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Abstract #1488

Implementation of an Active Breathing Coordinator During MRI to Support Radiotherapy Treatment Planning

Evangelia Kaza1, David John Collins1, Richard Symonds-Tayler1, Rafal Panek1, Wilhelm Horger2, Martin O. Leach1

1Cancer Research UK and EPSRC Cancer Imaging Centre, Institute of Cancer Research, Sutton, Surrey, United Kingdom; 2Healthcare Sector, Siemens AG, Erlangen, Bavaria, Germany

An Active Breathing Coordinator (ABC) was successfully applied during MRI with a clinically relevant 3D TSE SPACE sequence. The device was implemented for breath holding at a constant lung volume on in- or exhalation, presenting more accurate structure delineation than self-sustained breath holds and equivalent image quality to a navigator application. The ABC can be used for controlled breath holding under similar conditions as during radiotherapy to support treatment planning and assessment.