Browse Prior Art Database

Means and Methods to Produce Flexible MRI Circuits

IP.com Disclosure Number: IPCOM000132550D
Publication Date: 2005-Dec-21
Document File: 1 page(s) / 123K

Publishing Venue

The IP.com Prior Art Database

Related People

Gregory L. Bradley: ATTORNEY

Abstract

Technology currently exists to produce Flexible Optical Circuits (FOC). This technology can be utilized to produce MRI Flexible Circuits, (MRIFC). First of all optical fibers might be useful for determining the magnet field strength of the coil, but would be useless for the MRI application. Substituting metal wires for the fiber optic fiber would be one possible solution but metal wires have a tendency to become very hot in fluctuating magnetic fields. I propose substituting hollow plastic tubing for the fiber optic fibers in the flexible circuits. We would then circulate a conductive fluid (saline water perhaps) in the MRIFC to remove the heat build up and maintain the electrical continuity of the pick up coil. Metal tips at the end of the MRIFC would provide the electrical contacts for the coil circuit. Standard one-way check valves would provide the electrical isolation from the pump and reservoir to keep image artifacts to a minimum. Continuous fluid flow would not provide electrical isolation and may cause unwanted image artifacts. So intermittent flow would most likely be used. The plastic housing and disk of the Standard one-way check valves would hopefully close off the electrical path when fluid flow is halted.

This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 70% of the total text.

Technical Publication No. 05-010

Means and Methods to Produce Flexible MRI Circuits



Jeffrey H. Hicks

Technology currently exists to produce Flexible Optical Circuits (FOC).  This technology can be utilized to produce MRI Flexible Circuits, (MRIFC).
First of all optical fibers might be useful for determining the magnet field strength of the coil, but would be useless for the MRI application. Substituting metal wires for the fiber optic fiber would be one possible solution but metal wires have a tendency to become very hot in fluctuating magnetic fields.  I propose substituting hollow plastic tubing for the fiber optic fibers in the flexible circuits. We would then circulate a conductive fluid (saline water perhaps) in the MRIFC to remove the heat build up and maintain the electrical continuity of the pick up coil. Metal tips at the end of the MRIFC would provide the electrical contacts for the coil circuit. Standard one-way check valves would provide the electrical isolation from the pump and reservoir to keep image artifacts to a minimum. Continuous fluid flow would not provide electrical isolation and may cause unwanted image artifacts. So intermittent flow would most likely be used. The plastic housing and disk of the Standard one-way check valves would hopefully close off the electrical path when fluid flow is halted.

SPECIFICATION

Substitute hollow plastic tubing for the metal wires in the MRI flexible circuits.  Then circulate a conductive fluid (saline water...