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Abstract #1487

Validation of Fast Dynamic SPAMM Tagged MRI Based Measurement of Non-Linear 3D Soft Tissue Deformation

Kevin Mattheus Moerman1,2, Andre M. J. Sprengers2, Ciaran Knut Simms1, Rolf M. Lamerichs3, Jaap Stoker2, Aart J. Nederveen2

1Trinity Centre for Bioengineering, University of Dublin, Trinity College, Dublin, Ireland; 2Radiology Department, Academic Medical Centre, Amsterdam, Netherlands; 3Philips Research, Eindhoven, Netherlands

Current SPAMM methods typically construct data from many repeated motion cycles. However discomfort and health issues may preclude a large number of repetitions. The current study presents the validation of a novel fast SPAMM sequence for the measurement of dynamic 3D soft tissue deformation following just 3 repeated motion cycles. The techniques were validated using marker tracking in a silicone gel phantom and demonstrated a mean displacement difference of 0.07mm (standard deviation 0.6mm). Since only 3 motion cycles are required the presented methods are the fastest currently available for the dynamic measurement of non-linear 3D soft tissue deformation.