46 results about "Imaging chain" patented technology

Techniques are provided for generating three-dimensional images, such as may be used in mammography. In accordance with these techniques, projection images of an object of interest are acquired from different locations, such as by moving an X-ray source along an arbitrary imaging trajectory between emissions or by individually activating different X-ray sources located at different locations relative to the object of interest. The projection images may be reconstructed to generate a three-dimensional dataset representative of the object from which one or more volumes may be selected for visualization and display. Additional processing steps may occur throughout the image chain, such as for pre-processing the projection images or post-processing the three-dimensional dataset.

A method of creating and displaying images resulting from digital tomosynthesis performed on a subject using a flat panel detector is disclosed. The method includes the step of acquiring a series of x-ray images of the subject, where each x-ray image is acquired at different angles relative to the subject. The method also includes the steps of applying a first set of corrective measures to the series of images, reconstructing the series of images into a series of slices through the subject, and applying a second set of corrective measures to the slices. The method further includes the step of displaying the images or slices according to at least one of a plurality of display options.

A CT detector includes a first detector configured to convert radiographic energy to electrical signals representative of energy sensitive radiographic data and a second detector configured to convert radiographic energy to electrical signals representative of energy sensitive radiographic data and positioned to receive x-rays that pass through the first detector. A logic controller is electrically connected to the first detector and the second detector and is configured to receive a logic output signal from the second detector indicative of an amount of a saturation level of the first detector, compare the logic output signal to a threshold value, and output, based on the comparison, electrical signals from the first detector, the second detector, or a combination thereof to an image chain.

The invention discloses a correcting method of X-ray digital imaging in the digital imaging technological domain, which comprises the following steps: utilizing mathematical model to correct shift of digital flat according to physics analysis of imaging chain; correcting spatial unevenness and broken points to obtain stable, entire and correct digital image of X-ray information; fitting for reserving and expressing image. The invention can correct systemic defect of direct digital intrinsic imaging system through predisposal system, which improves imaging effect.

A method of creating and displaying images resulting from digital tomosynthesis performed on a subject using a flat panel detector is disclosed. The method includes the step of acquiring a series of x-ray images of the subject, where each x-ray image is acquired at different angles relative to the subject. The method also includes the steps of applying a first set of corrective measures to the series of images, reconstructing the series of images into a series of slices through the subject, and applying a second set of corrective measures to the slices. The method further includes the step of displaying the images or slices according to at least one of a plurality of display options.

A method to process images for interventional imaging, wherein a 3D image of an object is visualized with a medical imaging system, the medical imaging system comprising an X-ray source and a detector, is provided. The method comprises acquiring a plurality of 2D-projected images of the object along a plurality of orientations of the imaging chain, wherein a rectilinear instrument has been inserted into the object. The method also comprises determining a 3D reconstruction of the instrument such that a plurality of 2D projections of the 3D image of the instrument, along the respective orientations in the 2D-projected images of the object were acquired, are closest to the acquired 2D-projected images of the object. The method further comprises superimposing the 3D reconstruction of the instrument over the 3D image of the object so as to obtain a 3D image comprising the object and the instrument.

The present invention relates to the field of medical imaging. More particularly, embodiments of the invention relate to methods, systems, and devices for imaging, including for tomography-based applications. Embodiments of the invention include, for example, a computed tomography based imaging system comprising: (a) at least one wide-beam gray-scale imaging chain capable of performing a global scan of an object and acquiring projection data relating to the object; (b) at least one narrow-beam true-color imaging chain capable of performing a spectral interior scan of a region of interest (ROI) of and acquiring projection data relating to the object; (c) a processing module operably configured for: (1) receiving the projection data; (2) reconstructing the ROI into an image by analyzing the data with a color interior tomography algorithm, aided by an individualized gray-scale reconstruction of an entire field of view (FOV), including the ROI; and (d) a processor for executing the processing module. The extended interior methods and systems for spectral, optical, and photoacoustic imaging presented in this application can lead to better medical diagnoses by providing images with higher resolution or quality, and can lead to safer procedures by providing systems capable of reducing a patient's exposure time to, and thus quantity of, potentially harmful x-rays. Embodiments of the invention also provide tools for real-time tomography-based analyses.

A method to process images for interventional imaging, wherein a 3D image of an object is visualized with a medical imaging system, the medical imaging system comprising an X-ray source and a detector, is provided. The method comprises acquiring a plurality of 2D-projected images of the object along a plurality of orientations of the imaging chain, wherein a rectilinear instrument has been inserted into the object. The method also comprises determining a 3D reconstruction of the instrument such that a plurality of 2D projections of the 3D image of the instrument, along the respective orientations in the 2D-projected images of the object were acquired, are closest to the acquired 2D-projected images of the object. The method further comprises superimposing the 3D reconstruction of the instrument over the 3D image of the object so as to obtain a 3D image comprising the object and the instrument.

The present invention is an x-ray arrangement for examining patients, having an x-ray source and a digital flat panel detector characterized by a processing unit with a converter with an input possibility for a whole data record of system parameters as input parameters which can be easily adjusted and input by the user for conversion into a whole data record of image chain parameters as output parameters.

The invention discloses a multi-stage energy type static security CT system and an imaging method. The static security CT system comprises at least one group of N-level image chain structures; baggageconveyer belts are arranged on the inner sides of the bottoms of the N-level image chain structures; the N-level image chain structures and the baggage conveyors belt are fixed on preset positions ofthe static security CT system through frames; the N-level image chain structures are sequentially arranged in the forward direction of a baggage passage; and the adjacent groups of N-level image chain structures are misaligned. The static security CT system can generate images with higher time resolution and more spectrum levels than spiral CT through the exposure of different time series ray sources in the N-level image chain structures, thereby improving the recognition rate of contrabands in baggage and the baggage inspection speed. On the other hand, the static security CT system is freefrom dependence on slip rings, and a multifocal X-ray source and a detector do not need to rotation, so that non-rotational static imaging is realized.

Certain embodiments of the present invention provide a method for performing diagnostics in a medical imaging system during the normal operating mode of the imaging system including firing a diagnostic vector with a probe, collecting signal data based at least in part on the diagnostic vector, and processing the signal data to determine a diagnostic status. The diagnostic status indicates an operating condition of at least one component of the medical imaging system.

A method is provided for creating an image chain, the method including identifying image processing functions required by the image chain, replacing each image processing function by a corresponding neural network, determining a sequence of execution of instances of the neural networks for the image chain, and applying backpropagation through the neural networks of the image chain.