Controlling electromagnetic (EM) transmission based on pressure parameters
Inventors
MIZRAHI, Nadav • Rappaport, Dan • SAROKA, Amir • Kalisman, Oren • Barash, Yiftach • Levi, Tal • Adler, Yaron
Assignees
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Publication Number
US-11529051-B2
Publication Date
2022-12-20
Expiration Date
Abstract
A method of controlling an analysis of electromagnetic (EM) signal of a human subject. The method comprises positioning an EM transducer unit in front of a skin area above a target intrabody volume of a human subject, the EM transducer unit having at least one EM transducer, a pressure applying unit that applies a variable pressure on the skin area, and a pressure sensor, measuring at least one pressure parameter indicative of the variable pressure using the pressure sensor, capturing EM signal using the at least one EM transducer, and performing an analysis of the EM signal to infer at least one intrabody parameter of the target intrabody volume. The analysis is controlled according to the at least one pressure parameter.
Core Innovation
The invention relates to an EM transducer unit for analyzing electromagnetic signal of a human subject by using pressure feedback. The EM transducer unit is positioned in front of a skin area opposite a target intrabody volume, and includes at least one EM transducer and at least one pressure sensor that measures at least one pressure parameter indicative of a pressure applied on the skin area, wherein the pressure parameter comprises a pressure change pattern.
The method measures an EM signal using the at least one EM transducer and performs an analysis of the EM signal to infer at least one intrabody parameter of the target intrabody volume. At least one of the analysis, a transmission of the EM signal, and a reception of the EM signal is controlled according to the measured pressure parameter(s), and the pressure parameter is used to guide handling of the EM signal processing.
The disclosure uses pressure-derived pressure change patterns, including patterns associated with a breathing process and cardiac system related process, to improve the analysis. The pressure change pattern is used to reduce breathing-induced artifacts and cardiac system induced artifacts in the EM measurements, support component separation or segmentation between sources related to the lung and cardiac system, and detect proper or improper positioning to prevent EM transmission during improper positioning.
Claims Coverage
The independent claim set includes 1 independent method claim. The inventive coverage centers on coordinating EM signal transmission, reception, and analysis with a pressure change pattern measured by a pressure sensor integrated with the EM transducer unit, while using that pressure information for artifact reduction and positioning-related control.
Pressure sensor pressure change pattern for closed-loop control
Measuring at least one pressure parameter indicative of a pressure applied on the skin area using at least one pressure sensor, wherein the at least one pressure parameter comprises a pressure change pattern, and controlling at least one of analysis, a transmission of the EM signal, and a reception of the EM signal according to the at least one pressure parameter.
Infer intrabody parameter from EM signal based on pressure-feedback
Positioning an EM transducer unit in front of a skin area opposite a target intrabody volume of a human subject, measuring EM signal using the at least one EM transducer, and performing an analysis of the EM signal to infer at least one intrabody parameter of said target intrabody volume.
Improper positioning detection and transmission prevention
Detecting a period when the EM transducer unit is improperly positioned on the skin area using pressure-parameter analysis, and preventing EM transmission during that detected period.
Breathing-process indication via pressure change pattern
Using the pressure change pattern as an indication of a breathing process.
Breathing-induced artifact reduction by controlling
Using controlling to reduce breathing-induced artifacts in EM measurements.
Cardiac-system-induced artifact reduction by controlling
Using control to reduce cardiac-system-induced artifacts in EM measurements.
Threshold comparison on pressure change pattern for control
Comparing a pressure change pattern to a threshold.
Overall, the claims focus on integrating an EM transducer unit with pressure sensors that measure a pressure change pattern, and then using that pressure-derived information to control EM signal transmission, reception, and analysis. Dependent refinements further use breathing-process and cardiac-system-related pressure patterns for artifact reduction and apply pressure-pattern thresholding and improper-position detection to constrain EM transmission.
Stated Advantages
Reducing breathing-induced artifacts in EM measurements.
Reducing cardiac system induced artifacts in EM measurements.
Preventing EM transmission during detected improper positioning.
Documented Applications
Analyzing electromagnetic signals to infer intrabody parameters of a target intrabody volume, including thoracic intrabody parameters and optionally lungs.
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