Abstract: A technique for determining an object marker arrangement including a plurality of object markers arranged on at least two non-parallel surfaces or non-parallel surface portions of an object. A reference device with a pre-determined reference pattern is provided. A method includes receiving image data representative of a plurality of images that contain the reference pattern and at least a subset of the object markers. At least some of the images were captured by an imaging device from different viewing angles. The reference pattern and the object markers were arranged in a fixed spatial relationship relative to each other when the images were captured. The method includes determining positions of the object markers relative to the reference pattern. The position of an individual one of the object markers is determined based on at least two images that contain the individual object marker and based on geometrical information about the reference pattern.

Abstract: The present teachings generally provide for a surgical navigation system for use with an x-ray imaging device. The x-ray imaging device acquires x-ray images of an anatomical structure of interest at an angular position. The surgical navigation system includes a localizer with a tracking sensor, a gravity vector sensor coupled to the tracking sensor, a tracking device configured to be coupled to the C-arm so as to be movable with the C-arm between a plurality of angular positions. The tracking device comprises a tracking element detectable by the tracking sensor. A computer processor is operatively coupled with the localizer and configured to implement an imaging routine that receives tracking data from the tracking sensor and a gravity vector from the gravity vector sensor, generating an image vector indicative of the angular position at which the x-ray image was acquired.

Abstract: A method for determining a scan region to be imaged by a medical image acquisition device is disclosed. The method is performed by at least one processor and comprises obtaining, for each of at least one surgical device, information indicative of one or more poses thereof. The method further includes selecting, based on the one or more poses, at least one anatomical element of a patient's body. The method further includes determining, based on the selected at least one anatomical element, a scan region to be imaged by a medical image acquisition device. An apparatus, a system and a computer program product are also disclosed.

Abstract: The present teachings generally provide for a surgical navigation system for use with an x-ray imaging device. The x-ray imaging device acquires x-ray images of an anatomical structure of interest at an angular position. The surgical navigation system includes a localizer with a tracking sensor, a gravity vector sensor coupled to the tracking sensor, a tracking device configured to be coupled to the C-arm so as to be movable with the C-arm between a plurality of angular positions. The tracking device comprises a tracking element detectable by the tracking sensor. A computer processor is operatively coupled with the localizer and configured to implement an imaging routine that receives tracking data from the tracking sensor and a gravity vector from the gravity vector sensor, generating an image vector indicative of the angular position at which the x-ray image was acquired.