Measurements Using NMR Imaging Systems TRIZ Cases

A locally regularized pseudoinverse uses B0 field maps to correct EPI geometric distortion while suppressing noise hot spots.

A hybrid coupler MRI T/R switch uses microstripline matching and resonant circuits to widen 3 T and 7 T operation while handling high power.

Global parameterization of RF and gradient pulses keeps slice excitation uniform while cutting MRI sequence computation and contrast discontinuities.

A calibration unit with reflector, sensor, and adjusting elements corrects MRI laser marker misalignment without technician service.

Difference images and smooth manifold fitting refine CNN-deblurred MRI slices to produce more reliable B0 inhomogeneity maps.

A 3D magnetic field sensor derives patient table position from the MRI B0 stray field, removing reflector-based alignment and speeding setup.

Direct spherical Fourier reconstruction from 3D radial MRI samples avoids interpolation, preserving image quality with fewer samples.

Interleaved spectral bins and reversed gradient polarity cut MRI scan time while reducing metal-induced warping and residual artifacts.

Varying flip angles and TR values enables division-based correction of proton density, T2* effects, and coil sensitivity for more accurate T1 MRI.

Undersampled MRI data is decomposed into temporal basis functions and neural-network-refined spatial weights for rapid, accurate image sequences.

Fitted Z-spectrum scaling suppresses fluid-rich CEST signals, reducing field-inhomogeneity artifacts for clearer tissue differentiation.