Measurements of the quantities of particles accumulated in the lungs of workers.

The human body is enveloped in weak (10-9 T) magnetic fields generated by magnetic particles accumulated in the lungs and other organs. We studied magnetic fields from the lungs (magnetopneumogram) in order to determine how they may be utilized in the early diagnosis of pneumonoconiosis and other diseases. The effects of these diseases have been positively correlated with the size of the magnetic particle deposits in the lungs. When we measured the relaxation effect and the secondary magnetization for smokers and non-smokers, we found there was a large difference in these characteristics between these groups.