|| List of recent Tomograph-related patents
| Compensated crosswell tomography methods and systems|
A method and system to compensate for inaccuracies in crosswell tomography is presented. The method includes obtaining data from at least two receivers in response to transmissions from at least two transmitters.
| Method for estimating flow rates and pressure gradients in arterial networks 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 arterial stenosis in a selected portion of an arterial network. The method includes gathering patient-specific data related to concentration of a contrast agent within an arterial network using a coronary computed tomography angiography scan (ccta).
| Novel precursors of glutamate derivatives|
This invention relates to novel precursors suitable for 18f radiolabeling of glutamate derivatives, methods for preparing such compounds and its intermediates, compositions comprising such compounds, kits comprising such compounds or compositions and methods for 18f radiolabeling of glutamate derivatives wherein the obtained 18f radiolabeled glutamate derivatives are suitable for diagnostic imaging by positron emission tomography (pet) of proliferative diseases e.g. Tumor in mammals..
| Calibration and normalization systems and methods for radiopharmaceutical synthesizers|
The present invention relates to calibration and normalization systems and methods for ensuring the quality of radiopharmaceuticals during the synthesis thereof, such as radiopharmaceuticals used in positron emission tomography (pet) and single-photon emission computed tomography (spect).. .
| Methods and computer program products for quantitative three-dimensional image correction and clinical parameter computation in optical coherence tomography|
Methods and computer program products for quantitative three-dimensional (“3d”) image correction in optical coherence tomography. Using the methods and computer program products, index interface (refracting) surfaces from the raw optical coherence tomography (“oct”) dataset from an oct system can be segmented.
| Apparatus and method for capturing a vital vascular fingerprint|
A method using optical coherence tomography to capture the microvascular network of the superficial layer of the finger skin for the purpose of fingerprint authentication and liveness detection. At the dermal papilla region, the vascular pattern follows the same pattern of the fingerprint and this vascular pattern forms a live vascular fingerprint.
| Extremity imaging apparatus for cone beam computed tomography|
An apparatus for cone beam computed tomography of an extremity has a digital radiation detector and a first device to move the detector along a circular detector path extending so that the detector moves both at least partially around a first extremity of the patient and between the first extremity and a second, adjacent extremity. The detector path has radius r1 sufficient to position the extremity approximately centered in the detector path.
| Method for scattering correction for sparsely distributed stationary detectors and rotating x-ray source|
A spectral computed tomography scanner apparatus, including a rotating x-ray source, a plurality of fixed energy-discriminating detectors, a processor that generates a shadow map that indicates, for each detector/view angle, a shadow state of the detector, the shadow state indicating that one of x-rays are completely blocked by a second detector and do not reach the detector, the x-rays are partially blocked by the second detector and partially reach the detector, the x-rays are not blocked by any of the detectors and reach the detector, and the detector is not with the scan field of view at the view angle, and a controller configured to cause the scanner apparatus to perform a scan of an object over a first range of view angles to collect view data, wherein the processor is configured to perform scatter correction using the collected view data and the generated shadow map.. .
| Optical coherence tomographic imaging information acquisition apparatus|
An optical tomographic imaging information acquisition apparatus according to an sd-oct system including: at least two super luminescent diodes; a sensor and a spectrometer that are for acquiring information on a measurement target; a combiner section for the photoreceptor unit configured to combine emitted beams from the at least two super luminescent diodes (slds) and to guide the beams to the photoreceptor unit; a monitor unit configured to monitor a spectrum of the emitted beams from the at least two super luminescent diodes; a driving unit configured to drive the slds; and a control unit configured to feed back a monitored result by the monitor unit to the driving unit, the driving unit is further configured to drive only one of each of the at least two super luminescent diodes. With the apparatus, a spectral shape can be easily controlled to be unimodal..
| Method of motion correction in optical coherence tomography imaging|
An image data set acquired by an optical coherence tomography (oct) system is corrected for effects due to motion of the sample. A first set of a-scans is acquired within a time short enough to avoid any significant motion of the sample.
| Mr electrical properties tomography|
The invention relates to a method of mr imaging of an object (10) placed in an examination volume of a mr device (1). It is an object of the invention to enable improved electrical properties tomography.
| Radiation tomography apparatus|
The disclosure has one object to provide a radiation tomography apparatus of a low price that facilitates a design change of a detector ring to suppress costs of development. The radiation tomography apparatus according to the disclosure includes a plurality of modules configured to receive detected data from different radiation detectors.
|Computed tomography calibration systems and methods|
According to certain embodiments of the invention, computer hardware and software can perform single or dual-energy decomposition calculations and predict ct values for either single-energy or dual energy ct from basis material decomposition estimates derived using theoretical models. Using that information, the computer hardware and software can (among other things) present one dimensional information from a ct scanner, such as representative pixel value, in two dimensions, such as a line in two dimensional basis material space..
|Near-infrared super-continuum lasers for early detection of breast and other cancers|
A system and method for using near-infrared or short-wave infrared (swir) light sources for early detection and monitoring of breast cancer, as well as other kinds of cancers may detect decreases in lipid content and increases in collagen content, possibly with a shift in the collagen peak wavelengths and changes in spectral features associated with hemoglobin and water content as well. Wavelength ranges between 1000-1400 nm and 1600-1800 nm may permit relatively high penetration depths because they fall within local minima of water absorption, scattering loss decreases with increasing wavelength, and they have characteristic signatures corresponding to overtone and combination bands from chemical bonds of interest, such as hydrocarbons.
|Interfacing systems, devices, and methods for optical imaging|
An imaging interface for diffuse optical tomography of breast includes a plurality of concentric rings. Each concentric ring can include a plurality of optical input/output apertures arranged on a radially inner surface thereof.
|Methods and systems for imaging tissue motion using optical coherence tomography|
A system and method for measuring tissue motion within a living tissue of the anterior segment and aqueous outflow system of the eye in a subject are provided. Tissue movements are extracted from a plurality of images acquired from the living tissue using an optical coherence tomography system.
|Assisted guidance and navigation method in intraoral surgery|
An assisted guidance and navigation method in intraoral surgeries is a method using computerized tomography (ct) photography and an optical positioning system to track medical appliances, the method including: first providing an optical positioning treatment instrument and an optical positioning device; then obtaining image data of the intraoral tissue receiving treatment through ct photography, precisely displaying actions of the treatment instrument in the image data, and real-time checking an image and guidance and navigation. Therefore, during the surgery, the existing use habits of the physicians are not affected and accurate and convenient auxiliary information is provided, and attention is paid to using the treatment instrument in physical environments such as a patient's tooth or dental model..
|Diagnostic method and treatment|
Methods for detecting early stage fungal infection (and especially esca or esca-like infections) in woody plants are disclosed, using x-ray tomographic imaging. In preferred embodiments, axial x-ray tomography is employed, with radiodense regions of the tomograms indicating the location of such infection.
|Methods for analyzing absorbent articles|
A method for analyzing an absorbent article may include providing a three-dimensional computed tomography data set comprising a mannequin image and an article image. The article image may be constructed from projections collected while the absorbent article is fitted to a mannequin.
|Ophthalmologic image display apparatus, ophthalmologic image display method, program, and storage medium|
An ophthalmologic image display apparatus for displaying information about an eye includes an input unit configured to input a tomographic image of the eye, an acquisition unit configured to acquire diagnostic supporting information associated with positional information about the tomographic image of the eye, a processing unit configured to perform processing for assigning a voxel value to volume data constituting the tomographic image based on a reflection intensity value indicating the tomographic image and the diagnostic supporting information, and a display control unit configured to cause a display unit to display an image processed by the processing unit.. .
|Apparatus and method for angular response calibration of photon-counting detectors in sparse spectral computed tomography imaging|
A method for detector angular response calibration in computed-tomography (ct) comprising capturing incident x-ray photons, emitted from an x-ray source, via a plurality of energy-discriminating detectors, determining photon counts of the captured incident x-ray photons in a plurality of energy windows at each energy-discriminating detector, and adjusting the photon counts based on a pre-determined detector angular response calibration look-up table for a given view for each energy-discriminating detector at each energy window.. .
|Apparatus and method for count loss calibration of photon-counting detectors in spectral computed tomography imaging|
A method for photon count-loss calibration in a computed-tomography (ct) scanner, including capturing incident x-ray photons via a plurality of energy-discriminating detectors, determining photon counts of the captured incident x-ray photons in a plurality of energy windows at each energy-discriminating detector, and adjusting the determined photon counts in each energy window for each energy-discriminating detector based on a pre-determined photon count-loss look-up table and the determined photon counts.. .
|Multi energy x-ray microscope data acquisition and image reconstruction system and method|
A multi energy, such as dual-energy (“de”), x-ray imaging system data acquisition and image reconstruction system and method enables optimizing the image contrast of a sample. Using the de x-ray imaging system and its associated user interface applications, an operator performs a low energy (“le”) and high energy (“he”) x-ray scan of the same volume of interest of the sample.
|Computed tomography imaging process and system|
A computed tomography imaging process, including: acquiring projection images of an object by detecting radiation that has passed through the object for respective different relative orientations of the object and the radiation; and processing the projection images to generate a tomogram of the object; wherein the radiation passes through the object in the form of a diverging beam, and the different acquire set of projection images for a relative orientations of the object and the beam of radiation define two or more complete trajectories of the beam along the object, the complete trajectories being mutually offset to reduce the degradation of spatial resolution in portions of the generated tomogram due to the divergence of the beam through the object.. .
|Computerized movable laser system for radiographic patient positioning|
A system for radiographic patient positioning includes at least one laser. An orientation sensor is associated with a laser and the orientation sensor produces tilt data indicative of an orientation of a laser.
|Broadband or mid-infrared fiber light sources|
An optical system for use in an imaging procedure includes one or more semiconductor diodes configured to generate an input signal beam with a wavelength shorter than 2.5 microns that is amplified and communicated through optical fiber(s) to a nonlinear element configured to broaden the spectral width to at least 50 nm through a nonlinear effect. A subsystem includes lenses or mirrors to deliver an output beam having a broadened spectrum to an optical coherence tomography apparatus with a sample and reference arm to perform imaging for characterizing the sample.
|Modelling of tof-doi detector arrays|
The invention is directed to several crystal arrangements for time-of-flight (tof) positron emission tomography (pet) with depth of interaction (doi) encoding for high spatial, energy and timing resolution. Additionally, several implementations of the tof-doi pet detector arrays are proposed with related measurements which all show that no timing degradation is visible in the used setup for first photon trigger for digital silicon photo multipliers (dsipms)..
|Supplemental transmission information for attenuation correction in positron emission tomography imaging|
Supplemental transmission information is used in pet imaging with a hybrid pet/mr system. The magnetic field of the mr portion is used to direct positrons from one or more sources outside or inside the pet field of view to within the pet field of view.
|Method and device for correction of movement artifacts in a computed tomography image|
A method for correction of movement artifacts in a computed tomography image that is reconstructed from a plurality of computed tomography projection images is provided. Using all projection images of the plurality of computed tomography projection images, an average position of an examination area of an examination object in the reconstructed image volume is determined by a global optimization method.
|Method for simulating thoracic 4dct|
Four-dimensional (4d) computed tomography (ct) is simulated by first generating a surface mesh from a single thoracic ct scan. Tetrahedralization is applied to the surface mesh to obtain a first volume mesh.
|Large field of view grating interferometers for x-ray phase contrast imaging and ct at high energy|
A device and method of the present disclosure provides large field-of-view talbot-lau phase contrast ct systems up to very high x-ray energy. The device includes microperiodic gratings tilted at glancing incidence and tiled on a single substrate to provide the large field-of-view phase contrast ct system.