Magnetometric Estimation of Lung Dust Loads by Applying a Reversed Magnetizing
Field
Ferdinand Krutý1, Ivan Šimácek2, and Ján Manka2
1 Clinic of Labor Medicine and Toxicology, Comenius University, Medical
School, Bratislava, Slovakia
2 Institute of Measurement Science, Slovak Academy of Sciences, Bratislava,
Slovakia
Corresponding author: Doc. MUDr. Ferdinand Krutý, CSc.
Klinika pracovného lekárstva a toxikológie LFUK
Dumbierska 3, 831 01 Bratislava, Slovakia.
Telephone: (+421) 7 5477 3828
Fax number: (+421) 7 5954 6237
E-mail: kruty@healthnet.sk
CEJOEM 1999, Vol.5. No.3-4.:324-331
Key words:
Non-invasive biomagnetometry, SQUID, human lungs, ferromagnetic particles, arc welders
Abbreviations:
SQUID = Superconducting Quantum Interference Device
FMP = powder ferromagnetic particles
DC = direct current
RF = radiofrequency
SEM = standard error of the mean
Abstract:
A measuring method using SQUID gradiometric system for measurement of magnetic
dust loads of the lungs is described. Two active arc welders and one control were
the studied subjects. Based upon the experimental results we report using the reversed
magnetizing field for verifiable monitoring of dust particles with ferromagnetic
properties in living tissue. We present the response of the remanent magnetic induction
for ferromagnetic contaminants in the lungs of the subject. An evident difference in
the remanent magnetic induction between arc welders and the control was observed.
Received: 01 November 1999
Accepted: 09 February 2000
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