Method and apparatus for determining biocurrent distribution wit

Details Method and apparatus for determining biocurrent distribution wit Method and apparatus for determining biocurrent distribution wit

1992-08-13

1993-09-14

Howell, Kyle L.

Surgery

Truss

Pad

128731, 128734, 36441302, A61B 505

Patent

active

052439844

ABSTRACT:
A living body is replaced by a 3-D network. Admittance connected to lines forming the 3-D network is calculated. Position rt and magnitude qt=(jtx,jty,jtz) of a current dipole are assumed, and current sources jtx, jty and jtz are connected in parallel with lines coupled to a node. Node equations are formulated, and an admittance matrix Y is derived. An inverse matrix Y' of Y is calculated, and body surface potential generated by the current sources is calculated by using the inverse matrix Y'. Then, rt and qt minimizing cost function which is sum total of squares of differences between measured values of body surface potential and the above described calculated values for all measuring points are derived. Thereby potential distribution on the body surface can be calculated with due regard to the shape of the living body and conductivity distribution in the living body on the basis of the assumed current dipole. On the basis of measured data of potential distribution on the body surface, therefore, the position and magnitude of the current dipole can be estimated with high precision.

REFERENCES:
patent: 4736751 (1988-04-01), Gevins et al.
patent: 4770182 (1988-09-01), Damadian et al.
patent: 5170119 (1992-12-01), Sekihara et al.
Electro Medica, vol. 57, No. 1, 1989, Erlangen (DE), pp. 2-7, XP8302 F. Gudden et al. "Ein vielkanalsystem zur biomagnetischen diagnostik in neurologie and kardiologie: prinzip, methode und erste ergebnisse".
SPIE, vol. 1351, Digital Image Synthesis and Inverse Optics (1990); pp. 410-416.
Colophon of Numerical Calculation of Matrix.

Affiliated with

Also associated with

Rating

Method and apparatus for determining biocurrent distribution wit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for determining biocurrent distribution wit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining biocurrent distribution wit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2020652