With conformal radiation therapy and intensity modulated radiation therapy (IMRT) dose distributions can be tailored to the shape of the target region while at the same time the dose in organs at risk can be minimized. The patient’s anatomy and position, however, changes in the course of a radiation therapy. Given the high possible conformity of dose distribution, an adaptive radiation therapy is desirable. The time consuming process of delineation of anatomic structures must be reduced to allow fast planning and adaptation of treatment plans to changed positions and shapes of organs. But not only in adaptive radiation therapy, also in routine radiation therapy planning, time can be saved if the segmentation process was accelerated. Not only optimization in terms of time but also reproducibility, especially for clinical studies is desirable. Therefore the use of computers in radiation therapy can improve the extraction of relevant structures in images with the help of suitable software tools and fast algorithms. Our group develops and evaluates new algorithms for the segmentation of organs at risk and integrates them into the planning process. The segmentation methods comprise low level segmentation with drawing tools, interactive tools, and semi-automatic segmentation procedures. In current projects automatic segmentation methods are developed to solve special segmentation issues, also with the assistance of pattern recognition methods.

People involved:
Rolf Bendl
Andrea Fränzle

Jonas Bogusch
Niclas Hagen
Konstantin Kinzel
Christiane Schöpflin
Christian Bierstedt
Armin Stoll
Florian Dittmann
Christian Lampe
Gerhard Lechsel

You want to know more? …. Get in touch with Prof. Dr. Rolf Bendl

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