DENSE MRI Cardiac Strain Analysis Using Meshfree Radial Point Interpolation

The patent replaces traditional mechanical/image-based tag tracking with magnetic phase encoding. The DENSE technique encodes displacement information directly into the phase of MRI signals, allowing displacement and strain calculation through phase differencing rather than visual tag tracking. This substitution of measurement mechanism enables both high spatiotemporal resolution and rapid processing.

The patent changes the fundamental parameter used for motion tracking from spatial tag patterns to phase encoding values. By encoding displacement in the phase domain rather than spatial domain, the system achieves higher precision measurement and faster computation. The phase information provides direct quantitative displacement data without requiring post-processing image analysis.

The patent replaces complex post-processing algorithms that analyze tag motion with direct phase-based displacement measurement. The DENSE technique encodes displacement information in the phase of stimulated echoes, allowing strain calculation through simple phase differencing and numerical differentiation, eliminating the need for lengthy image processing while improving measurement precision.

The patent performs displacement encoding during the MRI signal acquisition itself rather than requiring separate post-processing steps. The phase information is encoded into the signals during the imaging process, so displacement and strain data are readily available immediately after reconstruction, significantly reducing operation duration.