EP1207941A1 - Einrichtung zur stereotaktischen radiotherapie - Google Patents

Einrichtung zur stereotaktischen radiotherapie

Info

Publication number
EP1207941A1
EP1207941A1 EP00948208A EP00948208A EP1207941A1 EP 1207941 A1 EP1207941 A1 EP 1207941A1 EP 00948208 A EP00948208 A EP 00948208A EP 00948208 A EP00948208 A EP 00948208A EP 1207941 A1 EP1207941 A1 EP 1207941A1
Authority
EP
European Patent Office
Prior art keywords
head
axis
radiogenic
stereotaxic
integral
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP00948208A
Other languages
English (en)
French (fr)
Inventor
Jean Valentin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP00948208A priority Critical patent/EP1207941A1/de
Publication of EP1207941A1 publication Critical patent/EP1207941A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/10—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis
    • A61B2090/101—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis for stereotaxic radiosurgery

Definitions

  • the invention finds applications particularly in the field of fractionated stereotaxic radiotherapy and radiosurgery. Without being limiting, the present invention applies in particular to the treatment of brain tumors and malformations, which will be designated below by the term lesions, this term being applied generically to everything which can be treated by radiotherapy or radiosurgery.
  • radiosurgery and radiotherapy under stereotaxic conditions proceed in two stages: identification of the three-dimensional coordinates of the lesions to be treated in a reference space defined by the stereotaxis frame.
  • the process for irradiating brain damage using the radioactive sources of Co60 is well known.
  • the processing apparatus has in particular been described in US-A-4780898. It includes a roughly hemispherical source-collimator assembly and a mobile patient support table equipped with a device intended to cooperate with the patient's head.
  • the source-collimator assembly comprises a large number of external sources of gamma rays associated respectively with channels which are all oriented towards the same focal point. While at the focal point the dose received from all of the mini-beams is sufficient to destroy the lesion, the intensity of each mini-beam taken separately is low so as not to damage the healthy tissue it crosses.
  • Linear accelerators of conventional radiotherapy have the disadvantage of having a single axis of rotation of the support of the radiogenic head.
  • Several solutions have been proposed to remedy this drawback. They can be grouped into two classes depending on the patient's position.
  • Betti et al. Propose a system for positioning and tilting the frame (on two rigid columns) and a special chair, capable of turning around a horizontal axis. zontal passing through the isocentre (treatment chair), so that the patient 's body accompanies the rotational movement of the head.
  • the target is placed at the isocenter of rotation of the irradiation beam, through which also passes the axis of rotation (transverse) of the stereotaxic system.
  • a combination of several arcs (each with an angular position of the head) gives a set of non-coplanar concentric arcs.
  • the patient goes from one arc therapy to the next in the supine position.
  • the isocentric rotation of the treatment table around the vertical axis allows moving from one arctherapy to the next.
  • the patient's head is fixed on a support which is linked to the treatment table or on an isocentric head support on a console independent of the table.
  • the combination of the isocentric rotation of the linear accelerator arm with different angular positions of the treatment table ensures multiple arc irradiation.
  • the treatment table being guided remotely, a simultaneous and continuous movement of the accelerator arm and the treatment table makes possible the so-called dynamic irradiation.
  • radioactive sources conventional linear accelerator
  • this framework constitutes an orthonormal reference frame making it possible to determine the coordinates of any point on the patient's head.
  • the identification of the internal areas that are involved is done in this repository using, for example, a scanner, an MRI, an angiography or any other method of spatial location of these areas.
  • the stereotaxic framework therefore constitutes a benchmark outside the patient's head in which it is possible to locate one or more brain areas in order to ensure their treatment by radiotherapy. Numerous devices are known which make it possible to associate a frame of reference with the head of a patient and to identify in this frame of reference the internal zones which are involved by means, for example, of a radio tomography.
  • the stereotaxis frame also serves to reproduce the position of the patient's head identically during the treatment. It constitutes on the patient's head the means of its precise positioning in the repository of the radiotherapeutic treatment apparatus.
  • This repository is not the same as the snapshot repository, the treatment machine being completely dissociated from the machine used for locating and spatially locating the area to be treated.
  • the stereotaxic frame thus constitutes the mechanical support for the precise positioning of the patient's head under the radiotherapy device.
  • radiotherapy devices have already been proposed in the past in which a radiation source of low intensity, such as an X-ray bulb could move in two axes.
  • a radiation source of low intensity such as an X-ray bulb could move in two axes.
  • Such devices are described in particular in FR 1071 714, as well as in FR 1 093 061.
  • these devices comprise a pivot axis always fixed and a second axis cutting the axis of pivoting and defining a second circular trajectory and whose angle relative to this pivoting axis can vary more or less from a right angle, so that by rotating the carrier head of the radiation source, the beam from this source can describe two cones opposite by their vertices, on either side of the position where the axes intersect at 90 °.
  • the fixed pivot axis is therefore not kinematically integral with the guide means defining the second circular path. Both are independent of each other.
  • the pivoting means carry not only the radiogenic head, but also the means making it possible to guide this head along the second circular path, so that these pivoting means are urged by a large overhang. If such a solution poses obvious problems of wear and precision in the positioning of the beam, it should be noted that these devices are designed for small sources of low intensity radiation weighing a few kg. Such solutions would not in all cases be applicable for precisely guiding sources such as linear accelerators weighing several hundred kg.
  • the subject of the present invention is a stereotaxic radiotherapy device as defined by claim 1.
  • the device according to the present invention always works in the same coordinate system with respect to the same isocentre thus making it possible to successively carry out the radiiotomographic localization of the area to be treat and then treat the lesion thus localized, using gamma rays.
  • Table 2 includes for this purpose a support and universal adapters 10, of which is shown in Figures 3 and 10, for positioning the various stereotaxic frames 11 existing; which makes it possible at any time to fix a stereotaxic frame 11 for locating in an external coordinate system and being able to perform simulations.
  • Each stereotaxic frame 11 can be provided with a specific universal adapter 10 left permanently, which allows rapid repositioning.

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)
  • Radiation-Therapy Devices (AREA)
EP00948208A 1999-08-11 2000-08-08 Einrichtung zur stereotaktischen radiotherapie Withdrawn EP1207941A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00948208A EP1207941A1 (de) 1999-08-11 2000-08-08 Einrichtung zur stereotaktischen radiotherapie

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP99420178A EP1075855A1 (de) 1999-08-11 1999-08-11 Einrichtung zur stereotaktischen Radiotherapie
EP99420178 1999-08-11
EP00948208A EP1207941A1 (de) 1999-08-11 2000-08-08 Einrichtung zur stereotaktischen radiotherapie
PCT/IB2000/001109 WO2001012262A1 (fr) 1999-08-11 2000-08-08 Dispositif de radiotherapie stereotaxique

Publications (1)

Publication Number Publication Date
EP1207941A1 true EP1207941A1 (de) 2002-05-29

Family

ID=8242291

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99420178A Withdrawn EP1075855A1 (de) 1999-08-11 1999-08-11 Einrichtung zur stereotaktischen Radiotherapie
EP00948208A Withdrawn EP1207941A1 (de) 1999-08-11 2000-08-08 Einrichtung zur stereotaktischen radiotherapie

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP99420178A Withdrawn EP1075855A1 (de) 1999-08-11 1999-08-11 Einrichtung zur stereotaktischen Radiotherapie

Country Status (3)

Country Link
EP (2) EP1075855A1 (de)
AU (1) AU6176900A (de)
WO (1) WO2001012262A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6653595B2 (ja) * 2016-03-04 2020-02-26 株式会社日立製作所 粒子線治療システム
US11058892B2 (en) 2017-05-05 2021-07-13 Zap Surgical Systems, Inc. Revolving radiation collimator
CN108401421B (zh) 2017-09-06 2022-12-20 睿谱外科系统股份有限公司 自屏蔽的集成控制放射外科系统
CN109847198B (zh) * 2018-12-29 2024-07-16 佛山瑞加图医疗科技有限公司 一种加速器调整装置
US11684446B2 (en) 2019-02-27 2023-06-27 Zap Surgical Systems, Inc. Device for radiosurgical treatment of uterine fibroids
EP4284501A4 (de) 2021-02-01 2025-01-01 Zap Surgical Systems, Inc. Inverse planungsvorrichtung und verfahren zur strahlenbehandlung
CN118846401A (zh) * 2023-04-28 2024-10-29 中硼(厦门)医疗器械有限公司 参考物定位装置及其定位方法、放射线照射系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1033844B (de) * 1951-09-04 1958-07-10 Ialicenciaia Talalmanyokat Ert Roentgenapparat fuer Bewegungsbestrahlung
US2781454A (en) * 1952-12-04 1957-02-12 Ca Atomic Energy Ltd Rotational therapy unit
SE453156B (sv) 1986-04-30 1988-01-18 Elekta Instr Sa Stralkniv innefattande ett stort antal inom ett stralskydd anordnade stralkellor
US4741015A (en) * 1986-12-05 1988-04-26 B. C. Medical Compagnie Limitee Universal X-ray unit
US5107839A (en) * 1990-05-04 1992-04-28 Pavel V. Houdek Computer controlled stereotaxic radiotherapy system and method
JP3468372B2 (ja) * 1992-09-07 2003-11-17 株式会社日立メディコ 定位的放射線治療装置
FR2748650B1 (fr) 1996-05-20 1998-08-07 Betti Osvaldo Oscar Unite de radiochirurgie

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0112262A1 *

Also Published As

Publication number Publication date
WO2001012262A1 (fr) 2001-02-22
AU6176900A (en) 2001-03-13
EP1075855A1 (de) 2001-02-14

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