US 8,509,384 B2 · Method for enhanced visualization of objects in interventional angiographic examinations

Abstract

A method for enhanced visualization of objects in interventional angiographic examinations is provided. X-ray images are recorded during the system dose regulation phase with pure anatomy and during the filling phase with the vessels filled with contrast agent. A mask image is produced from both of the images. Native X-ray images are produced during a working or intervention phase with an object, for example a wire, a catheter or a “coil”, moved in the vessel. The images have a matrix-shaped array of pixels. The pure anatomy images are subtracted from the filling images and from the native images for generating a first subtraction image and a second subtraction image respectively. The first and the second subtraction image are processed for generating a vessel image and an object image respectively. The vessel image and the object image are processed for generating a roadmap image which is played back on a monitor.

Claims15

Dependent claims

A method for improving a visualization of an object in an interventional angiographic examination, comprising:

acquiring an empty image with pure anatomy, a filling image with vascular tree filled with a contrast agent, and a native image with the object being introduced by a detector of an imaging recording system, the empty image, the filling image, and the native image having a matrix-shaped array of pixels;
subtracting the empty image from the filling image for generating a first subtraction image by an image processing system;
subtracting the empty image from the native image for generating a second subtraction image by the image processing system;
processing the first subtraction image for generating a vessel image by the image processing system;
processing the second subtraction image for generating an object image by the image processing system;
processing the vessel image and the object image for generating a roadmap image by the image processing system;
and
playing the roadmap image on a monitor,
wherein the vessel image is subtracted from the object image for generating the roadmap image.

6 more elements

Dependencies are inferred from the claim text.

Method for enhanced visualization of objects in interventional angiographic examinations

Life of this patent

Method for enhanced visualization of objects in interventional angiographic examinations

Life of this patent

Abstract

Claims15