Method for making and reproducing a tomogram of an object, said tomogram pertaining to a section roentgenogram

US6570953B1 · kind B1 · utility

Assignee

• Airona Dental Systems GmbH · DE

Inventors

• Michael Dobert · Lorsch, DE
• Roland Bonk · Blankenloch, DE

Key dates

• Filing date: Feb 5, 2002
• Grant date: May 27, 2003
• Expiry date: Feb 5, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B6/51
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In a method and x-ray apparatus for making and reproducing a radiological tomogram of a subject, the subject is irradiated with radiation emanating from a focus disposed at a known distance from a focal plane, situated at the subject. The focal plane is disposed at a known distance from a radiation receiver, which is disposed in the image plane, and which contains a number of picture elements. In a digital radiological tomogram, either the slice position with the aforementioned distances is allocated to respective picture elements, or a correction factor, based on the slice position and the aforementioned distances, is allocated to the respective picture elements, from which a corrected image is obtained with the subject appearing with a corrected size corresponding to the size of the subject in the focal plane.