A contrast enhancement (CE) agent is infused into blood flowing through a site that is to be imaged with magnetic resonance imaging (MRI). Two double inversion procedures are carried out, forming a quadruple inversion recovery (QIR) pulse sequence. Each double inversion procedure comprises a non-selective and slice-selective inversion RF pulse. The first double inversion procedure is followed by a first predefined inversion delay period, TI.sub.1, and the second procedure by a second predefined inversion delay period, TI.sub.2. A black-blood image can thus be produced in which blood appears consistently black and tissues surrounding the blood, such as a vessel wall, heart, atherosclerotic plaque, or thrombus, are clearly visible. Unlike the prior art black-blood imaging technique, the QIR method does not require a precise knowledge of the T.sub.1 of the blood carrying the CE agent in order to suppress the signal and artifacts caused by the blood flowing through the site.

 
Web www.patentalert.com

< Imaging system

< Indole compound

> Scheduling and planning maintenance and service in a network-based supply chain environment

> Neural interface system with embedded id

~ 00606