Abstract: There is provided a method of determining a scan sequence for magnetic resonance imaging—MRI. The method comprises: receiving an indication of one or more selected imaging parameters for the MRI; and based on the selected imaging parameters, determining the scan sequence usable by an MRI apparatus to perform the MRI, wherein determining the scan sequence comprises configuring the scan sequence to modulate gradient noise arising from the MRI apparatus during the MRI to deliver a first audible signal to the patient, wherein the first audible signal is configured to perform auditory stimulation of slow wave activity in the patient.

Abstract: The present invention relates to patient positioning. In order to improve patient positioning during a scan, an autonomous motion positioner is proposed using a critical range, which may correspond to maximum corrections achievable by the scanner hardware and the maximum tolerable image distortions. The critical range is determined based on one or more machine settings of the medical imaging system. As the machine setting(s) may vary in a given imaging exam, the critical range may dynamically change in response to a change of the machine setting in the given imaging exam. External sensors may measure, via a feedback loop, the deviation from the start position, i.e. the imaging pose position. If patient motion is too large and the motion parameter (e.g. translation and/or rotation) exceeds the determined critical range, then the scan process may be stopped. The autonomous scanner may hold in an idle mode. During that mode, the patient may be guided to retake its original position via a feedback system.

Abstract: The invention provides for a magnetic resonance imaging system (100, 200) comprising a memory (148) for storing machine executable instructions (150) and pulse sequence commands (152). The pulse sequence commands are configured for acquiring a four dimensional magnetic resonance data set (162) from an imaging region of interest (109). The four dimensional magnetic resonance data set is at least divided into three dimensional data magnetic resonance data sets (400, 402, 404, 406, 408) indexed by a repetitive motion phase of the subject. The three dimensional data magnetic resonance data sets are further at least divided into and indexed by k-space portions (410, 412, 414, 416, 418, 420, 422, 424, 426, 428, 430, 432, 434, 436). The magnetic resonance imaging system further comprises a processor (144) for controlling the magnetic resonance imaging system.

Abstract: The invention relates to a method of MR imaging of an object (10). It is an object of the invention to enable MR imaging in the presence of motion of the imaged object, wherein full use is made of the acquired MR signal and a high-quality MR image essentially free from motion artefacts is obtained. The method of the invention comprises the steps of: generating MR signals by subjecting the object (10) to an imaging sequence comprising RF pulses and switched magnetic field gradients; acquiring the MR signals as signal data over a given period of time (T); subdividing the period of time into a number of successive time segments (SO, S1, S2, . . . Sn); deriving a geometric transformation (DVF1, DVF2, . . . DVFn) in image space for each pair of consecutive time segments (S0, S1, S2, . . . Sn), which geometric transformation (DVF1, DVF2, . . .

Abstract: Disclosed herein is a method of training a neural network (214) to perform a SENSE magnetic resonance imaging reconstruction. The method comprises receiving (100) initial training data, wherein the initial training data comprises sets of initial training complex channel images each paired with a predetermined number of initial ground truth images. The method further comprises generating (102) additional training data by performing data augmentation on the initial training data such that the data augmentation comprises adding a distinct phase offset to each of the set of initial training complex channel images during generation of the sets of additional training complex channel images. The method further comprises inputting (104) the sets of additional training complex channel images into the neural network and receiving in response a predetermined number of output training images and performing deep learning using the output training images.

Abstract: A magnetic resonance examination system with an examination zone (11) and comprising a camera (21) and non-metallic mirror (22), in particular within the examination zone (11), arranging an optical pathway (23) between a portion of the examination zone (11), via the non-metallic mirror (22), and the camera (21). The camera can obtain image information from that portion even if the direct line of sight (28) is blocked. The non-metallic mirror is a dielectric mirror having a macroscopically grated base.

Abstract: Disclosed is a medical imaging system (100, 400) component comprising: an optical image generator (122) configured for generating a two-dimensional image (200); an optical imaging system (126) configured for acquiring optical image data (166); and an optical waveguide bundle (124) comprising a subject end (132) and an equipment end (130). The subject end comprises at least one lens (136, 136). The optical image generator is configured for optically coupling to the equipment end to form an image projection pathway. The optical waveguide bundle is configured for projecting the two-dimensional image through the image projection pathway. The optical imaging system is configured for optically coupling to the equipment end to form an optical image data acquisition pathway. The optical imaging system is configured for acquiring the optical image data through the lens via the optical image data acquisition pathway.

Abstract: Disclosed is a magnetic resonance imaging magnet assembly (102, 102?) configured for supporting a subject (118) within an imaging zone (108). The magnetic resonance imaging magnet assembly comprises a magnetic resonance imaging magnet (104), wherein the magnetic resonance imaging magnet is configured for generating a main magnetic field with the imaging zone. The magnetic resonance imaging magnet assembly further comprises an optical image generator (122) configured for generating a two-dimensional image. The magnetic resonance imaging magnet assembly further comprises an optical waveguide bundle (123) configured for coupling to the optical image generator. The magnetic resonance imaging magnet assembly further comprises a two-dimensional display (124) comprising pixels (600), wherein each of the pixels comprises a diffusor (602, 602?).

Abstract: The invention relates to a method of MR imaging of an object (10). It is an object of the invention to enable MR imaging in the presence of motion of the imaged object, wherein full use is made of the acquired MR signal and a high-quality MR image essentially free from motion artefacts is obtained. The method of the invention comprises the steps of: generating MR signals by subjecting the object (10) to an imaging sequence comprising RF pulses and switched magnetic field gradients; acquiring the MR signals as signal data over a given period of time (T); subdividing the period of time into a number of successive time segments (SO, S1, S2, . . . Sn); deriving a geometric transformation (DVF1, DVF2, . . . DVFn) in image space for each pair of consecutive time segments (S0, S1, S2, . . . Sn), which geometric transformation (DVF1, DVF2, . . .

Abstract: The invention provides for a magnetic resonance imaging system (100, 200) comprising a memory (148) for storing machine executable instructions (150) and pulse sequence commands (152). The pulse sequence commands are configured for acquiring a four dimensional magnetic resonance data set (162) from an imaging region of interest (109). The four dimensional magnetic resonance data set is at least divided into three dimensional data magnetic resonance data sets (400, 402, 404, 406, 408) indexed by a repetitive motion phase of the subject. The three dimensional data magnetic resonance data sets are further at least divided into and indexed by k-space portions (410, 412, 414, 416, 418, 420, 422, 424, 426, 428, 430, 432, 434, 436). The magnetic resonance imaging system further comprises a processor (144) for controlling the magnetic resonance imaging system.

Abstract: The invention relates to a method of MR imaging of an object (10). It is an object of the invention to enable MR imaging using the stack-of-stars or stack-of-spirals acquisition scheme providing an enhanced image quality in the presence of motion.

Abstract: A radio frequency (RF) antenna device (40) applies an RF field to an examination space (16) of a magnetic resonance (MR) imaging system (10). The RF antenna device (40) includes a plurality of rungs (42, 44) arranged substantially parallel and in an azimuthally substantially equally spaced relationship along an outside of a virtual cylinder (50) with a cylinder axis (52) running parallel to main directions of extension (48). At least one transversal antenna member (54) electromagnetically is coupled to at least one rung (42, 44) of the plurality of rungs (42, 44). The at least one transversal antenna member (54) is arranged within a plane substantially perpendicular to the main directions of extension (48) of the plurality of rungs (42, 44). At least one RF circuit (62, 64, 66) is provided for each rung (42, 44) of the plurality of rungs (42, 44) for mutual decoupling and for individually feeding RF power into the at least one transversal antenna member (54).

Abstract: A radio frequency (RF) antenna device (40) for applying an RF field to an examination space (16) of a magnetic resonance (MR) imaging system (10), the RF antenna device (40) comprising a plurality of rungs (42, 44) arranged substantially parallel and in an azimuthally substantially equally spaced relationship along an outside of a virtual cylinder (50) with a cylinder axis (52) running parallel to main directions of extension (48); at least one transversal antenna member (54) electromagnetically coupled to at least one rung (42, 44) of the plurality of rungs (42, 44), wherein the at least one transversal antenna member (54) is arranged within a plane substantially perpendicular to the main directions of extension (48) of the plurality of rungs (42, 44); and a plurality of RF circuitries (62, 64, 66), wherein at least one RF circuitry (62, 64, 66) is provided for each rung (42, 44) of the plurality of rungs (42, 44) for mutual decoupling and for individually feeding RF power into and for the at least one trans

Abstract: The invention provides an apparatus (1) for magnetic resonance (MR) examination of a subject (S), comprising: an examination region (3) for accommodating the subject (S) during the MR examination; a radio-frequency system (5) for transmission of a radio-frequency (RF) signal or field into the examination region (3) during the MR examination; and a temperature control system (6) for controlling the temperature of the subject (S) in the examination region (3) during the examination. The temperature control system (6) is configured to actively control or regulate an environment of the subject (S), and thereby the temperature or thermal comformt of the subject (S) based upon a detected and/or an expected temperature of the subject (S) during the MR examination.