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MOCOMP - Motion Compensation

Fiducial-Less Compensation of Breathing Motion in Lung Cancer Radiosurgery
(Part of the DFG Schwerpunktprogramm 1124 "Medizinische Navigation und Robotik")


To apply radiosurgical methods to tumors in the chest and abdomen, it is necessary to take into account respiratory motion. Respiratory motion can move the tumor by more than 1 cm. Without compensation of this motion, it is unavoidable to enlarge the target volume with a safety margin and so we have the problem that healthy tissue is involved. Within this project we try to develop methods in order to be able to predict the position of the tumor at a certain time. In order to reach this goal, a correlation shall be established, which allows to infer from the motion of the chest and the abdomen to the position of the tumor. Infrared emitters are attached to the patient and tracked by a camera. These emitter positions are attached every ten seconds with a live xray-image, in order to be able to calculate the breathing status and so the tumor position.


Research Team


Kajetan Berlinger
Michael Roth
Otto Sauer
Achim Schweikard
Lucia Vences

Project partner


Universität Würzburg Klinik für Strahlentherapie
Universität Lübeck Institut für Robotik und Kognitive Systeme
Stanford University Medical Center
Accuray Inc.

Funded by


Deutsche Forschungsgemeinschaft

Computer Science IX | Technische Universität München