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:
Apr. 03, 2012
Filed:
Apr. 20, 2009
Walter R. T. Witschey, Philadelphia, PA (US);
Mark A. Elliott, Bryn Mawr, PA (US);
Ari Borthakur, Philadelphia, PA (US);
Ravinder Reddy, Gladwyne, PA (US);
Walter R. T. Witschey, Philadelphia, PA (US);
Mark A. Elliott, Bryn Mawr, PA (US);
Ari Borthakur, Philadelphia, PA (US);
Ravinder Reddy, Gladwyne, PA (US);
The Trustees Of The University Of Pennsylvania, Philadelphia, PA (US);
Abstract
A spin locked balanced steady-state free precession (slSSFP) pulse sequence combines a balanced gradient echo acquisition with an off-resonance spin lock pulse for fast MRI. The transient and steady-state magnetization trajectory is solved numerically using the Bloch equations and is shown to be similar to balanced steady-state free precession (bSSFP) for a range of T2/T1 and flip angles, although the slSSFP steady-state could be maintained with considerably lower RF power. In both simulations and brain scans performed at 7T, slSSFP is shown to exhibit similar contrast and SNR efficiency to bSSFP, but with significantly lower power.