Patent application number | Description | Published |
20080226038 | Radiation System and Radiation Beam Quality Detector and Method - A detector array is disposed relative to a radiation source such that radiation from the radiation source over a predetermined time period is substantially similar across the detector array. The detector array includes radiation detectors operatively coupled to detector electronics. The radiation filter material is disposed at least partially between the radiation source and the detector array such that different portions of the detector array are exposed to radiation from the radiation source through either different radiation filter material thicknesses or different radiation filter material compositions during the predetermined time period. So configured, information regarding the radiation such as beam quality information for radiation pulses is collected and used to confirm the quality of the radiation source or to adjust data collected by the radiation system. | 09-18-2008 |
20100310042 | Method and Apparatus to Facilitate Using Multiple Radiation-Detection Views to Differentiate One Material From Another - At least three radiation-detection views are used to facilitate identifying material as comprises an object being assessed along a beam path relative to that object. This comprises developing a first radiation-detection view ( | 12-09-2010 |
20110044493 | Apparatus to Facilitate Capturing Samples As Pertain to an Object to Be Imaged and Corresponding Method - One facilitates capturing samples as pertain to an object to be imaged by providing N pulsed sampling chains (where N is an integer greater than 1) where these sampling chains are in planes substantially parallel to one another and are substantially equidistant from adjacent others by a given distance. By one approach, the ratio of this given distance to a desired sample interval is approximately an integer that is relatively prime to N. So configured, a complete set of samples of the object can be captured by the sampling chains in a single pass notwithstanding that the object and the sampling chains are moving quickly with respect to one another. | 02-24-2011 |
20120082297 | Method and Apparatus Pertaining to Use of a Switched Voltage Clamp with an X-Ray Detector Amplifier - An x-ray detector amplifier operably couples to an analog-to-digital converter interface and a switched voltage clamp is operably disposed there between. By one approach, the switched voltage clamp comprises a switched electrical connection to a constant potential (such as, but not limited to, ground). These teachings will accommodate a control circuit configured to control the switched voltage clamp. This can comprise, for example, controlling the switched voltage clamp in synchronicity with the pulsed x-ray source. These teachings will also accommodate an integrator operably connected between the x-ray detector amplifier and the analog-to-digital converter interface. In such a case, the switched voltage clamp and be controlled to remove substantially any voltage offset contribution of the x-ray detector amplifier (due, for example, to significant temperature excursions) to a signal that is integrated by the aforementioned integrator. | 04-05-2012 |
20120326636 | Accelerator system stabilization for charged particle acceleration and radiation beam generation - A method for generating stabilized particle acceleration by a radio-frequency (RF) accelerator is described, comprising operating the accelerator in a warm-up mode during a warm-up time period, without injecting charged particles or without accelerating injected charged particles, and operating the accelerator in a beam-on mode during a beam-on time period after the warm-up time period, to accelerate charged particles injected by the charged particle source. Automatic frequency control to match an expected frequency of the accelerator during the beam-on time period, prior to the start of the beam-on time period, for stability, is also described. | 12-27-2012 |
20140265847 | SOFT-START ADAPTER FOR AC HEATED ELECTRON GUN - A circuit to power an electron source includes a filament transformer comprising a primary side and a secondary side, a high-voltage transformer coupled to the filament transformer and the electron source, and an alternating current (AC) current limiter coupled in series with the primary side or the secondary side of the filament transformer. The AC current limiter includes a diode bridge and a current-limiting device in the diode bridge. | 09-18-2014 |
20140286476 | SYSTEMS AND METHODS FOR HIGH-SPEED RADIOGRAPHY WITH HIGH RESOLUTION IMAGING OF LARGE-AREA FIELDS - The present invention proposes a high speed radiographic system for use with megavolt linear-accelerator pulsed x-ray sources to produce video images of large-area fields. A linear accelerator is positioned above a field of view. X-ray photons are directed through an object of interest traveling and/or colliding within the field of view. A large area scintillator system, either truly continuous or in large continuous adjacent pieces, converts the x-ray photons that pass through the object into visible light, and an arrangement of cameras, focused at that plane, where each camera sees a sub-area of the entire scintillator, and these sub-areas overlap somewhat to cover the entire scintillator. The resulting images generated in each camera are synchronized to produce one contiguous, synchronized stream of images. | 09-25-2014 |
20140294147 | SYSTEMS AND METHODS FOR MULTI-VIEW IMAGING AND TOMOGRAPHY - Radiation scanning systems providing multiple views of an object in different planes and a reconstruction algorithm for reconstructing quasi-three-dimensional images from a limited number of views. A system may include bend magnets to direct accelerated charged particles to multiple targets in different viewing locations. Another system collimates radiation generated by a plurality of radiation sources into multiple beams for scanning an object at multiple angles. The object may be a cargo container, for example. The reconstruction algorithm uses an optimization algorithm and imaging and feasibility models to reconstruct quasi-three-dimensional images from the limited number of views. | 10-02-2014 |