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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... |
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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... |
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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. |
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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... |
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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... |
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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,... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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).... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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)... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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,... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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. |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |