Susceptometer for non-invasive iron level measurement in a body

Details Susceptometer for non-invasive iron level measurement in a body Susceptometer for non-invasive iron level measurement in a body

2002-12-13

2008-08-12

Winakur, Eric F (Department: 3768)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S410000, C324S307000

Reexamination Certificate

active

07412275

ABSTRACT:
A susceptometer for non-invasive determination of iron concentration in a body, by detecting the magnetic flux variation produced by the body. The susceptometer comprises a heat insulating case (16), containing a support structure that defines a screening region (8, 10). The structure supports an alternating magnetic field source, which is able to generate a magnetic field in the screening region, and at least two magnetic field sensors (4, 6), disposed in front of the field source (2). Means (12, 14) for introducing the body to be measured in the screening region (8, 10), temperature-control means, for stabilizing temperature inside the case, so as to limit relative variation to a predetermined maximum value, and means for processing electric signals indicative of the variation in the magnetic field linked to the sensor, which variation is caused by the screened body, in the screening region, are further provided.

REFERENCES:
patent: 2001/0011155 (2001-08-01), Rapoport
patent: 2002/0151779 (2002-10-01), Avrin et al.
patent: 0140790 (2001-06-01), None
John H. Bauman, Richard W. Hoffman: “Magnetic Susceptibility Meter for In Vivo Estimation of Hepatic Iron Stores” Transactions on Bio-Medical Engineering, vol. 14, No. 4, Oct. 1967, pp. 239-243, XP001150027; Abstract; p. 241, left-hand column, paragraph 3—p. 242, left-hand column, paragraph 2; figures 2,3.
J. Steketee, H. Roggeveen, Y.J. Kingma: “Measurement of magnetic susceptibility in living rats” Meidcal & Biological Engineering & Computing, vol. 18, 1980, pp. 253-260, XP001150020; Abstract; p. 254, right-hand column, paragraph 1—p. 256, left-hand column, paragraph 1; figures 2-5.

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