136results about How to "Short acquisition time" patented technology

An optical system tracks the motion of objects, including the human body or portions thereof using a plurality of three-dimensional active markers based upon triangulation from data read via multiple linear CCDs through cylindrical lenses. Each marker is lit in sequence so that it is in sync with a frame capture using the imaging system positioned and oriented so as to provide a basis for computing three-dimensional location. In the preferred embodiment, the imaging system detects an infrared signal which is sent out by the tag controller as part of the tag / marker illumination sequence at the beginning of the first tag position capture time. The controller then traverses through the tags in time sync with each imaging system frame capture cycle. Thus, only one unique tag will be lit during each image capture of the cameras, thereby simplifying identification. Using linear CCD sensors, the frame time (i.e. point acquisition time) is very short, allowing very many markers to be sampled and located sequentially in real time.

A method and apparatus of obtaining and reconstructing an image of a portion of a body, administered by a radiopharmaceutical substance, by using Single-photon emission computerized tomography (SPECT) for determination of functional information thereon. The method comprises (a) acquiring gamma ray photons emitted from said portion by means of a detector capable of converting the photons into electric signals, the detector having at least one crystal and allowing said gamma rays having incident angles essentially exceeding 5 degrees and, preferably, exceeding 10 degrees to be detected; (b) processing said electric signals by a position logic circuitry and thereby transforming them into data indicative of positions on said photon detector crystal, where the photons have impinged the detector; and (c) reconstructing an image of a spatial distribution of the pharmaceutical substance within the portion of the body by processing said data and taking into consideration weight values which are functions of angles and, possibly, distances between different elements of the portion of the body and corresponding elements of this position's projection on the detector.

The invention discloses a movement capturing method based on multiple binocular stereo vision. A movement video collecting device is constructed, and human movement video sequences from different orientations are collected by the movement video collecting device. Multiocular movement video sequences shot by a plurality of cameras are calibrated. Marked points matching and tracking of each binocular tracker is finished. Data fusion of three-dimensional tracking result of multiple binocular trackers is completed. The three-dimensional movement information of the marked points acquired by a multiocular fusion device is fed back to the binocular tracker to consummate binocular tracking. On the basis of binocular three-dimensional tracking realized by binocular vision, the invention fuses multiple groups of binocular three-dimensional movement data, resolves parameter acquiring problem of three-dimensional position, tracking, track fusion and the like for a plurality of marked points, increases number of traceable market points and enables the tracking effect to be comparable with three-dimensional movement acquiring device employing multi-infrared cameras for collecting.

The method and system includes detecting atrial fibrillation in a patient by monitoring the blood oxygen saturation level over a period of time. The method and system produces a plethysmographic waveform from the monitored blood oxygen saturation level and analyzes the plethysmographic waveform and detected intervals and determines whether the patient is in atrial fibrillation. The method and system is preferably implemented in a software application and may be configured to report to the user on the current state of atrial fibrillation (AFIB) and a current trend.

An image reconstruction system method for forming an image of media using data acquired from an ultrasound transducer, the method including the steps of detecting relative motion between locations in the media and the transducer; determining relative media velocity from the detecting relative motion; setting a reconstruction period for an image point based on the determined velocity; determining the amount of acquired data to use during the reconstruction period based on the reconstruction period; and using the determined amount of acquired data to reconstruct the image point for display. The system includes a data acquisition system, a processor configured to process the data, and an image display device for displaying the image.

The present invention relates generally to methods and devices of generating an electrical representation of at least one object in a scene in the real word. The detail real-time imager for the representation of a scene of a real world comprises:—at least an illuminator (0501-0511) of said scene providing at least a series of ultra-short power laser pulses with time-related positions; and—a receiver (0515-0523) of a SPAD Single Photon Avalanche Diode detector array according to the method of the invention and associated to at least said series of ultra-short power laser pulses of said illuminator.

The invention provides a method of producing a mass spectrum, comprising:obtaining a transient from the oscillation of ions in a mass analyser;Fourier transforming the transient to obtain a complex spectrum having a real component and an imaginary component; andcalculating an enhanced spectrum which comprises a combination of (i) and (ii) wherein(i) comprises a Positive spectrum; and(ii) comprises an Absorption spectrum.Also provided are an apparatus for producing a mass spectrum suitable for carrying out the method as well as a method of determining a phase correction for a complex spectrum obtained by Fourier transformation from a detected transient obtained from a mass analyser.

A smart external antenna module is proposed for wireless systems. The module allows the advantages of smart antennas to be easily added to existing wireless systems without any modification to the transceiver. Specifically, the smart antenna module weights and combines the signals received by multiple antennas to improve the received signal quality, and then when it detects that there is a signal to be transmitted by the transceiver, it turns off the receiver, turns on the transmitter and uses the receive weights to transmit the signal out of the multiple antennas to improve signal reception at the desired user. Such a module can be added to the external antenna port of an existing transceiver with no change to that transceiver.

The method and system includes detecting atrial fibrillation in a patient by monitoring the blood oxygen saturation level over a period of time. The method and system produces a plethysmographic waveform from the monitored blood oxygen saturation level and analyzes the plethysmographic waveform and detected intervals and determines whether the patient is in atrial fibrillation. The method and system is preferably implemented in a software application and may be configured to report to the user on the current state of atrial fibrillation (AFIB) and a current trend.

The invention relates to a terminal positioning method, apparatus and system, and belongs to the field of electronic technology application. The method includes receiving short-distance communication signals sent by other terminals, and determining the position information of a target terminal according to the positional information of the other terminals, wherein the short-distance communication signals contain the positional information of the other terminals other than the target terminal. The problems of long time delay of terminal positioning and low positioning accuracy are solved, and the terminals can be positioned accurately in a short time period. The terminal positioning method, apparatus and system are used for positioning terminals.

The invention provides a quick detection method for detecting the content of various compositions in honey by utilization of a mathematical model between a near infrared spectrum of the honey and the contents of the various compositions of the honey, in order to overcome the defects of complex operation and labor and time consumption in a chemical and chromatographic analysis method for detecting the quality of the honey. The quick detection method for the quality of the honey is as follows: firstly, obtaining a honey sample in the homogeneous fluid state; secondly, acquiring the near infrared spectrum; and thirdly, converting the near infrared spectrum acquired into the quality parameter of the honey by utilization of the mathematical model. The quick detection method for the quality of the honey can quickly and accurately detect the contents of water, soluble solid content, organic acid, fructose, glucose, sucrose and maltose in the honey.

There is provided a received data processing apparatus of photoacoustic tomography including a minimum constitution unit data composition unit that sequentially reads receiving digital signals from first storage units and composes minimum constitution unit data of the acoustic wave of the minimum constitution units by performing a delay-and-sum process; a second storage unit that stores the minimum constitution unit data of the entire region of the specimen; an image construction unit that constructs an image of the specimen based on the minimum constitution unit data stored in the second storage unit; and a control unit that sequentially stores the minimum constitution unit data calculated by the minimum constitution unit data composition unit in the second storage unit and reads the stored minimum constitution unit data of the entire region of the specimen to transmit the minimum constitution unit data to the image construction unit.

The method and system includes detecting atrial fibrillation in a patient by monitoring the blood oxygen saturation level over a period of time. The method and system produces a plethysmographic waveform from the monitored blood oxygen saturation level and analyzes the plethysmographic waveform and detected intervals and determines whether the patient is in atrial fibrillation. The method and system is preferably implemented in a software application and may be configured to report to the user on the current state of atrial fibrillation (AFIB) and a current trend.

Hashimoto's Thyroiditis (HT) is the most common type of inflammation of the thyroid gland and accurate diagnosis of HT would be advantageous in predicting thyroid failure. The application presents three tier architecture for image-based diagnosis and monitoring application using Cloud is described. The presentation layer is run on the tablet (mobile device), while the business and persistence layer runs on a single cloud or distributed on different Clouds in a multi-tenancy and multi-user application. Such architecture is used for automated data mining application for diagnosis of Hashimoto's Thyroiditis (HT) Disease using ultrasound.

The invention relates to a method of MR imaging of at least a portion of a body (10) placed in a main magnetic field Bo within the examination volume of a MR device. It is an object of the invention to enable MR imaging with reliable motion detection and high image quality. The method of the invention comprises the following steps: subjecting the portion of the body (10) to an imaging sequence comprising one or more RF pulses and switched magnetic field gradients for acquiring imaging signals; subjecting the portion of the body (10) to a navigator sequence applied at least once before, during, or after the imaging sequence, the navigator sequence comprising one or more RF pulses and switched magnetic field gradients controlled in such a manner that navigator signals are acquired by means of a single-point or multi-point Dixon technique; deriving translation and / or rotation and / or shear data from the navigator signals, which translation and / or rotation and / or shear data reflect motion occurring within the body (10) during the acquisition of the imaging signals; reconstructing a MR image from the imaging signals, wherein the translation and / or rotation and / or shear data are used for adapting the imaging sequence and / or for motion correction during reconstruction of the MR image. Moreover, the invention relates to a MR device (1) and to a computer program to be run on a MR device (1).

The invention is suitable for the spectral imaging technical field, and provides a coded aperture spectral imaging system which comprises a preposition imaging system, a digital micro-mirror, a collimation system, a reflection raster, a microlens array and a detector. The microlens array comprises a plurality of microlenses; the filtering bands of the filtering layer on each microlens are different; the preposition imaging system images an object to be measured on the digital micro-mirror; the image after coded modulation is incident on the reflection raster through the collimation system to perform light splitting; a space spectrum mixing image is obtained after light splitting; a plurality of images are obtained through the microlens array with a filtering function; the detector simultaneously receives the plurality of images, and performs fusion decoding on the plurality of images to obtain the spectral information of the object to be measured. The coded aperture spectral imaging system can maintain system single rapid measurement, and meanwhile substantially improve system spatial resolution.

In a wireless communication device which is transportable between plural geographic region, wherein each geographic region has preferred and non-preferred communication systems for the wireless communication device, a method of selecting an appropriate communication system, including providing the wireless communication device with a non-PRL system table for storing acquisition parameters, including a communication system identification, a band class designation for a band class, a channel designation for a channel in the band class, and geographic region identification; making entries in the non-PRL system table when the wireless communication device acquire an appropriate channel in a geographic region; searching the non-PRL system table when the wireless communication device next changes geographic regions; and selecting a communication system based on the acquisition parameters in the non-PRL system table as a result of the searching.

The present invention relates to a browning detecting method of the liquid food. The liquid food is provided with fluorescence itself or is provided with fluorescence in browning. The method comprises the following procedures: obtaining a plurality of food samples with different browning degrees; collecting a fluorescence spectrum of the liquid food sample, and measuring the reference value representing the browning degree of the liquid food; establishing a corresponding relationship between the fluorescence spectrum and the browning degree according to the reference value; and collecting the fluorescence spectrum of the liquid food to be measured, and confirming the browning degree according to the corresponding relationship between the fluorescence spectrum and the browning degree. The liquid food browning detecting method of the invention executes browning detection to the liquid food which has fluorescence itself or generates fluorescent material in the browning procedure. The preliminary treatment of the sample is not required and the invention has advantages of high speed, no destruction, high sensitivity and broad application sphere. The on-line and real-time detection to the browning of the liquid food is provided with a supporting technique.

The invention discloses a magnetic resonance imaging method and device. The method combines a deep network model with a conventional acceleration reconstruction method in sequence. Firstly, the deep network model is used for recovering first imaging information with a high downsampling multiple to second imaging information with a low downsampling multiple, then, the conventional acceleration reconstruction method is used for completely reconstructing the second imaging information with the low downsampling multiple, and therefore, a final magnetic resonance image is obtained. Therefore, in the magnetic resonance imaging method provided by the invention, the output training sample of the deep neural network used for magnetic resonance quick imaging is not full sampling or super-full sampling data but is downsampling data, so that the output training sample of the training deep neural network can be obtained through a conventional downsampling method, the output training sample can be obtained through short collection time, and therefore, the deep neural network can be applied to a magnetic resonance imaging application scene with limited collection time, such as abdomen scanning.

A magnetic resonance imaging method is proposed wherein a magnetic resonance image is reconstructed from magnetic resonance signals from respective signal channels. More specifically, individual signal channels relate to respective surface coils which are employed as receiver antennas for the magnetic resonance signals. The magnetic resonance signals are acquired with sub-sampling of the k-space. Resampling on a regular square grid is performed, thus enabling fast Fourier transformation in the reconstruction of the magnetic resonance image. Furthermore, the reconstruction is carried out on the basis of the spatial sensitivity profile of the receiver antennas, i.e. of the surface coils, so as to separate contributions from different spatial positions in the sub-sampled magnetic resonance signals. Preferably, a spiral-shaped acquisition trajectory is followed in the k-space.

An MR imaging apparatus is presented and includes a plurality of gradient coils positioned about a bore of a magnet to impress a polarizing magnetic field. An RF transceiver system and an RF switch are controlled by a pulse module to transmit and receive RF signals to and from an RF coil assembly to acquire MR images. The MR imaging apparatus also includes a computer programmed to apply a 3D imaging sequence and acquire MR data using a segmented acquisition. The computer is further programmed to reconstruct an image from the MR data that is substantially free of eddy current induced artifacts.

A hearing aid with a communication circuit for wireless communication, the circuit includes a receiver for reception of data, and a communication controller that is configured for determining a delay between a receiver activation and an actual start of reception of data, and adjusting a next receiver activation in accordance with the determined delay.

A system and method are disclosed to acquire high temporal resolution free-breathing cardiac MR images. The technique includes monitoring heart rate of a patient just prior to image acquisition to acquire a time period of an R—R interval, and using this time period from the heart rate monitoring to prospectively estimate future R—R intervals. The acquisition of MR data can then commence at any point in an R—R interval and extend for the time period recorded. The data acquisition can be segmented and acquired in successive R—R intervals, then combined to create high temporal resolution images.

The invention discloses a linear array antenna simultaneous MIMO-SAR imaging system and method. The system comprises linear array antennas, a linear array antenna orthogonal frequency division MIMO transceiving device, a data acquiring device, a preprocessing module and an imaging processing module, wherein the linear array antennas comprise the linear transmitting array antennas and the linear receiving array antennas, the linear array antenna orthogonal frequency division MIMO transceiving device generates a plurality of paths of radio frequency signals and transmits the paths of radio frequency signals to the transmitting array antennas at the same time, the linear array antenna orthogonal frequency division MIMO transceiving device is also used for receiving a plurality of paths of echo signals from the linear receiving array antennas at the same time and generating video echo signals based on the paths of echo signals, the data acquiring device acquires the video echo signals and generating imaging echo digital signals according to the video echo signals, the preprocessing module performs phase compensation on the imaging echo digital signals according to fixed phase deviation, and the imaging processing module performs imaging on the imaging echo digital signals having been subjected to phase compensation. Therefore, the multi-input multi-output working mode of signals can be achieved, the pulse repeating frequency of the imaging system does not need to be improved, and the imaging system can achieve remote non-fuzzy imaging and large-breadth imaging easily.