摘要:
The invention relates to a radiation image capturing system (20) and a method for operating a radiation image capturing system (20) comprising a processing unit configured to determine at least three distances between at least one first distance sensor (12a) provided at a radiation generation unit (2) and at least three second distance sensors (13a, 13b, 13c) provided at a detection unit (6) based on one or more signals emitted by the first distance sensor (12a) and to determine an orientation of the radiation generation unit (2) and detection (6) unit relative to each other based on inclination information provided by a first sensor unit (10) provided at the radiation generation unit (2) and a second sensor unit (11) provided at the detection unit (6). Alternatively, the processing unit is configured to determine distances between at least three first distance sensors provided at the radiation generation unit (2) and at least three second distance sensors (13a, 13b, 13c) provided at the detection unit (6) based on signals emitted by the at least three first distance sensors and to determine an orientation of the radiation generation unit (2) and detection (6) unit relative to each other based on the distances between the at least three first distance sensors and the at least three second distance sensors (13a, 13b, 13c). The processing unit is further configured to determine a distance between the radiation generation unit (2) and the detection unit (6) based on the determined distances between the at least one first distance sensor (12a) and the at least three second distance sensors (13a, 13b, 13c) and on the determined orientation of the radiation generation unit (2) and the detection unit (6) relative to each other.
摘要:
The invention relates to a radiation image capturing system (1) and a method for operating a radiation image capturing system, the system (1) comprising a radiation generation unit (2) configured to generate X-ray radiation (4); a carriage (7) on which the radiation generation unit (2) is mounted, wherein the carriage (7) is a mobile carriage and/or the radiation generation unit (2) is moveably mounted on the carriage (7); at least one detection unit (6) configured to capture a radiation image based on X-ray radiation (4) generated by the radiation generation unit (2) and transmitted and/or reflected by an object (5); a first sensor unit (10) provided at the radiation generation unit (2) and a second sensor unit (11) provided at the detection unit (6), wherein each of the first and second sensor unit (10, 11) comprises at least one accelerometer sensor configured to capture first information regarding an acceleration of the accelerometer sensor with respect to three spatial directions, at least one gyroscope sensor configured to capture second information regarding an orientation of the gyroscope sensor with respect to the three spatial directions, and at least one magnetic field sensor configured to capture third information regarding a magnetic field surrounding the magnetic field sensor along the three spatial directions; and a processing unit configured to determine an orientation and/or a position of the radiation generation unit (2) and the detection unit (6) relative to each other by considering the first, second and third information captured by the accelerometer, gyroscope and magnetic field sensor, respectively, of the first sensor unit (10) provided at the radiation generation unit (2), and by considering the first, second and third information captured by the accelerometer, gyroscope and magnetic field sensor, respectively, of the second sensor unit (11) provided at the detection unit (6).
摘要:
A method for reducing image disturbances caused by reconstructed defective pixel clusters located in signal-gradient affected diagnostic image regions. An individually adapted central symmetrical pair reconstruction (CSP) kernel is composed for a defective image pixel based on a kernel-pair candidate order encoded in a model thereby using the pixel's validity state. The image impacted by defective pixels is corrected in real-time by statistical filtering or spatial convolution of the kernel-associated image data accessible via a predetermined CSP kernels image-offsets structure.
摘要:
A query rule set is created by applying a query generation query rule to an inference rule set so as to generate a query rule set via a reasoning process executed by a reasoner whereby said reasoner answers said query generation query rule by taking the basic graph pattern of the conclusion of one or more inference rules in said inference rule set and generating a corresponding query rule for said basic graph pattern, wherein in said generated query rule both premise and conclusion are using said basic graph pattern.
摘要:
A method of automatically configuring an X-ray imaging system for taking an X-ray image of an object includes, first, obtaining one or more depth images from one or more depth cameras covering at least an area covered by an X-ray bundle of an X-ray source. Then, a thickness of the object is determined from the depth image(s). Then, this thickness value is converted to a dose configuration of the X-ray imaging system by taking into account a transmission length of the X-ray bundle through the object and knowledge about tissue types being imaged.
摘要:
A fluoroscopy system (1) for processing and real-time display of fluoroscopy images (100) comprising: - a buffer (13) storing a first image (101) when the buffer (13) is below a threshold (3) as a stored image (120); - a unit (11) processing the stored image (120) and generating a processed image (110); - a display (12) displaying processed images (110); - a memory (14) storing a second image (102) as a stored unprocessed image (130) when the buffer (13) is not below the threshold (3), and storing processed images (110) as stored processed images (140).
摘要:
A computerized tomographic image exposure and reconstruction method wherein an object is subjected to irradiation during a relative movement of a source of radiation, said object and a radiation detector and wherein a digital representation of the radiation image of said object is computed by applying a tomographic reconstruction algorithm to image data read out of the irradiated radiation detector. A number of projection images are generated, each of said projection images being generated by integrating X-ray beams continuously emitted during said relative movement through a predefined movement path, and the created projection images are modeled in a tomographic reconstruction algorithm.
摘要:
A system (100) for selecting a selected hanging protocol (201) for a medical study includes a memory to store hanging protocols and to store a credibility factor for each of the hanging protocols; a selection engine adapted to combine a calculated matching score between each of the hanging protocols and the medical study with the credibility factor, thereby defining a relevance score for each of the hanging protocols, and to select the hanging protocol with the highest relevance score as the selected hanging protocol.