Method for determining the spatial distribution of magnetic resonance signals in subvolumes of an object under examination

US9958522B2 · kind B2 · utility

Assignee

• BRUKER BIOSPIN MRI GMBH · DE

Inventors

• Wolfgang Ruhm · Ettlingen, DE
• Johannes Schneider · Kirchlengern, DE
• Peter F. Ullmann · San Jose, US

Key dates

• Filing date: Apr 18, 2012
• Grant date: May 1, 2018
• Expiry date: Aug 29, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/5612
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for determining the spatial distribution of magnetic resonance signals from at least one of N subvolumes predefines a reception encoding scheme and determines unique spatial encoding for at least one of the subvolumes but not for the entire volume under examination (UV). A transmission encoding scheme is also defined, wherein encoding is effected via the amplitude and/or phase of the transverse magnetization. The temporal amplitude and phase profile of the RF pulses is then calculated and each reception encoding step is carried out I times with variations according to the I transmission encoding steps in the transmission encoding scheme. The method makes it possible to largely restrict the spatially resolving MR signal encoding and image reconstruction to subvolumes of the object under examination without the achievable image quality sensitively depending on imperfections in the MR apparatus.