Method and apparatus for filtering high-frequency electromagnetic beams and irradiation apparatus or device for irradiating an object

US9241679B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Oliver Hayden · Moosburg an der Isar, DE
• Manfred Ruehrig · Achern, DE
• Frank Sauer · Princeton, US
• Reiner Schulz · Remscheid, DE
• Sandro Francesco Tedde · Weisendorf, DE

Key dates

• Filing date: Jun 26, 2013
• Grant date: Jan 26, 2016
• Expiry date: Sep 4, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G21K5/04
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method and an apparatus for filtering radio-frequency electromagnetic beams, in particular x-rays, include a fluid container containing a ferrofluid which at least partially absorbs the electromagnetic beams. A distribution of the ferrofluid within the fluid container can be varied by using an applied magnetic gradient field. An irradiation apparatus and a device for irradiating an object are also provided.