Patent · US Active

Apparatus and method for influencing and/or detecting magnetic particles

US9439579B2 · kind B2 · utility

0Cited by

1References

13Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Claas Bontus · Hamburg, DE
Bernhard Gleich · Hamburg, DE

Key dates

Filing date	Dec 5, 2011
Grant date	Sep 13, 2016
Priority date	—
Expiry date	Feb 11, 2033

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B5/0515
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Method for influencing and/or detecting magnetic particles in a field of view. Selection coils/magnets generate a magnetic selection field and drive coils generate a magnetic drive field for moving a field-free point along a predetermined trajectory through the field of view, changing the magnetization of the magnetic material locally. The drive field comprises a time-dependent oscillating drive field current per drive field coil having one or more individual oscillating frequencies and one or more individual current amplitudes and being generated by a corresponding drive field voltage generated by a superposition of a number of drive field voltage components including a drive field voltage component per drive field coil, wherein a drive field voltage component corresponding to a drive field coil comprises one or more sub-components, each having an individual voltage amplitude and having the same individual oscillating frequency as the respective drive field current of said particular drive field coil.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.