Dynamic computed tomography method and apparatus with temporal interpolation of data in perfusion studies

US7474727B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Pau Montes Vives · Heidelberg, DE
• Günter Lauritsch · Nuremberg, DE

Key dates

• Filing date: Oct 12, 2006
• Grant date: Jan 6, 2009
• Expiry date: Oct 12, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2223/612
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In dynamic computed tomography a contrast agent is injected into a patient, and a region of interest where the contrast agent is flowing is then scanned with a computed tomography machine having a ray source and a ray detector. The ray source rotates. At a first rotational position of the ray source for a first rotation at a first time point a first image is obtained, and at the first rotational position for at least another rotation at a second time point a second image is obtained. For at least another rotational position of the ray source for the first rotation at a third time point a third image is obtained, and at the another rotational position for the another rotation at a fourth time point a fourth image is obtained. Time interpolations are performed and a reconstructed image is created.