Invention Grant
- Patent Title: Quadruple inversion recovery for quantitative contrast-enhanced black blood imaging
- Patent Title (中): 用于定量对比增强黑血成像的四次反转恢复
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Application No.: US10740354Application Date: 2003-12-18
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Publication No.: US07715900B2Publication Date: 2010-05-11
- Inventor: Vasily L. Yarnykh , Chun Yuan
- Applicant: Vasily L. Yarnykh , Chun Yuan
- Applicant Address: US WA Seattle
- Assignee: University of Washington
- Current Assignee: University of Washington
- Current Assignee Address: US WA Seattle
- Agent Ronald M. Anderson
- Main IPC: A61B5/05
- IPC: A61B5/05

Abstract:
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, TI1, and the second procedure by a second predefined inversion delay period, TI2. 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 T1 of the blood carrying the CE agent in order to suppress the signal and artifacts caused by the blood flowing through the site.
Public/Granted literature
- US20040133098A1 Quadruple inversion recovery for quantitative contrast-enhanced black blood imaging Public/Granted day:2004-07-08
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