Measurements Using NMR Imaging Systems TRIZ Cases
- MRI Preparation Pulse Frequency Adjustment for Fat Saturation
Dynamic preparation pulse frequency adjustment optimizes fat saturation across magnetic resonance imaging target volumes.
- Multi-Echo MR Image Reconstruction via Segmented Signal Models
A multi-echo magnetic resonance method determines approximated images using distinct signal models for different parameters.
- MEMS Switch Decoupling for MRI Receive Coil Noise Reduction
A MEMS switch bypasses a tuning circuit to rapidly decouple an MRI receive coil, eliminating diode-based losses and preserving signal detection precision.
- Magnetic Resonance Stimulation Simulation via Gradient Change Detection
A magnetic resonance stimulation simulation method restricts calculations to gradient change time points.
- Multi-band RF Pulse Side-band Suppression in MRI
Deriving a pre-compensating term from side-band signals suppresses artefacts caused by RF hardware limitations during multi-band MRI scans.
- Parallel Multi-Slice MR Imaging With Dynamic Phase Encoding
Variable phase offsets across shots optimize reconstruction performance by reducing geometrical distortions and improving signal-to-noise ratio.
- MRI Water-Fat Image Reconstruction Using Multiple Fat Peaks
Reconstructs water and fat images from corrected positive-phase and opposed-phase MRI data using multiple spectral fat peaks.
- Parallel MR Imaging RF Coil Sensitivity Mapping via Stimulated Echo
A stimulated echo sequence acquires direct and conjugated signals from array and body coils to determine sensitivity profiles, reducing scan time.
- MRI Chemical Shift Artifact Correction via Adipose Voxel Analysis
Iterative intensity correction field stabilizes MRI signal using pure adipose tissue voxels.
- Simultaneous Multi-Slice TSE Imaging with Shared Echo Train
Shared echo trains unify modulation transfer functions across contrasts, resolving reconstruction inaccuracies and reducing Gibbs artifacts.
- B1 Map Correction for MR Image Intensity Uniformity
A B1 transmit shading correction algorithm adjusts magnetic resonance image intensity based on a calibrated field map.
- VISTA MRI Protocol for Intracranial Vessel Wall Imaging
Variable-flip-angle refocusing pulses in the VISTA protocol enhance intracranial vessel wall contrast.
- VIPR MRI Inversion Recovery for Temporal Resolution
Inversion recovery pulse sequences combined with radial sampling reduce acquisition time while maintaining spatial resolution.
- MRI Phase Correction Using Position-Dependent Weighting
A phase correction method applies position-dependent weighting to real space data acquired in opposite readout directions.
- MRI Scanning Protocol Optimization for Spatial Image Fidelity
Optimizing magnetic resonance scanning parameters within relevant volumes to enhance image quality.
- MRI RF Coil SAR Calculation via Input Reflection Coefficient
A magnetic resonance imaging system calculates specific absorption rate using radio-frequency coil input reflection coefficients.
- Learning-Based MRF Reconstruction Eliminates Dictionary Matching
Machine learning algorithms estimate tissue parameters directly from MR signal evolutions without dictionary matching.
- Parallel MRI Acceleration Optimization via Non-Integer k-Space Sampling
Non-integer acceleration factors minimize noise amplification and signal-to-noise ratio loss during three-dimensional parallel MRI acquisition.