Collimator for high-energy radiation and program for controlling said collimator
    1.
    发明申请
    Collimator for high-energy radiation and program for controlling said collimator 有权
    用于高能辐射的准直仪和用于控制所述准直仪的程序

    公开(公告)号:US20050141671A1

    公开(公告)日:2005-06-30

    申请号:US10495967

    申请日:2002-10-23

    IPC分类号: A61N5/10 G21K1/04 G21K1/02

    CPC分类号: G21K1/04 A61N5/1042 G21K1/046

    摘要: The invention relates to a collimator (1) for defining a beam of energetic rays (2) which is emitted from an essentially punctiform radiation source (3) and is oriented onto an object (1) to be treated. The collimator is especially used for the stereotactic conformation radiotherapy of tumors. The collimator (1) is embodied in such a way that an irregular object (4) can be scanned by rays (2, 2′) which are defined by an opening in the collimator. The invention also relates to a program for controlling the collimator. In order to define the contours (29, 29′, 29″) of the objects (4) to be irradiated in a simple but highly accurate manner, especially with a precise definition of the irradiation fields, the collimator comprises a plurality of different sized openings (5, 5′ 5″). One of the openings (5, 5′, 5″) can be selectively displaced in a polydirectional manner on a strip (6) having a spherical surface, and the central axis (7) thereof is oriented towards the radiation source (3). The other collimator openings (5′, 5″) are shielded form the rays (2). A control system (9) acts on the drives (23, 24, 25) of a drive device (8) in such a way that large openings (5, 5′) are used to scan large irradiation surfaces (26) of the object to be treated (4), and small openings (5′, 5″) are used for precise definition at the edge of the irradiation surfaces (26) of the object to be treated (4), especially in the event of irregular contours (29, 29′, 29″).

    摘要翻译: 本发明涉及一种用于限定从基本上点状辐射源(3)发射并且被定向到待处理物体(1)上的能量射线束(2)的准直器(1)。 准直器特别用于肿瘤的立体定向构象放射治疗。 准直器(1)以这样的方式实现,使得不规则物体(4)可以被由准直器中的开口限定的射线(2,2')扫描。 本发明还涉及一种用于控制准直仪的程序。 为了以简单但高度准确的方式(特别是对照射场的精确定义)限定要照射的物体(4)的轮廓(29,29',29“),准直器包括多个不同的 (5,5'5“)。 开口(5,5',5“)中的一个可以以多方向方式选择性地移位在具有球形表面的条带(6)上,并且其中心轴线(7)朝向辐射源(3)定向, 。 另一个准直器开口(5',5“)由光线(2)屏蔽。 控制系统(9)作用在驱动装置(8)的驱动器(23,24,25)上,使得大的开口(5,5')用于扫描物体的大的照射表面(26) 待处理物体(4)的照射表面(26)的边缘处使用小开口(5',5“),特别是在不规则轮廓的情况下 (29,29',29“)。

    Displacement detecting element
    2.
    发明授权
    Displacement detecting element 有权
    位移检测元件

    公开(公告)号:US06696694B2

    公开(公告)日:2004-02-24

    申请号:US10363897

    申请日:2003-05-27

    IPC分类号: G21K104

    摘要: The invention relates to a displacement-detecting element (1) comprising a measuring resistance (2), voltage source (3) and a displacement-dependent voltage pick off (4). The measuring resistance (2) is embodied in the form of a strip. The length of the resistor (6) corresponds to at least the maximal length of displacement (7) of the component to be detected. The invention also relates to a multileaf collimator (23) having such a displacement-detecting element (1). The aim of the invention is to produce a displacement-detecting element (a) for detecting the position of the leaves (22) in a multileaf collimator (23) in a precise and faultless manner. The displacement detecting element (1) is designed for detecting the displacement (7′) of the leaves (22) in a multileaf collimator (23) in the following manner: the measuring resistance (2) or the voltage pick off point (4) are connected in a rigid manner to the leaves (22) in order to detect the displacement and another functioning element (4 or 2) is arranged in a fixed manner. At least one of these functioning elements (2, 4) is disposed in an area (33, 33′, 33″) of the leaves (22), which is not exposed to main radiation (34).

    摘要翻译: 本发明涉及一种位移检测元件(1),其包括测量电阻(2),电压源(3)和位移相关的电压拾取器(4)。 测量电阻(2)以条带的形式实现。 电阻器(6)的长度至少等于待检测部件的最大位移长度(7)。 本发明还涉及具有这种位移检测元件(1)的多叶准直器(23)。 本发明的目的是产生用于以精确且无缺陷的方式检测多叶准直器(23)中的叶片(22)的位置的位移检测元件(a)。 位移检测元件(1)被设计用于以下列方式检测多叶准直器(23)中的叶片(22)的位移(7'):测量电阻(2)或电压拾取点(4) 以坚固的方式连接到叶片(22)以便检测位移,并且以固定的方式布置另一功能元件(4或2)。 这些功能元件(2,4)中的至少一个设置在不暴露于主辐射(34)的叶片(22)的区域(33,33',33“)中。

    Collimator for limiting a bundle of high-energy rays
    4.
    发明授权
    Collimator for limiting a bundle of high-energy rays 失效
    用于限制一束高能射线的准直仪

    公开(公告)号:US06730924B1

    公开(公告)日:2004-05-04

    申请号:US09890218

    申请日:2001-07-26

    IPC分类号: G21K102

    CPC分类号: G21K1/046 A61N5/1042 G21K1/04

    摘要: The invention relates to a collimator (1) for limiting a bundle of high-energy rays (2), which is emitted by a substantially point-like radiation source (3) and directed towards a treatment object (20) and used in particular for the stereotactic conformation radiotherapy of tumors. According to the invention the collimator (1) comprises a plurality of diaphragm leaves (4, 4′) which are arranged opposite each other and which are made of a radiation-absorbing material and which, by means of drive mechanisms, can be moved into the optical path in such a way that the contours and/or exposure period of said optical path can be freely defined, the front edges (5, 5′) of the diaphragm leaves (4, 4′) being parallel to the optical path at all times. Avoiding penumbral shadows with this kind of collimator (1) is made considerably easier if the diaphragm leaves (4, 4′) consists of a rear partial element (6, 6′) which can be linearly displaced and a front partial element (7, 7′) which is hinged to same. Drive means adjust the front partial element (7, 7′) in accordance with the prevailing position of the rear partial element (6, 6′) in such a way that the front edges (5, 5′) are parallel to the optical path at all times.

    摘要翻译: 本发明涉及一种用于限制高能射线束(2)的准直器(1),其由基本上点状的辐射源(3)发射并指向治疗物体(20),特别用于 肿瘤的立体定向构象放射治疗。 根据本发明,准直器(1)包括多个彼此相对布置的隔膜叶片(4,4'),它们由辐射吸收材料制成,并且通过驱动机构可以移动到 所述光路以这样的方式使得所述光路的轮廓和/或曝光周期可以自由地限定,所述光阑的前边缘(5,5')在与所述光路的光路平行的位置处平行于所述光路 一直。 如果隔膜离开(4,4')由可以线性位移的后部分元件(6,6')和前部分元件(7,6')组成,则使用这种准直器(1)避免半影阴影变得相当容易, 7'),其铰接到相同的位置。 驱动装置根据后部分元件(6,6')的主要位置调节前部分元件(7,7'),使得前边缘(5,5')平行于光路 每时每刻。

    Contour collimator for use in radiotherapy
    5.
    发明授权
    Contour collimator for use in radiotherapy 有权
    轮廓准直器用于放射治疗

    公开(公告)号:US06711237B1

    公开(公告)日:2004-03-23

    申请号:US09890840

    申请日:2002-01-16

    IPC分类号: G21K104

    CPC分类号: G21K1/046 A61N5/1042 G21K1/04

    摘要: A contour collimator for radiation therapy has a plurality of diaphragm elements that are movable with respect to each other by means of drive units. The diaphragm elements of the invention are supported only on the side near the drive units for ease of movement. This allows larger contour collimators to be constructed having relatively heavy diaphragm elements while retaining relatively small motors.

    摘要翻译: 用于放射治疗的轮廓准直器具有可通过驱动单元相对于彼此移动的多个隔膜元件。 本发明的隔膜元件仅在靠近驱动单元的一侧被支撑,以便于移动。 这允许构造具有相对较重的隔膜元件的较大轮廓准直器,同时保持相对较小的马达。

    Collimator for high-energy radiation and program for controlling said collimator
    6.
    发明授权
    Collimator for high-energy radiation and program for controlling said collimator 有权
    用于高能辐射的准直仪和用于控制所述准直仪的程序

    公开(公告)号:US07132674B2

    公开(公告)日:2006-11-07

    申请号:US10495967

    申请日:2002-10-23

    IPC分类号: G21K1/02 A61N5/00

    CPC分类号: G21K1/04 A61N5/1042 G21K1/046

    摘要: The invention relates to a collimator (1) for defining a beam of energetic rays (2) which is emitted from an essentially punctiform radiation source (3) and is oriented onto an object (1) to be treated. The collimator is especially used for the stereotactic conformation radiotherapy of tumors. The collimator (1) is embodied in such a way that an irregular object (4) can be scanned by rays (2, 2′) which are defined by an opening in the collimator. The invention also relates to a program for controlling the collimator. In order to define the contours (29, 29′, 29″) of the objects (4) to be irradiated in a simple but highly accurate manner, especially with a precise definition of the irradiation fields, the collimator comprises a plurality of different sized openings (5, 5′ 5″). One of the openings (5, 5′, 5″) can be selectively displaced in a polydirectional manner on a strip (6) having a spherical surface, and the central axis (7) thereof is oriented towards the radiation source (3). The other collimator openings (5′, 5″) are shielded form the rays (2). A control system (9) acts on the drives (23, 24, 25) of a drive device (8) in such a way that large openings (5, 5′) are used to scan large irradiation surfaces (26) of the object to be treated (4), and small openings (5′, 5″) are used for precise definition at the edge of the irradiation surfaces (26) of the object to be treated (4), especially in the event of irregular contours (29, 29′, 29″).

    摘要翻译: 本发明涉及一种用于限定从基本上点状辐射源(3)发射并且被定向到待处理物体(1)上的能量射线束(2)的准直器(1)。 准直器特别用于肿瘤的立体定向构象放射治疗。 准直器(1)以这样的方式实现,使得不规则物体(4)可以被由准直器中的开口限定的射线(2,2')扫描。 本发明还涉及一种用于控制准直仪的程序。 为了以简单但高度准确的方式(特别是对照射场的精确定义)限定要照射的物体(4)的轮廓(29,29',29“),准直器包括多个不同的 (5,5'5“)。 开口(5,5',5“)中的一个可以以多方向方式选择性地移位在具有球形表面的条带(6)上,并且其中心轴线(7)朝向辐射源(3)定向, 。 另一个准直器开口(5',5“)由光线(2)屏蔽。 控制系统(9)作用在驱动装置(8)的驱动器(23,24,25)上,使得大的开口(5,5')用于扫描物体的大的照射表面(26) 待处理物体(4)的照射表面(26)的边缘处使用小开口(5',5“),特别是在不规则轮廓的情况下 (29,29',29“)。

    Method and apparatus for producing an intensity modulated beam of radiation
    7.
    发明申请
    Method and apparatus for producing an intensity modulated beam of radiation 审中-公开
    用于产生强度调制的辐射束的方法和装置

    公开(公告)号:US20070041493A1

    公开(公告)日:2007-02-22

    申请号:US10555916

    申请日:2004-05-10

    IPC分类号: A61N5/10 G21K1/02

    CPC分类号: A61N5/1042 G21K1/04 G21K1/046

    摘要: A method of intensity-modulating a beam of radiation from a radiation source is provided, the method including the steps of: a) providing a collimator having a window which allows the passage of radiation from the radiation source and which defines when viewed from the radiation source a two-dimensional array of bixels, the collimator further having a plurality of independently movable radiation attenuators which are constrained to move along columns or rows of the array to block selected bixels thereof, whereby, within each column or row along which the attenuators are movable, at least one arrangement of the respective attenuator(s) results in a pair of open bixels sandwiching a blocked bixel or line of blocked bixels; b) positioning the collimator in the path of the radiation source; and c) repeatedly: positioning the radiation attenuators within the window to form at each repeat a different pattern of bixels; and irradiating the collimator, until a predetermined pattern of radiation intensities for the beam of radiation has been delivered through the collimator. A corresponding apparatus for producing an intensity-modulated beam of radiation which is operable in accordance with the above method, and a method of radiotherapy treatment performed on a human or animal body comprising subjecting the body to an intensity-modulated beam of radiation formed using the above method are also provided.

    摘要翻译: 提供了一种对来自辐射源的辐射束进行强度调制的方法,所述方法包括以下步骤:a)提供具有窗口的准直仪,该窗口允许来自辐射源的辐射通过,并且当从辐射观察时限定 源极化二维阵列,准直器进一步具有多个可独立移动的辐射衰减器,该辐射衰减器被限制为沿阵列的列或行移动以阻挡其所选择的像素,从而在衰减器沿其中的每个列或行内 各个衰减器的至少一个排列导致一对打开的双焦块,夹着一个阻挡的双像素或一束阻挡的双体晶体; b)将准直器定位在辐射源的路径中; 和c)重复地:将辐射衰减器定位在窗口内,以在每个重复不同的单体图案时形成; 并照射准直仪,直到用于辐射束的辐射强度的预定图案已经通过准直器传送。 用于产生根据上述方法可操作的强度调制的辐射束的相应装置,以及对人体或动物体进行的放射治疗处理方法,包括使身体经受强度调制的辐射束,其使用 还提供了上述方法。

    Whole body stereotaxic device
    8.
    发明授权
    Whole body stereotaxic device 失效
    全身立体定位装置

    公开(公告)号:US6045558A

    公开(公告)日:2000-04-04

    申请号:US11795

    申请日:1998-08-19

    IPC分类号: A61B6/04 A61B6/08 A61B90/11

    摘要: A whole body stereotaxis apparatus comprising a base plate (2) to accommoe a patient, two side strips (4, 6) which are attached to the base plate (2) at the marginal or side edges thereof and laterally delimit the base plate (2) and to which arches (10, 12) extending over the base plate (2) can be attached, characterized in that a central strip (8) is mounted on the base plate (2) and comprises bores (22) to accommodate accessories.

    摘要翻译: PCT No.PCT / DE96 / 01521 Sec。 371日期1998年8月19日 102(e)1998年8月19日PCT PCT 1996年8月14日PCT公布。 WO97 / 00067 PCT公开号 日期1997年2月27日全身立体定位装置包括一个容纳患者的基板(2),两个侧边条(4,6),它们在边缘或侧边附接到基板(2),横向限定 底板(2)和延伸在基板(2)上的拱形件(10,12)可以被连接,其特征在于,中心条(8)安装在基板(2)上并且包括孔(22) )适应配件。

    Contour collimator for radiotherapy
    9.
    发明授权
    Contour collimator for radiotherapy 失效
    放射治疗的轮廓准直器

    公开(公告)号:US06188748B1

    公开(公告)日:2001-02-13

    申请号:US09043951

    申请日:1998-05-15

    IPC分类号: G21K104

    摘要: A contour collimator has a plurality of plate-shaped diaphragm elements movably arranged with respect to each other in a guiding block to form a contour diaphragm for a radiation beam emitted by a radiation source towards the collimator, and at least one drive for moving the diaphragm elements. A drive is associated with each diaphragm element with the drives of a group of diaphragm elements being substantially adjacent, and a driving transmission arranged between each drive and the associated diaphragm element.

    摘要翻译: 轮廓准直器具有多个板状隔膜元件,该多个板状隔膜元件在引导块中相对于彼此可移动地布置,以形成用于由辐射源朝向准直器发射的辐射束的轮廓隔膜,以及用于移动隔膜的至少一个驱动器 元素。 驱动器与每个隔膜元件相关联,其中一组隔膜元件的驱动器基本相邻,以及布置在每个驱动器和相关联的隔膜元件之间的驱动变速器。

    Switched-mode regulator with inductor current simulation circuit
    10.
    发明授权
    Switched-mode regulator with inductor current simulation circuit 失效
    带电感电流模拟电路的开关稳压器

    公开(公告)号:US4967138A

    公开(公告)日:1990-10-30

    申请号:US442362

    申请日:1989-10-20

    IPC分类号: H02M3/158

    CPC分类号: H02M3/1582

    摘要: A circuit for the conversion of an unregulated input voltage (UE) into a regulated DC output voltage (UA) is specified, with which the input voltage (UE) can assume both a higher and a lower value than the desired output voltage (UA). In addition to a set/actual value comparator (SIV), a current simulation (SNB) is provided, which simulates the current (JL) in the storage choke (L2) during charging as capacitor voltage, a common driver circuit (TRS), designed as switched constant current source, for both semiconductor switches (V1, V2), an input voltage monitoring (ESU), which switches off the switched-mode regulator when there is too low an input voltage (UE) and an output monitoring circuit (ASU), which reduces the set value of the regulating circuit on crossing in the downward direction of a selectable threshold.

    摘要翻译: PCT No.PCT / DE88 / 00/56 Sec。 371日期1989年10月20日第 102(e)日期1989年10月20日PCT 1988年3月15日PCT公布。 公开号WO88 / 08638 规定用于将未调节输入电压(UE)转换成稳压的直流输出电压(UA)的电路,输入电压(UE)可以采用高于和低于 所需的输出电压(UA)。 除了设定/实际值比较器(SIV)之外,还提供了一个电流模拟(SNB),它模拟充电期间的存储扼流圈(L2)中的电流(JL)作为电容器电压,公共驱动电路(TRS) 设计为用于两个半导体开关(V1,V2)的开关恒流源,输入电压监视(ESÜ),当输入电压(UE)和输出监视电路(UE)输入电压过低时,切换开关稳压器 ASÜ),其在可选阈值的向下方向上减小了调节电路的交叉设定值。