Magnetic resonance imaging apparatus and method wherein streak artifacts are minimized in modular k-space scanning

US7245125B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Wolfgang Härer · Erlangen, DE
• Peter Speier · Erlangen, DE

Key dates

• Filing date: Aug 18, 2004
• Grant date: Jul 17, 2007
• Expiry date: Feb 24, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/56545
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a method and MRI apparatus for the minimization of streak artifacts in modular k-space scanning in magnetic resonance imaging, an odd integer k-space scanning module number Nφ=2n+1 is defined that defines the number of incrementally rotated repeated modules of the k-space scanning process, a slice selection gradient selects any slice in the range of the object to be examined, and data for all Nφ angle-oriented k-space scanning modules in the selected slice acquired such that each k-space scanning module has an azmuthal distance offrom both adjacent projections, with the direction of the scanning of the adjacent k-space scanning modules alternating.