TRANSMISSION PATH FOR USE IN RF FIELDS PROVIDING REDUCED RF HEATING
First Claim
1. An RF safe transmission path for electrically connecting first and a second electrical unit with each other, for use in an RF electrical and/or magnetic field comprising:
- at least one electrically conductive link or connection lead or cable or line being subdivided into at least two line segments or sections which are connected to each other by means of at least one switching unit such that the line segments or sections remain RF safe with respect to RF induced resonances and corresponding heating by standing waves on the conductive link or connection lead or cable or line,wherein the at least one switching unit comprises a switch with electrical contacts for electrically separating and connecting, respectively, the at least two line segments or sections of the conductive link or connection lead or cable or line by opening and closing, respectively, the electrical contacts, for switching the RF safe transmission path between an RF safe mode and a signal transmission mode in which signals are transmitted over the conductive link or connection lead or cable or line.
1 Assignment
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Accused Products
Abstract
A transmission path (2) comprising an electrically conductive link or connection lead or line or cable (21) is disclosed, which path is or can be made RF safe (especially with respect to heating due to standing waves) when guided through RF electrical and/or magnetic fields especially of a MR imaging system and which is especially suitable for connecting a base or connection unit (1), like for example a power supply or a control or evaluation unit (first unit), with a distal or remote electrical unit (3) like a sensor or a detector, a transmit and/or receive unit, or an accessory device like for example an RF body or surface coil system, or an invasive or interventional device like for example a catheter or implantables (second unit), especially in a magnetic resonance (MR) imaging system. The transmission path may comprise pressure switches or optical switches.
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Citations
13 Claims
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1. An RF safe transmission path for electrically connecting first and a second electrical unit with each other, for use in an RF electrical and/or magnetic field comprising:
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at least one electrically conductive link or connection lead or cable or line being subdivided into at least two line segments or sections which are connected to each other by means of at least one switching unit such that the line segments or sections remain RF safe with respect to RF induced resonances and corresponding heating by standing waves on the conductive link or connection lead or cable or line, wherein the at least one switching unit comprises a switch with electrical contacts for electrically separating and connecting, respectively, the at least two line segments or sections of the conductive link or connection lead or cable or line by opening and closing, respectively, the electrical contacts, for switching the RF safe transmission path between an RF safe mode and a signal transmission mode in which signals are transmitted over the conductive link or connection lead or cable or line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification