Patent ID: 11969279
Assignee: MEDTRONIC NAVIGATION, INC.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 0:
1. A method reconstructing multiple phases of a vasculature of a subject, comprising:
operating a x-ray source at a first power to emit x-rays to be detected by a detector at a selected imaging first time;
operating the x-ray source at a second power to emit x-rays to be detected by the detector at the selected imaging second time, wherein the second power is selected to have a voltage that is about 40 kV to about 60 kV different than the first power and an amperage that is about 20 mA to about 150 mA different than the first power;
moving the x-ray source and the detector along a selected path relative to the subject; and
acquiring image data of a selected portion of the subject over an imaging period of time while (i) moving the x-ray source and the detector and (ii) switching between powering the x-ray source at the first power to emit x-rays to be detected by the detector and powering the x-ray source at the second power to emit x-rays to be detected by the detector, wherein the acquired image data includes a plurality of image frames of the subject acquired over the imaging period of time at both (i) different positions relative to the subject based on the moving of the x-ray source and the detector and (ii) different powers operable to assist in discriminating the vasculature of the subject from a tissue surrounding the vasculature of the subject based on a difference in the image data due to the difference of the first power and the second power;
receiving via an input directly from a user an identification in a region of interest regarding the vasculature of the subject of at least a phase image portion regarding a first phase and a second phase, wherein the phase image portion is operable to determine which one or more portions of the image data have an intensity relating to a presence of a contrast agent;
determining a first sub-plurality of image frames of the plurality of image frames of the acquired image data that relate to the first phase of the vasculature of the subject in the region of interest based at least on the received input;
determining a second sub-plurality of image frames of the plurality of image frames of the acquired image data that relate to the second phase of the vasculature of the subject in the region of interest based at least on the received input;
reconstructing a model that illustrates both (i) at least one of the first phase of the vasculature of the subject based on the determined first sub-plurality of image frames or the second phase of the vasculature of the subject based on the determined second sub-plurality of image frames and (ii) the discrimination of the first phase of the vasculature of the subject or the second phase of the vasculature of the subject from the tissue surrounding the vasculature of the subject, wherein at least one of the first phase or the second phase is reconstructed using the input and wherein the model is constructed based on the acquired image data;
registering the reconstructed model to the subject such that a location in a navigation field is operable to be displayed on a display device relative to the reconstructed model; and
generating for display on the display device a graphical representation of an instrument superimposed on a display of the reconstructed model, wherein the instrument is tracked relative to the subject and the generated graphical representation that is displayed is based on the tracked instrument and the registration of the reconstructed model to the subject.