Magnetic resonance imaging method and apparatus with application of the truefisp sequence and sequential acquisition of the MR images of multiple slices of a measurement subject

US7443162B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventor

• Michael Deimling · Baiersdorf, DE

Key dates

• Filing date: Aug 8, 2006
• Grant date: Oct 28, 2008
• Expiry date: Dec 10, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/4822
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a method and apparatus for generation of magnetic resonance (MR) images based on the TrueFISP sequence with simultaneous acquisition of the MR images of a number of parallel slices of a measurement subject the number of the slices N to be acquired in the measurement subject is established whereby N is at least, the number of the phase coding lines MA per raw data matrix and slice N are established, with the requirement that the quotient of MA and N is a natural number, the repetition time TR, the radio-frequency pulse duration RF and the flip angle α are established, of each raw data matrix is sub-divided into S separate segments to be measured, whereby S is equal to N or a whole-number multiple of N, with the requirement that the quotient Q of MA and S that corresponds to the number of the phase coding lines per segment is a natural number, data are acquired for all segments S of all slices N, whereby the time duration, in msec, TSeg for the acquisition of the data of each segment isand the measurement of all segments S of all slices N is implemented such that the time duration TRelax is TRelax=(N−1)·TSeg [msec] for the relaxation of the magnetization MZ with the relaxation con…