Measurements Using NMR Imaging Systems TRIZ Cases

An initial inversion pulse rotates magnetization to a specific angle before off-resonance saturation.

An NMR angle adjuster converts rotary motor motion into precise linear sample tube positioning using a dedicated conversion mechanism.

A magnetic resonance device applies variable temporal flip angle profiles to refocusing pulses during simultaneous multislice imaging.

Unit testing compares optimized magnetic resonance control commands with original parameters to prevent execution errors and maintain image data quality.

A calibration scan condition determining device selects coil element combinations and sets imaging parameters for magnetic resonance signal acquisition.

A motion likelihood map corrects CEST magnetic resonance image voxels by comparing measured z-spectra against reference criteria.

Concentric ring k-space trajectories coordinate partial RF pulses with gradient timing to maintain constant amplitude during excitation.

Dynamic phase and gain control across multichannel transmit arrays reduces specific absorption ratio while mitigating B1+ inhomogeneities.

Plasma gradient coils eliminate acoustic noise from Lorentz forces while maintaining strong magnetic field generation.

A method calculates neural similarities from captured EEG data to generate precise engagement measures.

Reference measurements correct patient movement artifacts in MRI k-space data without increasing device complexity.

Applying inversion pulses outside the examination area suppresses external interference signals, eliminating image artifacts caused by overlapping pulse ranges.

Dynamic phase adjustments eliminate image artefacts from rapid spatial saturation modes without hardware changes.

Processing circuitry estimates gradient coil temperature to stabilize cooling water flow before RF pulse center frequency drift occurs.

Merging DSC-MRI and DCE-MRI protocols into a single scan reduces patient contrast exposure while maintaining diagnostic reliability.

Segmenting frequency bands reduces imaging time and computation complexity while maintaining peak detection accuracy in Z-spectra.

Generates specific gradient fields that cancel B0 inhomogeneity and non-linearity distortions, enabling accurate imaging outside the standard field of view.

Dynamic gradient amplitude modulation in CAIPIRINHA readouts accelerates acquisition speed by concentrating higher sampling density near the k-space center.

Interleaving echo signal generation across distinct sub-volumes reduces stimulated echo scan time while maintaining image quality.

Geometric transformations convert constrained optimization into separable forms, reducing computation time to enable real-time MRI imaging.

Composite foam former with flame-retardant shell reduces gamma attenuation, resolving PET-MR signal trade-offs.

Combining k-space datasets from distinct flip angles generates high-resolution MR images without increasing scan time.

Gradient echo sequences sample k-space to reconstruct T2-weighted images, reducing acoustic noise from coil oscillations.

RF probes measure magnetic field strength near PET detector modules to enable accurate combined imaging.

Selective sub-block repetition based on real-time motion thresholds reduces artifacts while maintaining signal-to-noise ratio and avoiding full scan latency.

Pairs spatially adjacent radial k-space profiles acquired in opposite directions to cancel phase errors from eddy currents and field inhomogeneities.

A 3D balanced steady-state free precession sequence generates arterial spin labeling images using subsampled magnetic resonance data.

A magnetic resonance imaging apparatus adjusts the field of view stretch factor in the phase encode direction to capture the object region accurately.

Optical magnetometer receiving unit replaces copper coils to boost signal-to-noise ratio at lower field strengths, reducing artifacts.

A mono-disperse dextran solution enables magnetic resonance imaging assessment of tissue vascular permeability without radioactive or paramagnetic labels.

Dynamic flip angle adjustment optimizes signal decay patterns to minimize specific absorption rate while preventing echo shifting artifacts.

Segmented gradient-echo acquisition measures R1, R2, proton density, and apparent diffusion coefficient simultaneously.

A radial magnetic resonance pulse sequence optimization method determines gradient amplitudes and increases for individual k-space sections based on orientation.

A magnetic resonance apparatus reuses optimized gradient curves for repeating pulse sequences to accelerate imaging speed.

Differentiated k-space sampling densities resolve compressed sensing artifacts while maintaining strict echo time compliance.

A Dixon imaging method segments blood vessels to compensate for flow-induced amplitude and phase variations in single-echo MR images.

Spiral-in-out bSSFP sequences extend TR to reduce banding artifacts in low field cardiac imaging via L+S reconstruction.

A pulse sequence reduces gradient transitions to one per repetition interval, allowing the readout gradient to serve as the next selection gradient.

Simulation-based resting periods determine interference suppression parameters, reducing adaptation overheads and eliminating complex shielding booths.

Zero-magnetization sequences apply RF and spoiler gradient pulses to reset magnetization, reducing imaging time for accurate MRF parameter estimation.

A magnetic resonance imaging apparatus applies inversion radio frequency pulses to adjacent slices within a single cycle to capture multiple image contrasts.

Integrating the RF shield as a ground conductor reduces shielding material volume while maintaining signal integrity in hybrid imaging arrays.

An optimization process calculates the b0 value from multiple diffusion weighted images, reducing noise in gradient nonlinearity correction.

Position monitoring detects spatial deviations during acquisition, triggering sensitivity map reacquisition to eliminate image artifacts caused by misalignment.

A 3D oscillating gradient prepared sequence separates diffusion encoding from signal acquisition to improve imaging speed.

A convolution kernel trained on central k-space data reconstructs undersampled peripheral regions in MRI channels.

Dual-acquisition gradient-echo imaging sequence uses partial echo acquisition to separate water and fat signals in magnetic resonance systems.

Gradient echo trains supplement k-space data during parallel MRI acquisition, reducing pre-experiment waiting time and correcting movement artifacts.

A phase-describing map optimization method using min-cut max-flow algorithms for magnetic resonance imaging.

Acquiring a multi-echo gradient train generates phase error maps that separate silicone from fat, resolving ambiguity in MRI scans.