Arterial blood flow and transit delay measurement using arterial spin labeling

Patent metadata

Field	Value
Publication number	US-8965480-B2
Application number	US-201113641458-A
Country	US
Kind code	B2
Filing date	Apr 14, 2011
Priority date	Apr 14, 2010
Publication date	Feb 24, 2015
Grant date	Feb 24, 2015

Abstract

Techniques and systems are disclosed for measuring arterial transit delay using pseudo- continuous arterial spin labeling (ASL) with variable TR and interleaved post-labeling delays. In one aspect, a magnetic resonance imaging method for measure arterial blood flow and transit delay using arterial spin labeling (ASL) includes applying an ASL pulse sequence. The ASL pulse sequence includes a pre- saturation pulse, and a labeling pulse. The method includes performing data acquisition to measure a transit delay, which represents a time needed for labeled blood to arrive in an imaging slice.

First claim

What is claimed is:

1. A method of magnetic resonance (MR) imaging, the method comprising:
acquiring a succession of MR image pairs responsive to a succession of arterial spin labeling (ASL) pulse sequences, wherein each MR image pair is acquired responsive to a corresponding one of the successive ASL pulse sequences followed by a corresponding delay period;
processing the acquired series of MR image pairs to measure arterial blood flow and transit delay of a target tissue;
wh…

Assignees

• Jung Youngkyoo
• Lu Kun
• Univ California

Inventors

• Jung Youngkyoo
• Lu Kun

Classifications

• A61B5/0263 Primary

  Human Necessities · mapped topic

• G01R33/56366 Primary

  Physics · mapped topic