Difference between revisions of "Epi 2d.m"

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{{DISPLAYTITLE:epi.m}}
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{{DISPLAYTITLE:epi_2d.m}} __NOTOC__
 
2D echo planar imaging pulse sequence.
 
2D echo planar imaging pulse sequence.
  
 
==Syntax==
 
==Syntax==
  
     mri=epi(spin_system,parameters,H,R,K,G,F)
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     mri=epi_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==
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  parameters.pe_grad_dur  - the duration of the phase encoding
 
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                            gradient (X), seconds
  parameters.pe_grad_amp  - phase encoding gradient amplitude, T/m
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  parameters.ro_grad_dur  - the duration of the readout
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                            gradient (Y), seconds
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  parameters.image_size  - number of points in each dimension
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                            of the resulting image
 
   
 
   
  parameters.ro_grad_amp   - readout gradient amplitude, T/m
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  parameters.diff_g_amp   - [optional] a vector of diffusion
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                            gradient amplitudes in X,Y (T/m)
 
   
 
   
  parameters.grad_dur      - the duration of the gradients, seconds  
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  parameters.diff_g_dur  - [optional] the duration of the  
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                            diffusion gradient, seconds
  
 
==Outputs==
 
==Outputs==
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   mri - MRI image with square sinebell apodisation.
 
   mri - MRI image with square sinebell apodisation.
  
==Examples==
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==Notes==
See echo_planar_2d.m file in examples/imaging directory.
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This sequence must be called from the [[imaging.m]] context, which would provide H,R,K,G, and F.
  
 
==See also==
 
==See also==
[[dwi.m]], [[phase_enc.m]]
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[[imaging.m]], [[basic_1d_hard.m]], [[cpmg_dec.m]], [[epi_3d.m]], [[fse.m]], [[grad_echo.m]], [[phase_enc_2d.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]], [[spiral.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 19:36, 6 June 2026

2D echo planar imaging pulse sequence.

Syntax

    mri=epi_2d(spin_system,parameters,H,R,K,G,F)

Parameters

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

  parameters.ro_grad_dur  - the duration of the readout 
                            gradient (Y), seconds

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

  parameters.diff_g_amp   - [optional] a vector of diffusion 
                            gradient amplitudes in X,Y (T/m)

  parameters.diff_g_dur   - [optional] the duration of the 
                            diffusion gradient, seconds

Outputs

 mri - MRI image with square sinebell apodisation.

Notes

This sequence must be called from the imaging.m context, which would provide H,R,K,G, and F.

See also

imaging.m, basic_1d_hard.m, cpmg_dec.m, epi_3d.m, fse.m, grad_echo.m, phase_enc_2d.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, spiral.m, udd_dec.m, uhrig_times.m, Imaging_module, Mri_sequence_list, Built-in_experiments

Version 2.9, authors: Ilya Kuprov, Ahmed Allami