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Abstract #3284

Developing a free-breathing dynamic contrast enhanced scan for Lung Cancer using radial ‘stack-of-stars’ technique

Shivani Kumar1,2,3, Robba Rai2, Daniel Moses1,4, Armia George2,3, Lois Holloway1,2,3,5,6, Shalini VInod1,2, and Gary Liney1,2,3,7

1The University of New South Wales, Sydney, Australia, 2Liverpool Cancer Therapy Centre, Liverpool, Australia, 3Ingham Institute of Applied Medical Research, Liverpool, Australia, 4Prince of Wales Hospital, Randwick, Australia, 5Institute of Medical Physics, University of Sydney, Sydney, Australia, 6Centre for Medical Radiation Physics, University of Wollongong, Wollongong, Australia, 7University of Wollongong, Wollongong, Australia

Dynamic contrast enhanced (DCE) MRI is becoming an increasingly important tool for assessing tumour response, however it's application in lung is limited by respiratory motion. We propose the use of radial acquisition technique to minimise motion by oversampling the centre of k-space albeit with reduced temporal resolution. The initial results show that the radial k-space trajectory is a suitable method for motion compensation which provided a DCE scan of sufficient image quality and temporal resolution which can be used as part of a complete free breathing lung MRI protocol.

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