Phase-contrast with interleaved undersampled projections

3D Dynamic Contrast-Enhanced Using Undersampled Golden-Radial Phase Encoding

INTRODUCTION: 3D Time-Resolved Dynamic Contrast Enhanced MRI (DCE-MRI) is an important tool to depict anatomic and dynamic information (bolus pass) of thoracic vessels. The current limitation of this application is the requirement of both high spatial and temporal resolution. Several methods have been proposed to overcome this problem [1-3], however, these techniques usually need an accurate ti...

Undersampled Phase Retrieval with Outliers: Supplementary Material

which set to zero yields the minimizer u− = s η + d. The minimization of f+(u) or f−(u) along the curve on which both functions are equal-valued, involves parameterizing this curve and minimizing f+(u) as a function of this parameter. These functions are equal when |u|2− y = y+ |s|2− 2|s|Re{ue}, which corresponds to the circle |u+ s|2 = 2(y+ |s|2). The parameterization then corresponds to the a...

Prospects for rapid CMRO2 quantification with interleaved TRUST, susceptometry-based oximetry, and phase-contrast MRI

INTRODUCTION: Cerebral metabolic rate of oxygen consumption (CMRO2) is believed to be a more direct measure of neurometabolic function than traditional measures such as CBF or BOLD fMRI. While regionalization remains a major challenge, MR-based methods for whole-brain CMRO2 quantification have the ability to robustly measure CMRO2 at baseline, in response to physiologic stimuli, and in a variet...

ECE 533: Report Vessel Branch Segmentation of Phase Contrast Vastly undersampled Isotropic PRojection Magnetic Resonance Imaging

Undersampled Phase Retrieval via Majorization-Minimization

In the undersampled phase retrieval problem, the goal is to recover an N -dimensional complex signal x from only M < N noisy intensity measurements without phase information. This problem has drawn a lot of attention to reduce the number of required measurements since a recent theory established that M ≈ 4N intensity measurements are necessary and sufficient to recover a generic signal x. In th...