epri_msps

Apply MSPS randomization pattern to a gradient scheme.

Syntax:

pars_out = iradon_msps(pars, FBP)

Description:

Applies pre-calculated maximally spaced projection sequence (MSPS) to a gradient scheme. Sequences are stored in 'MSPS/MSPSNNindex.mat' files where NN is the number of angles. Only limited MSPS sequences are available for NN = 18, 36 and 72. pars - image parameters (structure) ~.G - gradient vector (float, G/cm, Nx3, N - number of gradients) ~.nP - number of projections (int) ~.nTrace - overall number of traces, including baselines, zero gradients etc (int) ~.gidx - index to convert projections into iradon_d2d_mstage layout (int, Nx1, N = nP) ~.service_idx - index to convert traces into projections (int, Nx1, N = nTrace) FBP - gradient scheme parameters (structure) ~.projection_order - order of projections (string, 'asis'/'msps') 'msps': apply the randomization pattern pars_out - experimental parameters with MSPS applied (structure) see description of pars

[1] G. Redler, B. Epel, H.J. Halpern, Maximally spaced projection sequencing in electron paramagnetic resonance imaging, Conc. Magn. Reson. B, 45 (2015) 33-45 DOI 10.1002/cmr.b.21280.

See also:

epri_msps_decrypt