WO2020244146A1 - Lit de radiothérapie doté d'une fonction de mesure de dose - Google Patents

Lit de radiothérapie doté d'une fonction de mesure de dose Download PDF

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Publication number
WO2020244146A1
WO2020244146A1 PCT/CN2019/117012 CN2019117012W WO2020244146A1 WO 2020244146 A1 WO2020244146 A1 WO 2020244146A1 CN 2019117012 W CN2019117012 W CN 2019117012W WO 2020244146 A1 WO2020244146 A1 WO 2020244146A1
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WO
WIPO (PCT)
Prior art keywords
guide rail
dose
measuring device
dose measurement
bed
Prior art date
Application number
PCT/CN2019/117012
Other languages
English (en)
Chinese (zh)
Inventor
甄永杰
姚毅
Original Assignee
苏州雷泰医疗科技有限公司
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
Priority claimed from CN201910478795.XA external-priority patent/CN110141802A/zh
Priority claimed from CN201920827098.6U external-priority patent/CN211327832U/zh
Application filed by 苏州雷泰医疗科技有限公司 filed Critical 苏州雷泰医疗科技有限公司
Publication of WO2020244146A1 publication Critical patent/WO2020244146A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy

Definitions

  • the present invention relates to the technical field of medical equipment, in particular to a radiotherapy bed with a dose measurement function.
  • the current dose measurement devices of medical linear accelerators are all set in the treatment head, and can only be used to monitor the total dose of the high-energy radiation emitted from the radiation source through the primary collimator.
  • the high-energy rays passing through the primary collimator to the dose measuring device will be blocked by the secondary collimator in the treatment head and part of the dose will be blocked by the secondary collimator, so that the true dose reaching the patient's body surface cannot be accurately measured.
  • the purpose of the present invention is to provide a radiotherapy bed with a dose measurement function in order to solve the problem that the true dose reaching the surface of the patient's body cannot be accurately measured during radiotherapy.
  • the present invention provides a radiation therapy bed with dose measurement function, which includes a therapy bed surface, a guide rail and a dose measuring device.
  • the guide rail is arranged under the radiation irradiation area of the treatment bed surface.
  • the dose measuring device is arranged on the guide rail. The first guide rail and the second guide rail move relative to each other, so that the dose measuring device can move two-dimensionally along the guide rail under the radiation irradiation area.
  • the material of the guide rail is a non-metallic material
  • the first guide rail is a linear guide rail extending in a first direction
  • the second guide rail is a linear guide rail extending in a second direction
  • the first direction intersects the second direction
  • the first direction and the second direction are perpendicular to each other.
  • the shape of the radiation irradiation zone is rectangular
  • the first guide rail is fixedly arranged along one side of the radiation irradiation zone
  • one end of the second guide rail is arranged on the first guide rail to be able to move along the first guide rail
  • the dose measuring device is arranged on the first guide rail. On the second rail.
  • the length of the first guide rail is the same as the length of one side of the radiation irradiated area
  • the length of the second guide rail is the same as the length of the other side of the radiation irradiated area perpendicular to the one side.
  • the first guide rail is fixedly arranged along the longer side of the radiation irradiation area.
  • the radiotherapy bed further includes a controller, and the guide rail and the dose measuring device are respectively electrically connected to the controller, and the controller is used to control the movement of the guide rail and the dose measuring device.
  • the controller acquires the center position of the radiation irradiation area before starting the treatment, and controls the guide rail and the dose measuring device to move the dose measuring device to the center position.
  • the dose measuring device measures the dose irradiated to the patient at the center position in a static state until a new treatment field is replaced.
  • the controller obtains dynamic treatment information during treatment, and controls the movement of the dose measuring device according to the dynamic treatment information to maintain the center position of the dynamic field, thereby measuring the dynamic treatment method In case of exposure to the patient's dose.
  • the radiation therapy bed with dose measurement function proposed by the present invention includes a therapy bed surface, a guide rail and a dose measuring device.
  • the guide rail is arranged under the radiation area of the treatment bed surface.
  • the dose measuring device is arranged on the guide rail.
  • the first guide rail and the second guide rail so that the dose measuring device can make a two-dimensional movement along the guide rail under the radiation area.
  • the dose measuring device can make two-dimensional movement under the radiation exposure area, so the dose measuring device can measure the dose to the patient at the desired position.
  • the obstruction of the treatment bed to the rays can be obtained experimentally, so the real dose to the patient's body can be derived from the measurement data, thereby improving the accuracy of dose measurement in radiotherapy.
  • Figure 1 shows a schematic structural diagram of a radiation therapy bed with a dose measurement function provided by an embodiment of the present invention
  • Fig. 2 shows a schematic structural diagram of a radiation therapy bed with a dose measurement function provided by another embodiment of the present invention.
  • horizontal does not mean that the component is required to be absolutely horizontal or overhang, but may be slightly inclined.
  • horizontal only means that its direction is more horizontal than “vertical”, it does not mean that the structure must be completely horizontal, but can be slightly inclined.
  • the current dose measurement devices of medical linear accelerators are all set in the treatment head and can only be used to monitor the total dose of the high-energy radiation emitted from the radiation source through the primary collimator, but through the primary collimator to reach the dose measurement
  • the high-energy rays of the device will be partially blocked by the secondary collimator in the treatment head, so that it is impossible to accurately measure the true dose that reaches the surface of the patient's body.
  • the present invention provides a radiotherapy bed with dose measurement function.
  • the radiotherapy bed provided by the present invention will be described in detail below.
  • the radiotherapy bed with dose measurement function provided by the present invention includes a treatment bed surface 101, a guide rail and a dose measuring device 105.
  • the guide rail is arranged under the radiation irradiation area 102 of the treatment bed surface 101, and the dose measurement
  • the device 105 is arranged on a rail, and the rail includes a first rail 103 and a second rail 104 that can move relative to each other, so that the dose measuring device 105 can move two-dimensionally under the radiation area 102 along the rail.
  • the first guide rail 103 and the second guide rail 104 can move relative to each other, and the dose measuring device 105 can move along the guide rail, it is possible to realize the two-dimensional movement of the dose measuring device 105 under the radiation irradiation area 102.
  • the first guide rail 103 when the first guide rail 103 is fixed, the right end of the second guide rail 104 can move up and down along the first guide rail 103, while the dose measuring device 105 can move left and right on the second guide rail 104. , So as to realize the two-dimensional movement of the dose measuring device 105 under the radiation irradiation area 102.
  • FIG. 1 shows that the first guide rail 103 and the second guide rail 104 can move relative to each other, and the dose measuring device 105 can move along the guide rail, it is possible to realize the two-dimensional movement of the dose measuring device 105 under the radiation irradiation area 102.
  • the first rail 103 is a circular rail and is fixedly arranged
  • the second rail 104 is a linear rail arranged along the diameter direction of the first rail 103
  • two of the second rail 104 The end can move circularly along the first guide rail 103
  • the dose measuring device 105 can move radially on the second guide rail 104, so as to realize the two-dimensional movement of the dose measuring device 105 under the radiation irradiation area 102.
  • the shape of the guide rail shown in FIGS. 1 and 2 is only an example and not a limitation.
  • the first guide rail 103 and the second guide rail 104 can also adopt other shapes, as long as the first guide rail 103 and the second guide rail 104 are satisfied. It can move relatively so that the dose measuring device 105 can move two-dimensionally under the radiation area 102 along the guide rail.
  • the radiation resistance of the treatment table 101 can be measured experimentally. Therefore, based on the experimental data of the treatment table 101's ray blocking and the measurement data of the dose measuring device 105, the true dose reaching the patient's body can be derived.
  • the dose measuring device can make a two-dimensional movement under the radiation irradiation area, so the dose measuring device can measure the radiation at the desired position.
  • the patient's dose can be obtained experimentally due to the blocking of the treatment bed facing the rays, so the real dose to the patient's body can be derived from the measurement data, thereby improving the accuracy of dose measurement in radiotherapy.
  • the material of the guide rail provided in the embodiment of the present invention is a non-metallic material to avoid the guide rail from blocking rays.
  • the first guide rail 103 is a linear guide rail extending in a first direction
  • the second guide rail 104 is a linear guide rail extending in a second direction
  • the first direction intersects the second direction.
  • the first direction and the second direction are perpendicular to each other. As shown in Fig. 1, the first direction is the longitudinal direction, and the second direction is the lateral direction.
  • the shape of the radiation irradiation zone 102 is rectangular, the first guide rail 103 is fixedly arranged along the right side of the radiation irradiation zone 102, and the right end of the second guide rail 104 is arranged on the first guide rail 103 so as to be able to follow the first guide rail 103.
  • the dose measuring device 105 is arranged on the second guide rail 104.
  • the length of the first guide rail 103 is the same as the length of the right side of the radiation irradiated area 102, and the length of the second guide rail 104 is the same as that of the other side of the radiation irradiated area 102 perpendicular to the right side (for example, the lower side).
  • the lengths of the sides) are the same, so that the two-dimensional movement range of the dose measuring device 105 can completely cover the radiation irradiation area 102.
  • the length and width of the radiation irradiation area 102 are not equal, for example, when the length in the longitudinal direction of the radiation irradiation area 102 is longer than the length in the transverse direction, the length of the first guide rail 103 along the radiation irradiation area 102 is longer.
  • the long longitudinal sides are fixedly arranged, so that the stability of the entire rail system can be improved.
  • the radiotherapy bed further includes a controller (not shown in the drawings), and the guide rail and the dose measuring device 105 are electrically connected to the controller respectively, and the controller is used to control the movement of the guide rail and the dose measuring device 105.
  • a controller not shown in the drawings
  • the guide rail and the dose measuring device 105 are electrically connected to the controller respectively, and the controller is used to control the movement of the guide rail and the dose measuring device 105.
  • the controller When using a radiotherapy bed, the controller needs to obtain the center position of the radiation area 102 from the treatment information of the accelerator before starting treatment. According to the obtained position information of the radiation area 102, the controller controls the guide rail and the dose measuring device 105 Movement to accurately move the dose measuring device 105 to the center position of the radiation irradiation area 102 required for patient treatment. In the case of a static treatment method, during the treatment, the dose measuring device 105 measures the dose irradiated to the patient at the center position in a stationary manner until a new treatment field is replaced.
  • the treatment bed After changing the new treatment field, the treatment bed must also obtain the new treatment field position information in advance, move the dose measuring device 105 to the corresponding position in advance, until the current treatment field treatment is completed, and so on, until all treatments are completed.
  • the treatment bed still needs to obtain the initial position of the treatment field and accurately move the dose measuring device 105 to the predetermined position.
  • the controller of the treatment bed After the treatment starts, the controller of the treatment bed will follow the acquired dynamic treatment information The trajectory of the radiation field accurately maintains the dose measuring device 105 at the center of the dynamic radiation field, so as to accurately measure the real dose to the patient under dynamic conditions.

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  • 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)
  • Radiation-Therapy Devices (AREA)

Abstract

L'invention concerne un lit de radiothérapie doté d'une fonction de mesure de dose, lequel se rapporte au domaine technique des instruments médicaux. Le lit de radiothérapie comprend une surface de lit de traitement (101), des rails de guidage et un dispositif de mesure de dose (105), les rails de guidage étant disposés au-dessous d'une zone d'irradiation de rayons (102) de la surface de lit de traitement (101); le dispositif de mesure de dose (105) étant disposé sur les rails de guidage; et les rails de guidage comprenant un premier rail de guidage (103) et un second rail de guidage (104) qui peuvent se déplacer l'un par rapport à l'autre, de telle sorte que le dispositif de mesure de dose (105) peut se déplacer d'une manière bidimensionnelle au-dessous de la zone d'irradiation de rayons (102) et le long des rails de guidage. Par la disposition du dispositif de mesure de dose (105) sur les rails de guidage au-dessous de la zone d'irradiation de rayons (102) de la surface de lit de traitement (101), le dispositif de mesure de dose (105) peut se déplacer d'une manière bidimensionnelle au-dessous de la zone d'irradiation de rayons (102), et par conséquent, le dispositif de mesure de dose (105) peut mesurer la dose irradiée sur un patient à une position attendue; et étant donné que la surface de lit de traitement (101) bloquant un rayon peut être obtenue par des expériences, une dose réelle atteignant le corps du patient peut être déduite en fonction de données de mesure, ce qui permet d'améliorer la précision de la mesure de dose pendant la radiothérapie.
PCT/CN2019/117012 2019-06-03 2019-11-11 Lit de radiothérapie doté d'une fonction de mesure de dose WO2020244146A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201920827098.6 2019-06-03
CN201910478795.XA CN110141802A (zh) 2019-06-03 2019-06-03 一种具有剂量测量功能的放射治疗床
CN201920827098.6U CN211327832U (zh) 2019-06-03 2019-06-03 一种具有剂量测量功能的放射治疗床
CN201910478795.X 2019-06-03

Publications (1)

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WO2020244146A1 true WO2020244146A1 (fr) 2020-12-10

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060182224A1 (en) * 2005-02-11 2006-08-17 Besson Guy M System for dynamic low dose x-ray imaging
CN101336120A (zh) * 2005-12-12 2008-12-31 离子束应用股份有限公司 用于在辐射治疗设备内定位目标体的装置和方法
US20100246767A1 (en) * 2009-03-25 2010-09-30 Accuthera Inc. Apparatus and method for x-ray treatment
US20130336449A1 (en) * 2012-06-15 2013-12-19 Accuthera Inc. Real-Time Three-Dimensional Radiation Therapy Apparatus and Method
CN203620096U (zh) * 2013-12-06 2014-06-04 广州医科大学附属肿瘤医院 一种电子线全身放疗定位平台
CN208838889U (zh) * 2018-04-25 2019-05-10 西安大医数码科技有限公司 立体定向放疗设备
CN110141802A (zh) * 2019-06-03 2019-08-20 苏州雷泰医疗科技有限公司 一种具有剂量测量功能的放射治疗床

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060182224A1 (en) * 2005-02-11 2006-08-17 Besson Guy M System for dynamic low dose x-ray imaging
CN101336120A (zh) * 2005-12-12 2008-12-31 离子束应用股份有限公司 用于在辐射治疗设备内定位目标体的装置和方法
US20100246767A1 (en) * 2009-03-25 2010-09-30 Accuthera Inc. Apparatus and method for x-ray treatment
US20130336449A1 (en) * 2012-06-15 2013-12-19 Accuthera Inc. Real-Time Three-Dimensional Radiation Therapy Apparatus and Method
CN203620096U (zh) * 2013-12-06 2014-06-04 广州医科大学附属肿瘤医院 一种电子线全身放疗定位平台
CN208838889U (zh) * 2018-04-25 2019-05-10 西安大医数码科技有限公司 立体定向放疗设备
CN110141802A (zh) * 2019-06-03 2019-08-20 苏州雷泰医疗科技有限公司 一种具有剂量测量功能的放射治疗床

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