MAMMOGRAPHY MAGNETIC RESONANCE IMAGERS

Brand	Owner	Address	Description
KONICA MINOLTA	KONICA MINOLTA HOLDINGS, INC.	1-6-1, Marunouchi Chiyoda-ku, Tokyo Japan	mammography magnetic resonance imagers, CT scanners;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

The invention enables to monitor a magnetic field drift of a magnetic resonance imaging apparatus on the basis of the magnetic resonance signals, which are acquired during magnetic resonance image data acquisition, such as by single shot EPI or by a gradient echo sequence. The phases of at least two magnetic resonance signals are acquired an echo time after the corresponding RF excitations. This corresponds to the central k-space line, which has frequency encoding but no phase encoding. The difference of two consecutive phase measurements, which are acquired at a certain time interval provides the shift of the resonance frequency. This enables monitoring of the shift of the resonance frequency and compensation of the magnetic field drift.