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Radiotherapeutic treatment plan adaptation

A radiation therapy and treatment planning technology, applied in radiation therapy, therapy, mechanical/radiation/invasive therapy, etc., can solve problems such as changes in the relative positions of malignant tissues and organs, and improve workflow efficiency, speed and accuracy adaptation effect

Active Publication Date: 2007-07-25
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

However, aligning the patient as a whole does not account for variations in the relative location of malignant tissue and organs at risk

Method used

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Embodiment Construction

[0018] Referring to FIG. 1 , a radiation therapy system includes a planning computed tomography imaging scanner 10 . The illustrated scanner 10 includes a cone beam x-ray source 12 and a two-dimensional x-ray detector array 14 mounted on a rotating gantry 16 on opposite sides of an imaging region 20 . (While these features are illustrated in FIG. 1 for purposes of illustration, it should be appreciated that x-ray source 12, detector array 14, and rotating gantry 16 are typically housed within a fixed gantry housing). A radiation therapy patient, such as a cancer patient, is positioned on a patient support table 22 and moved into the imaging area 20, and the patient's computed tomography data is acquired using the scanner 10. The reconstruction processor 26 reconstructs the acquired projection data into one or more radiation therapy patient planning images, which are stored in the planning image memory 30, using filtered back projection or another reconstruction algorithm.

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Abstract

In a radiation therapy method, one or more planning images are acquired (102) of a subject. Features of at least malignant tissue are contoured in the one or more planning images to produce one or more initial feature contours. One or more treatment images of the subject are acquired (114). The one or more initial feature contours are updated (122) based on the one or more treatment images. Radiation treatment parameters are optimized (126) based upon the updated one or more feature contours. Radiation treatment of the subject is performed (130) using the optimized parameters.

Description

technical field [0001] The following inventions relate to the field of radiation therapy. It is particularly suitable for use in intensity modulated radiation therapy using high energy x-rays or gamma rays and will be described with particular reference to this application. However, the invention is also generally applicable to 3D conformal radiation therapy and other types of radiation therapy, whether using x-rays, gamma rays, charged particle beams, etc., and whether using tomographic rotating beam sources or multiple fixed Ray beam source. Background technique [0002] Radiation therapy is a powerful tool in the fight against cancer and certain other tissue malignancies. Ionizing radiation, such as x-rays, gamma rays, proton or neutron particles, etc. is administered to cancerous tumors, organs controlled by cancer, or other areas containing malignant tissue. Ionizing radiation damages the DNA of cells, which can kill irradiated cells. Growing and rapidly multiplying...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/00G06K9/00G16H20/40
CPCA61N2005/1061G06F19/3481A61N5/1031A61N5/103G16H20/40
Inventor M·巴尔L·施皮斯T·R·麦努特
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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