Patient cable for medical measurements
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United States of America Patent
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Nov 13, 2007
Issued Date -
N/A
app pub date -
Jun 18, 2004
filing date -
Jun 19, 2003
priority date (Note) -
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Abstract
The invention relates to a patient cable for medical measurements performed in connection with Magnetic Resonance Imaging (MRI). In order to eliminate the risk of thermal injuries without compromising the signal-to-noise ratio more than what is required for patient safety, the patient cable comprises two successive cable elements having different resistance characteristics. The second cable element, which is connected by the first cable element to the patient, has a total resistance increased from a normal high-conductivity resistance value of a patient cable to suppress antenna resonances in the second cable element. The first cable element, which is connected to the electrodes on the skin of the patient, has a total resistance substantially greater than that of the second cable element to prevent electromagnetically induced currents from flowing to the patient and to prevent excessive heating of the cable by electromagnetic induction.
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