Magnetic resonance tomography method and apparatus with separation of fat and water images according to the two-point dixon method dependent on T2 * decay

US8183866B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Timothy Hughes · Erlangen, DE
• Vladimir Jellus · Erlangen, DE

Key dates

• Filing date: Nov 13, 2009
• Grant date: May 22, 2012
• Expiry date: Aug 16, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/50
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a magnetic resonance tomography method and apparatus for separation of fat and water images according to the two-point Dixon method dependent on the T*2 decay, the following steps are implemented: (S1) acquire three fat-water images, respectively corresponding to the echo times TE1, TE2, TE3 after the RF excitation pulse, wherein first and third fat-water images exhibit the same phase, (S2) calculate a T*2 map from the two equiphase images, (S3) correct the T*2 influence in one of the two equiphase fat-water images and in the counter-phase fat-water image, and (S4) reconstruct a pure T*2-corrected fat image and a pure T*2-corrected water image according to the two-point Dixon method on the basis of the T*2-corrected equiphase and counter-phase fat-water images in Step (S3).