Magnetic Measurements TRIZ Cases

This case shows how a conductive line controls current density to form and move magnetic domains without added writing hardware.

Secondary coil references correct pilot tone signals to reduce interference artifacts and improve movement information accuracy during magnetic resonance scans.

Segmenting the seed layer into distinct widths reduces pulse width fluctuations and shield-to-shield spacing to improve cross-track resolution.

Segmented breast phantom segments mimic tissue anatomy to resolve manufacturing precision versus simulation accuracy trade-offs.

RF coil design uses openings and capacitors to minimize eddy currents induced by gradient coils, reducing acoustic noise.

Autocorrelation analysis determines coil weights without sensitivity estimation, removing aliasing artifacts in MRI.

Detecting axial and tangential magnetic field components allows side-shafted mounting, resolving inflexibility in non-coplanar sensor configurations.

Variable flip angle refocus pulses reduce specific absorption rate during non-contrast magnetic resonance angiography.

A variable flip angle MRI spin echo design method tracks spin-locked magnetization using T1ρ decay constants to determine RF pulse amplitudes.

A multi-echo magnetic resonance imaging sequence acquires anatomical and temperature data in a single scan.

Navigator signals generate a data-consistency weighting matrix to separate motion-corrupted k-space points from clean data in deep learning reconstruction.

An EEG-based system anticipates patient motion to reduce imaging artefacts and ensure precise radiation delivery without mechanical restraint.

A multi-frequency RF coil uses a frequency-shifting circuit loop to enable prescan calibration at sodium frequencies.

A magnetic field sensor uses dual full bridge circuits to generate feature and edge signals for ferromagnetic target detection.

Dynamic vibration frequency adjustment resolves poor user experience in head-mounted device gaming by matching scene dynamics.

Replacing wired assemblies, this wireless buckle uses magnetic field detection to report latch states while reducing power consumption.

Cortical profiles map tracer uptake at varying projection depths to quantify amyloid brain plaque in PET images.

Separate monitoring and heating coils with distinct frequencies allow continuous thermal control without interrupting treatment.

Freely-shaped RF pulse waveforms optimize excitation homogeneity across the imaging volume.

Back EMF and acoustic sensors feed a neural network that predicts gradient coil failures, enabling proactive maintenance and reducing MRI downtime.

Adiabatic inversion pulses in DIR UTE sequences suppress long T2 signals, resolving contrast loss from overlapping tissue responses.

A vertical Hall sensor element uses non-conductive barrier regions to redirect operating current deeper into the semiconductor substrate.

Segmented soft magnetic bodies block external interference from degrading current detection accuracy without blocking the conductor's primary flux.

Digital IIR filter predistorts input signals to compensate for eddy current distortions and inter-coil correlations during rapid gradient switching.

A Hall-effect sensor tracks magnetic carrier rotation in a vortex flow path, resolving measurement precision issues caused by opaque agricultural fluids.

An optimization function determines spatial distribution of shim elements, reducing mechanical force while maintaining B0 field homogeneity.

A dual capping layer reduces magnetic coupling in a magnetoresistive sensor stack to improve domain control.

Mixed oxide function layer enhances spin filtering to increase magneto-resistance ratio and stability.

Opposing current flow in segmented Hall branches cancels offset voltage interference and heating while increasing magnetic sensitivity.

Low-field NMR detects sex-specific signal ratios in intact egg blood vessels, eliminating invasive sampling and reducing ethical concerns.

Temperature variation calculations adjust ferromagnetic body heat to compensate for current errors, avoiding time-consuming mechanical adjustments.

A current sensor uses opposing bias magnetic fields on two magneto-sensitive portions to cancel disturbing fields without a shield.

An internal switched mode power supply with a step-down transformer minimizes current lead size and heat leak for compact superconducting magnets.

A spin current magnetization rotational element uses an asymmetric lamination structure to generate pure spin current via the spin Hall effect.

Integrating X and Z sensing axes on a single chip eliminates multi-slice mounting errors, improving angle measurement precision.

An integrated back-bias magnet on a TMR sensor chip enables absolute position measurement while reducing package size and cost.

Separating gradient magnetic field waveforms into frequency bands enables precise electric load calculation, optimizing imaging conditions within power limits.

Feedback control drives cancellation coils to nullify external magnetic fields, enabling precise faint field detection without bulky shielding.

Varying shield plate permeability breaks line symmetry, reducing inter-shield magnetic field components that degrade measurement accuracy.

A compact system injects RF power directly into an accelerator cavity using a hermetic high voltage break.

Phase-locked loop method cancels power-line ground-return current interference during magnetic field measurements on buried pipelines.

A Hall Effect sensor strut assembly detects arm pivot angles to generate real-time shooting form alerts.

Patterned hard magnetic layers direct flux to set exchange pinning directions on a single substrate during thermal annealing.

Merging PET with MRI provides high-time-resolution perfusion and diffusion data to differentiate metabolic disturbances from transport issues.

Linear transforms generate orthogonal virtual coils for B1 mapping, reducing imaging session time while maintaining spatial uniformity correction accuracy.

Electronic switching of antenna elements replaces mechanical rotation, eliminating coupling issues and accelerating data acquisition.

Magnetization reversal pulses adjust longitudinal components to emphasize arterial blood signals in MRI scans.

A pilot tone signal processed by independent component analysis separates cardiac movement data from magnetic resonance receiver coil outputs.

Segmenting motion correction into prospective and retrospective stages reduces artifacts while managing computational complexity.

Auto-calibrating current sensor IC compensates for misplacement errors by calculating position via electromagnetic model, eliminating manual calibration.