Patent application number | Description | Published |
20100061522 | METHOD TO CORRECT IMAGING ERRORS OF AN X-RAY IMAGE INTENSIFIER SYSTEM AND ASSOCIATED X-RAY IMAGE INTENSIFIER SYSTEM - An image intensifier system has an image converter tube to convert incident x-ray radiation into visible light and a digital camera system optically downstream of the image converter tube. The camera system has an image sensor to convert the incident, visible light into digital images, and an electronic image processing unit is provided for post-processing of the digital images. In such a system and a method for correcting image distortion errors that occur therein, characteristic data of a magnetic field present in the image converter tube are determined with the aid of a magnetic field probe arranged within the image converter tube or in its environment, an imaging error resulting from the presence of the magnetic field is quantitatively defined using the determined characteristic data, one or more parameters of a correction map leading to the correction of the imaging error are determined based on this, and the correction map that is established in this way is applied to the digital images in the electronic image processing unit. | 03-11-2010 |
20100292559 | RADAR-EQUIPPED PATIENT BED FOR A MEDICAL IMAGING APPARATUS, AND OPERATING METHOD THEREFOR - A patient bed for an imaging medical apparatus has a patient support plate that has at least one radar antenna to obtain physiological and/or geometric data from a patient the patient support plate. In a method for the operation of such a patient bed having at least one radar antenna in an imaging medical apparatus, the at least one radar antenna is operated to obtain data from the patient on the patient support plate. | 11-18-2010 |
20110257508 | Device For Supporting, Scanning, Tomographically Displaying A Patient And Carrying Out An Intervention And Method For Determining The Spatial Relation Between Optical Recordings And Tomographic Displays - A device is disclosed for supporting, scanning, tomographically displaying a patient and carrying out an intervention. In at least one embodiment, for the device includes a computer system to: calculate the spatial position of at least one intervention channel in spatial relation to the patient couch and/or to the patient on the basis of previously obtained positional information on the at least one tomographic display of the patient; output the respectively current optical recordings of the patient on the patient couch online; and superpose the current optical recordings of the patient with a spatially adapted display of the intervention channel and/or intervention target point and/or an intervention instrument directed at the intervention channel. Moreover, a method is disclosed for determining the spatial relation between optical recordings and tomographic displays, with the aid of an adjustment phantom with at least three points in space that can be identified visually and at least three points in space that can be identified by the tomographic recording system, the mutual relative spatial positions of which are known. | 10-20-2011 |
20120220863 | IMAGING MEDICAL APPARATUS WITH A DEVICE TO IDENTIFY A PLANE IN SPACE - An imaging medical apparatus has at least one device to identify a plane in space. The device has: a light source that emits a fan-shaped light beam, the light source is rotatable around a light source rotation axis. The device also has a mirror that reflects the fan-shaped light beam, the mirror being rotatable around a mirror rotation axis and encompassing a mirror plane. The mirror rotation axis and the surface normal of the mirror plane enclose an angle greater than 0° and less than 90°. | 08-30-2012 |
20120326049 | QUANTUM-COUNTING RADIATION DETECTOR - A quantum-counting radiation detector is disclosed, in particular an x-ray detector. In at least one embodiment, the signals of the individual pixels and the signals of combined pixels are evaluated in parallel processing branches. It is then possible to combine the count results in an appropriate manner, to reduce the influence of unwanted interference effects for the respective application. | 12-27-2012 |
20130188782 | OPTICAL ADJUSTMENT DEVICE - An optical adjustment device has a laser unit with at least one laser radiation source as well as an adjustment phantom which is arranged relative to the laser unit such that laser radiation emitted by the laser unit strikes the adjustment phantom. A fluorescent medium) is applied on the adjustment phantom, the fluorescent medium being designed to emit light of a different wavelength from the laser radiation upon being struck by laser radiation. This light is detected by a photodetector that is at a location spatially separated from the adjustment phantom, such as at the laser unit. | 07-25-2013 |
20130214144 | METHOD FOR HOMOGENIZATION OF THE THRESHOLD VALUES OF A MULTI-CHANNEL, QUANTA-COUNTING RADIATION DETECTOR - A method is disclosed for homogenization of threshold values of a multichannel, quanta-counting radiation detector. In an embodiment of the method empty measurements are carried out with the detector at different spectral compositions of the radiation with different settings of threshold values of the comparators. For each channel of which the comparators is to be set to the same energy threshold, an adapted threshold value is determined for this energy threshold from the empty measurement, at which a variation of the normalized count rate of the channel is minimized over the different spectral compositions of the radiation. This avoids problems in the further processing of the measurement data of the detector, which can occur during alterations of the spectrum. | 08-22-2013 |
20130248729 | X-Ray Detector With Photon-Counting Directly Converting Detector Elements And Method For Temperature Stabilization Of The X-Ray Detector - An X-ray detector with photon-counting directly converting detector elements and a method for the temperature stabilization of at least one detector element of an X-ray detector of a CT system are disclosed, wherein the detector elements use a sensor material which converts incident photons of radiation directly into free-moving charge in the sensor material and wherein with the aid of a circuit arrangement (e.g. an ASIC), the number of incident photons in relation to predefined energy ranges (e.g., to imaging) is determined, wherein the total electrical power of at least one detector element is kept constant regardless of the incident intensity of radiation. | 09-26-2013 |