Publication

An Approach to Multimodal Image Segmentation

2006
Student Projects

Abstract

Radiotherapy treatment planning requires exact delineation of tumors in acquired images. Further, motion and deformation of a tumor due to respiratory movements must be known in order to better target and dose the treatment radiation. Here we present and implement a pipeline for the registration of respiratory correlated multimodal RC-CT-PET image sequences. Further, a multimodal region-based non-parametric active-mesh segmentation framework is presented, that allows to correctly delineate objects in multimodal volumetric images. Applications to MRI brain image registration and extraction, as well as RC-CT-PET lung tumor delineation are shown. These tools allow for the delineation and the volumetric motion tracking and deformation analysis of lung tumors throughout the respiratory cycle, and therefore represent a major achievement for radiotherapy treatment planning.

Official source

https://infoscience.epfl.ch/entities/publication/0e68bbd8-6918-465f-b62f-cc9c1f0c8d5a

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2006
Student Projects

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/0e68bbd8-6918-465f-b62f-cc9c1f0c8d5a

About this result

Related concepts (28)

Radiation therapy

Radiation therapy or radiotherapy, often abbreviated RT, RTx, or XRT, is a therapy using ionizing radiation, generally provided as part of cancer treatment to control or kill malignant cells and normally delivered by a linear accelerator. Radiation therapy may be curative in a number of types of cancer if they are localized to one area of the body. It may also be used as part of adjuvant therapy, to prevent tumor recurrence after surgery to remove a primary malignant tumor (for example, early stages of breast cancer).

Medical imaging

Medical imaging is the technique and process of imaging the interior of a body for clinical analysis and medical intervention, as well as visual representation of the function of some organs or tissues (physiology). Medical imaging seeks to reveal internal structures hidden by the skin and bones, as well as to diagnose and treat disease. Medical imaging also establishes a database of normal anatomy and physiology to make it possible to identify abnormalities.

Image registration

Image registration is the process of transforming different sets of data into one coordinate system. Data may be multiple photographs, data from different sensors, times, depths, or viewpoints. It is used in computer vision, medical imaging, military automatic target recognition, and compiling and analyzing images and data from satellites. Registration is necessary in order to be able to compare or integrate the data obtained from these different measurements.

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An Approach to Multimodal Image Segmentation

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