METHOD AND SYSTEM FOR AUTOMATIC NEEDLE RECALIBRATION DETECTION

摘要

A tracking system that includes a sensor and emitter is calibrated, and a tracked position and orientation of a surgical instrument is determined based at least in part on tracking information emitted by the emitter and detected by the sensor. An ultrasound system performs an ultrasound scan to acquire ultrasound scan data including the surgical instrument. The ultrasound system determines a scanned position and orientation of the surgical instrument based on the ultrasound scan data. The ultrasound system compares the tracked position and orientation with the scanned position and orientation to determine a calibration error. If the calibration error exceeds a threshold, the ultrasound system may (1) prompt a user to repeat the tracking system calibration step, (2) automatically recalibrate the tracking system and/or the ultrasound system, or (3) provide a user option for proceeding with automatic recalibration of the tracking system and/or the ultrasound system.

主权项

1. A method, comprising:
calibrating a tracking system comprising a sensor and an emitter, the sensor and the emitter being attached to or within a probe of an ultrasound system and a surgical instrument, respectively; determining, by a processor of the ultrasound system, a tracked position and orientation of the surgical instrument based at least in part on tracking information emitted by the emitter of the tracking system and detected by the sensor of the tracking system; performing, by the probe of the ultrasound system, an ultrasound scan to acquire ultrasound scan data; determining a scanned position and orientation of the surgical instrument based on the ultrasound scan data; and comparing, by the processor, the tracked position and orientation of the surgical instrument with the scanned position and orientation of the surgical instrument to determine a calibration error.