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Tomography patents



      
           
This page is updated frequently with new Tomography-related patent applications. Subscribe to the Tomography RSS feed to automatically get the update: related Tomography RSS feeds. RSS updates for this page: Tomography RSS RSS


Ophthalmic analysis apparatus and ophthalmic analysis program

Ophthalmic imaging apparatus

Date/App# patent app List of recent Tomography-related patents
07/24/14
20140207418
 Real-time resampling of optical coherence tomography signals using a field programmable gate array patent thumbnailnew patent Real-time resampling of optical coherence tomography signals using a field programmable gate array
A signal processing system implemented on a field programmable gate array (fpga) operates according to a low frequency k-clock to sample optical coherence topography (oct) signals, as opposed to relying on a high frequency k-clock to obtain the same information. A resampler is used to resample the oct signal uniformly in the optical frequency domain.
07/24/14
20140206983
 Pet/mr scanners for simultaneous pet and mr imaging patent thumbnailnew patent Pet/mr scanners for simultaneous pet and mr imaging
In a combined system, a magnetic resonance (mr) scanner includes a magnet configured to generate a static magnetic field at least in a mr examination region from which mr data are acquired. Radiation detectors are configured to detect gamma rays generated by positron-electron annihilation events in a positron emission tomography (pet) examination region.
07/24/14
20140206982
 Method and apparatus for implementing a positron emission tomography patent thumbnailnew patent Method and apparatus for implementing a positron emission tomography
A method is disclosed for implementing a positron emission tomography of an examination object. In an embodiment of the method, after introducing a pet tracer into the examination object, the method includes implementing at least one functional magnetic resonance tomography for determining at least one respective measure of the activation of at least one respective brain area; implementing positron emission tomography; and adjusting a result of the positron emission tomography as a function of the at least one respective measure of the activation of at least one respective brain area.
07/24/14
20140205170
 Fast iterative image reconstruction method for 3d computed tomography patent thumbnailnew patent Fast iterative image reconstruction method for 3d computed tomography
This invention relates to a high resolution and low dosage tomographic imaging in three dimensions, and more particularly, to a fully analytical fast iterative statistical algorithm for image reconstruction from projections obtained in a spiral cone-beam x-ray scanner is described. The presented method allows to improve the resolution of the reconstructed images and/or to decrease the x-ray intensity while maintaining the quality of the obtained ct images, because the signals obtained are adapted to the specific statistics for this imaging technique.
07/24/14
20140205169
 Ophthalmic analysis apparatus and ophthalmic analysis program patent thumbnailnew patent Ophthalmic analysis apparatus and ophthalmic analysis program
There is provided an ophthalmic analysis apparatus configured to acquire an analysis result of a tomographic image of a subject eye which is acquired by using optical coherence tomography (oct), and to output the analysis result. The apparatus functions as a display control unit configured to control a display unit to display a two-dimensional image based on an oct tomographic image; an analysis region setting unit configured to set multiple analysis regions on the two-dimensional image displayed on the display unit by the display control unit; and an output control unit configured to acquire an analysis result in the multiple analysis regions set by the analysis region setting unit and to output the acquired analysis result..
07/24/14
20140205058
 Radiographic apparatus and an image processing method therefore patent thumbnailnew patent Radiographic apparatus and an image processing method therefore
Initial values â1p̂1m̂1 . .
07/24/14
20140204391
 Method and system for optical coherence tomography patent thumbnailnew patent Method and system for optical coherence tomography
To facilitate a reliable and time-saving examination of the object (1), with the most straightforward handling possible, the first image (60) is acquired in the region of the first plane (s) of the object (1) and the second image (61) is acquired in the region of the second plane (f) of the object (1) in real time, and the first image (60) or the second image (61) is rendered as a real time image and the respectively other image, i.e. The second or the first image (61 or 60 respectively), is rendered as a still image on the display device (52) depending on a control command, in particular one entered by an operator..
07/24/14
20140204341
 Ophthalmic imaging apparatus patent thumbnailnew patent Ophthalmic imaging apparatus
There is provided an ophthalmic imaging apparatus including an optical coherence tomography (oct) optical system for acquiring a tomographic image of a subject eye, an observation optical system configured to acquire a front image of the subject eye. The apparatus functions as an image generation unit which repeatedly generates the tomographic image based on an output signal from the oct optical system, and repeatedly generates the front image based on an output signal from the observation optical system, a determination unit which detects a positional deviation between a reference front image and each of front images generated by the image generation unit, and determines consecutiveness of the front images whose positional deviation satisfies a permissible range, and a selection process unit which selects one of multiple tomographic images generated by the image generation unit, based on a determination result by the determination unit..
07/17/14
20140200848
 Normalization coefficients in pet continuous bed motion acquisition patent thumbnailNormalization coefficients in pet continuous bed motion acquisition
Normalization coefficients in are computed for positron emission tomography (pet) continuous bed motion acquisition (cbm). The normalization coefficients for the lines-of-response in cbm account for the change in decay of the injected isotope over time and/or changes in velocity of the bed motion..
07/17/14
20140200816
 Seismic data processing patent thumbnailSeismic data processing
Described herein are implementations of various technologies for a method for processing seismic data corresponding to a region of interest. The method may receive the seismic data.
07/17/14
20140200814
Dip tomography for estimating depth velocity models by inverting pre-stack dip information present in migrated/un-migrated pre-/post-stack seismic data
Methods and systems for dip constrained non-linear tomography in seismic data. An additional term, comprising the dip associated with the kinematic migration of locally coherent events, is introduced into the cost function.
07/17/14
20140200434
Vibrational photoacoustic tomography using raman laser
A method of noninvasively imaging tissue within a body includes irradiating the tissue using an imaging laser including a raman-based laser tuner, the radiation including a plurality of laser pulses, each having energy greater than 100 mj; receiving an acoustic signal generated by vibrational energy in the tissue, wherein the vibrational energy is a result of selective overtone excitation of molecules in the tissue by the radiation; and automatically converting the acoustic signal to an image representative of the tissue using a processor. An imaging system includes an imaging laser configured to irradiate tissue with a plurality of laser pulses using a raman-based laser tuner.
07/17/14
20140198894
Topogram from a spiral reconstruction
A computed tomography system is disclosed, along with a method and computer program product. An embodiment uses such a spiral acquisition to reconstruct a spatial three-dimensional image of the examination region.
07/17/14
20140198893
Excised specimen imaging using a combined pet and micro ct scanner
Embodiments of the present invention provide methods and apparatus for imaging a tissue specimen excised during surgery with a combined positron emission tomography (pet) and micro computed tomography (micro ct) scanner. The specimen is scanned with a ct imaging system of the combined pet and micro ct scanner.
07/17/14
20140198310
Balanced-detection spectra domain optical coherence tomography system
A balanced-detection spectra domain optical coherence tomography system is disclosed. A light beam l emitting from the light source module is passed through the second beam splitter, the first beam splitter in series, and then split to the mirror and the sample respectively, and further simultaneously reflected to the first beam splitter, a light beam l1 and a light beam l2 are refracted by the first beam splitter and the second beam splitter respectively, and then transmitted to the first collimator and the second collimator respectively, and a phase difference between the light beam l1 and the light beam l2 is 180°.
07/17/14
20140197320
Multiple timing measurements for positron emission tomography
Timing is determined in positron emission tomography (pet). Two or more different types of timing detection are used for each event.
07/10/14
20140194738
Method for focused acoustic computed tomography (fact)
A method for acoustic tomography within a patient may include generating a focused ultrasonic signal using a transducer is provided; the ultrasonic signal forming a path within the patient. The method includes directing the ultrasonic signal on a spot within the patient; scanning the spot in a predetermined pattern about a volume within the patient; receiving an ultrasonic echo in the transducer; converting the ultrasonic echo into a voltage; selecting a frequency band from the voltage; amplifying the voltage in the selected frequency band with a processing circuit; and generating an image of the volume within the patient structure utilizing the amplified voltage.
07/10/14
20140194620
18f-labeled precursor of pet radioactive medical supplies, and preparation method thereof
The present invention relates to a precursor of positron emission tomography (pet) radioactive medical supplies, a preparation method thereof, and an application thereof, and more specifically, to a precursor having a tetravalent organic salt leaving group, a preparation method, and a method for preparing desired pet radioactive medical supplies in a high radiochemical yield within a short preparation time by introducing 18f using the same through a single step. The precursor having a tetravalent organic salt leaving group of the present invention can simplify the known complex multistep preparation of radioactive medical supplies into a single step, can save production costs because an excessive amount of a phase transfer catalyst is not required, facilitates separation of a compound after reaction, and enables rapid reaction velocity.
07/10/14
20140193338
Compounds for use in imaging, diagnosing and/or treatment of diseases of the central nervous system
This invention relates to novel compounds suitable for labelling by 18f and the corresponding 18f labelled compounds themselves, 19f-fluorinated analogues thereof and their use as reference standards, methods of preparing such compounds, compositions comprising such compounds, kits comprising such compounds or compositions and uses of such compounds, compositions or kits for diagnostic imaging by positron emission tomography (pet).. .
07/10/14
20140192952
Modulating gantry rotation speed and image acquisition in respiratory correlated (4d) cone beam ct images
A method of optimizing 4d cone beam computed tomography (4dcbct) imaging is provided that includes using a scanner to generate projections of a target, where the projections are used to form a cone beam computed tomography (cbct) scan of the target, where the cbct includes a 3d image of the target, and using an appropriately programmed computer to control rotation speed of a gantry and projection acquisition of the cbct in real-time according to a measured patient respiratory signal, where the real-time acquisition of the cbct forms an optimized 4dcbct image set.. .
07/10/14
20140192950
Computed tomography system with dynamic bowtie filter
A ct apparatus for scanning an object is provided. An x-ray source is provided, wherein the x-ray source provides a collimated x-ray beam with a cross-section with a length and thickness.
07/10/14
20140192324
Spectral domain optical coherence tomography system
An optical coherence tomography device is disclosed for improved imaging. Reduced levels of speckle in the images generated by the device are obtained by forming a b-scan from a plurality of a-scans, wherein each resolution cell of the b-scan is generated through compounding of a subset of the a-scans and wherein at least some of the subset of a-scans are separated by at least half the diameter of a speckle cell both tangent to and orthogonal to the b-scan at that cell..
07/03/14
20140187929
Intravascular optical coherence tomography system with pressure monitoring interface and accessories
An optical coherence tomography system and method with integrated pressure measurement. In one embodiment the system includes an interferometer including: a wavelength swept laser; a source arm in communication with the wavelength swept laser; a reference arm in communication with a reference reflector; a first photodetector having a signal output; a detector arm in communication with the first photodetector, a probe interface; a sample arm in communication with a first optical connector of the probe interface; an acquisition and display system comprising: an a/d converter having a signal input in communication with the first photodetector signal output and a signal output; a processor system in communication with the a/d converter signal output; and a display in communication with the processor system; and a probe comprising a pressure sensor and configured for connection to the first optical connector of the probe interface, wherein the pressure transducer comprises an optical pressure transducer..
07/03/14
20140187928
Method for estimating flow rates, pressure gradients, coronary flow reserve, and fractional flow reserve from patient specific computed tomography angiogram-based contrast distribution data
An embodiment in accordance with the present invention provides a method for non-invasively determining the functional severity of coronary artery stenosis. The method includes gathering patient-specific data related to concentration of a contrast agent within a coronary artery of a patient using a coronary computed tomography angiography scan (ccta).
07/03/14
20140187926
Rotation type optical tomography scanner
A rotation type optical tomography scanner is provided, including an illuminating unit disposed on a surface of an object-to-be-detected for emitting incident light to tissues under the surface of the object-to-be-detected; a detecting unit disposed on the object-to-be-detected and rotating around the illuminating unit to receive diffuse light diffused from the tissues under the surface of the object-to-be-detected and generate tissue sensing information; and a positioning unit for generating position information of the rotation type optical tomography scanner. The rotation type optical tomography scanner transmits the sensing information and the position information to a remodel module to rebuild the tissue images under the surface of the object-to-be-detected, thereby expanding the scanning range of the object-to-be-detected..
07/03/14
20140187912
Positioning device, image projecting system and method for overlapping images
A positioning device, an image projecting system and a method for overlapping images are provided. The positioning device is applied to a computed tomography process and a magnetic resonance imaging process.
07/03/14
20140187904
Method and system for determining whether arterial tissue comprises atherosclerotic plaque
Provided herein are methods and systems to determine at least one mechanical property of a tissue sample and, based upon the determined at least one mechanical property, whether the tissue sample comprises atherosclerotic plaque. The method comprises generating a shear wave in an arterial tissue sample by applying an acoustic impulse thereto; measuring propagation of the shear wave via an optical coherence elastography apparatus; determining at least one mechanical property of the arterial tissue sample based on the propagation of the shear wave; and comparing the at least one mechanical property of the arterial tissue sample to a reference data set to determine whether the arterial tissue sample comprises atherosclerotic plaque.
07/03/14
20140185897
Computed tomography method, computer software, computing device and computed tomography system for determining a volumetric representation of a sample
A method of using computed tomography for determining a volumetric representation of a sample, involving a first reconstruction for reconstructing first reconstructed volume data of the sample from first x-ray projection data of the sample taken by an x-ray system, a second reconstruction for reconstructing second reconstructed volume data of the sample from second x-ray projection data of the sample taken by an x-ray system, characterized by calculating first individual confidence measures for single voxels of the first reconstructed volume data, calculating second individual confidence measures for single voxels of the second reconstructed volume data, and calculating, in a subsequent step, at least one resulting set of individual values for each voxel based on the first individual confidence measures and the second individual confidence measures.. .
07/03/14
20140185896
Conditional likelihood material decomposition and methods of using the same
Embodiments of methods and apparatus are disclosed for obtaining a radiographic phase-contrast digital computed tomography imaging system and methods for same that can include obtaining a first and second plurality of 2d projection images over a range of scan angles, generating at least two statistically independent reconstructed images of an object from the first plurality of 2d projection images and the second plurality of 2d projection images, determining a material property as a function of volume for each of at least two materials represented in the projection images, using a conditional likelihood determination comprising the material property as a function of volume and the at least two statistically independent reconstructed images to differentiate the at least two materials in a reconstructed image of the object.. .
07/03/14
20140185741
Multi-energy ct imaging system and imaging method
The present invention relates to a computed tomography (ct) imaging system, in particular to a multi-energy ct imaging system and imaging method.. .
07/03/14
20140185055
Methods and systems for integrated imaging using optical coherence tomography and photoacoustic imaging
Systems and methods for photoacoustic imaging are provided. Photoacoustic signals are excited from a body and the excited photoacoustic signals are detected with a low coherence interferometer system serving as a photoacoustic detector.
06/26/14
20140180080
Method for estimating pressure gradients and fractional flow reserve from computed tomography angiography: transluminal attenuation flow encoding
An embodiment in accordance with the present invention provides a method for non-invasively determining the functional severity of coronary artery stenosis. The method includes gathering patient-specific data related to concentration of a contrast agent within a coronary artery of a patient using a coronary computed tomography angiography scan (ccta).
06/26/14
20140180079
Guarded imaging devices and methods
An integrated therapeutic and imaging device that uses at least two balloons to provide a guarded zone that can be evacuated and replaced with a fluid that is sufficiently clear to permit optical coherence tomography (or even high resolution ultrasound) imaging that would otherwise be of poor quality or impossible. Methods of making and operating the imaging device to obtain clear, high quality images, as well as treating a patient's tissue with the device within a living body in association with obtaining an image of the patient's tissue, are included..
06/26/14
20140180034
Simultaneous imaging, monitoring, and therapy
Using the disclosed intravascular devices it is possible to image tissues, deliver therapy, and evaluate the tissue after the therapy is delivered. One embodiment is a catheter configured to provide ultrasound imaging, drug delivery, and doppler flow analysis.
06/26/14
20140177785
Method and apparatus for multiple x-ray imaging applications
The present invention pertains to an apparatus and method for medical imaging comprising rotating two x-ray source-detector pairs around an axis of rotation simultaneously to quickly acquire image data and form a computed tomography (ct) dataset. The sources can be configured to emit radiation from a plurality of discrete locations.
06/26/14
20140176963
Optical coherence tomography system that is reconfigurable between different imaging modes
The invention generally relates to an optical coherence tomography system that is reconfigurable between two different imaging modes and methods of use thereof.. .
06/26/14
20140176961
Manual calibration of imaging system
The invention generally relates to methods for manually calibrating imaging systems such as optical coherence tomography systems. In certain aspects, an imaging system displays an image showing a target and a reference item.
06/26/14
20140176960
Polarization sensitive optical coherence tomography system
The invention generally relates to a polarization sensitive optical coherence tomography (oct) system that includes both polarization maintaining and single mode optical fiber and methods of use thereof.. .
06/26/14
20140176958
Oct system with bonded mems tunable mirror vcsel swept source
A microelectromechanical systems (mems)-tunable vertical-cavity surface-emitting laser (vcsel) in which the mems mirror is a bonded to the active region. This allows for a separate electrostatic cavity, that is outside the laser's optical resonant cavity.
06/26/14
20140176905
Image processing apparatus, image processing system, image processing method, and image processing computer program
An image processing apparatus according to the present invention includes an acquisition unit configured to acquire a tomography image of a target to be captured, a detection unit configured to detect layer boundaries of a plurality of layers sequentially positioned in the depth direction from the acquired tomography image, and a determination unit configured to determine a structure of the target to be captured according to the number of the detected layer boundaries.. .
06/26/14
20140176903
Two-dimensional confocal imaging using oct light source and scan optics
Various approaches are disclosed for simultaneously generating optical coherence tomography (oct) and confocal scanning laser images by spatially separating the signal normally used for oct imaging with selective reflecting or beam directing devices. In one preferred embodiment, the invention includes a minor having a central transmission region, such that the radially outer region of the returning signal beam is reflected and used for generating a confocal image while the central part of the signal beam is transmitted and used to generate an oct image.
06/19/14
20140169651
Shape-extraction method and shape-extraction system
An unknown surface shape of a physical object can be extracted with good precision. Image data of a projective image that has been acquired by radiation projection to an object is acquired.
06/19/14
20140169649
Ct image reconstruction with edge-maintaining filtering
A method is disclosed for reconstructing image data of an examination object from measurement data, wherein the measurement data were captured previously during a relative rotational movement between a radiation source of a computed tomography system and the examination object. Filtered measurement data are calculated from the measurement data.
06/19/14
20140168753
Apparatus and method for operating an acousto-optical component
An apparatus for controlling an acousto-optical component influencing at least one of illumination light and detection light in a microscope is described. The apparatus comprises a radio-frequency generator for supplying the acousto-optical component with a radio frequency.
06/19/14
20140168657
Optical tomography device
An optical tomography device 1 is provided as one capable of obtaining tomographic information of a measuring object with higher accuracy. In the optical tomography device 1, numerical apertures of reception fibers 12, 13 are different from each other.
06/12/14
20140163537
Apparatus and method for real-time imaging and monitoring of an electrosurgical procedure
An optical coherence tomography probe and laser combination device configured for real-time z-directional guidance of the incisional depth of a surgical procedure. It can be used alone or placed within the working channel of an endoscope.
06/12/14
20140163534
Laser eye surgery system
A laser eye surgery system includes a laser source, a ranging subsystem, an integrated optical subsystem, and a patient interface assembly. The laser source produces a treatment beam that includes a plurality of laser pulses.
06/12/14
20140161352
Iterative method for determining a two-dimensional or three-dimensional image on the basis of signals arising from x-ray tomography
An iterative method for determining a two—or—three-dimensional image on the basis of signals arising from x-ray tomography, comprises: segmenting the image by separating distinct materials respectively by level lines for 2d or level surfaces for 3d; and adapting the mesh, triangular for 2d or tetrahedral 3d, in which points are distributed in a homogeneous manner respectively over a level line for 2d or over a level surface for 3d, serving to formulate the progressively coarse triangular mesh for 2d or tetrahedral mesh for 3d, so that the number of distributed points depends respectively, for a line, on the ratio of the length of the line to the length of the minimum line from among the lines of the segmented image, or, for a surface, on the ratio of the area of the surface to the area of the minimum surface from among the surfaces of the segmented image.. .
06/12/14
20140161336
Dynamic adaptation of a degree of signal compression for mrt image processing
An apparatus and a method for generating an image from n reception signal data sets of signals received by a plurality of coils of a magnetic resonance tomography appliance from a region of a body to be examined using an image processing computer are provided. The apparatus includes a degree-of-compression determining device.
06/12/14
20140161221
X-ray computed tomography apparatus
An x-ray computed tomography apparatus according to an embodiment includes an x-ray tube, a bias power supply, and an x-ray control unit. The x-ray tube includes a cathode, an anode, and a grid between the cathode and the anode.


Popular terms: [SEARCH]

Tomography topics: Tomography, Imaging System, Computed Tomography, Positron Emission Tomography, Control Unit, Data Acquisition, Ion Source, Semiconductor, Charge Amplifier, Single Photon

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