Abstract: A MRSI system (100) includes a structure of interest identifier (206) that identifies a predetermined segmented structure in segmented MRI image data, a positioning rules bank (210) which stores rules for positioning a volume of interest with respect to the identified predetermined segmented structure of the segmented MRI image data, and a volume of interest generator (208) that positions the volume of interest with respect to the identified predetermined segmented structure based on one or more of the rules for positioning the volume of interest with respect to the identified predetermined segmented structure and generates a signal indicative thereof, wherein the signal is analyzed to determine a biochemical composition of a predetermined region of the structure of interest.

Abstract: The invention relates to a magnetic resonance imaging method for simultaneous and dynamic determination of a longitudinal relaxation time T1 and a transversal relaxation time T2 of the nuclear spin system of an object, in the context of DCE or DSE MRI. In this respect, the invention makes use of a steady-state gradient echo pulse sequence comprising an EPI readout module.

Abstract: According to this invention, in order to obtain high-quality images even when the slice selective gradient magnetic fields waveform is distorted by eddy currents and vibration, high-frequency magnetic field information is calculated on the basis of an output gradient magnetic field waveform applied in accordance with the input gradient magnetic field waveform that is set in a pulse sequence, and the calculated high-frequency magnetic field information is set in the pulse sequence. Then, the set input gradient magnetic field, and the excitation RF pulses of the calculated high-frequency magnetic field information are used during imaging. The output gradient magnetic field waveform used in determining the excitation RF pulses is found by measurement and calculation, for example, by using the input gradient magnetic field waveform.

Abstract: A system for parallel image processing in MR imaging comprises multiple MR imaging RF coils for individually receiving MR imaging data representing a slice of patient anatomy. An MR imaging system uses the multiple RF coils for acquiring corresponding multiple image data sets of the slice. An image data processor comprises at least one processing device conditioned for, deriving a first set of weights for generating a calibration data set comprising a subset of k-space data of composite image data representing the multiple image data sets. The at least one processing device uses the calibration data set in generating a first MR image data set, deriving a second set of weights using the calibration data set and the generated first MR image data set and uses the second set of weights in generating a second MR image data set representing a single image having a reduced set of data components relative to the first composite MR image data set.

Abstract: A method for accelerated segmented magnetic resonance (MR) image data acquisition includes using a plurality of RF pulses to excite one or more slices of an anatomical area of interest according to a predetermined slice acceleration factor. Next, a collapsed image comprising the slices is acquired using a consecutive segment acquisition process. Then, a parallel image reconstruction method is applied to the collapsed image to separate the collapsed image into a plurality of slice images.

Abstract: A method for performing multi-slice MR Elastography on an anatomical region of interest associated with a patient includes inducing shear waves at a shear wave frequency value (e.g., between 25-500 Hz) in the anatomical region of interest using an external driver. Next, the anatomical region of interest is imaged during a single patient breath-hold using an MRI acquisition process. Following the MRI acquisition process(es), phase images of the anatomical region of interest are generated based on an acquired RF signal. These phase images may then be processed (e.g., using an inversion algorithm) to generate one or more quantitative images depicting stiffness of the anatomical region of interest. In some embodiments, a wave image is also generated showing propagation of the plurality of shear waves through the anatomical region of interest based on the phase images.

Abstract: Provided is an analysis apparatus capable of acquiring a measurement result with high reliability that includes: a signal detection unit; a measuring unit; a first temperature detection unit; a second temperature detection unit; and a calculation unit.

Abstract: A method and apparatus eliminate magnetic domain walls in a flux guide by applying, either simultaneously or sequentially, a current pulse along serially positioned reset lines to create a magnetic field along the flux guide, thereby removing the magnetic domain walls. By applying the current pulses in parallel and stepping through pairs of shorter reset lines segments via switches, less voltage is required.

Abstract: A method of calibrating a passive intermodulation (PIM) measurement device configured to transmit radio frequency (RF) signals and receive PIM signals using a directional antenna includes arranging the PIM measurement device connected to the directional antenna so that the directional antenna is configured to transmit an RF signal having a substantially unobstructed boresight axis, transmitting the RF signal, and obtaining a PIM measurement using the PIM measurement device. The PIM measurement device can then be calibrated based on the obtained PIM measurement.

Abstract: Embodiments are directed to receiving an incoming signal, converting, by an analog circuit, the signal to a discrete time signal, applying, by the analog circuit, a transformation algorithm to the discrete time signal to obtain frequency samples of the discrete time signal, applying, by the analog circuit, a cross correlation algorithm to the frequency samples to obtain a cross spectral density (CSD), detecting, by the analog circuit, phase slopes associated with the CSD, and calculating an angle of arrival (AoA) of the incoming signal based on the phase slopes.

Abstract: Technology described in this document can be embodied in an optical sensor that includes a rectangular array of at least four photodetector cells of substantially equal size. An opaque mask is affixed over the rectangular array. The opaque mask defines a substantially rectangular aperture for admitting light onto only a portion of the surface of each of the at least four photodetector cells, where the aperture can be centrally positioned over the rectangular array.

Abstract: Methods and systems for real-time object tracking and data aggregation in panoramic video are disclosed. An example method provides receiving, at a first device, panoramic video data of at least one asset derived from at least one panoramic video camera; receiving tracking data related to the at least one asset from a tracking system; augmenting the panoramic video data by embedding it with the tracking data; and streaming the augmented panoramic video data over a network connection to at least one other device. Other methods and systems are disclosed.

Abstract: Methods and apparatus for processing positioning assistance data are provided. An exemplary method includes receiving, from a positioning server, virtual access point (VAP) data including a list of unique identifiers, and determining a location of a mobile device by using the VAP. The VAP data indicates that the unique identifiers included on the list identify signals originating from the same physical access point. The unique identifiers can be MAC addresses. In an example, the location determining the can include actively scanning a signal identified by a unique identifier on the list and not actively scanning a different signal identified by a different unique identifier also on the list. Not scanning the other MAC addresses that are on the access point's list and assigned to the mobile device keeps the mobile device from performing duplicative scanning that wastes time, processor cycles, and energy.

Abstract: Identifying a location of a mobile device is disclosed (e.g., presuming user consent to the same). One or more received signal strengths (RSSs), comprising a first RSS, may be received by a first access point (AP) from the mobile device. The RSSs may be used to identify a grid area, comprising a first grid space. A signal distance between the first grid space and the first AP may be identified using the first RSS, and combined with a first grid space distance, comprising a known distance between the first grid space and the first AP, to determine a first grid space likelihood score for the first grid space. A second grid space likelihood score may be determined for a second grid space (e.g., and a third, etc.), and the grid space comprising a desired grid space likelihood score (e.g., highest) may be selected as the mobile device location.

Abstract: A system and method to opportunistically capture and use measurements on a priori unknown radio signals, not intended for radio navigation or geolocation, to improve navigation/geolocation position estimation yield and accuracy.

Abstract: The general field of the invention is that of optical lidars comprising an optical porthole and operating at a first wavelength. The optical porthole of the lidar according to the invention comprises a layer or a sheet made of an optical material. The lidar comprises means for illuminating said layer or said sheet at a second wavelength different from the first wavelength, said material being transparent at the first wavelength and absorbent at the second wavelength, said second wavelength being located in the visible spectrum.

Abstract: In a radar apparatus, one frequency pair is extracted from among all frequency pairs, and an eigenvalue ratio in relation to the extracted pair is derived. The number of incoming waves is estimated according to the number of eigenvalue ratios each of which is not less than a reference threshold. Then, a proportion of the frequency pairs each estimated to have a plurality of incoming waves, relative to all frequency pairs (hereinafter referred to as plural detection proportion) is calculated as an evaluation value. These steps are repeated every time radar waves are transmitted and received. As a result, when a state where the plural detection proportion becomes not less than a specified proportion is detected over a specified number of cycles, it is determined that noise factor materials have adhered to a covering member.

Abstract: A preceding vehicle selection apparatus estimates a curvature of a road on which an own vehicle is traveling, detects an object ahead of the own vehicle, and determines a relative position in relation to the own vehicle. Based on the curvature and the relative position, an own vehicle lane probability instantaneous value is determined. This instantaneous value is a probability of the object ahead being present in the same vehicle lane as the own vehicle. By a filter calculation on the instantaneous value, an own vehicle lane probability is determined. Based on the own vehicle lane probability, a preceding vehicle is selected. An inter-vehicle time required for the own vehicle to reach a detection position of the object ahead is calculated. Based on the inter-vehicle time, characteristics of the filter calculation are changed such that an effect of the own vehicle lane instantaneous value increases as the inter-vehicle time decreases.

Abstract: A system for adjusting phase centers of a receiving array in real time. In one embodiment, a transmitter transmits a sequence of pings. Receiving elements are grouped into staves and summed prior to subsequent processing, and the groups are selected so that the phase center on a ping is substantially in the same location as another phase center on a previous ping.

Abstract: A proximity sensing device having an emitter die, a receiver die, a body is disclosed. The proximity sensor has an optical structure provided on the body. The optical structure may provide an optical path to allow radiation reflected by a near object that may be otherwise blocked by the body to be transmitted towards the receiver die. In addition to the proximity-sensing device, a sensing device having at least two trenches that allow close proximity sensing is disclosed. A method for sensing an object that involve determining whether the object correspond to a near object or a far object is presented.

Abstract: Disclosed are an apparatus for measuring position of other apparatus and a method for the same. The apparatus may comprise at least one light emitting part transmitting a photo signal, at least one light receiving part receiving a photo signal transmitted from other apparatus, and a signal processing part controlling the at least one light emitting part to transmit the photo signal including identification information of itself, acquiring identification information of the other apparatus based on the photo signal received from the other apparatus, and acquiring a positional information of the other apparatus based on the acquired identification information of the other apparatus. Thus, the apparatus located in an arbitrary space may accurately acquire relative positional information of counterpart apparatuses.

Abstract: System and method for providing position correction data over a data communications network. In one embodiment, a method includes receiving a request for a mobile device over a data communications network, wherein the request includes a user identification. The method may further include receiving geographic position of the mobile device, selecting a mountpoint based, at least in part, on one or more of the user identification and the geographic location of the mobile device, and transmitting the position correction data to the mobile device over the data communications network.

Abstract: A method includes estimating the position of the moving object on the basis of the reception of navigation signals emitted by a constellation of satellites, the navigation signals being modulated by a code and the receiver comprising a local replica of the code. The determination of the confidence indicator consists in estimating a speed of displacement of the receiver over an identified trajectory segment, deducing therefrom a Doppler delay function corresponding to the motion of the receiver, in correcting the auto-correlation function of the GNSS navigation signal received from each satellite of the constellation by means of the delay function, in comparing the corrected auto-correlation function with a theoretical auto-correlation function by applying a quadratic criterion corresponding to the confidence indicator.

Abstract: An electronic apparatus includes a selection unit, a storage unit and a processing unit. The selection unit and the storage unit are coupled to the processing unit. The selection unit selects a first reference point proximate to the electronic apparatus. The storage unit stores a plurality of second locations of a plurality of second reference points. The processing unit executes a single-point distance measurement between the electronic apparatus and a first location of the selected first reference point, provides the electronic apparatus auxiliary positioning information by selecting the second locations stored in the storage unit and generates a speculative location of the electronic apparatus by further computing the results of the single-point distance measurement and the auxiliary positioning information.

Abstract: An enhanced multifunctional paint apparatus, systems, and methods for detecting radiation on a surface include providing scintillation particles; providing an enhance neutron absorptive material; providing a binder; combining the scintillation particles, the enhance neutron absorptive material, and the binder creating a multifunctional paint; applying the multifunctional paint to the surface; and monitoring the surface for detecting radiation.

Abstract: A representative positron emission tomography (PET) system includes a positron emission tomography detector having one or more silicon photomultipliers that output silicon photomultipliers signals. The PET system further includes a calibration system that is electrically coupled to the silicon photomultipliers. The calibration system determines a single photoelectron response of the silicon photomultipliers signals and adjusts a gain of the silicon photomultipliers based on the single photoelectron response.

Abstract: An X-ray device according to an embodiment of the invention includes an X-ray detector including a number of detector elements, the detector elements being subdivided into at least two subgroups, each of spatially linked detector elements. The X-ray device or the X-ray detector includes a voltage supply unit for providing a fundamental voltage. The X-ray detector includes two voltage transformers, of which each is associated with respectively one of the two subgroups. And each of the voltage transformers is configured for converting the fundamental voltage into a detector operating voltage for the detector elements, which is lower than the fundamental voltage.

Abstract: A fiberscope comprises a scintillator arranged to produce light of a first wavelength upon exposure to radiation; an optical system arranged to receive and direct light of the first wavelength emitted from the scintillator, the light being received at one end of the optical system, and wherein one or more elements of the optical system emits scintillation light of a second wavelength upon exposure to radiation; and an optical filter, disposed at the other end of the optical system, and arranged to transmit light of the first wavelength and block light of the second wavelength. The scintillator is chosen such that the light of the first wavelength is spectrally distinct from the light of the second wavelength.

Abstract: A radiation detection system comprises a scintillator for converting radiation to visible light; two buttable CMOS wafers; an adjacent acquisition board, for acquiring pixel values; and a processing board for detecting image edge is described. The butt of each adjacent CMOS wafers pair is made such that the total width of two peripheral pixel lines and the spacing between them sums to a whole number of pixel pitch.

Abstract: A miniature, portable x-ray system may be configured to scan images stored on a phosphor. A flash circuit may be configured to project red light onto a phosphor and receive blue light from the phosphor. A digital monochrome camera may be configured to receive the blue light to capture an article near the phosphor.

Abstract: An x-ray imaging device include a scintillator layer configured to generate light from x-rays, a TFT detector array at the first surface of the scintillator layer to detect light generated in the scintillator, and a CMOS sensor at the second surface of the scintillator layer to detect light generated in the scintillator.

Abstract: A radioactivity analyzing apparatus for analyzing a radionuclide contained in a sample material. The apparatus includes a radiation detector that detects a radiation to be detected emitted from the sample material and a radiation analyzer configured to analyze the radiation based on an output from the radiation detector. The radiation analyzer includes a pulse-height analyzer configured to extract a pulse-height distribution from a pulse signal being output from the radiation detector and depending on the radiation, an inverse-problem operator configured to perform an inverse-problem solution of the pulse-height distribution to extract an energy spectrum of the radiation, and a deterioration detector configured to determine a deterioration state of the radiation detector based on the extracted energy spectrum.

Abstract: Provided herein is a digital x-ray detector wherein a plurality of sensing pixels are formed in a matrix structure, and wherein a pin structure positioned in an odd number line and a pin structure positioned in an even number line are not formed in the same process, thereby preventing a line detect by a particle.

Abstract: An X-ray detector may include a silicon substrate including a first area and a second area; a plurality of pixels in the first area configured to detect X-rays; a control pad in the second area configured to supply a common control signal to the plurality of pixels; and/or a power supply pad in the first area configured to supply a power supply voltage to groups of pixels grouped from among the plurality of pixels.

Abstract: Among other things, one or more techniques and/or systems are described for generating an output of a detector cell of a photon counting detector array. A counter block generates integration data and photon counting data associated with the photon counting detector array. Responsive to a number of detection events counted during a measurement interval (e.g., a view) not exceeding a first detection event count threshold, a first output may be generated based upon the photon counting data. Responsive to the number of detection events exceeding a second detection event count threshold, a second output may be generated based upon the integration data. Responsive to the number of detection events being between the first detection event count threshold and the second detection event count threshold, a blended output may be generated based upon the photon counting data and the integration data.

Abstract: An imager tile including four-side buttable sub-imager pixel arrays with on-chip digitizing electronic readout circuit. Pixel groupings formed from among the plurality of imagers. Readout electronics including a buffer amplifier for each of the pixel groupings are connected to respective outputs of buttable imagers. Shared analog front ends connect to respective buffer amplifiers of pixel groupings. An analog-to-digital converter at a common centroid location relative to the shared analog front ends includes three data lines—selection input/output line to individually select an output, a clock input line, and a shared digital output line. A pixel output from a respective buffer amplifier is addressable by data provided on the selection input/output line, and the pixel output is provided on the shared digital output line. The I/O lines connected to a programmable logic device where the imager serial data input is output as a massively parallel data stream.

Abstract: Seismic data acquired by independent simultaneous sweeping (ISS®) techniques are processed is to attenuate random uncompressed cross-talk signals and improve the resolution of the pre-stack migrated time image. A frequency-varying mean filter is applied on cross-spread offset-azimuth gathers of the data. The frequency-space domain filter may vary its window size according to the characteristics of the cross-talk.

Abstract: A marine vibrator may include a containment housing, a sound radiating surface, and a compliance chamber. The compliance chamber may include a compliance chamber housing, a non-linear linkage assembly, and a low pressure chamber. The compliance chamber housing may define at least a portion of a compliance chamber internal volume having a compliance chamber internal gas pressure. The low pressure chamber may comprise a low pressure piston and a low pressure chamber housing. The low pressure chamber housing may define at least a portion of a low pressure chamber internal volume having a low pressure chamber internal gas pressure. The low pressure piston may be configured to move in response to a pressure differential across the low pressure piston such that a resonance frequency of the marine vibrator may be changed.

Abstract: Devices, systems and methods for land seismic. The devices include an above-ground storage tank in which an acoustic energy source is immersed in liquid. The above-ground storage tank may be portable, reusable, self-supporting and may lay flat when empty of liquid and rise on its own when being filled with liquid. The systems include the seismic source-storage tank device, one or more sensors for recording signals that are generated when the source is activated, and a processor for analyzing the recorded signals for geophysical information. The methods involve methods of inducing seismic waves using the seismic source-storage tank devices, and methods of conducting seismic surveys using the seismic source-storage tank devices.

Abstract: A method of attenuating interbed multiples in multiply-reflected seismic waves is performed at a computer system, the method including: providing multiple beams of seismic data and an earth model related to a geological volume; selecting one of the beams as an input beam associated with a pair of source and detector located near a top surface of the geological volume; determining at least one of (i) a source-side stationary pegleg arrival and a corresponding detector-side primary beam and (ii) a detector-side stationary pegleg arrival and a corresponding source-side primary beam; predicting an interbed multiples beam using at least one of (i) the detector-side primary beam delayed by the source-side stationary pegleg arrival and (ii) the source-side primary beam delayed by the detector-side stationary pegleg arrival; and deconvolving the predicted interbed multiples beam with the input beam to remove at least a portion of interbed multiples present in the input beam.

Abstract: Various examples are provided for wavefield extrapolation in anisotropic media. In one example, among others, a method includes determining an effective isotropic velocity model and extrapolating an equivalent propagation of an anisotropic, poroelastic or viscoelastic wavefield. The effective isotropic velocity model can be based upon a kinematic geometrical representation of an anisotropic, poroelastic or viscoelastic wavefield. Extrapolating the equivalent propagation can use isotopic, acoustic or elastic operators based upon the determined effective isotropic velocity model. In another example, non-transitory computer readable medium stores an application that, when executed by processing circuitry, causes the processing circuitry to determine the effective isotropic velocity model and extrapolate the equivalent propagation of an anisotropic, poroelastic or viscoelastic wavefield.

Abstract: A data collection system 100 for estimating a corrected sound speed between a first point and a second point comprises a subsea acoustic transponder beacon (106) disposed at a fixed position relative to a seabed (108), and an acoustic transceiver (214) immersed below a sea surface (104) and above the acoustic beacon (106). A processing resource (200) is also operably coupled to the acoustic transponder (214), the acoustic transceiver (214) being arranged to traverse a path above the acoustic beacon (106) and communicate with the acoustic beacon (106). The processing resource (200) is also arranged to collect time-of-flight data associated with the communication between the acoustic transceiver (214) and the acoustic beacon (106).

Abstract: A system for detecting a location of a subsurface channel may include a portable frame and a plurality of magnetic coils supported by the frame. The magnetic coils may be spaced apart from one another and ends of each of the magnetic coil are unobstructed by other of the magnetic coils.

Abstract: Methods and apparatuses for geophysical surveying are disclosed. In one embodiment, a marine vehicle may obtain magnetic measurements in a location around a drilling site. The magnetic measurements may be used to calculate a localized disturbance magnetic field resulting from, for example, solar flares. The localized disturbance magnetic field may be used to calculate a declination value and, thus, a wellbore position with improved accuracy.

Abstract: The present invention relates to a downhole well-operation system for operating a driving unit and a logging tool downhole and transmitting well-logging data from at least one logging tool to a surface data acquisition system by means of a wireline. The system comprises a surface transceiver, a wireline, a downhole transceiver, a logging tool, and a driving unit, wherein the downhole transceiver is coupled to the surface transceiver via the wireline and communicates to the surface transceiver using orthogonal frequency division multiplexing to transmit data via the wireline by modulating a Pulse Width Modulated (PWM) signal to the wireline by means of a transistor bridge, while the driving unit and at least one logging tool is powered by the wireline. Furthermore, the invention relates to a downhole tool.

Abstract: A three-coil bucking system is used for determination of a formation resistivity property ahead of the drill bit. The conductive drill pipe is provided with non-conductive inserts in the proximity of at least one transmitter and at least two receivers. Transient electromagnetic signals are processed to give the estimate of the resistivity property and for geosteering.

Abstract: A histogram includes a plurality of channels Ch1, Ch2, . . . ChN, which have respective channel numbers C1, C2, . . . CN. ChA with channel number CA, 1<A<N, representing a first peak, is associated with a known first-peak energy (EA). ChB with channel number CB, 1<B<N, A?B, representing a second peak, is associated with a known second-peak energy (EB). A system of equations, including a first equation that is a function of EA and CA and a second equation that is a function of EB and CB, is solved for an energy scale, ?, and a zero offset, E0. A function of EM, CM, ?, and E0 is used to identify features in the histogram, wherein EM is an energy associated with the Mth channel in the histogram, and CM is the channel number of the Mth channel (ChM) in the histogram.

Abstract: A two dimensional scanning laser system may automatically detect a laser, then align and calibrate itself to scan over the sensor area. The system may have a laser with a controller that may cause the laser to be directed over two dimensions, as well as a sensor apparatus. The laser may be controlled with a mirror system that may pivot in two directions, thus allowing the laser to be scanned over a two dimensional area. The sensor may be a point sensor, where the laser may be positioned in a constant direction, as well as a larger area sensor where the laser may be moved across the sensor area to detect objects in a two or three dimensional space. An alignment and calibration sequence may cause the laser to scan across its operational area and detect the location of one or more sensors.

Abstract: A siphon drainage type rainfall remote measurement device with self-compensation function is provided. The bottom existence of a rain collection barrel (2) is connected via a flexible tube (14) to the bottom of a rainfall measuring tube (13) to which a siphon (5) is attached. The tube (13) and a measurement instrument (6) are installed on a holding frame (9). The instrument (6) is connected to a pressure sensor (12) and an accumulator (11) at the bottom of the tube (13). The whole device is fixed in an outer barrel (1). According to the pressure of the bottom of the tube (13), the sensor (12) measures the height of the water level in the tube (13) which is directly proportional to the rainfall. The sensor (12) signal processed by the instrument (6) is transformed into the rainfall, processed by a compensation algorithm and sent by GSM or GPRS.

Abstract: A photonic crystal (PC) device including one or more resonant optical structures defined by the photonic crystal structure is affixed to the end face of an optical fiber. The PC device is fabricated on a separate substrate, and then affixed to the fiber end face. This transfer can be facilitated by device templates which are laterally supported by tabs after an undercut etch. The tabs can be designed to break during transfer to the fiber, thereby facilitating transfer. Registration marks and/or the use of device templates having the same diameter as the fiber can be used to provide lateral alignment of the fiber to the resonant optical structures. Such alignment may be needed to provide optical coupling between the fiber and the resonant optical structures.