MR Marker for Magnetic Resonance Imaging

摘要

An MR marker for magnetic resonance imaging includes: (1) a closed volume containing a marker medium, (2) a first marker coil surrounding the volume for detecting an MR signal from the marker medium, (3) an RF shield which surrounds at least the volume and the first marker coil and screens against external RF fields, (4) a second marker coil, arranged outside the RF shield, for inductive and/or capacitive coupling to a magnetic field, and/or for emitting the MR signal detected by the first marker coil, (5) a first electrical interface for controllable electrical connection of the first marker coil to the magnetic resonance imaging scanner, (6) a second electrical interface for controllable coupling of the second marker coil and first marker coil, and (7) an electrical controller with which the first interface and/or the second interface may be controlled.

主权项

1. An MR marker for magnetic resonance imaging, the MR marker comprising:
a closed volume containing a marker medium; a first marker coil surrounding the closed volume for detecting an MR signal from the marker medium; an RF shield that surrounds at least the closed volume and the first marker coil and screens against external RF fields; a second marker coil, arranged outside the RF shield, for inductive, capacitive, or inductive and capacitive coupling to a magnetic field, and/or for emitting the MR signal detected by the first marker coil; a first electrical interface for controllable electrical connection of the first marker coil to a magnetic resonance imaging scanner; a second electrical interface for controllable coupling of the second marker coil and first marker coil; and an electrical controller configured to control the first electrical interface, the second electrical interface, or the first and second electrical interfaces.