Systems and methods of managing erroneous signals in marker-based devices
AssigneeEndomagnetics Ltd
InventorsQuentin John Harmer, Tiziano Agostinelli
Life of this patent
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Abstract
In part, the disclosure relates to a method of detecting a marker in a subject in the presence of one or more interfering signals. The method may include detecting a first marker signal; detecting a first interfering signal; comparing one or more characteristics or a metric correlated therewith of the first interfering signal with an interference signal threshold; and generating user feedback based on the comparison and/or movement of a detection probe.
Claims17
A method of localizing a marker in the presence of one or more interfering signals using a hand-held probe in communication with a non-imaging marker localization system, the method comprising:
- detecting a marker signal using the hand-held probe;
- measuring, using the hand-held probe, a set of parameters of the marker signal, the parameters varying over time and with the position of the hand-held probe relative to the marker;
- determining a dynamic range of values of a variable of the marker signal, wherein the variable is selected from the set of parameters of the marker signal, wherein the dynamic range of values vary according to measured values of the set of parameters of the marker signal;
- detecting an interfering signal using the hand-held probe by measuring the value of the variable of the marker signal, and
- comparing the measured value of the variable of the marker signal with the dynamic range of values of the variable;
- determining the marker signal to be an erroneous signal when the measured value of the variable falls outside the dynamic range of values;
- and
- generating user feedback indicating the erroneous signal.
A method of localizing a marker in the presence of one or more interfering signals using a hand-held probe in communication with a non-imaging marker localization system, the method comprising:
- detecting a marker signal using the hand-held probe;
- measuring, using the hand-held probe, a set of parameters of the marker signal, wherein the set of parameters of the marker signal vary over time and with the position of the hand-held probe relative to the marker;
- selecting a variable of the marker signal, wherein the variable is selected from the set of parameters of the marker signal;
- determining a dynamic range of values of the variable of the marker signal, wherein the dynamic range of values vary according to measured values of the set of parameters of the marker signal, wherein each parameter of the marker signal of the set of parameters are measurable by the hand-held probe and vary over time and with a position of the hand-held probe relative to the marker;
- detecting an interfering signal using the hand-held probe by measuring the value of the variable of the marker signal;
- comparing the measured value of the variable of the marker signal with the dynamic range of values of the variable;
- and
- determining the selected variable is not within a desired range and, in response thereto, selecting a new dynamic variable that is not subject to signal interference when localizing the marker.
Dependencies are inferred from the claim text.