High sensitivity open type magnetic induction image measuring device

A magnetic induction imaging, high-sensitivity technology, applied in magnetic performance measurement, magnetic resonance measurement, diagnostic recording/measurement, etc., can solve the problems of electrode skin affecting measurement accuracy, skull injection current attenuation, and unsatisfactory imaging effects, etc., to achieve convenient clinical The effect of using, the number of iterations is reduced, and the imaging effect is excellent

Inactive Publication Date: 2008-02-20
CHONGQING UNIV
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  • Claims
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Problems solved by technology

[0005] (1) The error caused by the contact impedance of the electrode skin seriously affects the measurement accuracy
[0006] (2) Poor current directivity causes low image resolution
[0007] (3) When applied to head imaging, the high resistivity of ...

Method used

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  • High sensitivity open type magnetic induction image measuring device
  • High sensitivity open type magnetic induction image measuring device
  • High sensitivity open type magnetic induction image measuring device

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Embodiment Construction

[0054] Referring to accompanying drawing 3, the high-precision magnetic induction imaging measuring device provided by the present invention includes: a controller 8, a direct digital synthesis signal source A1, a signal conditioning circuit B1, a signal amplitude adjustment circuit C1, a direct digital synthesis signal source A2, a signal Conditioning circuit B2, signal amplitude regulating circuit C2, power amplifier circuit 1, relay array 2, coil sensor array 6, differential amplifier circuit array 7, switch array 3, signal conditioning circuit 4, differential amplifier 5, signal conditioning circuit B3, signal The amplitude adjustment circuit C3, the A / D conversion circuit, the coil temperature drift suppression circuit 9, and the external communication interface 10 are characterized in that:

[0055] 1). The excitation signal channel is composed of the signal conditioning circuit A1, the signal amplitude adjustment circuit B1, and the direct digital synthesis signal sour...

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Abstract

The present invention relates to an open-typed magnetic induction imaging measuring device, consisting of a controller, an actuating single passage, an offset signal passage, a power magnifying circuit, a relay array, a winding sensor array, an array of difference amplifying circuits, a switch array, a signal regulating circuit, a signal amplifying and signal regulating circuit, a signal scale adjusting circuit, an A/D transferring circuit, a circuit for limiting drift of switch temperature and an external communication port. Imaging of the present invention is relatively simpler than global imaging, while requirement about hardware system in imaging of the present invention is lower than that of the global imaging, which means lower parameters about passage values which activate the signals. The present invention can satisfy needs of clinical medicine toward small sized, cheap, noninvasive and quick test instrument and imaging equipment with function of real time monitor.

Description

technical field [0001] The invention relates to medical imaging diagnostic equipment, in particular to a high-sensitivity open magnetic induction imaging measuring device. Background technique [0002] Since the discovery of X-rays, the development of medical science and clinical medicine has produced a qualitative leap. Especially in the past 20 years, the combination of traditional radiation technology, electromagnetic technology and computer has produced a series of medical imaging diagnostic equipment including CT, magnetic resonance imaging, etc., which has changed the concept and method of medical diagnosis and treatment, and developed on this basis. The emerging medical imaging diagnosis and treatment system has become the three major diagnosis and treatment systems of contemporary medicine alongside the internal medicine diagnosis and treatment system and the surgical diagnosis and treatment system. Although medical imaging diagnostic technology has made great progr...

Claims

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Application Information

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IPC IPC(8): A61B5/055G01R33/20
Inventor 何为徐征张占龙毛玉星罗辞勇肖冬萍何传红
Owner CHONGQING UNIV
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