• Arvidas B Cheryauka, James N Lee, Alexei A Samsonov, Michel Defrise, and Grant T Gullberg.
• Center for Advanced Medical Technologies, Radiology Department, University of Utah, Salt Lake City, UT 84108, USA. Arvi.Cheryuaka@med.ge.com
• Magn Reson Imaging. 2004 Feb 1; 22 (2): 139-48.

AbstractMRI diffusion imaging is effective in measuring the diffusion tensor in brain, cardiac, liver, and spinal tissue. Diffusion tensor tomography MRI (DTT MRI) method is based on reconstructing the diffusion tensor field from measurements of projections of the tensor field. Projections are obtained by appropriate application of rotated diffusion gradients. In the present paper, the potential of a novel data acquisition scheme, PROPELLER (Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction), is examined in combination with DTT MRI for its capability and sufficiency for diffusion imaging. An iterative reconstruction algorithm is used to reconstruct the diffusion tensor field from rotated diffusion weighted blades by appropriate rotated diffusion gradients. DTT MRI with PROPELLER data acquisition shows significant potential to reduce the number of weighted measurements, avoid ambiguity in reconstructing diffusion tensor parameters, increase signal-to-noise ratio, and decrease the influence of signal distortion.

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