Abstract: A method and system for reconstructing magnetic resonance (MR) images, the method including the steps of: receiving an under-sampled MR image, the under-sampled MR image being transformed from under-sampled k-spaced data; classifying intensity of each pixel in the under-sampled MR image to one of a plurality of predetermined quantized values of intensity by using a neural network; and generating a reconstructed MR image based on the classified quantized value of the intensity for each pixel in the under-sampled MR image.

Abstract: A method for determining movement of an object to be imaged in a medical imaging method which includes at least one Magnetic Resonance Imaging, wherein the method comprises the following steps determining first coefficients of a mathematical transformation based on first navigator data of the object, wherein the first navigator data are recorded by a magnetic resonance tomograph (100) using a first spherical Lissajous navigator in the k-space with kr<0.2/cm, preferably kr<0.15/cm, and particularly preferably kr<0.1/cm, wherein kr represents the absolute value of the wave vector k.

Abstract: A method and system for reducing or removing motion artefacts in magnetic resonance (MR) images, the method including the steps of: receiving a motion corrupted MR image; determining a corrected intensity value for each pixel in the motion corrupted MR image by using a neural network; and generating a motion corrected MR image based on the determined corrected intensity values for the pixels in the motion corrupted MR image.

Abstract: A method for determining position and energy in scintillation detectors includes determining a photoconversion energy and a photoconversion position of particles triggering scintillation events, in an iteration-free manner, calculated from a distribution of scintillation light released by one or more of the scintillation events. The distribution of scintillation light is scanned by a photodetector.

Abstract: A double-resonant coil includes a closed conductor loop divided into at least two segments that are each connected via a second connection element configured to be converted from an electrically conductive state to an electrically insulating state. The double-resonant coil further includes an inductor or a capacitor connected in series to a first connection element so as to allow excitation of the closed conductor loop in a dipole mode at one frequency and with a homogeneous power distribution at a second frequency.

Abstract: A method for determining position and energy in scintillation detectors includes determining a photoconversion energy and a photoconversion position of particles triggering scintillation events, in an iteration-free manner, calculated from a distribution of scintillation light released by one or more of the scintillation events. The distribution of scintillation light is scanned by a photodetector.

Abstract: A dipole antenna array includes at least two dipole antenna elements. Each respective dipole antenna element has at one end a fold which consists of a bend, a bent region, and the projection of the bent region of the dipole antenna element onto a length of the dipole antenna element. Each respective dipole antenna element at least partially encloses a cavity.

Abstract: A coil assembly for use as a transmission and/or receiving coil in an MR system comprises a dipole antenna assembly with multiple dipole antennas. Connection elements are converted from an electrically conductive state to an electrically non-conductive state. In the electrically conductive state, the dipole antennas form a cylindrical volume coil and/or a conductor loop assembly, in particular a flat conductor loop assembly. The connection elements comprise blocking circuits which automatically block when a high-frequency alternating voltage with a frequency corresponding to the blocking frequency of the connection element blocking circuits is applied to the coil assembly.

Abstract: A sensor chip includes a plurality of microcells to which an xy position is assigned, composed of a photodiode Dn,m, a current divider Sq,nm, with outputs Sq,v,nm, for the y direction and outputs Sq,h,nm for the x direction, the outputs Sq,h,nm being equipped with a quenching apparatus Rq,h,nm for quenching the current, and the outputs Sq,v,nm being equipped with a quenching apparatus Rq,v,nm for quenching the current, which divides the generated photocurrent of the diodes Dn,m into two equally large fractions. The microcells are arranged in a sequence of N columns in the x direction xn,=x1, x2, x3, . . . xn with n=1, 2, 3, . . . N and M rows in the y direction ym,=y1, y2, y3, . . . ym with m=1, 2, 3, . . . M. Outputs Sq,h,nm of the current dividers Sq,nm for the x direction are connected to the read-out channels ChA and ChB for the x direction.

Abstract: A method and system for reconstructing magnetic resonance (MR) images, the method including the steps of: receiving an under-sampled MR image, the under-sampled MR image being transformed from under-sampled k-spaced data; classifying intensity of each pixel in the under-sampled MR image to one of a plurality of predetermined quantized values of intensity by using a neural network; and generating a reconstructed MR image based on the classified quantized value of the intensity for each pixel in the under-sampled MR image.

Abstract: A method and system for reducing or removing motion artefacts in magnetic resonance (MR) images, the method including the steps of: receiving a motion corrupted MR image; determining a corrected intensity value for each pixel in the motion corrupted MR image by using a neural network; and generating a motion corrected MR image based on the determined corrected intensity values for the pixels in the motion corrupted MR image.

Abstract: A dipole antenna assembly includes at least two dipole antennas mechanically, but not electrically, connected to each other. The at least two dipole antennas cross at an intersection point and form dipole antenna arms starting from the intersection point. The dipole antenna arms are arranged in a half-space.

Abstract: An SiPM sensor chip includes pixels consisting of microcells Z, each pixel being associated with an xy position x1, x2, x3, . . . , xN or y1, y2, y3, . . . yM. A plurality of pixels form a block, and the microcells are connected to output channels for a linear coding.

Abstract: A method for determining movement of an object to be imaged in a medical imaging method which includes at least one Magnetic Resonance Imaging, wherein the method comprises the following steps determining first coefficients of a mathematical transformation based on first navigator data of the object, wherein the first navigator data are recorded by a magnetic resonance tomograph (100) using a first spherical Lissajous navigator in the k-space with kr<0.2/cm, preferably kr<0.15/cm, and particularly preferably kr<0.1/cm, wherein kr represents the absolute value of the wave vector k.

Abstract: A dipole antenna assembly includes at least two dipole antennas mechanically, but not electrically, connected to each other. The at least two dipole antennas cross at an intersection point and form dipole antenna arms starting from the intersection point. The dipole antenna arms are arranged in a half-space.

Abstract: A method for photosensor signal processing includes carrying out, by measuring a combination of readout channels of a direction e with linearly increasing and linearly decreasing signal strength, a linear coding in at least one e-direction. The linearly increasing and linearly decreasing signal strengths of readout channels of the direction e, which are respectively used for the linear coding, are multiplied by each other. The linear coding satisfies the following edge condition: Q1(e)=c1·ec2+c3, Q2(e)=c4·ec5+c6, c1=const. ?(0, ?), c4=const. ?(??, 0), c3, c6=const. ?(??, ?), and 0.5<c2; c5<1.5. Q1 denotes the charge of the output channel signal strengths increasing via the e-position, and Q2 denotes the charge of the output channel signal strengths decreasing via the e-position and the coding direction.

Abstract: A method for photosensor signal processing includes carrying out, by measuring a combination of readout channels of a direction e with linearly increasing and linearly decreasing signal strength, a linear coding in at least one e-direction. The linearly increasing and linearly decreasing signal strengths of readout channels of the direction e, which are respectively used for the linear coding, are multiplied by each other. The linear coding satisfies the following edge condition: Q1(e)=c1·ec2+c3, Q2(e)=c4·ec5+c6, c1=const.?(0, ?), c4=const.?(??, 0), c3, c6=const.?(??, ?), and 0.5<c2?; c5<1.5. Q1 denotes the charge of the output channel signal strengths increasing via the e-position, and Q2 denotes the charge of the output channel signal strengths decreasing via the e-position and the coding direction.

Abstract: An SiPM sensor chip includes pixels consisting of microcells Z, each pixel being associated with an xy position x1, x2, x3, . . . , xN or y1, y2, y3, . . . yM. A plurality of pixels form a block, and the microcells are connected to output channels for a linear coding.

Abstract: The invention relates to a magnetic resonance method involving the generation of high-frequency pulses and magnetic gradients (gx, gy, gz) for the selective excitation of an object to be examined. According to the invention, the magnetic resonance method is characterized in that a magnetic resonance signal s(t) according to the following signal equation is generated: s ? ( t ) = ? V ? m ( r r , T ) ? exp ? [ t ? / ? T 2 ] ? exp ? [ ? ? ? t ? ? ? s ] ? exp ? [ - ? ? ? k r ? ( T - t ) · r r ] ? ? ? 3 ? r wherein stands for a desired transversal magnetization after the selective excitation, t stands for a time, {right arrow over (r)} stands for a position vector and T stands for a duration of a pulse, and whereby s(t) stands for a magnetic resonance signal, V stands for a volume that is to be examined, T2 stands for a transversal relaxation time, and ?s stands for a shift of the resonance frequency.

Abstract: The invention relates to a magnetic resonance method involving the generation of high-frequency pulses and magnetic gradients (gx, gy, gz) for the selective excitation of an object to be examined. According to the invention, the magnetic resonance method is characterized in that a magnetic resonance signal s(t) according to the following signal equation is generated: s ? ( t ) = ? V ? m ( r r , T ) ? exp ? [ t ? / ? T 2 ] ? exp ? [ ? ? ? t ? ? ? s ] ? exp ? [ - ? ? ? k r ? ( T - t ) · r r ] ? ? ? 3 ? r wherein m(lr,t) stands for a desired transversal magnetization after the selective excitation, t stands for a time, {right arrow over (r)} stands for a position vector and T stands for a duration of a pulse, and whereby s(t) stands for a magnetic resonance signal, V stands for a volume that is to be examined, T2 stands for a transversal relaxation time, and ?s stands for a shift of the resonance frequency.