Abstract: The present invention relates to a patient marker (10). The marker is configured to be placed on or inside a patient. The marker comprises a specific structure (20). When the marker is placed on or inside the patient, and the patient is positioned at least partially within an image acquisition unit of an imaging system, the marker is configured such that an image acquired by the imaging system comprises image data of the specific structure of the marker. The marker is configured such that image data of the specific structure of the marker comprises information useable to identify the marker. The marker is configured such that image data of the specific structure of the marker comprises information useable to define at least one parameter relating to an examination of the patient.

Abstract: Disclosed is an X-ray system (100, 700) configured for acquiring medical imaging data (134) from a subject (102) at least partially within an imaging zone (105). The X-ray system comprises a memory (128) storing machine executable instructions (130). The X-ray system further comprises a processor (122) configured for controlling the X-ray system. The X-ray system further comprises a pilot tone system (106), wherein the pilot tone 5 system comprises a radio frequency system (108) comprising multiple transmit channel (110) and multiple receive channel (112). The multiple transmit channel is configured for transmitting multiple pilot tone signal (136) via multiple transmit coil (114). The multiple receive channel is configured for receiving pilot tone data (138) via multiple receive coil (116).