Matches 1 - 50 out of 72 1 2 >


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US20100246752 DYNAMIC COLLIMATION IN CONE BEAM COMPUTED TOMOGRAPHY TO REDUCE PATIENT EXPOSURE  
When performing a fly-by or helical CT scan of a subject, radiation dose is limited by positioning a dynamic collimator (142) between the subject and an X-ray source (112). The collimator moves...
US20140254768 MULTI-LEAF COLLIMATORS  
The leaves of a multi-leaf collimator can be driven more easily and hence more quickly if they are supported on a ball-race instead of in a sliding groove. A recirculating path is preferred, in...
US20130142313 Contour Collimator Having a Liquid Impermeable to X-Rays  
A contour collimator and a method for setting a contour of a radiation path of an x-ray are provided. A liquid impermeable to the x-ray forms the contour.
US20130216026 METHOD AND SYSTEM FOR TREATING MOVING TARGET  
A method and system for providing intensity modulated radiation therapy to a moving target is disclosed. According to a preferred embodiment of the invention, a treatment plan for providing...
US20110200170 Method and System for Treating Moving Target  
A method and system for providing intensity modulated radiation therapy to a moving target is disclosed. According to a preferred embodiment of the invention, a treatment plan for providing...
US20140119508 COLLIMATOR MODULE, RADIATION DETECTOR HAVING COLLIMATOR MODULE, RADIOLOGICAL IMAGING APPARATUS HAVING COLLIMATOR MODULE, AND CONTROL METHOD OF RADIOLOGICAL IMAGING APPARATUS  
A collimator module which may be disposed in a radiation detector of a radiological imaging apparatus using the collimator module may include a first collimator having a plurality of openings,...
US20090207975 Multi-leaf collimator  
A multi-leaf collimator for use in a radiotherapeutic apparatus comprises a plurality of elongate narrow leaves arranged side-by side and supported in a frame, the frame having upper and lower...
US20100054408 Irradiation Device and Collimator  
An irradiation device for radiation treatment and a collimator (1) are used to define a beam of high-energy rays (2) with beam limitation by means of an iris diaphragm (5) having adjusting...
US20150085982 COLLIMATOR FOR RADIOTHERAPY APPARATUS  
A collimator for a radiotherapy apparatus, comprising a block of radiation-attenuating material having a front face forming the leading edge of the block and at least one main rear face defining...
US20110182404 Collimator with an adjustable focal length  
The invention relates to a collimator with adjustable focal length, especially for use in X-ray testing devices whose operating principle is based on diffraction phenomena in an object. Fixed...
US20100008472 LAMELLA COLLIMATOR AND BEAM THERAPY APPLIANCE  
A lamella collimator, in particular for a beam therapy appliance, is provided. The lamella collimator has a plurality of lamellae, which can be moved by a motor or motors in a movement direction...
US20100054420 ADJUSTING DEVICE FOR BARRIER BLADE OF SCATTERED X-RAY  
An adjusting device for a barrier blade includes a barrier blade for limiting scattered X-ray of a tube and a base plate for mounting the barrier blade. The adjusting device also includes a...
US20090220046 COLLIMATOR DEVICE FOR RADIOTHERAPY AND RADIOTHERAPY APPARATUS USING THE SAME  
Provided is a collimator device for radiotherapy including: a body including a first through unit and disposed on a path of high energy radiation which in use is irradiated toward a patient's...
US20120275560 COMPOSITE MATERIAL X-RAY COLLIMATOR AND METHOD OF MANUFACTURING THEREOF  
A composite material pre-patient collimator for shaping an x-ray beam in a computed tomography (CT) system is disclosed. The pre-patient collimator includes a base comprised of a first material...
US20090041188 METHOD AND SYSTEM FOR FOUR DIMENSIONAL INTENSITY MODULATED RADIATION THERAPY FOR MOTION COMPENSATED TREATMENTS  
A deliverable four dimensional (4D) intensity modulated radiation therapy (IMRT) planning method is disclosed, for delivery using a linear accelerator with a dynamic multi-leaf collimator (DMLC)....
US20090304150 SLIT-SLAT COLLIMATION  
This invention is directed to a collimator and collimation techniques. Specifically, the invention is directed to a collimator and method for collimation wherein the collimator combines the...
US20130003936 Adjustable-Jaw Collimator  
An adjustable collimator for shaping a beam of particles, such as for purposes of inspecting contents of a container. The adjustable collimator has an obscuring element substantially opaque to...
US20080285718 X-RAY DIAPHRAGM  
A diaphragm system for an x-ray apparatus for scanning an object is provided. The diaphragm system includes a diaphragm support arranged within a radiation path of an x-ray beam. The diaphragm...
US20080037710 Steerable Multistage Collimation for Radiographic Imaging  
A system for reducing scatter in radiographic imaging systems while permitting large area imaging. Multiple collimators are used to successively trim the radiation beam to match the detector plate...
US20130020495 Compact High Precision Adjustable Beam Defining Aperture  
The present invention provides an adjustable aperture for limiting the dimension of a beam of energy. In an exemplary embodiment, the aperture includes (1) at least one piezoelectric bender, where...
US20110188624 TOMOSYNTHESIS WITH SHIFTING FOCAL SPOT AND OSCILLATING COLLIMATOR BLADES  
In a tomosynthesis system a static focal spot is moved in a direction opposite to and generally synchronized with the directional movement of an x-ray source and X-ray collimator blades are moved...
US20100091937 X-RAY BEAM MODIFYING DIAPHRAGM AND DIAPHRAGM DEVICE  
A diaphragm and diaphragm device for the specific manipulation of x-ray radiation that emanates from an x-ray focus of a CT apparatus and serves for scanning an examination subject, wherein the...
US20100061511 Modulatable Radiation Collimator  
The invention specifies a radiation collimator, in particular an x-ray collimator, which can be arranged between a radiation source outputting radiation and an object. The radiation collimator...
US20140226794 Radiation Field and Dose Control  
A system and method includes a matrix of elements, each of the elements comprising a respective radiation-attenuating material providing a respective radiation attenuation profile over a...
US20100278310 MULTI-LEAF COLLIMATOR WITH ROTATORY ELECTROMECHANICAL MOTOR AND OPERATING METHOD  
Multi-leaf collimators have a guide frame (1) with a plurality of metal plates (3) arranged in a displaceable fashion, by which each individual metal plate can be displaced by an electric motor...
US20100046713 LEAF SEQUENCING ALGORITHM FOR MOVING TARGETS  
A method of providing intensity modulated radiation therapy to a moving target is disclosed. The target moves periodically along a trajectory that is projected onto a multi-leaf collimator (MLC)...
US20100091938 MULTI-BEAM X-RAY DEVICE  
A multi-beam x-ray device has a multi-beam x-ray tube in the form of a polygon, wherein the focal spots of the x-ray radiation are arranged along the polygon sides. An x-ray tube control unit...
US20100111261 ADD-ON-X-RAY-COLLIMATOR FOR NON-SYMMETRICAL BEAM COLLIMATION  
It is described a device (10) for non-symmetrical X-ray beam collimation of a X-ray tube (30), wherein the device comprises a housing (1), a X-ray absorbing plate (2) for collimating a x-ray...
US20100091939 CIRCULAR MULTI-BEAM X-RAY DEVICE  
A multi-beam x-ray device has a multi-beam x-ray tube with an interior in the form of a circle. Focal spots of the x-ray radiation are arranged along the circle. An x-ray tube control unit...
US20120012763 Method and Apparatus Pertaining to Use of Jaws During Radiation Treatment  
These various embodiments are employed in conjunction with the use of both a multi-leaf collimator and jaws that are interposed between a source of radiation and a treatment target while sourcing...
US20110182492 ANGIOGRAPHIC IMAGE ACQUISITION SYSTEM AND METHOD WITH AUTOMATIC SHUTTER ADAPTATION FOR YIELDING A REDUCED FIELD OF VIEW COVERING A SEGMENTED TARGET STRUCTURE OR LESION FOR DECREASING X-RADIATION DOSE IN MINIMALLY INVASIVE X-RAY-GUIDED INTERVENTIONS  
The present invention refers to an angiographic image acquisition system and method which can beneficially be used in the scope of minimally invasive image-guided interventions. In particular, the...
US20090213990 X-ray apparatus  
An investigative X-ray apparatus comprises a source of X-rays emitting a cone beam centred on a beam axis, a collimator to limit the extent of the beam, and a two-dimensional detector, the...
US20140270091 ROTATING DRUM COLLIMATOR  
Exemplary embodiments of the present invention are directed to a rotating drum collimator for collimating an energy beam to produce a scanning beam that includes a drum having a substantially...
US20100119036 Limiting An X-Ray Beam In Connection With Dental Imaging  
The present invention relates to limiting an x-ray beam used in connection with dental extra oral imaging by a plate mechanism (1) arranged to be operated by a drive mechanism including an...
US20090196401 Machine vision system  
A fluorescing marker is used in order to mark (for example) a leaf of a multi-leaf collimator and/or the reference points within the field of view. The markers are illuminated with light tuned to...
US20140254754 RADIATION GENERATING APPARATUS AND RADIATION IMAGING SYSTEM  
A radiation generating apparatus including: a radiation generating unit for emitting radiation through a transmission window; and a movable diaphragm unit including a restricting blade for...
US20090285749 Apparatus and Method for Functional Neurological Screening  
A variable focus collimator device and method for functional neurological screening. The variable focus collimator uses sets of corresponding holes in two plates of gamma shielding material,...
US20140226793 AUTOMATIC FIELD-OF-VIEW SIZE CALCULATION CONSTRAINT  
Systems and methods for generating an image. One system includes a processor. The processor is configured to receive a requested object field-of-view and determine if the object field-of-view is...
US20100296631 FILTERING OF A SOURCE OF PULSED RADIATION  
A source of pulsed radiation is coupled to a positionable filter. The positionable filter includes an element that produces an indication of a position of the filter. The source is configured to...
US20150036801 RADIATION GENERATING APPARATUS AND RADIATION IMAGING SYSTEM  
A radiation generating apparatus 1 comprising a radiation generating unit 2 which emits radiation, and a movable diaphragm unit 3 which is arranged on the radiation generating unit 2, wherein the...
US20130272504 X-Ray Dose Reduction by Controlled Shutter Speed  
A fast moving X-Ray shutter has four independently controlled blades defining a Region of Interest (ROI). The ROI area receives the normal X-Ray dose and is exposed at the machine's X-ray pulse...
US20100246764 SOURCE GRATING FOR X-RAYS, IMAGING APPARATUS FOR X-RAY PHASE CONTRAST IMAGE AND X-RAY COMPUTED TOMOGRAPHY SYSTEM  
A source grating for X-rays and the like which can enhance spatial coherence and is used for X-ray phase contrast imaging is provided. The source grating for X-rays is disposed between an X-ray...
US20100274120 SYNCHRONOUS INTERVENTIONAL SCANNER  
When performing an interventional CT scan on a subject, radiation dose is limited by employing a dynamic collimator (142) that collimates X-rays emitted by an X-ray source (112). The X-ray source...
US20120155615 METHOD AND DEVICE FOR ADJUSTING A COLLIMATOR RADIATION FIELD IN AN X-RAY IMAGING SYSTEM  
A method and device for adjusting a collimator radiation field and an X-ray imaging system including the device are disclosed.
US20130251109 BEAM LIGHTING UNIT FOR RADIOGRAPHIC APPARATUS  
Method for limiting an X-ray beam, wherein the X-ray beam is limited by a limiting unit comprising a couple of blades approaching each other or moving away from each other to adjust the width of a...
US20130136239 APPARATUS & METHODS FOR COLLIMATION OF X-RAYS  
Apparatus and methods for collimation of x-ray beams. According to various embodiments, an x-ray apparatus may comprise a first rotatable disk comprising a first plurality of angled slots and a...
US20150164443 APPARATUS & METHODS FOR COLLIMATION OF X-RAYS  
Apparatus and methods for collimation of x-ray beams. According to various embodiments, an x-ray apparatus may comprise an x-ray source, a first rotatable disk comprising a first plurality of...
US20130294582 X-RAY IMAGING APPARATUS  
An X-ray imaging apparatus is provided with a multi X-ray source and a collimator in which a plurality of slits for X-rays to pass through are two-dimensionally formed, the size and position of...
US20100166150 Collimation apparatus for radiotherapy  
A radiotherapy apparatus comprises a means for producing a beam of radiation directed along a beam axis and having a width in first and second directions transverse to the beam axis, a multi-leaf...
US20150131781 MOVABLE DIAPHRAGM UNIT, X-ray GENERATING APPARATUS AND X-RAY IMAGING SYSTEM  
A movable diaphragm unit is configured such that, when a restricting blade is moved away from a normal line extending from a center of a focal spot of X-ray to a first virtual plane including a...

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