|| List of recent Tomography-related patents
| Systems and methods for attenuation correction in time-of-flight positron emission tomography|
Systems and methods for attenuation correction in time-of-flight (“tof”) positron emission tomography (“pet”) imaging are provided. In some aspects, a provided pet system includes a plurality of detectors arranged about a bore configured to receive the subject, the plurality of detectors configured to acquire gamma rays emitted from the subject as a result of a radiotracer administered to the subject.
| Optical coherence tomography imaging systems and methods|
Optical coherence tomography imaging systems and methods are disclosed. According to an aspect, an optical coherence tomography imaging system includes a scanner configured to obtain images and to convert the images to electrical signals.
| Multilayered tissue phantoms, fabrication methods, and use|
A method for producing a multilayer tissue phantom involves successively forming at least two layers, each layer formed by depositing a viscous flowable material over a supporting element or over a previously formed layer of the phantom supported by the supporting element, selectively redistributing the material while material is solidifying to control a thickness distribution of the layer, and allowing the material to solidify sufficiently to apply a next layer. The supporting element supports the material in 2 or 3 directions and effectively molds a lumen of the tissue.
National Research Council Of Canada
| Microscope-integrated oct system with an electrically tunable focus|
A surgical imaging system is provided. The surgical imaging system includes a surgical microscope and a telecentric optical coherence tomography scanning unit configured to scan a sample through at least one optical component associated with the surgical microscope..
The Cleveland Clinic Foundation
| Patient-adaptive b0 homogenization of mr systems using different types of shim coils|
The embodiments relate to methods and to magnetic resonance tomography systems having a shim system, where the shim system includes at least one global shim coil in an area surrounding the bore of the magnetic resonance tomography system, and where the shim system includes a local shim coil in a local coil of the magnetic resonance tomography system with a shim controller, where the shim controller embodied to define shim currents for the global shim coil and for the local shim coil.. .
|Histological differentiation grade prediction of hepatocellular carcinoma in computed tomography images|
A method of determining the histological grade of hepatocellular carcinoma (hcc) including: acquiring a computed tomography (ct) image of a person including an hcc tumor; delineating the hcc tumor; and assigning a histological grade to the hcc tumor, wherein assigning the histological grade to the hcc tumor includes: applying a plurality of filters to the hcc tumor, wherein each of the filters produces a corresponding response image and, for each of the filters, a convolution operation is performed on the filter and the ct image to produce the response image corresponding to that filter; computing an average response of the hcc tumor in each of the response images and recording each of the average responses as an independent subspace analysis (isa) feature; and determining the histological grade of the hcc tumor based on the isa features by using a classifier.. .
|Method and tomographic x-ray imaging and source configuration|
The present invention pertains to an apparatus and method for inverse geometry volume computed tomography medical imaging of a human patient. A plurality of stationary x-ray sources for producing x-ray radiation are used.
Triple Ring Technologies, Inc.
|Optical coherence tomography with an extended dynamic range|
The invention lies in the field of optical metrology and relates to optical coherence tomography (oct). In particular, the invention relates to an apparatus and a method for the depth-dependent adaptation of the dynamic range of an oct system to the profile of the backscattered power to be measured.
Karlsruher Institut FÜr Technologie
|Method and optical imaging via spectral encoding|
Exemplary method, apparatus and arrangement can be provided for obtaining information associated with a sample such as a portion of an anatomical structure. The information can be generated using first data, which can be based on a signal obtained from a location on the sample, and second data, where the second data can be obtained by combining a second signal received from the sample with a third reference signal.
The General Hospital Corporation
|Modular stretchable and flexible capacitance sensors for use with electrical capacitance volume tomography & capacitance sensing applications|
A flexible capacitance sensor having multiple layers for communicating signals to a data acquisition system for reconstructing an image of an area or object located in a subject being sensed, the flexible capacitance sensor having a flexible layer of capacitance plates; a flexible shielding ground layer next to the layer of capacitance plates; a flexible layer of signal traces next to the shielding ground layer, where the layer of signal traces has a plurality of trace lines; and where the capacitance sensor is flexible and adapted to be wrapped around the subject being sensed. The sensor is adapted to communicate signals via the plurality of trace lines to a data acquisition system for providing an image of the area or object between the capacitance plates..
Acoustic probing technique for the determination of multiple liquid/froth interfaces in separation and storage vessels based on an oblique tomographic analysis approach
Apparatus is provided featuring a signal processor configured to receive from an array of ultrasonic transponders around a tank, container or flow pipe signaling containing information about acoustic waves of energy penetrating a fluid in the tank, container or flow pipe; and determine using tomography a three-dimensional image of layers of the fluid in the tank, container or flow pipe based at least partly on the signalling received and. The signal processor provides corresponding signal containing information about the three-dimensional image of the layers of the fluid in the tank, container or flow pipe.
Cidra Corporate Servc
A positron emission tomography (pet)-magnetic resonance imaging (mri) apparatus according to an embodiment includes a gantry having a static magnetic field magnet, a gradient coil, and a radio frequency coil, a pet detector, and a moving mechanism. The static magnetic field magnet generates a static magnetic field in a bore having an approximately cylindrical shape.
Toshiba Medical Systems Corporation
Imaging portable stereoscopic tomography
A portable imaging apparatus for obtaining stereoscopic radiography images has a transport frame that has a support structure and an x-ray source array that is coupled to the support structure and that has three or more x-ray sources, each x-ray source separately energizable to emit radiation toward a subject. There is at least one x-ray detector adapted to acquire digital image data according to radiation received from the x-ray sources of the x-ray source array.
Carestream Health, Inc.
Multi-mode cone beam ct radiotherapy simulator and treatment machine with a flat panel imager
A multi-mode cone beam computed tomography radiotherapy simulator and treatment machine is disclosed. The radiotherapy simulator and treatment machine both include a rotatable gantry on which is positioned a cone-beam radiation source and a flat panel imager.
Varian Medical Systems, Inc.
Method for recording projections during a spiral scan, imaging and multi-slice computed tomography device
In an embodiment, a method includes at least moving a patient table through a measurement region of the computed tomography device, the movement of the patient having at least one phase of variable speed during the projection recording, time-solved determination or recording of the patient table position, time-resolved recording of projections of at least one part of an examination object moving with the table, the number of the slices contributing to the recording being varied during the at least one phase of variable speed of the patient table as a function of the table speed in such a way that the quotient formed from the current table speed divided by the number of the slices contributing to the recording is constant so that the pitch factor is kept constant during the projection recording, and time-resolved determination or recording of the number or slices contributing to the projection recording.. .
Optical coherence tomography and control the same
Disclosed is an optical coherence tomography which includes: a light source unit for outputting light; a light splitting unit for splitting the light, which is reflected from a sample, into visible light and oct source beam; a detection unit for detecting the visible light and the oct source beam; and a display unit for displaying a first image based on the detected visible light and a second image based on the detected oct source beam.. .
Lg Electronics Inc.
Dielectric-enhanced metal coatings for mems tunable filters
The present invention concerns the use of hybrid metal-dielectric optical coatings as the end reflectors of laser cavities and/or in the mirror structures used in other optical resonators, such as fabry-perot tunable filters, along with the use of such fabry-perot tunable filters in wavelength swept sources such as lasers. Hybrid metal-dielectric optical coatings have reflectivity spectra that can be broader than pure dielectric coatings, offer optical reflectivities higher than metal, as high as pure dielectric coatings, eliminate mirror transmission that can cause parasitic light reflections, and use fewer layers and thus have lower mass and higher mechanical resonant frequency for movable mirror applications an important characteristic of these coatings concerns the non-reflected light.
Axsun Technologies, Inc.
Process for optical coherence tomography and optical coherence tomography
In a process for optical coherence tomography a plurality of first oct slice images, in each first slice image representing a different slice of an object, are recorded. Subsequently a reference figure that is representative of the three-dimensional contour of at least one structural feature of the object in a given three-dimensional coordinate system is ascertained by feature recognition of the at least one structural feature in the first slice images.
Thermostabilization of antenna array for magnetic resonance tomography
A device for thermal stabilization of a first electrical characteristic of an antenna array of a magnetic resonance tomograph includes a heat exchanger configured for thermal coupling of a component of the device to a heat source. The device also includes a temperature-dependent second electrical characteristic.
Method and cryogen-free concentration of a hyperpolarized gas in a continuously flowing stream of gas, and use
The present disclosure refers to a method and an apparatus for cryogen-free concentration of a hyperpolarized noble gas in a continuously flowing stream of gas. The method comprises the following steps: providing a mixture of gases containing hyperpolarized noble gas and at least one process gas; passing the prepared gas mixture as a continuously flowing stream of gas through a gas separation device with a semipermeable membrane in order to separate the gases; and concentrating the hyperpolarized noble gas in the gas separation device, in which at least part of the at least one process gas or the hyperpolarized noble gas is separated from the continuously flowing stream of gas by means of the semipermeable membrane.
Bundesrepublik Deutschland, Vertreten Durch Das Bundesministerium Für Wirtschaft Und Arbeit, Diese
Control method and control system
A control method is disclosed for determining a quality indicator of medical technology recording results data from a tomography scan of an examination structure, which scan is supported by a contrast agent, by way of a tomography system. According to an embodiment of the invention, at least one control parameter value is automatically derived from the recording results data in respect of a contrast agent image region during and/or directly after the tomography scan, which value represents a quality of the recording results data in the contrast agent image region.
Method for predicting changes in properties of a formation in a near-wellbore area exposed to a drilling mud
In order to predict properties of a formation in a near-wellbore area exposed to a drilling mud rheological properties of the drilling mud, of a filtrate of the drilling mud and of a reservoir fluid are determined. Properties of an external mudcake, porosity and permeability of the core sample are determined.
Schlumberger Technology Corporation
System for providing an electrical activity map
The invention relates to a system for providing an electrical cardiac activity map by means of electrical signals acquired by a plurality of surface electrodes on an outer surface of a living being (6). A cardiac structure position determination unit (12) determines a position of a cardiac structure, in particular, of the epicardial surface, based on provided projection images, wherein an anatomical cardiac model is adapted to the projection images.
Koninklijke Philips N.v.
Method of designing and fabricating patient-specific restorations from intra-oral scanning of a digital impression coping
Taking a digital implant or abutment level digital impression by means of intra-oral, computed tomography or other imaging method provides the restorative doctor and laboratory accurate and effective data for determining the implant position, angulation and locking feature orientation without a physical impression. Such data is correlated with a digital library to produce an output which enables design and fabrication of an accurate restorative device such as a prosthetic tooth or crown.
James R. Glidewell Dental Ceramics, Inc.
Measuring intramuscular fat
Dual-energy absorptiometry is used to estimate intramuscular adipose tissue metrics and display results, preferably as related to normative data. The process involves deriving x-ray measurements for respective pixel positions related to a two-dimensional projection image of a body slice containing intramuscular adipose tissue as well as subcutaneous adipose tissue, at least some of the measurements being dual-energy x-ray measurements, processing the measurements to derive estimates of metrics related to the intramuscular adipose tissue in the slice, and using the resulting estimates.
Method, apparatus and system for localizing a spine
A method and a corresponding apparatus and system localizes a spine in an image, in particular a computed tomography (ct) image, of a human or animal body, allowing for a reduced need for computational power and/or memory on the one hand and assuring a reliable localization of the spine on the other hand. The method includes a) acquiring a plurality of slice images of at least a part of a human or animal body, and b) automatically selecting slice images and/or parts of slice images from the acquired plurality of slice images by considering at least one parameter (μz, νz, σz, Λz) characterizing a distribution of bones in the acquired slice images, wherein the selected slice images and/or parts of the slice images includes image information about the spine..
Imp Forschunginstitut FÜr Molekulare Pathologie Gmbh
High density forward projector for spatial resolution improvement for medical imaging systems including computed tomography
A medical imaging apparatus, processing device or specialized circuit can include an input interface to input scan data of a medical image scan of a target object, a processor to generate an output image from the input scan data, and an output interface to output the output image to, e.g., a display. The processor can execute a first reconstruction of the scan data to obtain an intermediate image of the target object, a high-density forward projection of the intermediate object to obtain generated data, a sinogram updating using both of the generated data and the scan data to obtain a high-resolution sinogram, and a second reconstruction based on the high-resolution sinogram to obtain an output image..
Kabushiki Kaisha Toshiba
Computed tomography apparatus, and generating image by using computed tomography apparatus
A computed tomography apparatus includes an x-ray irradiation unit irradiating an x-ray to an object while rotating along a predetermined rotation path, a detector acquiring projection data by detecting an x-ray transmitted through the object, a filter unit located between the x-ray irradiation unit and the object and comprising a plurality of transmissive areas and a plurality of slightly transmissive areas that are arranged in a predetermined direction, and a control unit controlling a motion of the filter unit to allow a relative position of the plurality of transmissive areas with respect to the x-ray irradiation unit and a relative position of the plurality of slightly transmissive areas with respect to the x-ray irradiation unit to change while the x-ray irradiation unit rotates.. .
Samsung Electronics Co., Ltd.
Reconstruction with partially known attenuation information in time of flight positron emission tomography
Reconstruction in positron emission tomography is performed with partially known attenuation. A pet-ct scanner is used to generate a pet image with time of flight emission information.
Siemens Medical Solutions Usa, Inc.
Fib-sem array tomography
Methods and devices for magnified imaging of three-dimensional samples are disclosed. The methods include imaging sample sections of a sample section series using a first particle-optical device.
Graphics processing unit management system for computed tomography
A method and apparatus for managing operation of graphics processing units in a computer system. A processing thread in the computer system controls processing of a set of sinogram data by a graphics processing unit to form a set of graphics data.
Methods for performing invasive medical procedures using a surgical robot
Embodiments are directed to a medical robot system including a robot coupled to an end-effectuator element with the robot configured to control movement and positioning of the end-effectuator in relation to the patient. One embodiment is a method for removing bone with a robot system comprising: taking a two-dimensional slice through a computed tomography scan volume of target anatomy; placing a perimeter on a pathway to the target anatomy; and controlling a drill assembly with the robot system to remove bone along the pathway in the intersection of the perimeter and the two-dimensional slice..
Globus Medical, Inc.
Procedural optical coherence tomography (oct) for surgery and related systems and methods
Methods for performing a surgical procedure using optical coherence tomography (oct) are provided. The method includes orienting the subject for the surgical procedure, wherein orienting comprises imaging a region of the subject that contains a structure having a known orientational asymmetry, testing the image for the presence and location of the structure, and confirming correct orientation of the subject using the oct image of the structure having the known orientational asymmetry; obtaining at least one image of the surgical region of the subject using oct and constructing an initial structural view of the surgical region; computing at least one clinical parameter relevant as an end point for assessing the outcome of the surgical procedure using data derived from the oct image; periodically assessing a surgical process and monitoring clinical outcomes related to the surgical procedure using changes to the oct-derived structural view of the surgical region oct or the changes to the computed clinical parameters derived from the at least an oct image; determining if a surgical plan for the surgical procedure needs modification based on the periodic assessment and/or monitoring; modifying the surgical plan for the surgical procedure if it is determined modification is needed; and repeatedly assessing and monitoring, determining and modifying until it is determined that modification is not needed..
Compounds for use in imaging, diagnosing and/or treatment of diseases of the central nervous system or of tumors
This invention relates to novel compounds suitable for labelling or already labelled by 18f, methods of preparing such a compound, 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).. .
Piramal Imaging Sa
Two-channel magnetic resonance imaging
A two-channel magnetic resonance tomography system is provided with a regulation circuit for an amplification system in order to be able to take into account different load situations of the mri system in a flexible and efficient manner. It is thus possible to improve the mri measurements greatly if the mri system is set to the respective load situation beforehand by an idle state measurement.
Ultrasound waveform tomography with wave-energy-based preconditioning
Synthetic-aperture ultrasound tomography systems and methods using scanning arrays and algorithms configured to simultaneously acquire ultrasound transmission and reflection data, and process the data using ultrasound waveform tomography with a wave-energy-based preconditioning method for improved ultrasound tomography imaging.. .
Los Alamos National Security, Llc
Method for displaying image data of body regions of a patient, the body regions being prone to dementia, and a medical imaging system which is designed to carry out the method
A method is disclosed for displaying image data of body regions of a patient using a medical imaging system including a first imaging apparatus and a positron emission tomography apparatus, the body regions being prone to dementia. The method includes provision of first image data recorded using the first imaging apparatus; provision of second image data recorded using the positron emission tomography apparatus, the first image data and the second image data being recorded simultaneously or at short intervals of time consecutively; segmentation of the first image data in respect of body regions prone to dementia, a segmentation mask being generated to this end on the basis of the first image data; generation of results data, the results data including a selection of voxels in the second image data made using the segmentation mask; and display of the results data..
Method for evaluation and comparison of a chronological sequence of combined medical imaging examinations and also a medical imaging system which is designed for executing the inventive method
A method is disclosed for evaluating and comparing a chronological sequence of at least two combined medical imaging examinations, wherein a combined medical imaging examination is carried out in each case by way of a first imaging apparatus and by way of a second imaging apparatus which is formed by a positron emission tomography apparatus. On the basis of the image data captured by the first imaging apparatus, a transformation specification is created and this is applied to the image data captured by the positron emission tomography apparatus, so that a direct comparison of the first and second image data captured by way of the positron emission technology apparatus is made possible..
Methods and systems for axially segmenting positron emission tomography data
A method for generating a positron emission tomography (pet) image includes defining a scan window having a predetermined length along an examination axis of a pet imaging system, the scan window corresponding to a region of interest to be continuously scanned by the pet imaging system, defining at least two data bins corresponding to two separate scan regions within the scan window, defining a transition region that overlaps a portion of each of the separate scan regions within the scan window, the transition region having a width that is shorter than a length of the scan window, binning emission data acquired within the transition region into the two data bins, binning emission data acquired from outside the transition region into one of the two data bins, and reconstructing an image using the emission data in the two data bins.. .
General Electric Company
Magnetic resonance imaging method and apparatus
A magnetic resonance (mr) tomography aparatus has an array composed of a number n of single coils ei to acquire reception signals ii. The tomography apparatus is operated by a method that includes the following steps.
Systems and methods for determining retinal ganglion cell populations and associated treatments
A new combined index of structure and function (csfi) for staging and detecting glaucomatous damage is provided. An observational study including 333 glaucomatous eyes (295 with perimetric glaucoma and 38 with preperimetric glaucoma) and 330 eyes of healthy subjects is described.
The Regents Of The University Of California
Systems and methods for integration of a positron emission tomography (pet) detector with a computed-tomography (ct) gantry
Systems and methods for integration of a pet detector with a ct gantry are provided. One system includes an x-ray computed tomography (ct) gantry having a rotating portion and a stationary portion within a housing, and including a bore volume therethrough.
General Electric Company
Stabilisation of radiopharmaceutical precursors
The present invention relates to a method for improving stability of non fluoridated sugar derivatives, and in particular glucose derivatives such as 1,3,4,6-tetra-o-acetyl-2-o-trifluoromethanesulfonyl-β-d-mannopyranose which are used as precursors for production of radiofluoridated sugar derivatives for use in in vivo imaging procedures such as positron emission tomography (pet). The method comprises storing the non fluoridated sugar derivative in an organic solvent.
Ge Healthcare Limited
Computed tomography system including rotatable collimator
Disclosed is a computed tomography (ct) system which includes a rotatable collimator. The ct system includes a gantry.
Industry-academic Cooperation Foundation, Yonsei University
Directional optical coherence tomography systems and methods
An optical coherence tomography system that includes an optical device having an adjustable optical element configured to displace a pupil entry point of light is provided. Optical coherence tomography methods using the optical coherence tomography system are also provided.
The Medical College Of Wisconsin, Inc.
Optical coherence tomography with dynamic focus sweeping and windowed averaging
During scan capture with an oct imaging system, the focal plane position can be simultaneously shifted over at least a portion of an image range. As a result, a plurality of image frames respectively corresponding to various focal plane positions is acquired.
Kabushiki Kaisha Topcon
Method and system for synchronizing positron emission tomography (pet) detector modules
A detector module (50) for a positron emission tomography (pet) system (10) includes an optical transceiver (66) receiving an optical data stream from a pet processing system (48). The data stream includes a pulse train carrying a command to generate sync/reset pulses.
Koninklijke Philips N.v