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. 17, 2012
Filed:
Nov. 16, 2007
Timothy J. Carroll, Chicago, IL (US);
Wanyong Shin, Baltimore, MD (US);
Jessy J. Mouannes, Elmwood Park, IL (US);
Timothy J. Carroll, Chicago, IL (US);
Wanyong Shin, Baltimore, MD (US);
Jessy J. Mouannes, Elmwood Park, IL (US);
Northwestern University, Evanston, IL (US);
Abstract
A method for calculating quantitative perfusion measurements using an MRI system includes a pulse sequence that acquires perfusion weighted images and additionally measures Tvalues before and after the administration of a contrast agent. Tvalues are measured by rapidly sampling a longitudinal relaxation curve and employed to determine the blood volume in tissue. A correction factor for the effect of water diffusion between blood vessels and the extravascular space is determined.