Difference between revisions of "Phase enc 2d.m"

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{{DISPLAYTITLE:phase_enc.m}}
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{{DISPLAYTITLE:phase_enc_2d.m}} __NOTOC__
2D phase encoding imaging pulse sequence.
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2D phase encoding imaging pulse sequence with optional diffusion weighting during the echo time. This sequence must be called from the [[imaging.m]] context, which would provide H,R,K,G, and F.
  
 
==Syntax==
 
==Syntax==
  
     mri=phase_enc(spin_system,parameters,H,R,K,G,F)
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     mri=phase_enc_2d(spin_system,parameters,H,R,K,G,F)
  
==Description==
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==Parameters==
This sequence must be called from the imaging() context, which would provide H,R,K,G, and F.
 
 
 
==Arguments==
 
  
 
   parameters.t_echo        -  echo time, seconds
 
   parameters.t_echo        -  echo time, seconds
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  parameters.diff_g_amp    -  [optional] a vector of diffusion gra-
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                              dient pair amplitudes in X,Y (T/m) to
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                              be active during the echo time
 
   
 
   
 
   parameters.pe_grad_amp  -  phase encoding gradient amplitude, T/m
 
   parameters.pe_grad_amp  -  phase encoding gradient amplitude, T/m
 
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   parameters.ro_grad_amp  -  readout gradient amplitude, T/m
 
   parameters.ro_grad_amp  -  readout gradient amplitude, T/m
 
   
 
   
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                               gradient, seconds  
 
                               gradient, seconds  
 
   
 
   
   parameters.ro_grad_dur  -  the duration of the readout gradient,
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   parameters.ro_grad_dur  -  the duration of the readout gradient
 
                               seconds
 
                               seconds
 
   
 
   
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   mri - MRI image with square sinebell apodisation
 
   mri - MRI image with square sinebell apodisation
 
==Examples==
 
See phase_enc_2d.m file in examples/imaging directory.
 
  
 
==See also==
 
==See also==
[[epi.m]], [[imaging.m]], [[dwi.m]], [[spiral.m]]
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[[epi_2d.m]], [[imaging.m]], [[spiral.m]], [[basic_1d_hard.m]], [[cpmg_dec.m]], [[epi_3d.m]], [[fse.m]], [[grad_echo.m]], [[phase_enc_3d.m]], [[press_1d.m]], [[press_2d.m]], [[press_voxel_1d.m]], [[press_voxel_2d.m]], [[press_voxel_3d.m]], [[slice_select_1d.m]], [[spin_echo.m]], [[udd_dec.m]], [[uhrig_times.m]], [[Imaging_module]], [[Mri_sequence_list]], [[Built-in_experiments]]
 
 
  
''Version 2.1, authors: [[Ilya Kuprov]], [[Ahmed Allami]]''
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''Version 2.9, authors: [[Ilya Kuprov]], [[Ahmed Allami]]''

Latest revision as of 19:39, 6 June 2026

2D phase encoding imaging pulse sequence with optional diffusion weighting during the echo time. This sequence must be called from the imaging.m context, which would provide H,R,K,G, and F.

Syntax

    mri=phase_enc_2d(spin_system,parameters,H,R,K,G,F)

Parameters

 parameters.t_echo        -  echo time, seconds

 parameters.diff_g_amp    -  [optional] a vector of diffusion gra-
                             dient pair amplitudes in X,Y (T/m) to
                             be active during the echo time

 parameters.pe_grad_amp   -  phase encoding gradient amplitude, T/m

 parameters.ro_grad_amp   -  readout gradient amplitude, T/m

 parameters.pe_grad_dur   -  the duration of the phase encoding 
                             gradient, seconds 

 parameters.ro_grad_dur   -  the duration of the readout gradient
                             seconds

 parameters.image_size    -  number of points in each dimension of
                             the resulting image

Outputs

 mri - MRI image with square sinebell apodisation

See also

epi_2d.m, imaging.m, spiral.m, basic_1d_hard.m, cpmg_dec.m, epi_3d.m, fse.m, grad_echo.m, phase_enc_3d.m, press_1d.m, press_2d.m, press_voxel_1d.m, press_voxel_2d.m, press_voxel_3d.m, slice_select_1d.m, spin_echo.m, udd_dec.m, uhrig_times.m, Imaging_module, Mri_sequence_list, Built-in_experiments

Version 2.9, authors: Ilya Kuprov, Ahmed Allami