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Automatic Zoom Adjustment of a Reference or Mask Image During Overlay Techniques

IP.com Disclosure Number: IPCOM000198277D
Original Publication Date: 2010-Aug-23
Included in the Prior Art Database: 2010-Aug-23
Document File: 1 page(s) / 71K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

X-ray systems, capable of providing live images, are used in interventional medicine where they provide so called overlay techniques. These techniques basically consist of comparing an image made before the intervention with images made during the intervention. The results are used as an additional help for the operating physician. One of these techniques is known as subtracted fluoroscopy. It works by subtracting a so called mask image, captured before injecting a fluoroscopic medium, from images captured after the injection. Another technique is the Overlay-Fade-Technique. It overlays a so called reference image, created with any acquisition technique before the intervention, with the live image of the intervention. In both techniques there is a possibility of increasing or decreasing the amount of overlay. In order to gain better results it is sometimes necessary to change the zoom format. But doing so, the overlaying techniques are no longer applicable because the live image and the mask, respectively the reference image, have different display windows.

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Automatic Zoom Adjustment of a Reference or Mask Image During Overlay

Techniques

Idea: Sigrid Ferschel, DE-Forchheim

X-ray systems, capable of providing live images, are used in interventional
provide so called overlay techniques. These techniques basically consist of compa before the intervention with images made during the intervention. The results are u additional help for the operating physician. One of these techniques is known as sub fluoroscopy. It works by subtracting a so called mask image, captured before injec medium, from images captured after the injection. Another technique is the Overlay-Fa It overlays a so called reference image, created with any acquisition tec
with the live image of the intervention. In both techniques there is a possibility o decreasing the amount of overlay. In order to gain better results it is sometimes n
the zoom format. But doing so, the overlaying techniques are no longer app
image and the mask, respectively the reference image, have different display wind

Currently physicians have to make sure that a mask images or reference images is every zoom format possibly needed during the intervention. In order to generate these a images more contrast media is injected into the patient and he is exposed to more

In the following a novel solution is prop automatically reformat the mask image, respe available live image. This enables physicians to z mask or reference image.

Utilizing only one reference image, the advan

medicine where the...