摘要:
The invention provides a method for performing magnetic resonance imaging, MRI, which exploits prior knowledge of the interactions between electromagnetic fields and spins in the sampled object. This technique is able to provide shorter acquisition times with respect to traditional (Nyquist-Shannon limited) MRI. The method is based on an encoding matrix formalism constructed from the specific knowledge of how every spin would evolve in time depending on their position for a given pulse sequence. This particular previous knowledge has not been fully exploited previously by traditional MRI techniques. Moreover, the method of the invention can be used in combination with other schemes, such as compressed sensing, parallel imaging, or deep learning, for further shortening the MRI scan time.
摘要:
Applicants have discovered a new low-cost and accessible method and apparatus that allowing for quicker and more precise state determinations based on medical images. The method and apparatus are non-intrusive and require providing a medical image of a subject and determining a state based on a comparison to a training image set comprising two or more states. There is provided, according to the present invention, a computer-implemented method for processing medical images comprising calculating non-local means patch-based weights comparing patches surrounding pixels of interest in a test image with a number of patches of pixels surrounding a corresponding number of pixels in reference images; and calculating for the pixels of interest at least one state estimation using a given state assigned to said reference images and said weights.
摘要:
Specifically, the invention describes obtaining a new porous material prepared to recognise DNA of the pathogenic microorganism Candida albicans, as well as the use thereof in a quick and highly sensitive in vitro diagnostic method.
摘要:
Disclosed is a synthesis process of a crystalline material with the CHA structure, which comprises the following steps: i) Preparation of a mixture that comprises one source of water, one source of a tetravalent element Y, one source of an alkaline or alkaline earth cation (A), one source of a trivalent element X, and one organic molecule (OSDA1) with the structure [R1R2R3R4N+]Q−, being the molar composition: n X2O3:YO2:a A:m OSDA1:z H2O, ii) crystallisation of the mixture obtained in i) in a reactor, iii) recovery of the crystalline material obtained in ii).
摘要:
A gamma ray Compton TOF camera system includes multiple detector modules, each comprising a gamma radiation sensitive material, and arranged in layers formed by one or more detector modules, said layers are placed such that they interfere an incoming gamma ray, in order to completely or partially absorb it after one or more Compton interactions, and are spatially separated in order to allow for the determination of the temporal order of each gamma ray interaction inside the camera system; read out electronics; and a Data Acquisition System where signals from the detector modules will be readout, digitized and sent to a processing unit, and capable to obtain the 3D position, energy and temporal sequential order of the individual interactions—Compton and photoelectric—produced by a single incident gamma ray, allowing the determination of the full timing sequence of all gamma ray interactions inside the gamma ray detector volume.
摘要:
An extension to the enhanced serial generalized bit-flipping decoding algorithm (ES-GBFDA) of non-binary LDPC codes by introducing soft information in the check node operation. The application not only considers the most reliable symbol in the syndrome computation, but also takes at least the second most reliable symbol of each incoming message into account. An extended information set is available for the parity-check node update and this allows introducing the concept of weak and strong votes performed by the check node unit. Each variable node can receive two kinds of votes, whose amplitudes can be tuned to the reliability of the syndrome that produces the vote.
摘要:
It consists of a system for palpation of the rectal face of the prostate that transforms the information collected into objective, reproducible and useful information. The system makes it possible to identify areas of high rigidity reaching the entire peripheral area, transforming a diagnostic maneuver for prostate cancer into an objective one, which until now has been subjective and unreliable. All this in a short space of time, carried out in a less aggressive and more objective way than rectal examination. The device consists of a manual electronic instrument with a handle (1) and a scanning rod (3), which includes at least two concentric force/pressure sensors of different heights, as well as an ultrasonic imaging system which, through means of connection to external devices for analysis/control, allows the data obtained to be analyzed and the anatomy of the prostate being analyzed to be visualized in real time.
摘要:
The present invention relates to a photonic chip carried out by the combination and interconnection of equally-oriented Programmable Photonics Processing Blocks, with all their longitudinal axes in parallel, implemented over a photonic chip that is capable of implementing one or multiple, simultaneous photonics circuits with optical feedback paths and/or linear multiport transformations, by the appropriate programming of its resources and the selection of its input and output ports. The invention also relates to a parallel field-programmable photonic array (P-FPPA) comprising of, at least one programmable circuit based on equally-oriented/parallel tunable beam-splitters with independent coupling and phase-shifting configuration and peripheral high-performance building blocks.
摘要:
The present invention relates to the agri-food industry and obtaining seedless fruit. The invention consists of an active product whose composition comprises sulphur (S) as an octatomic molecule (S8) as its active ingredient, as well as optionally a surfactant and a plant hormone, preferably gibberellic acid or auxins and its use in a method for obtaining seedless fruit that comprises the application of the active product on crops, flowers, horticultural plants and/or fruit trees.
摘要:
The present invention relates to a method for obtaining elastic properties of a soft solid by means of quasi-omnidirectional transverse waves generated by a focused ultrasound beam, with a helical phase profile that produces an acoustic vortex that generates a transverse wave front, not only in the direction perpendicular to the ultrasound beam but also in the same direction as the ultrasound beam. The invention also allows control of the transverse wave front generated, which facilitates the carrying out of elastography studies at different frequencies and increases the amplitude of the transverse waves produced, thereby improving the signal-to-noise ratio.