Reconstruction of MR Images from Sparsely Sampled 3-D k-Space Data

Most magnetic resonance (MR) imaging techniques reconstruct images from fully sampled k-space datasets by direct inverse Fourier transform (iFT);[1] however, real-time 3D MR imaging sometimes results in low-resolution [2] or sparsely sampled k-space datasets.[3] Specifically, in mov-ing-table contrast-enhanced MR angiography (CE MRA) methods,[3] the patient table is continuously translated along the readout direction (x) while only a portion of the phased-encoded ky-kz plane is sampled (with typically acquisition of the centre of ky-kz plane favored over the periphery). Be