Esaote S.p.a.

Andrea Serra

Paolo Pellegretti

Rosario Varriale

Amedeo Buonanno

Luca Balbi

Marco Vicari

Magnetic resonance imaging method and device, preferably using T2-weighted Fast Spin Echo (FSE) sequences, wherein a first set of magnetic resonance signals corresponding to predetermined phase-encoding gradients and at least one second set of received magnetic resonance signals, corresponding to further predetermined phase-encoding gradients, are acquired from the body under examination, using multi-echo sequences, such that echoes with the same echo index are assigned to different phase-encoding gradients, said first set and said at least one second set being entered into at least two corresponding k-space matrices, and the at least two k-space matrices being combined into a single k-space matrix from which an image is generated, wherein each k-space matrix is incompletely filled such that, for the same phase encoding gradients, one matrix contains the higher-intensity received signals, and at least another matrix contains no signal.

Magnetic resonance imaging method and device

A method of reconstructing an MRI or ultrasound biomedical image, based on compressed sensing includes exciting a body under examination; acquiring image data from the generated signals, wherein the signals are acquired by pseudo-random undersampling; reconstructing the image using a nonlinear iterative algorithm for minimizing an optimization function containing one or more terms for image data sparsity in one or more predetermined domains with a data fidelity constraint term ensuring fidelity to the acquired image data; wherein two or more sets of image data are acquired from the generated signals, each data set being acquired in a different undersampling scheme and/or a different acquisition mode such as to make expected and unavoidable artifacts incoherent; each of the acquired image data set is multiplied by a correction matrix &#x394;.

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Genoa, Italy

Andrea Serra