Remote temperature monitoring apparatus and technique
First Claim
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1. A technique for in vivo temperature measurement of tissue comprising the steps of:
- locating in living tissue at least one element having a temperature dependent internal magnetic field;
applying an RF field to the at least one element;
sensing the temperature dependent internal magnetic field of said at least one element by sensing the nuclear magnetic resonance frequency thereof in response to the application of said RF field thereto; and
providing an output indication of temperature of at least one element as a function of the sensed nuclear magnetic resonance frequency.
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Abstract
A thermometry system comprising an implantable element having temperature dependent NMR properties, apparatus for applying an RF field to the implantable element, and apparatus for sensing the temperature dependent NMR response of the implantable element and for providing an output indication of temperature of the implantable element.
67 Citations
9 Claims
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1. A technique for in vivo temperature measurement of tissue comprising the steps of:
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locating in living tissue at least one element having a temperature dependent internal magnetic field; applying an RF field to the at least one element; sensing the temperature dependent internal magnetic field of said at least one element by sensing the nuclear magnetic resonance frequency thereof in response to the application of said RF field thereto; and providing an output indication of temperature of at least one element as a function of the sensed nuclear magnetic resonance frequency. - View Dependent Claims (2)
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3. A technique for localized heating of living tissue comprising the steps of:
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implanting in living tissue at least one element having a temperature dependent internal magnetic field, selectably heating living tissue; applying an RF field to the at least one element; sensing the temperature dependent nuclear magnetic resonance frequency of the element; and providing an output indication of temperature of the implantable element, in order to monitor the heating of the living tissue and to enable prevention of overheating thereof. - View Dependent Claims (4, 5)
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6. A clinical hyperthermia system comprising:
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means for selectably heating tissue in vivo; and means for monitoring the temperature of the tissue, thereby to prevent overheating of said tissue, said means for monitoring including; at least one in vivo locatable element having a temperature dependent internal magnetic field; means for applying an RF field to the in vivo locatable element; and means for sensing the temperature dependent nuclear magnetic resonance frequency of said in vivo locatable element in response to the application of said RF field thereto and for providing an output indication of temperature of the locatable element as a function of the sensed nuclear magnetic resonance frequency. - View Dependent Claims (7, 8, 9)
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Specification