Measurements Using NMR Imaging Systems TRIZ Cases

Separate cooling loops and state-based flow control cut MRI pump energy use while maintaining cooling for magnets and exam-mode components.

Layered dual-sided flexible coil elements let MRI receive coils overlap without direct conductor contact, cutting shorts, weight, and build complexity.

Localized cooling channels target hot RF coil end rings in MRI assemblies, cutting airflow demand while maintaining stable temperatures.

A linked winding and infusion cavity joins MRI main and shield coils to simplify superconducting magnet assembly and improve stability.

Measured MRI field data trains a machine learning shim pattern prediction that cuts manual tuning time while improving repeatable homogeneity.

A central controller uses rules and component states to choose MRI idle modes that save energy without long reactivation delays.

A central controller selects MRI standby states from component conditions and rules to save energy without exceeding required readiness time.

A low-resolution MRI adjustment prescan sets both physical and geometric parameters, cutting extra prescans and motion-related image loss.

Multiple under-sampled k-space shots with different patterns are jointly reconstructed to cut ghosting and improve MRI image SNR.

A model-based MRI reconstruction uses echo-in and echo-out matrices to suppress overlapping echo artifacts without longer scan time.

Overlapping crusher gradients between refocus pulse groups shortens echo time while preserving volume selection precision and slice characteristics.

A hybrid coupler and PIN diode T/R switch broadens 3T/7T MRI operation while improving power handling, isolation, and rise time.

Offset planar spiral k-space trajectories with constant radial speed reduce B0-induced blurring while preserving MR imaging efficiency.

Live 2D MRI images and a contrast intensity plot enable auto-triggered post-contrast acquisition with less operator timing error.

A movable MRI RF coil keeps loop coupling nearly constant along a set path, reducing interference while preserving uniform sensitivity.

Single-scan DCE-MRI combines high-temporal K-space data with complex averaging to preserve timing while improving SNR and morphology.

A single MRI sequence combines R1 and R2 sensitizing phases with multi-echo acquisitions to calculate tissue properties more accurately in less scan time.

A dual-module VSASL sequence suppresses background tissue signals without extra BS pulses, improving temporal SNR while reducing RF exposure.

By optimizing slice position and readout gradient, this case extends MR field of view while correcting edge distortions and artifacts.

Simultaneous multi-segment RF excitation extends reduced-FOV MRI to full coverage while preserving high spatial resolution and lower distortion.

Shifting and stretching MR gradient lobes cuts acoustic noise in Dixon water-fat imaging while preserving flexible echo timing.

Passive magnetic field sensing helps a manually driven MRI subject table improve positioning accuracy without losing manual operability.

MR signal-based coil position detection identifies RF coil front/back orientation, enabling accurate element selection for diagnostic MRI scans.

Sequential gas delivery calibrates MRI deoxyhemoglobin signals to convert relative susceptibility into absolute brain SaO2 and OEF.

By shifting fat signals out of phase in SSFP MRI, this case improves detection of mild fatty infiltration without extra imaging sequences.

A four-echo SSFP MRI sequence generates synthetic CT and multiple contrasts in one scan, cutting acquisition time and patient burden.

Scaling reference-data intensity across SMS-HASTE time portions preserves contrast, reducing slice cross-talk and motion artifacts in MRI.

Navigator phase changes enable real-time MRI RF frequency correction during each TR, improving image and spectral quality without calibration scans.

Separated magnet-coil assemblies create an x-ray gap that integrates CT and MRI while limiting magnetic interference and scan delays.

An AV/IP gateway converts non-IP audio and video links into MRI network traffic, enabling bore infotainment and remote expert communication.

A multi-submodel AI generates T1, T2, and T1rho maps from fewer MR images, cutting scan time and motion artifacts in one scan.

Optimized flip angles in variable flip angle CEST improve SNR and image resolution without k-space filtering noise amplification.

Phase unwrapping across the full MRI time series corrects B0 inhomogeneity errors, reducing artifacts and improving Dixon water-fat separation.

A trained CNN uses reference and image MRI data to separate instrumentation bias from anatomy and produce more uniform diagnostic images.

A single gradient echo routine combines B0 and B1 mapping in under 20 seconds, reducing MRI scan time and field-related errors.

Quadratic interpolation restores undersampled MRI K-space points more accurately than first-order methods, reducing artifacts and improving image quality.

Pre-contrast proton density images guide motion and intensity correction in dynamic MRI, improving myocardial perfusion defect localization.

Frequency and phase offsets compensate B0 field deviations in pCASL RF pulses, improving labeling efficiency and perfusion imaging quality.

Initial FOV and positioning images are used to auto-adjust FOV or coil channel weights, preventing phase-encoding aliasing without manual reset.

Sub-slab B1+ shimming combines subject-specific transmit settings into a multiband RF pulse for more uniform slab excitation in ultra-high-field MRI.

Optimized dummy RF scans restore steady magnetization after body motion, cutting MRI re-measurement time while suppressing artifacts.

By estimating SAR from selected local hotspots and RF shimming parameters, this case cuts MRI computation load while preserving accuracy.

Offset acquisition windows across pulse sequence groups enable image synthesis that suppresses fat artifacts when slice thickness or RF bandwidth is limited.

MLP-trained GRAPPA kernels correct spatially varying field imperfections in single-polarity EPI, reducing MRI ghosting without longer scans.

Precomputed gradient-specific factors speed MR protocol noise optimization while preserving safety compliance and reducing test time.

Simultaneous multi-slice MRI with compressed sensing cuts whole-heart cine scan time and avoids multiple breath-holds through slice reconstruction.

Joint SAR calculation across multiple nuclides and RF coil channels improves hotspot control, pulse design freedom, and MRI image quality.

Frequency-swept chirped-CPMG pulses improve low-field MRI signal-to-noise ratio while shortening acquisition time and supporting better surgical access.

Selecting the strongest virtual channel for slice phase correction cuts multi-segment MRI phase errors and parallel imaging artifacts.

A second MRI scan captures external noise for subtraction from imaging data, improving SNR while reducing shielding space and cost.

Non-overlapping MRI coils and MB-SWIFT enable simultaneous brain and spinal cord imaging with fewer artifacts and shorter scans.

Frequency- and temperature-dependent resistance calculations predict capacitor voltage drops before MRI pulse sequences run.