Measurements Using NMR Imaging Systems TRIZ Cases

Standardizing RF field maps reduces calibration time while maintaining excitation homogeneity across subjects in high-field MRI.

Multiband radio frequency pulses generate contrast-encoded longitudinal magnetization across multiple slice locations substantially simultaneously.

A nuclear magnetic resonance apparatus converts three-dimensional frequency space data into hybrid space data for synthesized signal calculation.

A magnetic resonance simulation apparatus groups isochromats by physical magnetization properties to perform collective calculations.

Orthogonal reference scans determine constant, linear, and oblique phase errors to correct motion artifacts and Nyquist ghosts in Propeller EPI imaging.

Subtracting label and control acquisitions isolates flowing blood signals, eliminating safety risks from contrast agents while maintaining precision.

Optimizing adiabatic pulse parameters resolves high-field inhomogeneity to preserve image contrast and quality.

Synchronized motion of the magnet assembly and subject reduces artifacts during naturalistic movement studies.

High permittivity dielectric rods and fluid tubes adjust phase to correct patient loading distortion in high field MRI systems.

An adaptive SAR control system adjusts scan parameters based on measured patient mass and position.

Controller monitors magnet parameters to automatically control power supplies and discharge modules, reducing maintenance downtime during outages.

A magnetic resonance apparatus determines generation region differences to reuse existing reference data.

Peripheral-to-central slice ordering reduces motion-associated subtraction errors and artifacts in pseudo-continuous arterial spin labeling.

A high-frequency coil unit uses perpendicular partial coils to generate polarized magnetic fields.

Predictive inverse models determine voxel-wise magnetic susceptibilities, reducing iterative scan times and improving characterization throughput.

A magnetic resonance pulse sequence uses a refocusing RF flip angle evolution to generate an echo train from which multiple contrast weightings are extracted.

A multi-shot MRI method reconstructs magnitude and phase data separately to combine images and estimate full k-space datasets.

An MRI operation terminal identifies user roles to authorize specific system functions.

A multi-frequency MRI pulse sequence applies magnetic transfer pulses to enhance chemical exchange saturation transfer effects.

Sequence control circuitry inverts longitudinal magnetization and acquires k-space data using radial and Cartesian methods.

Attaching a fluorine compound to the balun allows T2* value calculation to monitor proximity and prevent overheating.

Merging transmit and receive field measurements into a single acquisition reduces de-phasing and eddy currents while improving signal-to-noise ratio.

A magnetic resonance calibration method generates complete data sets from undersampled measurements using phase homogeneity values.

A random blip gradient encoding scheme imparts randomized phase shifts to echo signals from multiple slice locations in simultaneous multislice MRI.

Interleaved slice acquisition in the STONE pulse sequence generates volumetric T1 maps during free breathing.

Warp prescan distortion maps to match main scan geometry for accurate image reconstruction.

Temporal coupling of reference and actual datasets prevents contrast differences and subject movement artifacts during reconstruction.

Asynchronous data streaming transfers coil sensitivity maps to graphical processing units for iterative compressed sensing reconstruction.

Dynamic angular coordinate adjustment compensates for motion-induced displacements, ensuring quasi-uniform k-space coverage and reducing image artifacts.

A sequence controller acquires MR signals across respiration cycles to fill k-space data for image reconstruction.

A multi-channel MRI spectrometer uses a synchronization module to coordinate RF coils via a master clock.

Steady-state imaging sequence generates multiple echo signals to extract susceptibility and conductivity biomarkers from a single scan.

Convex upward synthesized waveforms suppress gradient magnetic field noise while preserving application time and signal-to-noise ratio.

A time correction method adjusts gradient and RF pulse output times to synchronize reference points in MRI scanning cycles.

Interpolation estimates correction values for unrecorded partitions, reducing spatially varying eddy current effects and improving image quality.

MRI system optimizes simultaneous multi-slice sequence parameters to reconstruct images with minimized artifacts.

A magnetic resonance sequence arrangement method sorts diffusion encodings by b-value to minimize eddy current impact during imaging.

Processing circuitry generates three-dimensional volumetric images for intuitive slice positioning in magnetic resonance imaging.

Strategic angular offsets in undersampled regions prevent streaking artifacts, resolving the trade-off between scan speed and motion correction reliability.

A planning computer simulates MRI sequence effects on implants to optimize imaging parameters, preventing excessive heating and malfunction during examinations.

Constant slice selection gradient minimizes transition amplitude to lower acoustic noise while preserving image quality and scanning speed.

Image processing apparatus acquires MR signals while excluding data affected by external RF pulses from nearby MRI apparatuses.

A multi-echo MRI method estimates and removes eddy current phase errors using bipolar gradient sequences.

Segmented k-space sampling trajectories reduce scan time by up to 100-fold while maintaining parameter estimation accuracy.

A B0-mapping method computes static magnetic field distribution by combining spin-phase accruals with proton density estimates.

Randomly undersample k-space data and compute corresponding points at complex conjugate locations to maintain image quality.

An auxiliary magnetic field generator shifts the polarizing magnetic field strength during MRI relaxation periods to enhance image contrast.

An external coil inductively couples to a superconducting magnet main coil to induce current, eliminating liquid helium loss from heavy power supply leads.

Line integral convolution imaging uses multidirectional glyphs to visualize anisotropic diffusion profiles in magnetic resonance tomography data.