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Optical beam pointing system for setting irradiation position for radiation

一种放射线、光束的技术，应用在光束瞄准系统领域，能够解决不一致性、离差等问题

Inactive Publication Date: 2009-06-03
TAKENAKA SHISUTEMU KIKI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the above-mentioned adjustments are very fine, so there is still a problem of dispersion (inconsistency) caused by maintenance personnel

Method used

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  • Optical beam pointing system for setting irradiation position for radiation
  • Optical beam pointing system for setting irradiation position for radiation
  • Optical beam pointing system for setting irradiation position for radiation

Examples

Experimental program
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Embodiment Construction

[0022]

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

figure 1 is a perspective view showing a radiation therapy apparatus employing a beam aiming system according to the present invention, figure 2 is a brief representation figure 1 A stereogram of the visible beam projected by the beam aiming system, image 3 and Figure 4 is the composition figure 1 Schematic diagram of the beam pointer of the beam aiming system, Figure 5 is the composition figure 1 Schematic diagram of the beam monitoring setup of the beam aiming system, Figure 6 is intended to tell figure 1 The schematic diagram drawn for the reference value storage step in the beam aiming system, Figure 7 and Figure 8 is intended to tell figure 1 Schematic drawing of the action of the beam aiming system.

[0023]

Such as figure 1 As shown, the beam aiming system 1 according to the present invention comprises a left beam pointer (first be...

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Abstract

There is provided an optical beam pointing system for setting the irradiation position for radiation, which is capable of automatically performing positional adjustments of visible light beams with respect to an aiming center without requiring any maintenance worker. In the system, pointers 2L and 2R are disposed on opposite sides of the irradiation center C and opposed each other, each pointer including a light-projecting portion 3L or 3R for projecting a beam BL or BR aimed at the irradiation center, a light-receiving portion 4L or 4R for generating a detection signal DL or DR in accordance with a receiving position at which the beam is received from its opposing pointer, a control portion 7L or 7R having previously stored therein, as a reference value SL or SR, a value for the detection signal to be generated by the light-receiving portion which has received the beam projected from the opposing pointer and passing through the irradiation center as aimed, the control portion generating a correction signal CL or CR for correcting a projection angle of the opposing pointer when a difference between the reference value and a value for the detection signal received by the light-receiving portion falls outside a tolerable range, a transmitting portion 8L or 8R and a receiving portion 9L or 9R for transmitting / receiving the correction signal to / from the opposing pointer, and an actuator 10L or 10R for correcting a projection angle in accordance with the received correction signal.

Description

technical field [0001] The present invention relates to a beam aiming system for marking an irradiation center when positioning an irradiation object as the irradiation center of radiation. Background technique [0002] Conventionally, radiation therapy is performed by using a radiation therapy device such as a linear accelerator (Linear Accelerator) to irradiate radiation to a patient's lesion multiple times to destroy abnormal cells such as cancer cells while maintaining normal cells. [0003] Before performing this radiation therapy, the position of the lesion in the body is confirmed based on image diagnosis such as CT photography, and the size and range of the radiation to be irradiated are determined. After this decision is made, a mark indicating the radiation exposure position is made on the patient's skin, so that it is not necessary to confirm the radiation exposure position each time. These marks are usually drawn with an ink pen or the like at a total of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/00A61B6/00
CPCA61N2005/105A61N5/1049
Inventor 尾濑益雄藤田元宫下邦幸藤川敬文
Owner TAKENAKA SHISUTEMU KIKI
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