Difference between revisions of "Hardware:SourceCode"

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[[File:SE_PROJ_GUI_projection_multitube.png|600px|thumb|right|SE_PROJ_GUI]]
 
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IMAGING_GUI_1 lets students acquire a 2D spin echo image (no slice-direction encoding).  Students must set the maximum gradient amplitude for the readout and phase encoding gradients in order to achieve the desired FOV.  The GUI displays the acquired k-space data.  Students then process k-space offline with the FFT to create the image.   
 
IMAGING_GUI_1 lets students acquire a 2D spin echo image (no slice-direction encoding).  Students must set the maximum gradient amplitude for the readout and phase encoding gradients in order to achieve the desired FOV.  The GUI displays the acquired k-space data.  Students then process k-space offline with the FFT to create the image.   
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[[File:IMAGING_GUI_2_screenshot.png|600px|thumb|right|IMAGING_GUI_2]]  
 
[[File:IMAGING_GUI_2_screenshot.png|600px|thumb|right|IMAGING_GUI_2]]  
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IMAGING_GUI_2 automatically computes read and phase encoding amplitudes for a desired FOV and resolution.  Students can acquire 2-D spin echo and turbo spin echo (RARE) data and view the resulting images inside the GUI.
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[[File:IMAGING_GUI_3_with_image.png|600px|thumb|right|IMAGING_GUI_3]]
 
[[File:IMAGING_GUI_3_with_image.png|600px|thumb|right|IMAGING_GUI_3]]
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IMAGING_GUI_3 acquires 3-D turbo spin echo images and displays the results in a separate window.
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Revision as of 11:02, 23 August 2013

Click here to download Matlab GUI files for running the labs used in MIT 6.S02.



Description of GUIs

The GUIs let students acquire data, view the Fourier transform of the data on-screen, vary basic pulse sequence parameters (such as TE and TR), and save the raw data to a Matlab .mat file.


FID_GUI

alt text

The FID GUI lets students acquire a free induction decay and see the Fourier transform (lineshape). The GUI also lets students run a flip angle calibration to find the 90 deg and 180 deg RF pulses amplitudes. The shim can be set either using the "auto shim" tool or by hand using the slider bars or text fields.









SE_PROJ_GUI

FID_GUI


The spin echo/projection GUI shows the evolution of the spins in a two-pulse experiment with and without dephase/rephase gradient lobes. Students can see the effect of shimming on the shape of the spin echo. They can also see how applying gradient lobes along each direction creates a 1-D projection of the object instead of a narrow lineshape.



SE_PROJ_GUI












IMAGING_GUI_1

IMAGING_GUI_1

IMAGING_GUI_1 lets students acquire a 2D spin echo image (no slice-direction encoding). Students must set the maximum gradient amplitude for the readout and phase encoding gradients in order to achieve the desired FOV. The GUI displays the acquired k-space data. Students then process k-space offline with the FFT to create the image.








IMAGING_GUI_2

IMAGING_GUI_2

IMAGING_GUI_2 automatically computes read and phase encoding amplitudes for a desired FOV and resolution. Students can acquire 2-D spin echo and turbo spin echo (RARE) data and view the resulting images inside the GUI.









IMAGING_GUI_3

IMAGING_GUI_3

IMAGING_GUI_3 acquires 3-D turbo spin echo images and displays the results in a separate window.












PAST BUG FIXES / REVISIONS


PENDING BUG FIXES / REVISIONS


  • create a launchpad with buttons for quickly opening all of the GUIs
  • allow user to use "stop" button during auto-shimming
  • add gradient echo sequence (FLASH)
  • add slice-select pulse sequence
  • clean up any remaining timing errors in spin echo and RARE sequences
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