Difference between revisions of "2010 Winter Project Week Fast Imaging Library + Siemens EPI"
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+ | ==Progress== | ||
+ | |||
+ | * On Acquisition | ||
+ | ** Single-shot EPI pulse sequence modified to include temporal encoding. | ||
+ | ** Data acquired on Siemens machine | ||
+ | ** Images reconstructed using EPI-GESTE show very low Nyquist ghosts, much lower than the product reconstruction code | ||
+ | [[Image:Hoge_ngc_igtpw_1.jpg]] | ||
+ | ** Double-shot EPI pulse sequence modified to include temporal encoding | ||
+ | ** PLACE method to remove ghosts works (but with loss of temporal resolution), EPI-GESTE still needs some work. | ||
+ | |||
+ | * On Reconstruction | ||
+ | ** EPI-GESTE Functor defined for Siemens ICE processing chain | ||
+ | ** NCIGT Fast Imaging library linked into functor | ||
+ | ** currently debugging the functor | ||
==Background== | ==Background== |
Latest revision as of 01:04, 8 January 2010
Home < 2010 Winter Project Week Fast Imaging Library + Siemens EPIContents
Key Investigators
- BWH: Scott Hoge
- Utah: Nick Todd, Dennis Parker
Objective
Incorporate improved EPI Nyquist ghost correction techniques and on-line parallel imaging reconstruction modules into the multi-shot EPI sequence used by the HiFU project at Utah.
Approach, Plan
Our plan for the project week is to ...
- modify the multi-shot EPI sequence to include temporal encoding
- integrate fast imaging library calls into ICE image reconstruction chain
Progress
- Temporal encoding of single-shot EPI complete. extending to segmented EPI sequence.
- Functor created to reconstruct acquired data in Siemens ICE framework
- Modified Functor Makefiles to link in NCIGT Fast Imaging Library
Progress
- On Acquisition
- Single-shot EPI pulse sequence modified to include temporal encoding.
- Data acquired on Siemens machine
- Images reconstructed using EPI-GESTE show very low Nyquist ghosts, much lower than the product reconstruction code
- Double-shot EPI pulse sequence modified to include temporal encoding
- PLACE method to remove ghosts works (but with loss of temporal resolution), EPI-GESTE still needs some work.
- On Reconstruction
- EPI-GESTE Functor defined for Siemens ICE processing chain
- NCIGT Fast Imaging library linked into functor
- currently debugging the functor
Background
- We have a new method for self-referenced EPI ghost correction (EPI-GESTE)
- Goal for the week: implement on Siemens, both pulse sequence changes and on-line recon
- temporal encoding of EPI data acquisition
- application of parallel imaging algorithms