Abstract: The invention relates to a high-frequency system for an MR apparatus with a high-frequency coil arrangement comprising a plurality of resonator elements (104), which is connected to a transmit unit (106), where a respective transmit channel (1-8) of the transmit unit (106) is assigned to the resonator elements (104). In order to provide a high-frequency system of this kind at low cost, by means of which a high frequency field can be generated in an examination volume (100) with a field distribution that can be preselected flexibly and variably, the invention proposes that the transmit unit (106) is equipped with a plurality of high-frequency amplifiers (107), the inputs of which can receive low-power transmit signals via a first controllable multiplexer/distributor network (108), in which the output signals of the high-frequency amplifiers (107) can be distributed over the transmit channels (1-8) via a second controllable multiplexer/distributor network (109).

Abstract: The invention relates to a method for the processing of a series of raw images (1), notably for coronary MR or CT angiography. A reference image (3) is selected from the series of raw images (1) is found by matching a selected image region of interest within the reference image (3) with individual raw images from the series of raw images (1). The reference image (3) and the image (4) which is similar to the reference image are then processed so as to form an image of improved image quality (8). In order to obtain images which are as faithful and sharp as possible, the invention proposes to form the image of improved image quality (8) by weighted averaging of the intensity values of corresponding pixels within the reference image (3) and the image (4) which is similar to the reference image.