Dynamic magnetic resonance imaging with variable contrast

US10420512B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Andreas Greiser · Erlangen, DE
• Michaela Schmidt · Uttenreuth, DE
• Peter Speier · Erlangen, DE
• Aurélien Stalder · Erlangen, DE
• Michael Zenge · Nuremberg, DE

Key dates

• Filing date: Apr 8, 2015
• Grant date: Sep 24, 2019
• Expiry date: Mar 18, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2576/00
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In a method for computing MR images of an examination object that performs a cyclic movement, MR signals are detected over at least two cycles of the cyclic movement. In each of these cycles, data for multiple MR images are recorded. Over these cycles, a magnetization of the examination object that influences the MR images approaches a state of equilibrium in a second of these cycles is closer to the state of equilibrium than in a first of these cycles. Movement information for various movement phases of the cyclic movement of the examination object is determined using the MR images from the second cycle, with movement information of the examination object determined for each of the various movement phases. Movement correction of the examination object is carried out in the MR images of the first cycle using the movement information determined in the second cycle.