Print Email Facebook Twitter Simulating Metabolite Basis Sets for in vivo MRS Quantification; Incorporating details of the PRESS Pulse Sequence by means of the GAMMA C++ library Title Simulating Metabolite Basis Sets for in vivo MRS Quantification; Incorporating details of the PRESS Pulse Sequence by means of the GAMMA C++ library Author Van der Veen, J.W. Van Ormondt, D. De Beer, R. Faculty Applied Sciences Department ImPhys/Imaging Physics Date 2012-10-22 Abstract In this work we report on generating/using simulated metabolite basis sets for the quantification of in vivo MRS signals, assuming that they have been acquired by using the PRESS pulse sequence. To that end we have employed the classes and functions of the GAMMA C++ library. By using several versions of our PRESS-simulation program, we were able to study the single-voxel selection, required for detecting in vivo MRS signals. Furthermore, by introducing in one of the versions a modified spatial summation scheme, that comes down to crusher-gradient averaging, we could realize a decrease in computation time by about a factor of 256. We have used four different simulated metabolite basis sets in the quantification of a real-world 3T human-brain 1H MRS signal. The best quantification is obtained, when including into the simulation program -as closely as possible- the related details of the PRESS-based single-voxel selection Subject In vivo MRSquantificationmetabolite basis setsPRESS simulationGAMMA C++ librarysingle-voxel selectioncrusher gradientsjMRUI QUEST To reference this document use: http://resolver.tudelft.nl/uuid:93f0b2d0-53df-4302-a581-885ea937b1ce ISBN 978-90-73461-80-2 Source ICT OPEN 2012, Rotterdam (The Netherlands) 22-23 Oct., 2012 Part of collection Institutional Repository Document type conference paper Rights (c)2012 The Authors Files PDF veen-vander-ictopen2012_s ... on_411.pdf 1.94 MB Close viewer /islandora/object/uuid:93f0b2d0-53df-4302-a581-885ea937b1ce/datastream/OBJ/view