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:
Feb. 25, 2020
Filed:
Oct. 30, 2015
Siemens Healthcare Gmbh, Erlangen OT, DE;
Northshore University Healthsystem, Evanston, IL (US);
Shivraman Giri, Chicago, IL (US);
Robert R. Edelman, Highland Park, IL (US);
Siemens Healthcare GmbH, Erlangen, DE;
NorthShore University HealthSystem, Evanston, IL (US);
Abstract
A method for dual-contrast unenhanced magnetic resonance angiography includes iteratively acquiring flow-dependent slices and flow-independent slices in a region. Each iteration of the acquisition process comprises identifying a flow-dependent slice location within the region and identifying a flow-independent slice location upstream from the flow-dependent slice location according to blood flow in the region. Each iteration further includes applying a first radio frequency (RF) saturation pulse to the region such that MR signals from veins in the region are substantially suppressed, and applying a second RF saturation pulse to the flow-dependent slice location such that MR signals from background muscle and arterial blood in the region are substantially suppressed. A flow independent slice is acquired at the flow-independent slice location after the second RF saturation pulse is applied and before unsaturated arterial blood has maximally flowed into the region. After acquiring the flow-independent slice, a flow-dependent slice is acquired.