Combination of a radial sequence for in vivo DTI of articular cartialge with an iterative model-based reconstruction
Jose G Raya 1 , Florian Knoll 1 , Lauren Burcaw 1 , Sina Milani 1 , Daniel K Sodickson 1 , and Tobias K Block 1
New York University Langone Medical Center,
New York, NY, United States
We combine of a radial spin echo diffusion tensor
imaging (RAISED) sequence for DTI of articular cartilage
with a model-based iterative reconstruction, which
directly calculates the diffusion tensor without
reconstructing the intermediate diffusion-weighted
images. This adds flexibility to the data acquisition.
Purpose of this work was to assess value of different
acquisition strategies for a model-based reconstruction.
We tested four protocols with different resolutions,
b-values and acquisitions times. We compared our
model-based approach with the standard gridding
reconstruction. We found improvement of the DTI
parameters with the model based reconstruction and
identify an optimal protocol for RAISED.
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