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

Claim 8:
9. A method reconstructing multiple phases of a vasculature of a subject, comprising:
injecting a contrast agent into the vasculature of the subject at a selected injection start time, wherein the contrast agent injected into the subject has a x-ray scattering pattern different than that of an anatomy of the subject;
powering a x-ray source tube to emit x-rays at a first power with a first power source to acquire a first image data at a first position along a path relative to the subject and having a first attenuation within the subject;
powering the x-ray source tube to emit x-rays at a second power different from the first power with a second power source to acquire a second image data at a second position along the path relative to the subject and having a second attenuation within the subject;
providing an imaging system having a cart, a gantry moveable relative to the cart, the x-ray source tube within the gantry, wherein the gantry encloses the x-ray source and is provided to encircle the subject;
acquiring the first image data and the second image data of the vasculature of the subject at both the first power and the second power while at least one of positioning or moving the x-ray source within the gantry and at least one of moving or not moving the gantry;
determining a region of interest including the vasculature of the subject;
determining a first portion of the first image data that relates to the first phase of the vasculature of the subject in the determined region of interest based at least on a received input directly from a user and a second portion the second image data that relates to the second phase of the vasculature of the subject in the determined region of interest based at least on the received input; and
reconstructing a model of the vasculature of the subject in the determined region of interest based on an iterative process using the first image data with the first attenuation and the second image data with the second attenuation based on the first power and the second power;
wherein reconstructing the model includes:
constructing a multi-phase model that illustrates all of (i) a first phase of the vasculature of the subject including a venous phase of the subject in the first image data and the second image data, (ii) a second phase of the vasculature of the subject including an arterial phase of the subject in the first image data and the second image data, and (iii) a discrimination of the first phase or the second phase from tissue surrounding the vasculature of the subject.