Stereo X-ray tube based suppression of outside body high contrast objects

US9867586B2 · kind B2 · utility

Assignee

• KONINIKLIJKE PHILIPS N.V. · NL

Inventors

• Cristian Lorenz · Hamburg, DE
• Michael Grass · Hanstedt, DE
• Dirk Schäfer · Hamburg, DE
• Bernhard Brendel · Norderstedt, DE

Key dates

• Filing date: Mar 4, 2013
• Grant date: Jan 16, 2018
• Expiry date: Apr 26, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30004
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A double focal spot X-ray tube is used to acquire a set of two images PIα, PIβ for a given gantry position from slightly different view positions. The stereo or binocular disparity (BD) of imaged structures is used to estimate the object depth in view direction, which in turn is used to discriminate between objects inside IO and outside EO the body. Respective structures are virtually removed from the images PIα, PIβ.