Method for magnetic resonance imaging based on partially parallel acquisition (PPA)

US8854040B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Stephan Kannengiesser · Erlangen, DE
• Jan Ruff · Birkenfeld, DE

Key dates

• Filing date: Jul 21, 2011
• Grant date: Oct 7, 2014
• Expiry date: Dec 19, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/5676
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a method and system for magnetic resonance imaging of an examination subject on the basis of partially parallel acquisition (PPA) with multiple component coils, a calibration measurement is implemented in a first time period and an actual measurement for the imaging is implemented in a subsequent second time period. In the calibration measurement, calibration data for predetermined calibration points in spatial frequency space are acquired with the multiple component coils. In the actual measurement, incomplete data sets are respectively acquired in spatial frequency space with each of the multiple component coils. Complete data sets are reconstructed from the incomplete data sets and the calibration data. The first time period and the second time period are different, and the measurements are implemented when triggered in the two time periods. An essentially identical state of the examination subject or of the measurement system is used as a trigger.