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:
Aug. 16, 2016
Filed:
Mar. 14, 2013
Bastien Guerin, Cambridge, MA (US);
Lawrence L. Wald, Boston, MA (US);
Elfar Adalsteinsson, Belmont, MA (US);
Bastien Guerin, Cambridge, MA (US);
Lawrence L. Wald, Boston, MA (US);
Elfar Adalsteinsson, Belmont, MA (US);
The General Hospital Corporation, Boston, MA (US);
Abstract
Described here are a system and method for designing radio frequency ('RF') pulses for parallel transmission ('pTx') applications, and particularly pTx applications in multislice magnetic resonance imaging (“MRI”). The concept of “SAR hopping” is implemented by framing the concept between slice-selective excitations as a constrained optimization problem that attempts designing multiple pulses simultaneously subject to an overall local SAR constraint. This results in the set of RF waveforms that yield the best excitation profiles for all pulses while ensuring that the local SAR of the average of all pulses is below the regulatory limit imposed by the FDA. Pulses are designed simultaneously while constraining local SAR, global SAR, and peak power, and average power explicitly.