The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2024
Filed:
Apr. 28, 2022
University of Virginia Patent Foundation, Charlottesville, VA (US);
The United States of America, As Represented BY the Secretary Department of Health and Human Services, Bethesda, MD (US);
Siemens Healthcare Gmbh, Erlangen, DE;
John P. Mugler, III, Charlottesville, VA (US);
Craig H. Meyer, Charlottesville, VA (US);
Adrienne Campbell, Washington, DC (US);
Rajiv Ramasawmy, Bethesda, MD (US);
Josef Pfeuffer, Erlangen, DE;
Zhixing Wang, Charlottesville, VA (US);
Xue Feng, Zion Crossroads, VA (US);
UNIVERSITY OF VIRGINIA PATENT FOUNDATION, Charlottesville, VA (US);
SIEMENS HEALTHCARE GMBH, Erlangen, DE;
THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICES, Bethesda, MD (US);
Abstract
Methods, computing devices, and MRI systems that reduce artifacts produced by Maxwell gradient terms in TSE imaging using non-rectilinear trajectories are disclosed. With this technology, a RF excitation pulse is generated to produce transverse magnetization that generates a NMR signal and a series of RF refocusing pulses to produce a corresponding series of NMR spin-echo signals. An original encoding gradient waveform comprising a non-rectilinear trajectory is modified by adjusting a portion of the original encoding gradient waveform or introducing a zero zeroth-moment waveform segment at end(s) of the original encoding gradient waveform. During an interval adjacent to each of the series of RF refocusing pulses a first gradient pulse is generated. At least one of the first gradient pulses is generated according to the modified gradient waveform. An image is constructed from generated digitized samples of the NMR spin-echo signals obtained.