Dummy scans - first 5 volumes are always excluded from the dataset, never account for them.Phase encoding reversal (for B0 field mapping).Flow compensation gradients - allow to de-phase the blood flow in major and smaller arteries.Optimised slice spacing for this SPSP rf pulse min-max: 20-26 %.Spectra-Spatial (SPSP) excitation rf-pulse exciting water, not fat and saving time TR.RealTime fmri processing (BrainWaveRT) can be disabled.Physio-data sampling (Perfusion sensor, Respiration, ECG).Flexible image resolution and acquisition matrix.Improved epi ghost stability by the use of navigator signals, hence reduced temporal noise (measured by 4 echos for each slice).
#Niftiwrite matlab 2012 full
The minimum repetition time TR (sampling rate =1/TR) depends on number of slices: for full coverage 36-46 slices TR= 1.5 - 2.0 s.Minimum time per slice is 42 µs at TE=30 ms, (echo-spacing in EPI, esp = 440 - 460 µs at resolution nx= 64-72).Our gre-epi is a slightly modified version of the product pulse sequence The Gradient Echo EPI (echo-planar imaging) is a preferable option at 3 Tesla over spin echo or asymmetric spin echo. 4.4 Quantitative Susceptibility Mapping (QSM).4.3 MR Angiography, Venography (non-contrast).4.2 T1, T2, & T2* - relaxation times mapping.4.1 Magnetisation Transfer Imaging - qMT-MRI.3.5 Intra-voxel incoherent motion (IVIM).3.2 Diffusion Tensor Imaging MRI and TBSS processing.2.3 Surface Coils Intensity Correction "PURE™ ".
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