Slice ordering for MB-EPI ASL imaging

US11965950B2 · kind B2 · utility

Assignees

• Siemens Healthineers AG · DE
• Regents of the University of Minnesota · US

Inventors

• Xiufeng Li · Beijing, CN
• Gregory J. Metzger · Lake Elmo, US
• Essa Yacoub · Hudson, US
• Kamil Ugurbil · Minneapolis, US
• Dingxin Wang · Apple Valley, US

Key dates

• Filing date: Jul 29, 2019
• Grant date: Apr 23, 2024
• Expiry date: May 25, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/5616
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for generating a perfusion weighted image using arterial spin labeling (ASL) with segmented acquisitions includes dividing an anatomical area of interest into a plurality of slices and performing a multi-band (MB) echo planar imaging (EPI) acquisition process using a magnetic resonance imaging (MRI) system to acquire a control image dataset representative of the plurality of slices using a central-to-peripheral or peripheral-to-central slice acquisition order. An ASL preparation process is performed using the MRI system to magnetically label protons in arterial blood water in an area upstream from the anatomical area of interest. Following a post-labeling delay time period, the MB EPI acquisition process is performed to a labeled image dataset corresponding to the slices using the central-to-peripheral or peripheral-to-central slice acquisition order. A perfusion weighted image of the anatomical area is generated by subtracting the labeled image dataset from the control image dataset.