|
Match
|
Document |
Document Title |
|
|
8036340 |
X-ray apparatus
An X-ray apparatus includes a converter into which there is integrated a control logic circuit configured to regulate the supply voltage of a high-voltage power supply source of the X-ray...
|
|
|
7894570 |
Automatic dose adaptation as a function of patient body mass index in CT calcium scoring
A weight (22) and height (24) of a patient who is to undergo a calcium screening examination in an x-ray diagnostic scanner (10) is used to calculate an appropriate x-ray dose in terms of tube...
|
|
|
7778381 |
X-ray CT apparatus
The present invention provides an X-ray CT apparatus capable of obtaining each tomographic image indicative of X-ray tube voltage dependent information of a subject with the optimum image quality...
|
|
|
7734006 |
X-ray CT apparatus
In the X-ray CT apparatus of the present invention, the setting device sets X-ray irradiation condition candidate by at least one combination of a tube current and tube voltage for power to be...
|
|
|
7639776 |
X-ray CT apparatus
The present invention aims to obtain a tomographic image similar in image quality to a tomographic image obtained by executing a scan at X-ray tube current value set by an X-ray automatic exposure...
|
|
|
7636416 |
X-ray CT apparatus comprising a tube current control unit
An X-ray CT apparatus includes a projection data analysis part that reconstructs a tomographic image at an imaging portion of the object used for analysis from the projection data and produces a...
|
|
|
7620142 |
Method and apparatus for reducing x-ray dosage in CT imaging prescription
The present invention is directed to a networked scanner environment wherein each scanner is communicatable with one or more databases configured to store data associated with previously executed...
|
|
|
7587027 |
Method and apparatus for determining and displaying x-ray radiation by a radiographic device
Methods for determining and displaying x-ray radiation generated by a radiographic device may include storing in a memory a plurality of tables that correlate voltage and current values of an x-ray...
|
|
|
7400708 |
X-ray generator and X-ray CT apparatus comprising same
In an X-ray generating device of the neutral grounding system, to remove an unbalance voltage generated due to difference in impedance of parallel transformer coils of the high voltage transformer...
|
|
|
7391849 |
Energy monitoring target for x-ray dose-rate control
A target structure for an electron linear accelerator converts energy in an electron beam to x-rays and provides for the monitoring and control of the effective energy of the electron beam by...
|
|
|
7313224 |
Wireless integrated automatic exposure control module
Systems and methods for providing independent exposure detection, X-ray spectrum and timing compensation, and providing an exposure termination signal to an X-ray system. The system incorporates an...
|
|
|
7298826 |
X-ray generator
An X-ray generator of this invention has an X-ray monitor that monitors a state of an X-ray emitted from a target. Hence the state of the X-ray can be monitored in real time to maintain the X-ray...
|
|
|
7286642 |
X-ray tube control apparatus and x-ray tube control method
A maximum tube voltage value setting module 240a, a warming-up module 240b, a limit tube voltage control module 240c, a limit tube current control module 240d and a focus grid electrode control...
|
|
|
7203270 |
X-ray computed tomographic apparatus
An X-ray computed tomographic apparatus includes a gantry, a reconstructing portion, and a tube current value determining portion. The gantry acquires projection data of an arbitrary range in a...
|
|
|
7142630 |
X-ray computed tomography apparatus with X-ray intensity control
An X-ray computed tomography apparatus includes an X-ray tube, a high voltage generator which generates a high voltage to be applied to the X-ray tube, an X-ray detector having a plurality of X-ray...
|
|
|
7095186 |
Control circuit for controlling an electron-emitting device
A control circuit for controlling an electron-emitting device is formed to draw, with a voltage applied, an excitation current being related to a number of electrons emitted. The inventive control...
|
|
|
7079622 |
Method for supplying power to a heating element of a source of radiation and corresponding source
A method for determining the heating time constant of a cathode of an X-ray tube. The value of a boost current applied during a preliminary period must be a function of both a pre-existing heating...
|
|
|
7039163 |
Method for automatically setting an X-ray dosage for producing an X-ray tomographic image
For automatically controlling or adjusting the X-ray dose when scanning an examination subject in a CT apparatus, a series of reference measurements are initially made by obtaining CT images of...
|
|
|
7023960 |
Method of adjusting the emission rate of radiation from a source of radiation
To adjust the emission rate of radiation from an X-ray tube, the value of the current of the X-ray tube is modeled empirically by a second-order polynomial function depending on the heating current...
|
|
|
6990172 |
Method and apparatus to determine tube current modulation profile for radiographic imaging
A method and apparatus is disclosed to acquire scout scan data of a subject and analyzed to determine a peak-to-peak modulation amplitude of a normalized waveform indicative of subject size and...
|
|
|
6987834 |
Optimized record technique selection in radiography and fluoroscopy applications
A method for regulating a scan dosage includes generating an initial technique command based on default patient size or the previous exposure and on completion of exposure, receiving the actual...
|
|
|
6961407 |
Device to detect pressure in an x-ray tube
In a method to detect the pressure in an x-ray tube having a cathode of the x-ray tube that is heated with a heater current, and wherein electrons are accelerated between the cathode and an anode...
|
|
|
6956929 |
Method for controlling modulation of X-ray tube current using a single topogram
In a method for controlling the modulation of the tube current of an X-ray tube in the production of images using computed tomography, a single topogram of the examination subject is obtained and...
|
|
|
6904127 |
System and method of medical imaging having default noise index override capability
A system and method of medical imaging is designed to reduce a patient's X-ray exposure during scanning. The system automatically generates a default noise index from a received set of scan...
|
|
|
6885728 |
X-ray source
A compact X-ray source is disclosed, improving controllability and insulation from unwanted high voltage effects. In one aspect, an active variable conductance device (130, 330) connected in series...
|
|
|
6775352 |
Method and system for implementing variable x-ray intensity modulation schemes for imaging systems
A method, system and medium for modulating the x-ray power of an imaging system so as to maintain a desired image noise in the imaging system is disclosed. In an exemplary embodiment, the method...
|
|
|
6768786 |
Circuit arrangement and method for generating an x-ray tube voltage
A circuit arrangement for generating an X-ray tube voltage is described, wherein a switching device, connected downstream of a voltage controller (Gsu) and a oscillating current controller (Gri),...
|
|
|
6553095 |
Automatic exposure control for dental panoramic and cephalographic x-ray equipment
An apparatus and method used in dental panoramic and cephalographic x-ray equipment provides automatic adjustment of the pre-programmed exposure factors in order to obtain optimisation of the grey...
|
|
|
6473491 |
Method and x-ray device using adaptable power source
A method described includes positioning an x-ray emitter at a treatment area, where the x-ray emitter is connected to a cable, setting a voltage source at a source voltage, and measuring a current...
|
|
|
6178226 |
Method for controlling the electron current in an x-ray tube, and x-ray system operating according to the method
In a method and x-ray system for controlling the electron current in an x-ray tube emitted from a continuously heated electron emitter with an allocated focussing electrode to an anode, the...
|
|
|
6104781 |
X-ray generator for powering an X-ray tube comprising at least two electron sources
An X-ray generator for powering an X-ray tube, has at least two electron sources for forming focal spots of different sizes at the same area of the anode. The resolution can be adapted to relevant...
|
|
|
6067344 |
X-ray ambient level safety system
A method for modulating the intensity of an x-ray beam in an x-ray inspection system so as to maintain the highest penetration power and optimum image quality subject to keeping the ambient...
|
|
|
5978446 |
Arc limiting device using the skin effect in ferro-magnetic materials
A high voltage power supply includes a high voltage high frequency generator (10) having outputs (12, 14). An arc limiting device (20) is connected in series to the outputs (12, 14) of the...
|
|
|
5878109 |
X-ray apparatus
An X-ray apparatus includes an X-ray source with an X-ray tube (2) arranged in a protective tube housing (1) and a filament converter which is connected to the cathode (3) of the X-ray tube (2) and...
|
|
|
5748701 |
Cathode system for an X-ray tube
A cathode system for an x-ray tube has an electron emitter and a further electrode arranged between electron emitter and the x-ray tube anode. This further electrode can be connected to a potential...
|
|
|
5727043 |
X-ray diffractometer
It is an object of the present invention to provide an x-ray diffractometer for measuring an x-ray diffraction pattern obtained by irradiating x-rays 6 to a sample 7, in which, even though...
|
|
|
5708694 |
X-ray generator
An x-ray generator wherein the tube current is kept constant independently of the drop in the cathode temperature after the radiation is switched on has a control circuit for the tube filament...
|
|
|
5696807 |
Methods and apparatus for modulating x-ray tube current
The present invention, in one form, is a system for modulating x-ray tube current as a function of gantry angle and slice location in a computed tomography system. In one embodiment, a desired...
|
|
|
5680430 |
Method and apparatus for controlling and optimizing output of an x-ray source
A method for controlling output of an x-ray source to optimize x-ray energy arriving at an associated x-ray receptor during linear tomographic examination. The method comprises the steps of...
|
|
|
5625662 |
Modulating x-ray tube current in a CT system
The present invention, in one form, is an x-ray CT system that modulates x-ray tube current as a function of gantry angle and reconstruction algorithm weighting coefficients. View indexes are...
|
|
|
5619042 |
System and method for regulating delivered radiation in a radiation-emitting device
In a radiation emitting device, particularly in a radiation treatment device, the actual radiation delivered to an object via a radiation beam is adjusted dependent on the dimensions of an opening...
|
|
|
5517545 |
X-ray apparatus
This invention aims at providing an X-ray apparatus having a stable X-ray output. Since the focus electrode of the X-ray tube of the X-ray apparatus according to this invention maintains a ground...
|
|
|
5333169 |
Circuit arrangement for measuring the X-ray tube current
A circuit arrangement for accurately measuring the x-ray tube current substantially eliminates measurement errors by taking the displacement current caused by the capacitance of the high-voltage...
|
|
|
5329568 |
X-ray generator with x-ray tube voltage regulation for maintaining the x-ray tube current at a maximum value
An x-ray generator includes an x-ray tube voltage regulation system which automatically adapts to line impedance and fluctuations in the network voltage, so as to maintain the x-ray tube current at...
|
|
|
5140246 |
High performance high speed starter for an x-ray tube rotor
A sationary rotatable anode (42) of an x-ray tube (10) is electrically connected to a high speed starter (24). The starter (24) includes an inductive rotor (44) connected to the anode (42), a main...
|
|
|
5097494 |
X-ray automatic synchronous inspection system
An X-ray inspection apparatus and method allow inspection of the contents of containers moving rapidly past an inspection station. The system includes an X-ray source pulsed by control logic, an...
|
|
|
5077772 |
Rapid warm-up x-ray tube filament power supply
A power supply (C) for an x-ray tube filament (10) selectively functions either as a constant voltage source (12) or a constant current source (14). A control circuit (A) includes a voltage...
|
|
|
5077773 |
Automatic filament calibration system for x-ray generators
A voltage control (22) controls the voltage applied between an anode (12) and a cathode filament (14) of an x-ray tube (10). A filament control (16) controls the amount of current fed through the...
|
|
|
5067143 |
Current detecting circuit for X-ray tube
A current detecting circuit for an X-ray tube is disclosed which includes a DC high voltage generating circuit connected across a filament and an anode of the X-ray tube and current detecting means...
|
|
|
5012498 |
X-ray tomography device
The invention concerns an X-ray tomograph device.This device makes it possible to obtain the image (1) of a plane cutting (2) of an object (3). In particular, it comprises an X-ray source (4) which...
|