University of California

Inkspace Imaging, Inc.

Joseph R Corea

Ana Claudia Arias

Shimon Michael Lustig

Anita M Flynn

Gillian Gentry Haemer

Pulkit Malik

Tracy Allyn Wynn

A radio frequency (RF) circuit is provided for use with a magnetic resonance imaging (MRI) scanner to transmit an RF receive signal to an amplifier circuit, the RF circuit comprising: a transmission line; an antenna electrically connected to a first end portion of the transmission line; an impedance transformation circuit; an impedance matching and detuning circuit electrically connected between the transmission line and the impedance transformation circuit, wherein the impedance matching and detuning circuit includes: multiple reactive impedance elements; and two or more switches operable to controllably switch between configuring the multiple reactive impedance elements to cause matching of overall impedance of the RF circuit to a prescribed input impedance seen at the amplifier circuit at a prescribed RF frequency during a receive mode of the MRI scanner, and to cause an increase of impedance at the antenna, to reduce sensitivity of the antenna to RF signals at the prescribed frequency during an excitation mode of the MRI scanner.

Transmission line coupled antenna and detuning circuit

A flexible resonant trap circuit is provided that includes a transmission line arranged to include a helical winding that has a first helical winding segment and a second helical winding segment; and a capacitor coupled between the first and second helical winding segments.

Flexible resonant trap circuit

Methods for forming flexible magnetic resonance imaging (MRI) receive coil devices having at least one receive coil with at least one capacitor are provided and include providing a flexible substrate having a first surface and a second surface opposite the first surface, forming a first conductor pattern on the first surface by printing a first layer of conductive material on the first surface using a printing mask having a pattern, and forming a second conductor pattern on the second surface by printing a second layer of conductive material on the second surface using the same printing mask or identical printing mask, wherein a portion of the first conductor pattern on the first surface overlaps with a portion of the second conductor pattern on the second surface with the flexible substrate therebetween to form the at least one capacitor element.

Single screen fabrication of symmetric multilayer magnetic resonance imaging (MRI) receive coils

A Magnetic Resonance Imaging (MRI) receiver includes a receiver coil on a substrate. The receiver coil includes one or more capacitors. The construction of the capacitors allows for the use of very flexible substrates and allows the capacitors themselves to be highly flexible. The increased flexibility permits the MRI receiver to be conformed to the body of a patient and accordingly improves the MRI process.

Growing community of inventors

Berkeley, CA, United States of America

Joseph R Corea