Method and system for electromagnetic tracking with magnetic trackers for respiratory monitoring
AssigneeKoninklijke Philips N.V.
InventorShlomo GOTMAN
Life of this patent
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Abstract
A method and system using electromagnetic tracking to monitor the respiration of a patient. The system includes trackers attached to the patient that emit and receive a magnetic field that changes as the patient breathes. The changing field received by the tracker can be associated with the breathing states of the patient and used to generate a respiratory signal. The respiratory signal may be used to indicate when to advance an intervention tool during an intervention procedure on the patient. The same electromagnetic system may also be used to track the position of the intervention tool, further assisting the intervention procedure.
Claims20
An electromagnetic tracking system, comprising:
- a first tracker attached to a subject, wherein the first tracker comprises an emitter to emit a magnetic field;
- a second tracker attached to the subject, wherein the second tracker comprises a first receiver to measure the magnetic field;
- and
- logic to determine a position of the second tracker relative to the first tracker based on the magnetic field measured by the first receiver and to generate a respiratory signal based on the position of the second tracker relative to the first tracker;
- wherein the position of the second tracker relative to the first tracker changes during a plurality of respiratory states of the subject.
An electromagnetic tracking system for indicating intervention tool advancement timing during an intervention procedure, comprising:
- an electromagnetic tracking system for monitoring respiration of a subject, wherein the electromagnetic respiration monitor produces a respiratory signal indicative of a plurality of respiratory states of the subject;
- the electromagnetic respiration monitor comprising:
- a first tracker attached to a subject, wherein the first tracker comprises an emitter to emit a magnetic field;
- a second tracker attached to the subject, wherein the second tracker comprises a receiver to measure the magnetic field;
- and
- logic to determine a position of the second tracker relative to the first tracker based on the magnetic field measured by the receiver and to generate the respiratory signal based on the position of the second tracker relative to the first tracker;
- wherein the position of the second tracker relative to the first tracker changes during the plurality of respiratory states of the subject;
- an imaging device for scanning the subject and generating an imaging data set, wherein the imaging data set is associated with a first respiratory state of the subject;
- and
- an advancement indicator for indicating when to advance an intervention tool based on the respiratory signal, such that advancement of the intervention tool occurs during the first respiratory state of the subject.
A electromagnetic tracking method, comprising:
- emitting a magnetic field from a first tracker, wherein the first tracker is attached to a subject and comprises an emitter to emit the magnetic field;
- measuring the magnetic field with a second tracker, wherein the second tracker is attached to the subject and comprises a first receiver to measure the magnetic field;
- determining a position of the second tracker relative to the first tracker based on the magnetic field measured by the first receiver;
- and
- generating a respiratory signal based on the position of the second tracker relative to the first tracker;
- wherein the position of the second tracker relative to the first tracker changes during a plurality of respiratory states of the subject.
Dependencies are inferred from the claim text.