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Contour delineation for radiation therapy planning with real-time contour segment impact rendering

A radiation therapy and contouring technology, applied in the field of image processing and radiation therapy, can solve the problems of occupying the precious time of professional medical personnel, cumbersome and time-consuming manual contour drawing and processing, etc.

Inactive Publication Date: 2013-05-22
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manual contouring process is tedious and time consuming and takes up valuable time of medical professionals

Method used

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  • Contour delineation for radiation therapy planning with real-time contour segment impact rendering
  • Contour delineation for radiation therapy planning with real-time contour segment impact rendering
  • Contour delineation for radiation therapy planning with real-time contour segment impact rendering

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Embodiment Construction

[0022] refer to figure 1 , the radiation therapy system includes an imaging modality 10 adapted to acquire planning images for planning radiation therapy. In some embodiments, the imaging modality 10 is a computed tomography (CT) scanner, such as a Brilliance TM Big Bore TM CT scanner (available from Royal Philips Electronics AG, Eindhoven, The Netherlands). The Brilliance TM Big Bore TM The CT scanner is an illustrative CT scanner with a large patient aperture of 85 cm, which is large enough to accommodate a patient placed in a typical radiation treatment position. Other CT scanners may be used instead, as well as other imaging modalities such as positron emission tomography (PET), magnetic resonance (MR), single photon emission computed tomography (SPECT), and the like. The captured images are stored in the image memory 12 . Planning images are preferably acquired of a subject scheduled to receive radiation therapy. For example, the subject may be a tumor patient,...

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PUM

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Abstract

A contouring module (22, 24) iteratively adjusts contours delineating a radiation target region and risk regions in a planning image. An intensity modulation optimization module (30) generates a radiation therapy plan conforming with dosage or dosage constraints (26) for the radiation target region and the risk regions delineated by the contours. A differential analysis module (40) is configured to invoke the intensity modulation optimization module (30) to estimate partial derivatives of an output of the intensity modulation optimization respective to the contours. The contouring module (22, 24) is configured to invoke the differential analysis module (40) after each iterative contour adjustment to estimate the partial derivatives respective to the contour segments and to render the contour segments on a display of the planning image with the contour segments coded based on the estimated partial derivatives to indicate impact of the contour segments on the intensity modulation optimization.

Description

technical field [0001] The following relates to the field of radiation therapy, the field of medicine, the field of radiation therapy planning, the field of image processing, and related fields. Background technique [0002] In radiation therapy, a spatially targeted dose of ionizing radiation is applied to a tumor or other area containing cancerous or malignant tissue. Growing and rapidly proliferating cancer cells tend to be more susceptible to damage by ionizing radiation than normal cells, and thus by properly planning higher doses administered by applying radiation that preferentially kills cancerous or malignant tissue, the described damage. However, ionizing radiation is harmful to both malignant and healthy cells, so precise spatial targeting of radiation is important to effectively deliver radiation therapy to malignant tumors while limiting collateral damage to healthy tissue. [0003] In radiation therapy, radiation beams are applied at angular positions around ...

Claims

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Application Information

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IPC IPC(8): G06T7/00A61N5/10
CPCG06T2207/10072G06T7/0012G06T7/0083A61N5/103G06T2207/30096G06T7/12
Inventor T·内奇D·贝斯特罗夫
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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