Detuning a radio-frequency coil
AssigneeKoninklijke Philips Electronics N. V.
InventorsChristian FINDEKLEE, Daniel WIRTZ
Life of this patent
Estimating the term…
Abstract
For detuning of radio-frequency coils (in magnetic resonance imaging and spectroscopy, for example), a conducting element (102) of a transmission cable is configured to form a primary resonant circuit tunable to at least one first resonance frequency. A second conducting element (104) of the transmission cable is configured to form a switching circuit that is electrically insulated from and reactively coupled via inductive coupling and/or capacitive coupling to the primary resonant circuit, and is adapted to tune the primary resonant circuit to at least one second resonance frequency, thereby detuning the primary resonant circuit.
Claims10
A tunable radio-frequency coil including a transmission cable, comprising:
- a first conducting element of the transmission cable configured to form a primary resonant circuit tunable to at least one first resonance frequency;
- and
- a second conducting element of the transmission cable configured to form a switching circuit electrically insulated from and reactively coupled to the primary resonant circuit, the switching circuit being adapted to tune the primary resonant circuit to at least one second resonance frequency.
A method of fabricating a radio-frequency coil including a transmission cable, comprising:
- configuring a first conducting element of the transmission cable to form a primary resonant circuit tunable to at least one first resonance frequency;
- configuring a second conducting element of the transmission cable to form a switching circuit electrically insulated from and reactively coupled to the primary resonant circuit;
- and
- adapting the switching circuit to tune the primary resonant circuit to at least one second resonance frequency.
A method of tuning a tunable radio-frequency coil including a transmission cable, wherein a primary resonant circuit comprising a first conducting element of the transmission cable is tuned to at least one first resonance frequency, the method comprising:
- operating a switching circuit comprising a second conducting element of the transmission cable, the switching circuit being electrically insulated from and reactively coupled to the primary resonant circuit;
- and
- tuning the primary resonant circuit to at least one second resonance frequency.
A magnetic resonance system comprising a tunable radio-frequency coil including a transmission cable, the tunable radio-frequency coil comprising:
- a first conducting element of the transmission cable configured to form a primary resonant circuit tunable to at least one first resonance frequency;
- and
- a second conducting element of the transmission cable configured to form a switching circuit electrically insulated from and reactively coupled to the primary resonant circuit, the switching circuit being adapted to tune the primary resonant circuit to at least one second resonance frequency.
Dependencies are inferred from the claim text.