Difference between revisions of "2008 IGT Project Week Fast Imaging Library"
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Team: Scott Hoge, Bob Kraft | Team: Scott Hoge, Bob Kraft | ||
| − | Goals: Further | + | Goals: Further integrate algorithms from the Fast Imaging Library (doc here: http://www.spl.harvard.edu/publications/item/view/1393) to enable interactive EPI measurements for perfusion, fMRI, and temperature monitoring using accelerated and efficient EPI-based MR acquisitions |
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Approach: | Approach: | ||
| − | * complete a mechanism to maintain the phase in our pMRI-UNFOLD-EPI acquisition technique, which is required for both temperature change estimation and EPI distortion correction | + | * complete a mechanism to maintain the phase in our pMRI-UNFOLD-EPI-PROPELLER acquisition technique, which is required for both temperature change estimation and EPI distortion correction |
* incorporate real-time hooks into EPI sequence, to provide interactive acquisitions | * incorporate real-time hooks into EPI sequence, to provide interactive acquisitions | ||
* start investigations into radial EPI | * start investigations into radial EPI | ||
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Results (to be completed and presented at the end of the week): | Results (to be completed and presented at the end of the week): | ||
| + | * extended accelerate short axis propeller epi to use partial Fourier | ||
| + | ** issues w/ recon pending due to susceptibility distortion from blade to blade | ||
| + | * implemented both double-sampled and 'racetrack' trajectory in epi psd, to collect self-ref data for b0 field map estimation | ||
| + | ** able to calculate relative phase changes using racetrack reference data | ||
| + | ** may be incompatible with unfold nyquist ghost removal method | ||
| + | * wfu epi psd updated to 3d | ||
| + | * modified fgre to use modular rthawk implementation | ||
| + | * rt epi not accomplished, due to difficulty getting rthawk to run on scanner | ||
| + | |||
| + | [[Image:igtweek08_fil_racetrack.png]] | ||
| + | Fig 1 from Roopchansingh MRM 50:839, 2003 | ||
| + | |||
| + | [[Image:igtweek08_grad_kx.png]] | ||
| + | |||
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| + | [[Image:igtweek08_grad_ky.png]] | ||
Latest revision as of 15:30, 12 December 2008
Home < 2008 IGT Project Week Fast Imaging LibraryBack to 2008_IGT_Project_Week#Projects
Team: Scott Hoge, Bob Kraft
Goals: Further integrate algorithms from the Fast Imaging Library (doc here: http://www.spl.harvard.edu/publications/item/view/1393) to enable interactive EPI measurements for perfusion, fMRI, and temperature monitoring using accelerated and efficient EPI-based MR acquisitions
Approach:
- complete a mechanism to maintain the phase in our pMRI-UNFOLD-EPI-PROPELLER acquisition technique, which is required for both temperature change estimation and EPI distortion correction
- incorporate real-time hooks into EPI sequence, to provide interactive acquisitions
- start investigations into radial EPI
Other Notes:
- This team will spend significant time on the MR scanner. Schedule here: http://calendar.yahoo.com/YYY,5107b4/srt,0/lmrc_ms_scanner/?v=2&t=1228608000
Results (to be completed and presented at the end of the week):
- extended accelerate short axis propeller epi to use partial Fourier
- issues w/ recon pending due to susceptibility distortion from blade to blade
- implemented both double-sampled and 'racetrack' trajectory in epi psd, to collect self-ref data for b0 field map estimation
- able to calculate relative phase changes using racetrack reference data
- may be incompatible with unfold nyquist ghost removal method
- wfu epi psd updated to 3d
- modified fgre to use modular rthawk implementation
- rt epi not accomplished, due to difficulty getting rthawk to run on scanner
Fig 1 from Roopchansingh MRM 50:839, 2003
