Measurements Using NMR Imaging Systems TRIZ Cases

Reorders slice acquisition across cardiac cycles to extend magnetization recovery times in magnetic resonance imaging systems.

Segmented movable RF neck coils shift along the bore axis to optimize proximity for cervical spine imaging across diverse patient sizes.

Measurement control unit modulates gradient magnetic field pulse waveforms to shift acoustic noise frequencies.

A magnetic resonance system calculates specific absorption rates for each bed position based on anatomical structure.

Alternating phase encoding directions in PROPELLER MRI blades eliminate shading and blurring artifacts from k-space data acquisition.

A magnetic resonance imaging system calculates specific absorption rate using patient body surface area to tailor radio frequency energy delivery.

Magnetic resonance imaging apparatus acquires cine images during longitudinal magnetization recovery periods.

Offline cohort optimization of universal RF pulse sequences maintains excitation homogeneity while eliminating time-consuming online numerical calculations.

Sinusoidal readout gradients and optimized phase-encoding sequences enable continuous k-space acquisition for magnetic resonance imaging.

Iteratively modifies MRI measurement sequences to maintain specific absorption rate limits.

MRI processing circuitry aligns slice selecting gradient magnetic field intensities for inversion and flip pulses to synchronize fat excitation positions.

A processor calculates maximum excitation pulse length based on field of view and gradient strength to optimize radio-frequency energy delivery.

Detects drive timing misalignment in MRI gradient coils using phase differences between positive and negative side projection images.

Automated detection of gradient coil types eliminates manual technician configuration, reducing labor costs and preventing hardware damage.

A sequence optimization unit analyzes magnetic resonance gradient pulses to identify modifiable time intervals for automatic parameter adjustment.

Slice-encoding gradient blips shift aliased pixels to resolve noise amplification and image quality degradation in echo planar imaging.

A k-space data correction method applies a signal variation model to normalize acquired magnetic resonance imaging data.

A multi-shot spiral magnetic resonance elastography pulse sequence acquires k-space data using variable-density readout gradients.

Dual-polarity GRAPPA computes reconstruction kernels from alternating readout gradient training data to separate simultaneously acquired slices.

A trained model processes MRI data segments to generate high-fidelity output images, resolving the trade-off between imaging time and image quality.

Reducing bone region electron density values in MR-based maps enables accurate radiation dose distribution comparison and quality control.

A magnetic resonance method records reference data during waiting periods of preparation pulses to reduce total acquisition time.

Dark modes in RF coil arrays produce cancellation electric fields that mitigate local SAR hotspots without compromising image fidelity.

Multiplying TOF MR data by an inverse coil sensitivity map suppresses background tissue signals.

MORF algorithm identifies motion-corrupted image frames during magnetic resonance fingerprinting acquisition.

Merges two point and single point Dixon protocols via interpolation to reduce acoustic noise while maintaining image quality.

Pre-measurement separates static and dynamic error components to correct k-space blade positions, eliminating artifacts from magnetic field inhomogeneity.

Modulation functions align undersampled raw and reference data characteristics, reducing reconstruction artifacts in parallel imaging.

Placing A/D converters at coil ports reduces noise interference and manufacturing costs.

Fast RF-enforced steady state pulse sequence controls magnetization to prevent T2 underestimation during short repetition time scans.

Multi-dimensional RF pulses perform phase encoding during excitation, reducing acquisition delays and improving imaging accuracy.

A magnetic resonance numerical simulation apparatus segments update formulas to compute only contributory spatial partial differentials for magnetization.

Three-dimensional phase encoding eliminates frequency gradients to resolve signal pile-up and distortion near metallic implants.

A quantitative scout acquisition predicts signal contrast throughout an MRI sequence to enable flexible navigator placement.

Coordinate transformation adapts scan parameters to limit values, reducing hardware underutilization and production costs.

Granule-filled phantom structure resolves unstructured phantom limitations by enabling localized sharpness assessment for spiral imaging sequences.

Iterative temporal fitting extracts T1, T2, and R2* maps from single acquisitions, resolving the trade-off between scanning speed and quantitative accuracy.

Segmented wall elements form axial channels that allow PET detector insertion without disassembling the MR/PET imaging system structure.

Buffer circuits decouple impedance and common-mode levels between stages, enabling independent optimization of gain and noise without degrading performance.

A probabilistic fiber tract atlas uses diffusion vectors to identify white matter structures in nervous system imaging data.

Segmenting protocol options by receiver coil type reduces user operation complexity and eliminates confusion during MRI setup.

Optimizing adiabatic radio-frequency pulse amplitude and sweep duration using preliminary B0 and B1 measurements to reduce specific absorption rate.

Adapting blade-specific field of view sizes to object dimensions reduces wrap-around artifacts and total acquisition time.

Dual acquisition MRI system determines reference coefficients to correct B1 inhomogeneity effects during T1 mapping.

Applying a flip pulse to rotate non-compliant magnetization vectors restores CPMG conditions, stabilizing echo amplitude and reducing RF energy deposition.

A slice selective zero echo time pulse sequence enables rapid 2D imaging of hard biological tissues.

Computing unit checks state scan parameters against permissible combinations for magnetic resonance examinations.

A mobile radio-frequency coil transmits location signals to a fixed receiver for automated alignment within the magnet bore.

A magnetic resonance imaging system calculates quantitative parameters by analyzing signal representations along opposite directions of a primary signal dimension.

A digital control signal adjusts high frequency pulse amplitude to prevent amplifier damage.