Dental x-ray diagnostic apparatus for producing panorama tomograms of the jaw of a patient

US4813060A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Erich Heubeck · Bensheim, DE
• Werner Gunther · Bensheim, DE
• Manfred Muther · Bensheim, DE
• Leonhard Werner · Hemsbach, DE

Key dates

• Filing date: Dec 17, 1986
• Grant date: Mar 14, 1989
• Expiry date: Dec 17, 2006

Classification

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

Abstract

A dental diagnostic apparatus or installation which obtains a better matching of the exposure data to the patient and has a rotary unit carrying the radiation source and the film cassette which are adjustable to an initial position by an adjustment arrangement and from this initial position the film cassette can be charged with the radiation within the framework of normal transillumination with the radiation initially beginning outside of the mandibular arch. The incoming radiation dose is measured by a detector arrangement which creates a signal that is compared in a computational unit of a control arrangement to a rated quantity corresponding to a prescribed dose value. The exposure data required from further transillumination of the patient's head are identified therefrom and the tomogram position is determined by identifying the patient-associated film speed via the jaw length/jaw width measurements and comparison to defined rated value.