Multiband spiral cardiac MRI with non-cartesian reconstruction methods

US11320506B2 · kind B2 · utility

Assignee

• University of Virginia Patent Foundation · US

Inventors

• Changyu Sun · Beijing, CN
• Frederick H. Epstein · Gaithersburg, US
• Yang Yang · Beijing, CN
• Xiaoying Cai · Brookline, US
• Michael Salerno · Durham, US
• Craig H. Meyer · Palo Alto, US
• Daniel Stuart Weller · Charlottesville, US

Key dates

• Filing date: Apr 8, 2020
• Grant date: May 3, 2022
• Expiry date: Sep 5, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30048
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A computerized method of reconstructing acquired magnetic resonance image (MRI) data to produce a series of output images includes acquiring a multiband k-space data set from a plurality of multiband slices of spiral MRI data; simultaneously acquiring a single band k-space data set comprising respective single band spiral image slices that are each associated with a respective one of the multiband slices in the multiband k-space data set; using the single band k-space data set, for each individual multiband slice, calculating a respective calibration kernel to apply to the multi-band k-space data set for each individual multiband slice; separating each individual multiband slice from the multiband k space data set by phase demodulating the multi-band k-space data using multiband phase demodulation operators corresponding to the individual multiband slice and convolving phase demodulated multi-band k-space data with a selected convolution operator to form a gridded set of the multi-band k-space data corresponding to the individual multiband slice.