W2时，治疗头01能够 用于治疗头部肿瘤。在人体躺在治疗床03上后，控制组件需要控制治疗床03进行移动，使得治疗头01的焦点落在位于头部的肿瘤病灶区域C中。
且由于在图3所示的场景中，治疗头01在从第一位置W1运动至第二位置W2后，治疗头01的焦点的位置不同，因此，在分别对位于头部的肿瘤病灶区域和位于体部的肿瘤病灶区域进行治疗时，位于头部的肿瘤病灶区域和位于体部的肿瘤病灶区域的位置不同。如图3所示，以肿瘤病灶区域包括位于同一人体的体部和头部为例，在实际应用中，体部肿瘤和头部肿瘤也可以为不同患者的肿瘤，本申请仅以图3所示进行举例说明。
可选的，如图4(a)和图4(b)所示，在治疗头01位于第一位置W1时治疗头01的焦点A，与在治疗头01位于第二位置W2时治疗头01的焦点A不存在位移。也即是，在治疗头01运动前治疗头01的焦点A的位置，与在治疗头01运动后治疗头01的焦点A的位置相同。
示例的，该治疗装置还可以包括治疗床03。如图4(a)所示，当治疗头01位于第一位置W1时，治疗头01能够用于治疗体部肿瘤，则在人体躺在治疗床03上后，控制组件需要控制治疗床03进行移动，使得治疗头01的焦点落在位于体部的肿瘤病灶区域B，此时焦点可以为设备的等中心点。如图4(b)所示，当治疗头01位于第二位置W2时，治疗头01能够用于治疗头部肿瘤，则在人体躺在治疗床03上后，控制组件需要控制治疗床03进行移动，以使得治疗头01的焦点落在位于头部的肿瘤病灶区域C中，此时焦点为设备的等中心点。
由于在图4(a)和图4(b)所示的场景中，治疗头01在从第一位置W1运动至第二位置W2后，治疗头01的焦点A的位置并未发生改变，即治疗头的焦点仍然为设备的等中心点，因此，在分别对位于头部的肿瘤病灶区域和位于体部的肿瘤病灶区域进行治疗时，位于头部的肿瘤病灶区域和位于体部的肿瘤病灶区域的在治疗时均位于等中心，可以避免对焦点、等中心点以及肿瘤进行多次定位。图4(a)和图4(b)中以肿瘤分别位于人体的体部和头部为例，在实际应用中，体部肿瘤和头部肿瘤为不同患者，本申请仅以图4(a)和图4(b)所示进行举例说明。
如图3、图4(a)和图4(b)所示，本申请提供的一种可实施方式中，在治疗头01位于第一位置W1时治疗头01的焦点A，与在治疗头01位于第二 位置W2时治疗头01的焦点A，均位于预设轴线X上。从而在治疗头绕预设轴线X旋转时，治疗头的焦点能够始终对准肿瘤。此外，无论控制组件在控制治疗头从第一位置移动至第二位置的过程中，治疗头的焦点的位置是否发生变化，第一位置W1和第二位置W2在预设轴线X的长度方向上均存在位移。
在治疗头01从第一位置W1运动至第二位置W2后，控制组件还可以用于控制治疗头01的射线源向焦点发出射线，从而使得治疗头01对焦点所在的肿瘤病灶区域进行治疗。进一步的，在治疗头01发出射线时，控制组件还可以用于控制治疗头01绕预设轴线X圆周转动，以实现对肿瘤病灶区域的旋转照射治疗。示例的，人体可以躺在治疗床03上，该预设轴线X可以为经过人体肿瘤的轴线，因此，在治疗头01绕预设轴线X圆周转动时，治疗头01绕人体也做圆周转动，从而使得焦点始终位于人体肿瘤上，以杀死肿瘤细胞。
如图3、图4(a)和图4(b)所示，该治疗装置0还可以包括：滚筒04，预设轴线X可以为滚筒04的旋转轴线。需要说明的是，图3、图4(a)和图4(b)均示出了滚筒04的侧视图。控制组件在需要控制治疗头01绕预设轴线X转动时，可以通过控制滚筒04绕预设轴线X旋转，使得滚筒04带动治疗头01绕预设轴线X圆周转动。实际应用中，治疗装置也可以不包括滚筒，在控制组件需要控制治疗头绕预设轴线圆周转动时，控制组件可以通过机械臂(例如C形臂)或其他结构件带动治疗头绕预设轴线圆周转动，本发明实施例对此也不作限定。
另外，控制组件不仅能够控制治疗头01绕预设轴线圆周运动，该控制组件还可以控制治疗头01绕至少一条轴线进行枢转，示例的，如图4(a)所示，治疗头可以绕轴M1枢转，或者，治疗头可以绕轴M2枢转，再或者，治疗头可以绕轴M1和轴M2枢转。也即是，本发明实施例中控制组件不仅可以控制治疗头01绕预设轴线旋转转动，治疗头还可以绕轴进行枢转，从而使得治疗头01能够从不同的方向朝向肿瘤病灶区域发出射线，以减少肿瘤病灶区域的皮肤单位面积上接收到的射线量，进而避免肿瘤病灶区域的皮肤被射线照射后焦灼，降低肿瘤病灶区域的皮肤的焦皮比。本申请中，治疗头枢转可以是在任何一个位置处，例如治疗头运动至第二位置也可以绕至少一条轴枢转，图4(a)仅以治疗头位于第一位置W1处为例示出治疗头的枢转轴。
如图3、图4(a)和图4(b)所示，该治疗装置0还可以包括：电子射野影像组件05，治疗头01和电子射野影像组件05均可以设置在滚筒04的内壁，且电子射野影像组件05与治疗头01相对设置，电子射野影像组件05可以用于接收治疗头01发出的射线。可选的，该电子射野影像组件05在滚筒内的设置位置也可以移动，该电子射野影像组件05还可以根据接收到的射线进行成像，或者，根据接收到的射线确定病灶区接收到的射线的剂量。
可选的，该治疗装置0还可以包括影像装置，该影像装置可以是锥形束计算机断层扫描(英文：Cone beam Computer Tomography；简称：CBCT)装置，影像装置包括：球管(附图中未示出)和探测器(附图中未示出)，球管和探测器均可以设置在滚筒04的内壁，且探测器与球管相对设置，当人体躺在治疗床上时，人体可以位于探测器与球管之间。球管用于向探测器发出射线，探测器用于接收球管发出射线。也即是，在治疗头01对人体的肿瘤病灶区域发出射线的过程中，还可以控制该球管向探测器发出射线，从而使得探测器根据接收到的射线，确定在肿瘤病灶区域被治疗的过程中，肿瘤的运动变化情况。示例的，该球管和探测器在滚筒04上的设置位置均可调整。
如图3、图4(a)和图4(b)所示，该治疗装置0还可以包括：防辐射组件06，该防辐射组件06可以设置在滚筒04的内壁，且防辐射组件06与治疗头01相对设置。防辐射组件06可以用于吸收治疗头01发出的射线，从而减少周围环境中的射线剂量。另外，由于治疗头01通常较重，在治疗头01的对侧设置该防辐射组件06能够有效的平衡在治疗头01转动过程中滚筒04的受力。示例的，该防辐射组件06可以为铅块或铁块。
可选的，本发明实施例提供的治疗装置中可以包括一个治疗头(图2、图3、图4(a)和图4(b)中均以治疗装置包括一个治疗头为例)，或者多个治疗头；治疗头可以为聚焦型治疗头(图2、图3、图4(a)和图4(b)均以治疗头为聚焦型治疗头为例)、适形治疗头或者其他治疗头，治疗头发出的射线可以为：X射线、中子射线、质子射线或钴-60发出的伽马射线，或者其他能够杀死肿瘤细胞的射线；本发明实施例对此均不作限定。
综上所述，由于本发明实施例提供的治疗装置中，控制组件能够控制治疗头从第一位置运动至第二位置，以将治疗头的放射源与治疗头的焦点的距离从第一距离调整为第二距离，使得治疗头的放射源与治疗头的焦点的距离可调 整。从而可以根据当前焦点处的射线剂量率的多少调整射线源与焦点的距离，以使得焦点处的射线剂量率满足剂量率要求，因此，本发明实施例提供的治疗装置能够同时适用于治疗头部肿瘤和体部肿瘤。
图5为本发明实施例提供的一种治疗头的控制方法的方法流程图，该治疗头的控制方法可以用于治疗装置中的控制组件，如图5所示，该治疗头的控制方法可以包括：
步骤501、控制治疗头从第一位置运动至第二位置，且治疗头的运动轨迹与在治疗头运动前治疗头的放射源到治疗头的焦点的连线不共线；其中，当治疗头位于第一位置时，治疗头的放射源到治疗头的焦点的距离为第一距离，当治疗头位于第二位置时，治疗头的放射源到治疗头的焦点的距离为第二距离，第一距离不等于第二距离。
综上所述，由于本发明实施例提供的治疗头的控制方法中，控制组件能够控制治疗头从第一位置运动至第二位置，以将治疗头的放射源与治疗头的焦点的距离从第一距离调整为第二距离，使得治疗头的放射源与治疗头的焦点的距离可调整。从而可以根据当前焦点处的射线剂量率的多少调整射线源与焦点的距离，以使得焦点处的射线剂量率满足剂量率要求，因此，本发明实施例提供的治疗装置能够同时适用于治疗头部肿瘤和体部肿瘤。
图6为本发明实施例提供的另一种治疗头的控制方法的方法流程图，该治疗头的控制方法可以用于治疗装置中的控制组件，如图6所示，该治疗头的控制方法可以包括：
步骤601、根据患者信息，确定为头部肿瘤治疗，还是为体部肿瘤治疗。若为体部肿瘤治疗，则执行步骤602。若为头部肿瘤治疗，则行步骤603。
患者信息包括患者的治疗信息，患者的治疗信息可以包括：肿瘤位置、患者的肿瘤图像、治疗计划等。在步骤601中，可以根据患者的信息，确定肿瘤位于头部或位于体部，确定需要在第一位置还是第二位置进行放射治疗。或者，根据治疗计划确定靶区的剂量及焦点剂量率的大小等，确定需要在第一位置还是第二位置进行放射治疗。
以图3、图4(a)和图4(b)所示为例，若为体部肿瘤治疗，需要在第一 位置W1进行放射治疗，则执行步骤602。若为头部肿瘤治疗，需要在第二位置W2进行放射治疗，则执行步骤603。
步骤602、调整治疗头至第一位置处，控制治疗头对治疗头的焦点所在的肿瘤病灶区域进行治疗。
若在步骤602之前，治疗头位于第一位置处，则控制组件无需对治疗头的位置进行调整；若在步骤602之前，治疗头位于第二位置或其他位置处，则控制组件需要控制治疗头从第二位置或其他位置运动至第一位置，从而将治疗头调整至第一位置处。
如图3或图4(a)所示，在确定当前需要对体部肿瘤进行治疗时，控制组件可以控制治疗头01移动至第一位置W1。当治疗头01位于第一位置W1时，治疗头01的放射源到治疗头01的焦点A的距离为第一距离D1。此时，治疗头01的放射源到治疗头01的焦点A的距离较大，控制组件还可以将治疗头01的准直孔径调整为适应体部肿瘤的较大的准直孔径，该治疗头01可以适用于治疗位于体部的肿瘤病灶区域。
可选的，控制组件在控制治疗头对治疗头的焦点所在的肿瘤病灶区域进行治疗时，控制组件可以控制治疗头01向焦点发出射线，从而使得治疗头01对焦点所在的肿瘤病灶区域进行治疗。
进一步的，在治疗头01位于第一位置W1时，治疗头01的焦点A可以位于预设轴线X上。在治疗头01向焦点发出射线时，控制组件还可以控制治疗头01绕预设轴线X圆周转动，以实现对肿瘤病灶区域的旋转照射治疗。示例的，此时人体可以躺在治疗床03上，该预设轴线X可以经过人体肿瘤，因此，在治疗头01绕预设轴线X圆周转动时，治疗头01绕人体也做圆周转动。
请继续参考图3或图4(a)，预设轴线X可以为滚筒04的旋转轴线，治疗头01可以设置在滚筒04的内壁上。控制组件在需要控制治疗头01绕预设轴线X转动时，可以通过控制滚筒04绕预设轴线X旋转，使得滚筒04带动治疗头01绕预设轴线X圆周转动。实际应用中，治疗装置也可以不包括滚筒，在控制组件需要控制治疗头绕预设轴线圆周转动时，控制组件可以通过机械臂或其他结构件带动治疗头绕预设轴线圆周转动，本发明实施例对此也不作限定。
另外，在控制组件控制治疗头对肿瘤病灶区域进行治疗时，控制组件不仅 能够控制治疗头01绕预设轴线圆周运动，该控制组件还可以控制治疗头01绕至少一条轴线进行枢转。示例的，如图4(a)所示，治疗头可以绕轴M1枢转，或者，治疗头可以绕轴M2枢转，再或者，治疗头可以绕轴M1和轴M2枢转。也即是，本发明实施例中控制组件不仅可以控制治疗头01绕预设轴线旋转转动，治疗头还可以绕轴进行枢转，从而使得治疗头01能够从不同的方向朝向肿瘤病灶区域发出射线，以减少肿瘤病灶区域的皮肤单位面积上接收到的射线量，进而避免肿瘤病灶区域的皮肤被射线照射后焦灼，降低肿瘤病灶区域的皮肤的焦皮比。本申请中，治疗头枢转可以是在任何一个位置处，例如治疗头运动至第二位置也可以绕至少一条轴枢转，图4(a)仅以治疗头位于第一位置W1处为例示出治疗头的枢转轴。
步骤603、调整治疗头至第二位置处，控制治疗头对治疗头的焦点所在的肿瘤病灶区域进行治疗。
若在步骤603之前，治疗头位于第二位置处，则控制组件无需对治疗头的位置进行调整；若在步骤603之前，治疗头位于第一位置或其他位置处，则控制组件需要控制治疗头从第一位置或其他位置运动至第二位置，从而将治疗头调整至第二位置处。
如图3或图4(b)所示，在确定当前需要对头部肿瘤进行治疗时，控制组件可以控制治疗头01移动至第二位置W2。当治疗头01位于第二位置W2时，治疗头01的放射源到治疗头01的焦点A的距离为第二距离D2。此时，治疗头01的放射源到治疗头01的焦点A的距离较小，控制组件还可以将治疗头01的准直孔径调整为适用于治疗头部肿瘤的较小的准直孔径，使得该治疗头01可以适用于治疗位于头部的肿瘤病灶区域。
可选的，控制组件在控制治疗头对治疗头的焦点所在的肿瘤病灶区域进行治疗时，控制组件可以控制治疗头01向焦点发出射线，从而使得治疗头01对焦点所在的肿瘤病灶区域进行治疗。
进一步的，在治疗头01位于第二位置W2时，治疗头01的焦点A可以位于预设轴线X上。在治疗头01向焦点发出射线时，控制组件还可以控制治疗头01绕预设轴线X圆周转动，以实现对肿瘤病灶区域的旋转照射治疗。示例的，此时人体可以躺在治疗床03上，该预设轴线X可以经过头部肿瘤，因此，在治疗头01绕预设轴线X圆周转动时，治疗头01绕人体也做圆周转动。
请继续参考图3或图4(b)，预设轴线X可以为滚筒04的旋转轴线，治疗头01可以设置在滚筒04的内壁上。控制组件在需要控制治疗头01绕预设轴线X转动时，可以通过控制滚筒04绕预设轴线X旋转，使得滚筒04带动治疗头01绕预设轴线X圆周转动。实际应用中，治疗装置也可以不包括滚筒，在控制组件需要控制治疗头绕预设轴线圆周转动时，控制组件可以通过机械臂或其他结构件带动治疗头绕预设轴线圆周转动，本发明实施例对此也不作限定。
另外，在控制组件控制治疗头对肿瘤病灶区域进行治疗时，控制组件不仅能够控制治疗头01绕预设轴线圆周运动，该控制组件还可以控制治疗头01绕至少一条轴线进行枢转。也即是，本发明实施例中控制组件不仅可以控制治疗头01绕预设轴线旋转转动，治疗头还可以绕轴进行枢转，从而使得治疗头01能够从不同的方向朝向肿瘤病灶区域发出射线，以减少肿瘤病灶区域的皮肤单位面积上接收到的射线量，进而避免肿瘤病灶区域的皮肤被射线照射后焦灼，降低肿瘤病灶区域的皮肤的焦皮比。
需要说明的是，本发明实施例中控制组件可以通过多种可实现方式控制治疗头运动，以将治疗头调整至第一位置或者第二位置。
在第一种可实现方式中，治疗装置还可以包括机械臂(图2中未示出)，控制组件可以通过控制机械臂夹持治疗头01，并带动治疗头01运动，从而将治疗头01调整至第一位置W1或第二位置W2。
在第二种可实现方式中，治疗装置还可以包括滑轨，控制组件可以控制治疗头在滑轨上滑动，从而使治疗头从第一位置运动至第二位置。请参考图3、图4(a)或图4(b)，在图1的基础上，该治疗装置0还可以包括：滑轨02。控制组件可以控制治疗头01在滑轨02上滑动，从而将治疗头01调整至第一位置W1或第二位置W2。
此外，本申请提供的控制方法，在上述步骤602之前，还包括：
步骤604、获取治疗头的放射源到治疗头的焦点的第一距离。
示例的，第一距离的确定，可以是由治疗医师根据患者的肿瘤情况以及治疗所需的剂量确定的。
步骤605、根据第一距离确定第一位置。
根据第一距离确定第一位置，示例的，第一距离为D1，则第一位置可以 是如图4(a)所示的治疗头的位置。当然，第一距离在不等于D1的情况下，第一位置还可以是其他位置，这里不再赘述。
同理，在上述步骤603之前，还包括：
步骤606、获取治疗头的放射源到治疗头的焦点的第二距离。
步骤607、根据第二距离确定第二位置。
示例的，第二距离为D2，则第二位置可以是如图4(b)所示的治疗头的位置。
综上所述，由于本发明实施例提供的治疗头的控制方法中，控制组件能够控制治疗头从第一位置运动至第二位置，以将治疗头的放射源与治疗头的焦点的距离从第一距离调整为第二距离，使得治疗头的放射源与治疗头的焦点的距离可调整。从而可以根据当前焦点处的射线剂量率的多少调整射线源与焦点的距离，以使得焦点处的射线剂量率满足剂量率要求，因此，本发明实施例提供的治疗装置能够同时适用于治疗头部肿瘤和体部肿瘤。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现，所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机的可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线)或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质，或者半导体介质(例如固态硬盘)等。
需要说明的是，本发明实施例提供的方法实施例与装置实施例可以互相参考。本发明实施例提供的方法实施例步骤的先后顺序能够进行适当调整，步骤 也能够根据情况进行相应增减，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，可轻易想到变化的方法，都应涵盖在本发明的保护范围之内，因此不再赘述。
以上所述仅为本发明的可选实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (17)

  1. 一种治疗装置，其特征在于，所述治疗装置包括：治疗头和控制组件，所述控制组件用于：
    控制所述治疗头从第一位置运动至第二位置，且所述治疗头的运动轨迹与在所述治疗头运动前所述治疗头的放射源到所述治疗头的焦点的连线不共线；
    其中，当所述治疗头位于所述第一位置时，所述治疗头的放射源到所述治疗头的焦点的距离为第一距离，当所述治疗头位于所述第二位置时，所述治疗头的放射源到所述治疗头的焦点的距离为第二距离，所述第一距离不等于所述第二距离。
  2. 根据权利要求1所述的治疗装置，其特征在于，所述治疗装置还包括：滑轨，
    所述控制组件还用于通过控制所述治疗头沿所述滑轨运动，以控制所述治疗头从第一位置运动至第二位置。
  3. 根据权利要求1所述的治疗装置，其特征在于，
    在所述治疗头位于所述第一位置时所述治疗头的焦点，与在所述治疗头位于所述第二位置时所述治疗头的焦点不存在位移；
    或者，在所述治疗头位于所述第一位置时所述治疗头的焦点，与在所述治疗头位于所述第二位置时所述治疗头的焦点存在位移。
  4. 根据权利要求3所述的治疗装置，其特征在于，
    所述第一位置和所述第二位置在预设轴线的长度方向上存在位移，且在所述治疗头位于所述第一位置时所述治疗头的焦点，与在所述治疗头位于所述第二位置时所述治疗头的焦点，均位于预设轴线上。
  5. 根据权利要求1所述的治疗装置，其特征在于，所述第一位置和所述第二位置在预设轴线的长度方向上存在位移，所述控制组件还用于：
    控制所述治疗头绕所述预设轴线圆周转动，以实现旋转照射治疗。
  6. 根据权利要求5所述的治疗装置，其特征在于，所述治疗装置还包括：滚筒，所述预设轴线为所述滚筒的旋转轴线，所述治疗头设置在所述滚筒的内壁上，
    所述控制组件还用于通过控制所述滚筒绕所述预设轴线旋转，使得所述滚筒带动所述治疗头绕所述预设轴线圆周转动。
  7. 根据权利要求1所述的治疗装置，其特征在于，
    所述控制组件还用于控制所述治疗头绕至少一个轴枢转。
  8. 根据权利要求1所述的治疗装置，其特征在于，所述控制组件还用于：
    获取所述治疗头的放射源到所述治疗头的焦点的所述第二距离；
    根据所述第二距离确定所述第二位置。
  9. 一种治疗头的控制方法，其特征在于，所述方法包括：
    控制所述治疗头从第一位置运动至第二位置，且所述治疗头的运动轨迹与在所述治疗头运动前所述治疗头的放射源到所述治疗头的焦点的连线不共线；
    其中，当所述治疗头位于所述第一位置时，所述治疗头的放射源到所述治疗头的焦点的距离为第一距离，当所述治疗头位于所述第二位置时，所述治疗头的放射源到所述治疗头的焦点的距离为第二距离，所述第一距离不等于所述第二距离。
  10. 根据权利要求9所述的方法，其特征在于，所述治疗头所在的治疗装置还包括：滑轨，所述控制所述治疗头从第一位置运动至第二位置，包括：
    通过控制所述治疗头沿所述滑轨运动，以控制所述治疗头从第一位置运动至第二位置。
  11. 根据权利要求9所述的方法，其特征在于，
    在所述治疗头位于所述第一位置时所述治疗头的焦点，与在所述治疗头位于所述第二位置时所述治疗头的焦点不存在位移；
    或者，在所述治疗头位于所述第一位置时所述治疗头的焦点，与在所述治疗头位于所述第二位置时所述治疗头的焦点存在位移。
  12. 根据权利要求11所述的方法，其特征在于，
    所述第一位置和所述第二位置在预设轴线的长度方向上存在位移，且在所述治疗头位于所述第一位置时所述治疗头的焦点，与在所述治疗头位于所述第二位置时所述治疗头的焦点，均位于所述预设轴线上。
  13. 根据权利要求9所述的方法，其特征在于，所述第一位置和所述第二位置在预设轴线的长度方向上存在位移，所述方法还包括：
    控制所述治疗头绕所述预设轴线圆周转动，以实现旋转照射治疗。
  14. 根据权利要求13所述的方法，其特征在于，所述治疗头所在的治疗装置还包括：滚筒，所述预设轴线为所述滚筒的旋转轴线，所述治疗头设置在所述滚筒的内壁上，所述控制所述治疗头绕所述预设轴线圆周转动，包括：
    通过控制所述滚筒绕所述预设轴线旋转，使得所述滚筒带动所述治疗头绕所述预设轴线圆周转动。
  15. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    控制所述治疗头绕至少一个轴枢转。
  16. 根据权利要求9所述的方法，其特征在于，在所述控制所述治疗头从第一位置运动至第二位置之前，所述方法还包括：
    获取所述治疗头的放射源到所述治疗头的焦点的所述第二距离；
    根据所述第二距离确定所述第二位置。
  17. 一种计算机可读存储介质，其特征在于，所述存储介质内存储有计算机程序，所述计算机程序被处理器执行时实现权利要求9-16任一所述的方法。
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