Abstract: Device (1) for positioning interventional instruments within an examination space, with a tomograph (11) for recording diagnostic image data of the examination space, a patient table (4) that can be moved transversely and/or rotated, at least one radiation unit (2, 2A, 2B, 2C) with a radiation source, which generates directed electromagnetic radiation, at least one carrier device (3, 3A, 3B, 3C) associated with the respective radiation unit (2, 2A, 2B, 2C), a control unit for orientation of the respective radiation unit (2, 2A, 2B, 2C) and of the patient table (4) according to the access and target points selected based on the diagnostic image data, wherein each radiation unit (2, 2A, 2B, 2C) is arranged movably with a first degree of freedom on the respective carrier device (3, 3A, 3B, 3C) and the carrier device (3, 3A, 3B, 3C) permits the mobility of this radiation unit (2, 2A, 2B, 2C) relative to the patient table (4), wherein an access point and the relative orientation of an instrument to reach a target

Abstract: The invention relates to a tissue marker (1, 1?) for marking a lesion (16) in the body tissue (6). The invention is characterized in that the tissue marker (1, 1?) comprises a transponder (2). The transponder (2) can be activated by electromagnetic radiation (8) in such a manner that the transponder (2) emits a localization signal (9) in the form of electromagnetic radiation by means of which the position of the tissue marker (1, 1?) in the body tissue (6) can be detected. The invention further relates to a system for determining the position of such a tissue marker (1, 1?) and to the use of an RFID tag as a tissue marker (1, 1?) for marking a lesion (16) in the body tissue. According to an advantageous embodiment of the invention, the tissue marker (1, 1?) is biodegradable.

Abstract: The invention relates to a method for detecting motion (“Motion Capture”), wherein markers (2) are put onto an object (1), the physical positions of the markers are detected and digitized, with the motion of the object (1) being recorded by means of a computer (3) using the chronologically variable digital position data. It is an object of the invention to improve a method of this kind. To this end, the invention proposes that the markers (2) comprise a respective transponder which is activated by electromagnetic radiation (5), specifically such that the transponder emits a location signal as electromagnetic radiation (6), the signal being used to detect the position of the respective marker (2).