press_2d.m

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2D PRESS (voxel selective NMR) pulse sequence.

Syntax

    fid=press_2d(spin_system,parameters,H,R,K,G,F)

Description

The sequence selectively excites one voxel and records its NMR spectrum. This sequence must be called from the imaging.m context, which would provide H,R,K,G, and F.

Arguments

   parameters.ss_grad_amp - the two amplitudes of slice selection 
                            gradient, T/m

   parameters.rf_frq_list - cell array of two vectors of RF frequ-
                            encies at each pulse slice, Hz

   parameters.rf_amp_list - cell array of two vectors of RF 
                            amplitudes at each pulse slice, rad/s

   parameters.rf_dur_list - cell array of two vectors of pulse 
                            slice durations, in seconds

   parameters.rf_phi      - cell array of two pulse phases at 
                            time zero

   parameters.max_rank    - cell array of two maximum rank in the 
                            Fokker-Planck pulse operator (2 is 
                            usually enough)

   parameters.sp_grad_amp - crusher gradient amplitude, T/m

   parameters.sp_grad_dur - crusher gradient duration, seconds

Outputs

   fid - free induction decay of the NMR spectrum

Examples

See press_2d_example.m file in examples/imaging directory.

See also

press_voxel_2d.m, imaging.m, phase_enc.m


Version 2.1, authors: Ilya Kuprov, Ahmed Allami