Version 2.1.1.0

Abstract

Grant Number:	1R43HD043542-01
PI Name:	PAULSON, DOUGLAS N.
PI Email:	paulson@tristantech.com
PI Title:
Project Title:	Developing Instrumentation for Fetal Cardiac Monitoring

Abstract: DESCRIPTION (provided by applicant): There is a strong need to assess the physiological development of the fetus, as more pre- and fullterm babies survive with possible disorders. This Phase I research will evaluate the feasibility of developing a new, non-invasive fetal magnetocardiography (fMCG) sensor, based on high temperature superconductors (HTS). The potential of fMCG is especially high for evaluating fetal rhythm disorders. Studies have shown that fMCG can detect fetal rhythm disturbances that cannot be detected by ultrasound, which is the only technology in wide use. fMCG is also a nearly ideal signal source for fetal heart rate monitoring, providing a precise signal, which can be detected throughout the last half of pregnancy. Studies have shown that fMCG can provide important diagnostic information, unobtainable by other means, which have the potential to improve the accuracy of fetal monitoring. This Phase I will (1) build a proof-of-principle HTS axial gradiometer fMCG system, with a gantry and sensor configuration based on prior MCG data from fetal heart signals, (2) assess the sensitivity of the fMCG system in terms of signal size, magnetic field resolution, and noise characteristics in shielded and unshielded envrionments, and begin to refine noise reduction software, and (3) collect fetal data at several intervals from gestation, from within the magnetically shielded room at the University of Wisconsin's Biomagnetism Research Laboratory. A major obstacle to acceptance of present-day fMCG is its high cost and sophistication. If successful, the proposed project will lead to the development of a practical instrument which can significantly improve clinical assessment of fetal cardiac function and fetal well-being.

Thesaurus Terms:
biomagnetism measurement, biomedical equipment development, cardiography, diagnosis design /evaluation, embryo /fetus monitoring, magnetic field, superconductivity
heart function, heart rate, heart rhythm, heat, magnetism, noninvasive diagnosis
clinical research, human pregnant subject, human subject

Institution:	TRISTAN TECHNOLOGIES, INC.
	6350 NANCY RIDGE DR, STE 102
	SAN DIEGO, CA 92121
Fiscal Year:	2003
Department:
Project Start:	21-MAR-2003
Project End:	31-MAR-2004
ICD:	NATIONAL INSTITUTE OF CHILD HEALTH AND HUMAN DEVELOPMENT
IRG:	ZRG1

---