Koninklijke Philips Corporation N.v.

U.S. Philips Corporation

Philips Intellectual Property & Standards Gmbh

Philips Gmbh

Heidrun Steinhauser

Herman Stegehuis

Onno Jan Wimmers

Rudolph M Snoeren

Matthias Simon

Johannes Wilhelmus Maria Jacobs

Nicolaas Jan Noordhoek

Peter Lex Alving

Frans Henk Kremer

Ronald Johannes Gelten

Michael Grass

Hugo Johan Cornelissen

Gereon Vogtmeier

Herfried Karl Wieczorek

Juergen Weese

Joerg Bredno

Coen Adrianus Verschuren

Alexandra Groth

Willem G Opheij

Dirk Schaefer

Peter Maria Johannes Rongen

Walter Ruetten

Berend Jan Willem Ter Weeme

Klaus Juergen Engel

Alberto Fazzi

Tiemen Poorter

Peter George Van De Haar

Markus Johannes Harmen Den Hartog

Bernd Menser

Peter Prinsen

Christiaan Kok

Ronaldus Petrus Johannes Hermans

Jozef P Benschop

Antonius Johannes Cornelius Bruijns

Jorrit Jorritsma

Robin Pieter De Paus

Alexander Johannes Admiraal

Michiel Wouter De Wildt

Michael John Murdoch

Nicolaas J Noordhoek

Dual layer detector (XD) for X-ray imaging, comprising at least two light sensitive surfaces (LSS,LSS). The dual layer detector further comprises a first scintillator layer (SL, SL) including at least one scintillator element (SE) capable of converting X-radiation into light, the element having two faces, an ingress face (S) for admitting X-radiation into the element (SE) and an egress face (S) distal from the ingress face (S), wherein the two faces (S,S) are arranged shifted relative to each other, so that a longitudinal axis (LAX) of the scintillator element (SE) is inclined relative to a normal (n) of the layer. The scintillator element (SE) has a sidewall (w,w) extending between the two faces (S,S), the scintillator layer (SL) further comprising a second such scintillator element (SE') having a sidewall (w&#x2032;,w&#x2032;), the second scintillator element (SE&#x2032;) neighboring the first scintillator element (SE), wherein the sidewall (w,w) of the first scintillator element (SE) and the sidewall (w&#x2032;,w&#x2032;) of the second scintillator element (SE) are neighbored and are inclined relative to each other. The dual layer detector (XD) further comprises a second such scintillator layer (SL). One of the light sensitive surfaces (LSS,LSS) is arranged in between the two scintillator layers (SL, SL).

X-ray detector with focused scintillator structure for uniform imaging

An X-ray detector is positioned relative to an X-ray source such that at least a part of a region between the X-ray source and the X-ray detector is an examination region for accommodating an object. The X-ray source and X-ray detector are controlled by a processing unit in order to operate in a first imaging operation mode, a second imaging operation mode, and/or a third imaging operation mode. The detector comprises a first scintillator, a second scintillator, a first sensor array, and a second sensor array. The first scintillator is disposed over the second scintillator such that X-rays emitted from the X-ray source first encounter the first scintillator and then encounter the second scintillator.

Detector for X-ray imaging

An X-ray imaging apparatus (IA) having a plurality of X-ray sources (sj) comprising an anti-scatter grid (ASG) for X-ray imaging comprising at least two sets (Mj) of linear x-radiation opaque strips (STj). Each of the strips in the at least two sets have a respective longitudinal axis (Li). There are at least two strips from different sets of the at least two sets that have non-parallel longitudinal axes.

X-ray imaging apparatus for compact (quasi-)isotropic multi source x-ray imaging

An interventional X-ray system is proposed, the system including a multi X-ray source unit positioned below a patient table. This 'multiblock' may comprise several x-ray sources with focal spot positions distributed along the x-y (table) plane. The x-ray sources are operable in a switching scheme in which certain x-ray sources may be activated in parallel and also sequential switching between such groups is intended. The switching may be carried out so that several images with different projection angles can be acquired in parallel. In other words, an optimal multi-beam X-ray exposure is suggested, wherein fast switching in one dimension and simultaneous exposure in the 2nd dimension is applied.

System and method for multi-beam X-ray exposure for 4D imaging

An apparatus (IP) and a method to generate temporally-aligned image frames for image-streams (LS, RS) in a multi-channel (CR, CL) imaging system (). The apparatus (IP) allows reducing or removing temporal distance artifacts that occur when processing the frames into combined image material. The apparatus can also be used to improve signal-to-noise ratio of the frames. The multi-channel imaging system () may be a stereoscopic imager.

Temporal alignment of and signal-to-noise-ratio enhancment in image streams for multi-channel x-ray imaging

The present invention relates to an apparatus for imaging an object. It is described to receive () by at least a portion of first pixels of a first area (A, A, A, A, A, A, A, A, A) of an X-ray detector () first radiation emitted by at least one X-ray source (). The X-ray detector is configured such that X-ray radiation received by a pixel leads to the generation of signal in that pixel. A plurality of first signals representative of corresponding signals on the plurality of first pixels are stored () in at least one first plurality of storage nodes associated with the first area. Second radiation emitted by the at least one X-ray source () is received () by at least a portion of second pixels of a second area (B, B, B, B, B, B, B, B, B; C) of the X-ray detector. A plurality of second signals representative of corresponding signals on the plurality of second pixels are stored () in at least one second plurality of storage nodes associated with the second area.

Driving of an X-ray detector to compensate for cross scatter in an X-ray imaging apparatus

A radiation system (), comprising a patient support platform (). An X-ray radiation source () is positioned beneath the patient support platform and enclosed by fixed radiation shielding. An X-ray radiation detector () is positioned above the patient support platform. A detector X-ray radiation shield () comprising shield extension () is arranged on either side of the patient support platform, which extend from the X-ray radiationdetector to the fixed radiation shielding. The shield extensions are able to be moved relative to the source radiation shield to allow access to a patient on the support platform.

Radiation system

A radiation detector for combined detection of low-energy radiation quanta and high-energy radiation quanta has a multi-layered structure. A rear scintillator layer () is configured to emit a burst of scintillation photons responsive to a high-energy radiation quantum being absorbed by the rear scintillator layer (). A rear photosensor layer () attached to a back side of the rear scintillator layer () is configured to detect scintillation photons generated in the rear scintillator layer (). A front scintillator layer () arranged in front of the rear scintillator layer () opposite the rear photosensor layer () is configured to emit a burst of scintillation photons responsive to a low-energy radiation quantumbeing absorbed by the front scintillator layer (). A front photosensor layer () attached to a front side of the front scintillator layer () opposite the rear scintillator layer () is configured to detect scintillation photons generated in the front scintillator layer (). The high-energy radiation quantum is a gamma ray and the low-energy radiation quantum is an X-ray.

Radiation detector for combined detection of low-energy radiation quanta and high-energy radiation quanta

An X-ray detector () includes a light detection arrangement () such as a CMOS photodetector, a scintillator layer () such as a CsI:Tl layer, a reflector layer () and a light emission layer () interposed between the scintillator layer () and the reflector layer (). The light emission layer () may include an OLED and may have a thickness of less than 50 &#x3bc;m. Thereby, a sensitivity and resolution of the X-ray detector may be improved.

X-ray detector with improved spatial gain uniformity and resolution and method of fabricating such X-ray detector

A system for providing a simulated spatial live viewing of an object includes a cathode arrangement configured to generate an electron beam towards a target area of an anode, and a processor configured to control the electron beam to hit the anode at a moving focal spot that moves at least in a first moving direction transverse to a viewing direction. Thus, X-ray radiation is generated by the electron beam impinging on the moving focal spot. Further, the system includes a detector configured to detect X-ray radiation at least partially passing an object and to generate respective X-ray detection signals. The processor is further configured to generate monoscopic 2D images based on the detection signals, where the monoscopic 2D images relate to different view-points as defined by the moving focal spot. A display is configured to display the monoscopic 2D images are from the different view-points.

Simulated spatial live viewing of an object from variable view-points

A radiation detector device for detecting a primary radiation includes a scintillator which generates a converted primary radiation in response to incoming primary radiation and a photo detector for detecting the converted primary radiation. The radiation detector device further includes a secondary radiation source for irradiating the scintillator with a secondary radiation which has a wavelength different from a wavelength of the first radiation and which is capable of producing a spatially more uniform response of the scintillator to primary radiation.

Reducing trap effects in a scintillator by application of secondary radiation

An X-ray imaging system includes an x-ray image acquisition unit, a display unit, an input unit, and adapting means. The x-ray image acquisition unit acquires a first image of a volume of interest of an object in a first projection direction and acquires a second image in a second projection direction. The display unit displays the first and the second image. The input unit determines the second projection direction by an input of a user. The user input includes a change in a viewing-direction of the user viewing the first image. The adapting means adapt a spatial relation between the projection direction of the image acquisition unit and the volume of interest of the object such that the projection direction correlates with the second viewing direction.

Direct control of X-ray focal spot movement

An X-ray tube includes a cathode, an anode, and a deflection device. The cathode and the anode generate an electron beam that is directed toward a target area of the anode to generate X-ray radiation through electrons of the electron beam impinging the target area. The deflection device controls the electron beam such that the electrons hit the anode at different focal spot positions. The deflection device provides gradual deflection for a stepless transition between monoscopic viewing and stereoscopic viewing. For monoscopic viewing, the X-ray radiation is generated from a single focal spot position. For stereoscopic viewing, the X-ray radiation is generated from two focal spot positions spaced apart in a first stereo-direction transverse to a viewing direction. The deflection device provides gradual deflection for a stereo focal spot position in a second stereo-direction, which is transverse to the first stereo-direction and the viewing direction.

Gradual X-ray focal spot movements for a gradual transition between monoscopic and stereoscopic viewing

System for live 3D x-ray viewing comprising an x-ray source, an x-ray detector, a processing unit, a monitor and means for detecting viewer's eyes, wherein the x-ray source and the x-ray detector are arranged at a movable C-arm. The x-ray source comprises two focal spots, wherein a separation of the two focal spots is adjustable so that the image acquisition angle between the two focal spots matches the viewing angle between the two eyes.

Live 3D X-ray viewing

A system, apparatus and method are provided for measuring and removing the influence of pulsatility on contrast agent flow in a region of interest of a vascular system of a patient. Once the change of blood speed over the cardiac cycle is known (pulsatility), this influence is removed from acquired image sequence for outcome control such that 'quasi-stationary', regular flow acquisition is passed on to subsequent visualization and analysis processes. A contrast agent injector is also provided that simultaneously measures and uses ECG to inject a known contrast agent at a fixed point over the cardiac cycle or such that a known amount of contrast agent will arrive at a known time at a region of interest in the vasculature of a patient, thus controlling one of the main unwanted variables in an acquisition of blood flow sequences.

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Eindhoven, Netherlands

Heidrun Steinhauser