Class / Patent application number | Description | Number of patent applications / Date published |
378108000 | Dose regulated | 8 |
20080253532 | Dose Rate Control in an X-Ray System - A controller for controlling the dose rate (exposure kV tube voltage) of an X-ray system, in which the actual dose rate is measured and compared with an optimal dose rate, and the resultant difference value is fed to a module ( | 10-16-2008 |
20090041193 | DOSE REDUCED DIGITAL MEDICAL IMAGE SIMULATIONS - A method for providing a reduced exposure value for radiographic imaging obtains a set of flat-field images at two or more exposure values and measures the noise power spectra using the flat field images. At least one noise table is generated according to interpolated noise power spectra for a set of predetermined exposure values. Values from the at least one noise table are applied to a clinical image to form a reduced exposure simulation image. A noise mask is generated according to at least one noise table and the exposure values of the reduced exposure simulation image and added to the reduced exposure simulation image. The reduced exposure simulation image is assessed to generate a desired dose reduction factor. | 02-12-2009 |
20090046833 | X-RAY CT APPARATUS - [Problems] To provide an X-ray CT apparatus capable of easily comparing image quality supposed to be obtained when not using a X-ray dose optimization function and image quality supposed to be obtained when using the X-ray dose optimization function at the stage of scan planning.
| 02-19-2009 |
20120134475 | METHODS AND SYSTEMS FOR ADAPTIVELY CORRECTING EXPOSURE PARAMETERS DURING DIGITAL RADIOGRAPHIC IMAGING - Methods and systems for adaptively correcting exposure parameters during digital radiographic imaging are disclosed. | 05-31-2012 |
20120140893 | METHOD AND DEVICE TO DETERMINE THE VALUE OF AN X-RAY TUBE VOLTAGE - The value of a tube voltage of an x-ray tube, used to acquire x-ray projections of a patient in order to generate at least one image in each phase of a multiphase examination, is determined from a contrast-to-noise ratio that establishes the desired image quality of the image in each phase, and the tube current for each tube voltage for each phase is determined given a constantly maintained contrast-to-noise ratio for different tube voltages. For each phase, a value for the dose of x-ray radiation is defined for each different tube voltage and the associated determined tube current. From among the different tube voltages, a tube voltage is set that causes the total dose of x-ray radiation applied to the patient to be as low as possible for all phases of the examination. | 06-07-2012 |
20120236995 | Automated Imaging Contrast Agent Determination System - A system automatically adaptively determines contrast agent administration parameters for use in a CT scan imaging system. The system includes a repository, input processor, imaging processor and output processor. The repository includes predetermined information associating, a contrast agent type, contrast agent administration parameters, an imaging system X-ray tube voltage and at least one of, (a) a type of imaging procedure and (b) an anatomical region to be imaged. The input processor receives data identifying a type of imaging procedure or an anatomical region to be imaged. The imaging processor uses the information in automatically identifying contrast agent parameters and X-ray tube voltage in response to the received data. The output processor provides output data to a destination device indicating contrast agent parameters for use in administering contrast agent to a patient. | 09-20-2012 |
20150016591 | X-Ray Imaging System With Cabling Precharging Module - An X-ray imaging system can include an X-ray tube, an X-ray generator, a precharging module and a triaxial cable. The X-ray tube can be configured to generate an X-ray emission and include an anode, a cathode and a filament. The X-ray generator can be coupled with the X-ray tube and include a high voltage module and a low voltage module. The high voltage module can be being configured to supply a dosing voltage across the X-ray tube and the low voltage module can be configured to supply a dosing current to the filament. The precharging module can be configured to supply a precharge voltage. The triaxial cable can electrically connect the X-ray generator to the X-ray tube. The outer shield conductor of the triaxial cable can carry a ground voltage, the inner shield conductor can carry the precharge voltage and the center conductor can carry the dosing voltage. | 01-15-2015 |
20160120496 | X-RAY COMPUTED TOMOGRAPHY APPARATUS - An X-ray computed tomography apparatus according to the present embodiment comprises a gantry and a tube current setting circuitry. The tube current setting circuitry set tube currents for the respective imaging regions. To be specific, the tube current setting circuitry calculate X-ray absorption index values in the respective imaging regions, based on scanogram image data, determine tube current values corresponding to the X-ray absorption index values for the respective imaging regions, and correct the tube current values of the respective imaging regions except for a reference region based on a relative relationship between an X-ray absorption index value of the reference imaging region and tube current values of the other imaging regions. | 05-05-2016 |