Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2006-06-13
2006-06-13
Raymond, Edward (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C600S410000, C073S649000, C324S244000
Reexamination Certificate
active
07062391
ABSTRACT:
The invention provides a method for magnetic imaging of an object. The method comprises monitoring a magnetic field of sources in the object at a plurality of magnetic detectors to obtain a corresponding plurality of sensor outputs, monitoring a position of the object while monitoring the magnetic field of the sources, modeling the magnetic field of the sources in the object as a gradient of a scalar potential, the scalar potential comprising a sum of spherical harmonic functions each multiplied by a corresponding coefficient, and, compensating for the position of the object by applying a transformation to the plurality of sensor outputs, the transformation including, at least in part, a spherical harmonic translation transformation.
REFERENCES:
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Thomas Funkhouser and Michael Kazhdan, “Alignment and Matching”, Aug. 1, 2000, Princeton University, pp. 9-17.
M. Danos and L.C. Maximon;Multiple matrix Elements of the Translation Operator; J. Math. Phys. V.6 (1965) pp. 766-778.
A.A. Ioannides, J. Mutter, and E.-A. Barna-Popescu,;Irreducible tensor representation of MEG signals: Theory and applications; Proc. 12th Int. Conf. Biomagnetism, pp. 883-886, Aug. 2000.
K. Jerbi, J.C. Mosher, S. Bailet and R.M. Leahy;On MEG forward modelling using multipolar expansions, Phys. Med. Biol. v.47 (2002) pp. 523-555.
S. Taulu, M. Kajola and J. Simola;The Signal Space Separation Method; Proc. 14th Conf. of ISBET (Int. Soc. for Brain Electromagentic Topography) Nov. 2003.
Oyen Wiggs Green & Mutala LLP
Raymond Edward
VSM Medtech Systems Inc.
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