US 9,791,536 B1 · Mutually calibrated magnetic imaging array

Abstract

A mutually calibrated magnetic imaging array system is described. The system includes a non-target magnetic source rigidly attached to a magnetometer, and an attached control unit to measure and adjust several parameters of a magnetic imaging array. A non-target magnetic field source is used to generate a well-defined and distinguishable spatial magnetic field distribution. The source is rigidly attached directly to a magnetometer, while the relative positions of the magnetometers are unknown. The magnetic imaging array is used to measure the strength of the non-target source magnetic fields and the information is used to calibrate several parameters of the array, such as, but not limited to, effective magnetometer positions and orientations with respect to each other and cross-talk between the magnetometers. The system, and method described herein eliminates the need for a separate calibration phantom.

Claims20

Dependent claims

A magnetic imaging system, the system comprising:

a. at least one non-target magnetic source capable of creating a known magnetic field pattern;
b. at least one magnetometer, wherein the magnetometer is rigidly attached to the at least one non-target magnetic source;
c. at least one additional magnetometer, wherein the additional magnetometer is capable of detecting the known magnetic field pattern and creating a magnetic field measurement;
and
d. a computational unit that uses the magnetic field measurement to generate at least one calibration parameter of the magnetic imaging system.

2 more elements

Dependencies are inferred from the claim text.

Mutually calibrated magnetic imaging array

Life of this patent

Mutually calibrated magnetic imaging array

Life of this patent

Abstract

Claims20