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7440547 |
CT scanner
A CT scanner which collects X-ray projection data of a subject and which generates an image in the subject from the projection data, the CT scanner includes tubes which emit X-rays and which...
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7372944 |
X-ray diagnostics device and method for controlling an X-ray diagnostics device
The invention relates to an x-ray diagnostics device having an x-ray tube for generating x-rays operated by a high voltage generator, having an x-ray detector for converting incident x-rays into...
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7317783 |
Reduced X-Ray exposure using power modulation
An X-ray imaging system includes an X-ray source operable to generate an X-ray beam, an X-ray receiver receiving the X-ray beam, a power generator generating power to the X-ray source to generate...
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7110500 |
Multiple energy x-ray source and inspection apparatus employing same
A multiple energy x-ray source capable of rapidly generating and delivering x-rays in the form of successive pulses that alternate between at least two different energy levels, as well as a...
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7050539 |
Power supply for an X-ray generator
A power supply for X-ray generators which includes at least one inverter ( 11, 12, 13 ), at least one transformer ( 111, 121, 131 ) and at least one voltage cascade ( 112, 122, 132 ) for generating...
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7010090 |
X-ray diagnosis apparatus with a function of x-ray fluoroscopy
An X-ray diagnosis apparatus and method for X-ray fluoroscopy in which the apparatus includes a generator, a detector, an integrator, a comparator, and a controller. In the apparatus and method, a...
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6882703 |
Electron source and cable for x-ray tubes
A system and method for providing pulsed power application for an x-ray tube that comprises an x-ray tube having an anode and cathode; and a power supply adapted to provide an anode-to-cathode gap...
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6816573 |
X-ray generating apparatus, X-ray imaging apparatus, and X-ray inspection system
The voltage applied to a first grid electrode 71 of an X-ray tube 11 by a grid voltage control section 110 is controlled with reference to a predetermined negative voltage from a negative...
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6385280 |
X-ray computed tomography apparatus with modulation of the x-ray power of the x-ray source
An x-ray CT apparatus has an x-ray source which emits an x-ray beam which is displaceable relative to an examination subject, the x-ray source emitting x-rays in the form of one or more pulses...
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6285740 |
Dual energy x-ray densitometry apparatus and method using single x-ray pulse
A dual-energy x-ray system is provided which is useful in densitometry and other applications. A dual energy x-ray source, formed field emission x-ray tube driven by a Marx generator, produces a...
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6111931 |
X-ray apparatus operable at different energy supply sources which respectively deliver different average electrical powers per unit of time
An x-ray system which can be operated at various energy supply sources which can respectively deliver different average electric powers per unit of time, has an x-ray source supplied by a voltage...
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5652777 |
Diagnostic X-ray apparatus
A diagnostic X-ray apparatus includes an X-ray tube, an image intensifier for converting an X-ray image of an object under examination to an optical image, a solid state image sensor device for...
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5546440 |
X-ray diagnostic apparatus
An X-ray diagnostic apparatus repeatedly radiates pulse-like X-rays, repeatedly images X-rays passing through an object to be examined at a predetermined frame period, and sequentially displays a...
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5544215 |
Digital angiography system with automatically determined frame rates
A subject is positioned on a patient support (12) between an x-ray source (10) and a radiation detector assembly (14). The x-ray source is gated (36) on or open prior to triggering (38) a video...
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5448614 |
Fluoroscopic imaging system
In an interventional radiography (IVR), for example in a percutaneous transluminal coronary angioplasty (PTCA), when the IVR includes a period in which the movement of the object is slow, a normal...
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5347571 |
X-ray tube arc suppressor
A high frequency voltage generator (10) produces a high positive voltage and a high negative voltage. A parallel connected coil (26) and diode (30) are connected between the high voltage supply and...
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5200984 |
Filament current regulator for an X-ray tube cathode
The disclosure relates to devices for supplying current to X-ray tube cathode filaments. The filament of a cathode is supplied with high-frequency current pulses given by a hyporesonant type DC/AC...
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5119409 |
Dynamic pulse control for fluoroscopy
An apparatus and method for dynamically controlling the generation of radiation pulses during pulse-type fluoroscopic imaging. Brightness of an image produced by a pulse is detected, converted to a...
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5077771 |
Hand held high power pulsed precision x-ray source
A pulsed precision x-ray source includes a miniaturized internally self-shielding x-ray tube and an integral generator contained in a hand-held housing for generating timed bursts of x-ray having...
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5056125 |
Discharge module for X-ray cable
A discharge module positionable between a high-voltage power supply and an X-ray tube for discharging any capacitive voltage remaining on the cable connecting the same. The discharge module...
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5044004 |
Flash X-ray apparatus
An apparatus for producing high energy, pulsed, flash X-rays which is of a useful laboratory-scale size. The apparatus includes a hydrogen thyratron coupled between a D.C. power source and a low...
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5001618 |
Ripple insensitivity method for regulating the voltage of a voltage signal
A direct-current high voltage obtained by rippling, stepping-up and rectification of a direct-current low voltage is regulated in such a manner as to ensure that the maximum value of direct-current...
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4947415 |
Flash x-ray apparatus
An apparatus for producing high energy, pulsed, flash X-rays which is of a useful laboratory-scale size. The apparatus includes a hydrogen thyratron coupled between a D.C. power source and a low...
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4924485 |
Portable radiography system using a relativistic electron beam
A portable radiographic generator is provided with an explosive magnetic flux compression generator producing the high voltage necessary to generate a relativistic electron beam. The relativistic...
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4783795 |
X-ray generator system
An X-ray generator system has first and second switching devices such as transistors which are complementarily turned on and off to intermittently apply a DC voltage to the primary winding of a...
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4731803 |
Circuit for operating an X-ray tube
A circuit for operating an X-ray tube, such as in a medical diagnostics apparatus, is connected with a high-voltage generator and a switch mechanism for connecting and disconnecting the X-ray tube...
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4706268 |
Digital radiography apparatus
Digital radiography apparatus uses a resonance-type high frequency inverter having a main switch in series with an auxiliary switch. An X-ray tube receives the pulsed power from the high frequency...
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H000154 |
Flash prefire detector
A circuit having indication lights for demonstrating when a flash trigger pulse has been fed to an X-ray photographic system or the like, is provided. The invention is especially useful in noting...
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4614999 |
High voltage pulsed power supply with time limiting nonlinear feedback
An apparatus for supplying high voltage pulsed direct current to an X-ray tube includes a transformer, a high frequency inverter circuit and a nonlinear feedback loop. The invention uses the high...
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4596029 |
X-ray generator with phase-advance voltage feedback
An X-ray generator system is provided with a high-voltage feedback loop for controlling the output of an inverter to thereby maintain a desired output voltage level. The voltage-feedback loop is...
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4589123 |
System for generating soft X rays
A system for generating soft X rays. This system includes valve apparatus for repetitively providing bursts of a gas of brief duration and a magnetic pulse compression power supply for providing...
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4532644 |
X-ray computerized tomograph
A rotate/rotate type X-ray computerized tomograph system employing a single-phase transformer as a high tension voltage supply whereby the secondary voltage of the single phase transformer is...
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4481654 |
X-Ray tube bias supply
A power supply is switchable to apply a low kilovoltage and a relatively higher kilovoltage alternately to the anode of an X-ray tube that includes a filament and a control grid. A grid bias...
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4439868 |
Medical X-ray radiation power supply apparatus
The present invention relates to a medical X-ray radiation power supply apparatus wherein a DC-operated switching circuit is connected at the primary side of a high voltage transformer, and a...
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4378501 |
Power supply for triode x-ray tubes
A power supply provides high voltage for a grid controlled x-ray tube. In the supply an oscillator generates a high frequency signal which is amplified and transformed to kilovoltage. A voltage...
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4361901 |
Multiple voltage x-ray switching system
X-ray pulses at two different photon energy levels are produced with an x-ray tube that has an adjustable resistor element in a circuit that connects the anode and filament of the tube to a high...
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4347547 |
Energy interlock system for a linear accelerator
The energy interlock system is designed for a linear accelerator having no electron beam bending system. The accelerator emits electron pulses which are directed to a target for generation of X-ray...
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4331876 |
One- or two-pulse x-ray diagnostic generator
In an exemplary embodiment, a rectifier bridge is inserted in the primary circuit of the high voltage transformer and has an electronic circuit for adjusting the primary current to adjust the...
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4259581 |
High-power diagnostical X-ray equipment with thyristor converter
An inverter for diagnostic X-ray equipment, comprising a thyristor bridge with an input diagonal connected in series with two commutating inductances across a DC power supply, is provided with a...
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4223225 |
Tomographic system having a single case on which are carried the X-ray tubes and detectors
The invention relates to a transverse axial tomographic system using a computer. This system includes a single casing in the form of a toroid on which are carried a number of X-ray tubes that can...
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4200795 |
Pulsate X-ray generating apparatus
A capacitor connected between the anode and cathode of an X-ray tube through an X-ray switch is charged by a DC output voltage including ripple component from a rectifier connected to the secondary...
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4168436 |
Computed tomography
Computed tomography apparatus having a continuously rotating X-ray projection and detection unit and circuits for controlling the X-ray tube to produce a radiation pulse of predetermined amplitude...
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4139771 |
Device for examining luggage by means of X-rays
A luggage inspection apparatus utilizing fluoroscopic examination in conjunction with an X-ray generator, with the fluoroscopic picture being received by a TV camera, the video signals of which are...
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4137454 |
Radiography
In pulsed X-ray fluoroscopy in which the fluoroscopic screen receiving the X-rays is subsequently observed by a video recording system incorporating an image intensifier, the quality of the video...
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4117334 |
Portable X-ray unit with self-contained voltage supply
An X-ray unit is provided having a self-contained high voltage supply including a pair of capacitors charged through diodes from a pair of transformer secondary windings and connected in series...
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4104526 |
Grid-cathode controlled X-ray tube
An X-ray tube whose output may be measured and controlled through the grid-cathode combination is disclosed. Additionally, a method of an apparatus for controlling the X-ray production from the...
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4099056 |
X-ray diagnostics installation comprising an X-ray tube with a control grid
A circuit arrangement connected to the control grid of the x-ray tube comprises a resistance bridge having its input terminals connected to a voltage exceeding the grid cut-off voltage of the tube,...
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4070579 |
X-ray tube transformer
A compact impedance transformer increases the magnitude of a voltage pulse applied to an X-ray generator. A transmission line transformer is implemented using a variable impedance spiral delay line...
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4063099 |
Dental apparatus for X-ray diagnosis
A dental apparatus for x-ray diagnosis comprises a unit, which includes an x-ray tube and a film holder and is adapted to rotate around a vertical axis, and a support for the head of a patient...
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4051378 |
High speed x-ray pulsing device
An x-ray tomography apparatus has a couch for a human subject to lie on, a cylindrical capsule to enclose part of the body, a flexible water filled bag to stabilize a portion of the human body...
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