Journal of magnetic resonance imaging : JMRI
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J Magn Reson Imaging · May 2009
3D diffusion tensor MRI with isotropic resolution using a steady-state radial acquisition.
To obtain diffusion tensor images (DTI) over a large image volume rapidly with 3D isotropic spatial resolution, minimal spatial distortions, and reduced motion artifacts, a diffusion-weighted steady-state 3D projection (SS 3DPR) pulse sequence was developed. ⋯ A true 3D DTI pulse sequence with high isotropic spatial resolution was developed for whole brain imaging in under 20 minutes. To minimize the effects of brain motion, a cardiac synchronized, multiecho, DW-SSFP pulse sequence was implemented. Motion artifacts were further reduced by a combination of linear phase correction, corrupt projection detection and rejection, sampling density reweighting, and parallel imaging reconstruction. The combination of these methods greatly improved the quality of 3D DTI in the brain.
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J Magn Reson Imaging · May 2009
Fast dixon-based multisequence and multiplanar MRI for whole-body detection of cancer metastases.
To develop and demonstrate the feasibility of multisequence and multiplanar MRI for whole-body cancer detection. ⋯ Whole-body MRI offering essentially all the most optimal tumor-imaging sequences in a typical 1-hour time slot can potentially become an appealing "one-stop-shop" for whole-body cancer imaging.