Magnetic resonance method and device to automatically differentiate water-dominated and fat-dominated tissue with only one spin echo acquired for each pixel

US8362769B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Timothy Hughes · Erlangen, DE
• Vladimir Jellus · Erlangen, DE
• Michael Szimtenings · Bonn, DE

Key dates

• Filing date: Sep 22, 2009
• Grant date: Jan 29, 2013
• Expiry date: Mar 31, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/481
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a magnetic resonance method and system to automatically differentiate whether a pixel of an MR image acquired with magnetic resonance system originated from fat-dominated tissue or water-dominated tissue, only one spin echo-based magnetic resonance signal per pixel is acquired at a point in time at which the phase of a magnetic resonance signal of aqueous tissue has a phase opposite to the phase of a magnetic resonance signal of fat tissue. The phase angle of the pixel is then calculated, a base phase at the pixel depending on the magnetic resonance system is determined, and a corrected phase angle of the pixel is determined from the phase angle and the base phase. Whether the pixel originated from fat-dominated tissue or water-dominated tissue is then determined using the corrected phase angle of the pixel.