Low cost magnetic resonance safe probe for temperature measurement
First Claim
Patent Images
1. A temperature measurement probe for use in a magnetic resonance environment comprising:
- an elongated substrate;
a plurality of resistive electrically conductive traces printed on the substrate;
at least one thermistor disposed on the substrate and electrically connected with at least one of the traces, the thermistor configured to be placed in thermal communication with a patient in the magnetic resonance environment;
at least one reference element connected with one of the resistive traces, wherein the at least one reference element includes a thermistor which is thermally isolated from the patient or a resistor; and
a processor and control circuit electrically connected with the traces, the processor and control circuit being configured to subtractively combine a temperature signal with MR related noise and an MR related noise signal from the reference element.
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Abstract
A temperature measurement probe (130) for use in a magnetic resonance environment, includes an elongated substrate (202), at least one highly resistive, electrically conductive traces (200, 200a, 200b, 200a′, 200b′) one printed at least one thermistor (204) disposed on the substrate and electrically connected with the trace. The thermistor is configured to be placed in thermal communication with a patient in the magnetic resonance environment. In some embodiments, the printed trace may be carbon-based, silicone based, or may be a doped semiconductor material.
13 Citations
15 Claims
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1. A temperature measurement probe for use in a magnetic resonance environment comprising:
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an elongated substrate; a plurality of resistive electrically conductive traces printed on the substrate; at least one thermistor disposed on the substrate and electrically connected with at least one of the traces, the thermistor configured to be placed in thermal communication with a patient in the magnetic resonance environment; at least one reference element connected with one of the resistive traces, wherein the at least one reference element includes a thermistor which is thermally isolated from the patient or a resistor; and a processor and control circuit electrically connected with the traces, the processor and control circuit being configured to subtractively combine a temperature signal with MR related noise and an MR related noise signal from the reference element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for monitoring temperature in a magnetic resonance environment comprising:
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printing a plurality of resistive, electrically conductive traces on an elongated substrate; electrically connect at least one patient temperature measuring thermistor to at least one of the traces; connecting a reference element for sensing a common mode signal for subtraction from a signal from the patient temperature measuring thermistor to one of the traces, wherein the signal on trace from thermistor includes noise and temperature information, and the signal on trace from reference element includes the noise; applying the thermistor and the reference element to the patient; processing the signals from the thermistor and the reference element to correct the thermistor signal from the noise; and convert corrected thermistor signal to a temperature value. - View Dependent Claims (15)
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Specification