Patent application number | Description | Published |
20080232555 | DEVICE AND METHOD FOR MONITORING SOLID-STATE DETECTORS - In a device and associated method for monitoring solid-state detectors, image segments of a test image (such as, for example, a dark current image) from solid-state detectors are evaluated and further usability of the solid-state detector is indicated using assessment criteria. | 09-25-2008 |
20090127470 | FLAT PANEL DETECTOR WITH TEMPERATURE SENSOR - A flat panel detector for x-ray radiation has at least one radiation sensor and at least one temperature sensor. The radiation sensor is composed of a number of radiation sensor elements. The temperature sensor is of laminar design, and its surface is approximately equal in size to the surface of the radiation sensor. The temperature sensor can be formed by a number of temperature sensor elements. The current temperature of each pixel of the radiation sensor thus can be determined. | 05-21-2009 |
20110129062 | DEVICE AND METHOD FOR MAMMOGRAPHY - A compression unit of a mammography apparatus includes an arrangement to tension at least one compression band in a first fixing unit and second fixing unit arranged on both sides of a subject table. | 06-02-2011 |
20120008739 | MAMMOGRAPHY APPARATUS WITH X-RAY SOURCES ARRANGED AT DIFFERENT DISTANCES FROM THE CHEST - A mammography apparatus has at least one x-ray source to emit x-ray radiation and an x-ray detector with a number of pixels. The mammography apparatus is designed so that the x-ray radiation is emitted into the breast tissue of a patient at a number of positions, and the x-ray radiation is detected by the x-ray detector after it has passed through the breast tissue. The positions have different distances from the shoulder-to-shoulder axis of the patient. | 01-12-2012 |
20120069959 | MAMMOGRAPHY APPARATUS - A mammography apparatus has a bed unit on which, during a screening, the patient lies ventrally on a recumbent surface of the bed unit. The recumbent surface has a configuration allowing variable individual parts of the bed unit to be positioned so that the bed position of the patient is optimized and the components of the x-ray unit that are arranged below the bed unit can be positioned and aligned relative to one another such that the base of the breast to be x-rayed is also imaged. | 03-22-2012 |
20120134464 | METHOD TO SHOW A CONCENTRATION OF A CONTRAST AGENT IN A PREDETERMINED VOLUME SEGMENT BY MEANS OF TOMOSYNTHESIS, AND CORRESPONDING TOMOSYNTHESIS APPARATUS - In an imaging method and a tomosynthesis apparatus, a two-dimensional low-energy image of the predetermined volume segment is obtained after administration of a contrast agent, followed by a two-dimensional high-energy image and then a high-energy tomosynthesis of the predetermined volume segment is obtained with a high total radiation dose that is significantly higher than the low radiation dose. The two-dimensional low-energy image is subtracted from the two-dimensional high-energy image to generate a result with which the concentration of the contrast agent is visible. Additionally, in a time interval in which an enrichment or a washing-out of the contrast agent occurs within the predetermined volume segment, a tomosynthesis of the predetermined volume segment is automatically implemented to show the concentration of the contrast agent in the predetermined volume segment. | 05-31-2012 |
20120224668 | METHOD AND X-RAY SYSTEM TO CREATE A DUAL ENERGY X-RAY IMAGE - In a method to create dual energy x-ray image data of a predetermined volume segment of an examination subject with an x-ray system, a low-energy x-ray image data of the volume segment is created, a high-energy x-ray image data of the volume segment is created, the low-energy x-ray image data is subtracted from the high-energy x-ray image data to create the dual energy x-ray image data. An x-ray filter that consists essentially of titanium is used in the creation of the dual energy x-ray image data. | 09-06-2012 |
20120253187 | MAMMOGRAPHY INSTALLATION - A mammography installation or a mammography system allows x-ray projections of the breasts for at least one | 10-04-2012 |
20130136331 | METHOD AND APPARATUS TO DETERMINE ACQUISITION PARAMETERS IN DUAL-ENERGY TOMOSYNTHESIS - In a control method and a control unit to control a high-energy, tomosynthesis scan in a contrast agent-assisted dual-energy tomosynthesis, image data of a first tomosynthesis scan are evaluated in order to determine the respective greyscale values for all volume segments. A tube current-time product value for every greyscale value is stored in a memory. For every projection angle, a calculation unit can thereupon calculate a tube current-time product value and acquisition parameters and result with which the second high-energy tomosynthesis scan is controlled. | 05-30-2013 |
20140050295 | METHOD AND X-RAY DEVICE TO DETERMINE A THREE-DIMENSIONAL TARGET IMAGE DATA SET - In a method and x-ray device to determine a three-dimensional target image data set showing at least one partial region of interest of an acquisition region, wherein the image data of the three-dimensional target image data set are reconstructed from two-dimensional projection images acquired from various projection directions, first projection images are acquired without a collimation of the radiation source from first projection directions and a three-dimensional overview image data set of the acquisition region is reconstructed from the first projection images. The partial region of interest is selected in the overview image data set. Second projection images are acquired, with collimation at the partial region, from second projection directions, the second projection directions differing from the first projection directions. The target image data set showing the acquisition region and the partial region of interest is reconstructed from all first and second projection images. | 02-20-2014 |
20140050302 | METHOD FOR THE DETERMINATION OF DUAL ENERGY IMAGE DATA RECORDS AND X-RAY FACILITY - A method for determining at least one three-dimensional image data record to be displayed of a target area from two sets of projection images recorded with x-ray spectra using different energy maxima. The method includes recording the first projection image via a first X-ray spectrum and different first projection directions and of the second projection image via the second X-ray spectrum and different second projection directions. The second projection directions differ at least partially from the first projection directions. A three-dimensional anatomy image data record is reconstructed from the first and the second projection images. A three-dimensional spectral image data record is reconstructed by a weighted combination of a first three-dimensional reconstruction image data record, reconstructed from the first projection images, and a second three-dimensional reconstruction image data record is reconstructed from the second projection images. The anatomy image data record and the spectral image data record are displayed. | 02-20-2014 |
20140072096 | CONTRAST-ENHANCED IMAGING OF OBJECTS - A contrast-enhanced imaging of an object is performed by an imaging device having a movable radiation source. A first projection image sequence of the object along a first trajectory over which the radiation source moves is recorded by radiation having a first energy spectrum. Subsequently, a second projection image sequence of the object along a second trajectory over which the radiation source moves is recorded by radiation having a second energy spectrum. A reconstruction of a three-dimensional subtraction image in relation to the different energy spectra is carried out by the first and second projection image sequence. In addition, a two-dimensional subtraction image in relation to the different energy spectra is reconstructed with the aid of the first and second projection image sequence. In this way, apart from a three-dimensional subtraction image, a two-dimensional subtraction image is also provided for better analysis of object characteristics. | 03-13-2014 |
20140376691 | MAMMOGRAPHY METHOD AND APPARATUS TO GENERATE AN X-RAY TOMOSYNTHESIS IMAGE OF A BREAST OF A PATIENT - In a mammography method and apparatus to generate a tomosynthetic x-ray image of a breast of a patient, two tomosynthesis scans are implemented in chronological succession with x-ray energies that differ from one another. In one of the two tomosynthesis scans a synthetic projection image is generated from at least two projection images acquired in this tomosynthesis scan, this synthetic projection image corresponding to a projection at a projection angle at which a projection image has been acquired in the other tomosynthesis scan. A difference image that is used to reconstruct the tomosynthesis x-ray image is generated from this synthetic projection image and the projection image acquired in the other tomosynthesis scan. Alternatively, in each tomosynthesis scan a respective synthetic projection image is generated from at least two respective projection images acquired in that tomosynthesis scan. Each synthetic projection image represents a projection at the same projection angle. A difference image that is used to reconstruct the tomosynthesis x-ray image is generated from these two synthetic projection images. | 12-25-2014 |