Tomographic apparatus for the production of transverse tomographic images

US4149080A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventor

• Rudolf Schittenhelm · Erlangen, DE

Key dates

• Filing date: Jul 11, 1977
• Grant date: Apr 10, 1979
• Expiry date: Jul 11, 1997

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B6/4085
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In one illustrated embodiment two detector arrays are arranged in parallel and only one detector array is impinged upon by the primary radiation beam, the second detector array detecting only the scatter radiation due to the primary beam. Preferably, the second detector array is arranged so as to receive substantially a maximum intensity essentially equal to the scatter radiation impinging on the first detector array. In one example, the output of the second detector array may be simply subtracted from the output of the first detector array so as to obtain an accurate measure of the transmitted primary radiation. In an alternative embodiment, a single detector array is shifted to a second position for detecting only scatter radiation substantially corresponding to the scatter radiation mixed with the transmitted primary radiation.