Measurements Using NMR Imaging Systems TRIZ Cases

Multi-echo MRI sequences acquire images at varying echo times to create a scaled mask that removes susceptibility artifacts from metallic implants.

Retrospective factor selection balances gradient moment mismatches without extending patient scan time, reducing artifacts and phase errors.

Segmented shielding layers coupled by a bus bar reduce electromagnetic interference in MRI environments without increasing device weight.

Separating least square fitting from constraint processing reduces repetitive calculations and blurring to generate high-quality diffusion kurtosis images.

Inverted gradient moments in Dixon TSE sequences combine echo trains to restore image sharpness.

Calibration blades generate reconstruction weights to synthesize missing undersampled k-space data, resolving scan time versus image quality trade-offs.

Multiple RF coils deliver interleaved saturation pulses to accelerate chemical exchange saturation transfer imaging.

Compensating RF control waveforms prevents amplifier overshoot and undershoot during rapid intensity changes, ensuring accurate image reconstruction.

Sinusoidal gradient waveforms reduce acoustic noise in MRI systems while enabling larger tip angles and expanded contrast options.

Magnitude fitting extracts phase errors from bipolar gradient data to enable accurate fat quantification without specialized calibration sequences.

Dynamically adjusting gradient pulse rise times minimizes dB/dt values and acoustic noise while maintaining imaging speed in magnetic resonance systems.

Combining multiband and PINS pulses reduces specific absorption rate limits while maintaining temporal efficiency in simultaneous multi-slice MRI acquisitions.

Adaptive filtering subtracts reference interference signals from magnetic resonance data, reducing artifacts by 36 dB without complex shielding.

Modulated magnetic fields and blind source separation isolate blood flow signals from cardiac motion artifacts in MRI scanners.

Front-loaded sampling in Sh-MOLLI reduces imaging time and breath-hold duration while maintaining T1 mapping accuracy.

Segmented SPIR and CHESS pulses stabilize fat signal suppression across non-uniform magnetic fields, reducing imaging time.

A saturation band MRI method adjusts slice selection gradient polarity to direct chemical shifts away from the region of interest.

An information MR dataset resolves phase ambiguities in Dixon methods by providing independent verification for unambiguous global spin species assignment.

An intermediary file converts MRI sequences across incompatible development environments, resolving manufacturer-specific code barriers.

Synchronized switching frequencies across gradient amplifier bridges eliminate uneven power distribution and thermal stress.

Interleaving partial k-space measurements across distinct data sets reduces motion sensitivity and prevents residual magnetization artifacts.

Positioned on a radial path, the magnetic correcting element counters perturbations from rotating ferromagnetic gantry components to maintain field homogeneity.

An automated method creates amended imaging sequence copies with modified parameters for storage in a measurement queue.

Phase contrast MRI analyzes phase artifacts to quantify induced radio frequency currents, replacing invasive probes and reducing measurement time.

Optimizing gradient pulse timing reduces concomitant field phase errors, enabling simultaneous multi-slice imaging with improved signal-to-noise ratio.

A scan interface displays live images and contrast plots to visualize bolus arrival for automated triggering.

Non-linear magnetic field gradients enable precise spatial magnetization changes in MRI systems.

Shielded cavities with non-ferrous conductive surfaces block electromagnetic interference, preserving MRI image quality while enabling audio-visual delivery.

An MR system interleaves supplementary imaging during scanner idle periods to maximize utilization.

Analyzes temperature changes during power input using existing sensors to monitor cooling performance, eliminating expensive flow sensor networks.

A computer-implemented method corrects k-space data subsets using non-linear motion estimation functions to align signals from excited hydrogen atoms.

Randomized k-space sampling enables compressed sensing reconstruction of partial data acquired during segmented 3D MRI scans.

Cycling RF pulse phases in magnetic resonance imaging enables rectangular wave saturation pulses for enhanced signal detection.

Variable flip angles in a SPACE sequence reduce measurement time and specific absorption rate while maintaining high-resolution image quality.

Harmonic analysis derives 3D distortion vectors from phantom scans to correct spatial accuracy in magnetic resonance imaging.

A chemical-shift based signal model estimates R2* values using complex multi-echo MRI data.

Neural network optimizes magnetic resonance fingerprinting acquisition parameters to enhance signal discrimination between quantitative tissue properties.

A hybrid atomic force microscope and nuclear magnetic resonance probe integrates nanofabricated radiofrequency coils to detect single cellular structures.

Adapting radial spoke angles to non-circular shapes eliminates undersampling artifacts in larger dimensions while maintaining uniform sampling density.

Dynamic steady state control via variable flip angles reduces specific absorption rate by 10 to 30 percent while preserving blood-myocardium contrast.

A mode switching part controls the gradient power supply circuit system in an MRI apparatus to manage startup and shutdown states based on operational triggers.

MB-SWIFT segments frequency sweeps into spaced RF pulses to resolve short T2 signals without exceeding RF amplifier power limits.

Alternating predefined time segments simplify MRI sequence construction, reducing developer burden while maintaining configuration versatility.

Modified variable-density sampling patterns maximize k-space coverage to support sparse reconstruction algorithms.

Location-dependent regularization parameter adapts compressed sensing reconstruction to local sensitivity maps for signal-to-noise improved MR images.

Calculates frequency maps from ultrashort echo time MR data by reconstructing phase images and isolating specific signal contributions.

Thinner conductive rung sections minimize radiation beam attenuation in MRI-guided therapy while preserving RF emission uniformity.

A magnetic resonance imaging apparatus calculates correction fields using pre-measured secondary error data to cancel induced eddy current effects.

Synchronizing k-space trajectories maintains defined contrast during magnetic resonance imaging acquisition.

A magnetic resonance imaging body coil detects subject position via scattering parameter curves to center the examination table.