Integrated coil sensor for magnetic induction medical imaging

Abstract

The invention relates to an integrated coil sensor for magnetic induction medical imaging, which comprises an exciting coil and a detecting coil. The integrated coil sensor is characterized in that both the exciting coil and the detecting coil adopt plane surface spiral ring structure, the initiating terminal of the exciting coil is located in an inner ring, and the terminal end thereof is located in an outer ring; the initiating terminal of the detecting coil is located in the inner ring, and the terminal end thereof is located in the outer ring; the detecting coil is located in the space of the ring of the exciting coil, and coil assemblies are formed by the detecting coil and the exciting coil without connection through conducting wire connection; the coil assemblies are distributed on one identical surface of a printed circuit board, or two coil assemblies taking mirror images are distributed on the two surfaces of the printed circuit board. The invention has the advantages that the sensitivity is high, the adjustment is not required, and the consistency is good; and the invention is a novel coil sensor which is convenient to be fabricated in batch.

Description

technical field [0001] The invention relates to an electromagnetic field measuring device, in particular to an integrated coil sensor for magnetic induction medical imaging. Background technique [0002] Magnetic induction medical imaging is an emerging medical imaging technology. It uses the phenomenon that biological tissue generates eddy current due to electromagnetic induction in the alternating main magnetic field, and generates a secondary magnetic field, and reconstructs biological tissue by detecting the phase and amplitude of the induced electromotive force induced in the detection coil by the secondary magnetic field Conductivity distribution, providing reference for medical diagnosis. [0003] Magnetic induction medical imaging technology uses an excitation coil to generate an alternating main magnetic field, and uses a detection coil to collect a secondary magnetic field. The excitation coil and detection coil constitute a coil sensor. The existing coil sensor ...

AI Technical Summary

Problems solved by technology

[0004] The single coil cannot eliminate the influence of the main magnetic field on the detection coil, and the change of the secondary magnetic field is too small compared with the main excitation magnetic field, so it is not easy to measure, so the sensitivity of the single coil is relatively low; the gradient coil improves the low sensitivity of the single coil, and can achieve Relatively high sensitivity, but it is difficult to ensure that the intervals between the three coils are equal, the interval between the three coils is difficult to adjust, and the consistency of each probe is not good, which is not conducive to multi-channel measurement

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