Method and apparatus for determining the state of an oximetry sensor
First Claim
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1. A method for determining whether a sensor is coupled to a tissue sample, the sensor being operable to generate a detector signal indicative of absorption of electromagnetic radiation by the tissue sample, the method comprising:
- generating a plurality of metric values corresponding to the detector signal, each of the metric values guantifying a behavior of the detector signal which is correlated with whether the sensor is coupled to the tissue sample;
inputting the plurality of metric values to a neural net,performing data reduction with the neural net based on dependencies among the metric values, and generating a probability value indicative of whether the sensor is coupled to the tissue sample; and
determining whether the sensor is coupled to the tissue sample by referring to the probability value.
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Abstract
A method for determining whether a sensor is coupled to a tissue sample is described. The sensor is operable to generate a detector signal indicative of absorption of electromagnetic radiation by the tissue sample. A plurality of metric values corresponding to the detector signal are generated. A neural net is employed with the metric values to determine whether the sensor is coupled to the tissue sample.
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Citations
22 Claims
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1. A method for determining whether a sensor is coupled to a tissue sample, the sensor being operable to generate a detector signal indicative of absorption of electromagnetic radiation by the tissue sample, the method comprising:
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generating a plurality of metric values corresponding to the detector signal, each of the metric values guantifying a behavior of the detector signal which is correlated with whether the sensor is coupled to the tissue sample; inputting the plurality of metric values to a neural net, performing data reduction with the neural net based on dependencies among the metric values, and generating a probability value indicative of whether the sensor is coupled to the tissue sample; and determining whether the sensor is coupled to the tissue sample by referring to the probability value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. At least one computer readable medium containing program instructions for determining whether a sensor is coupled to a tissue sample, the sensor being operable to generate a detector signal indicative of absorption of electromagnetic radiation by the tissue sample, said at least one computer readable medium comprising:
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computer readable code for generating a plurality of metric values corresponding to the detector signal, each of the metric values quantifying a behavior of the detector signal which is correlated with whether the sensor is coupled to the tissue sample; computer readable code for inputting the plurality of metric values to a neural net; computer readable code for performing data reduction with the neural net based on dependencies among the metric values, and generating a probability value indicative of whether the sensor is coupled to the tissue sample; and computer readable code for determining whether the sensor is coupled to the tissue sample by referring to the probability value.
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22. A method for determining whether a sensor is coupled to a tissue sample, the sensor being operable to generate a detector signal indicative of a parameter associated with the tissue sample, the method comprising:
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generating a plurality of metric values corresponding to the detector signal, each of the metric values quantifying a behavior of the detector signal which is correlated with whether the sensor is coupled to the tissue sample; inputting the plurality of metric values to a filter; performing data reduction with the filter based on dependencies among the metric values, and generating a probability value indicative of whether the sensor is coupled to the tissue sample; and determining whether the sensor is coupled to the tissue sample by referring to the probability value.
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Specification