Nuclear magnetic resonance tomography apparatus operable with a pulse sequence according to the echo planar method

US5304929A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Ming Fang · Plainsboro, US
• Ralf Ladebeck · Erlangen, DE
• Franz Schmitt · Erlangen, DE
• Michael Klaus Stehling · Rödermark, DE

Key dates

• Filing date: Nov 27, 1992
• Grant date: Apr 19, 1994
• Expiry date: Nov 27, 2012

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/5616
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In nuclear magnetic resonance tomography apparatus operable with a pulse sequence according to the echo-planar method, only a part of the k-space is scanned in the phase-coding direction per data acquisition, i.e., per radio-frequency excitation pulse. A phase-coding gradient is used such that regions of the k-space which are interleaved relative to each other are scanned in successive data acquisitions in the phase-coding direction. The number of echoes employed for the raw data matrix, and thus the resolution in phase-coding direction, or the length of the individual pulses of the read-out gradient, and thus the resolution in read-out direction, can thereby be enhanced.