Abstract: A tool for cutting a tie wrap bound about a wire bundle. The tool includes a body portion having a generally disc-shaped cutter and cutting edge. A shield covers one side of the cutter and defines first and second shield slots in communication with the cutting edge. A housing pivotally connected to the body portion covers the other side of the cutter and defines first and second housing slots that communicate with the cutting edge. The housing pivots between first, second, and third positions. In the first position, the first housing slot communicates with the first shield slot to expose the cutting edge for cutting purposes. In the second position, the first housing slot is out of communication with the first shield slot, thereby covering the cutting edge. And, in the third position, the second housing slot communicates with the second shield slot to expose the cutting edge.

Abstract: A tool for cutting a tie wrap bound about a wire bundle. The tool includes a body portion having a generally disc-shaped cutter and cutting edge. A shield covers one side of the cutter and defines first and second shield slots in communication with the cutting edge. A housing pivotally connected to the body portion covers the other side of the cutter and defines first and second housing slots that communicate with the cutting edge. The housing pivots between first, second, and third positions. In the first position, the first housing slot communicates with the first shield slot to expose the cutting edge for cutting purposes. In the second position, the first housing slot is out of communication with the first shield slot, thereby covering the cutting edge. And, in the third position, the second housing slot communicates with the second shield slot to expose the cutting edge.

Abstract: A tool for cutting a tie wrap bound about a wire bundle. The tool includes a body portion having a generally disc-shaped cutter and cutting edge. A shield covers one side of the cutter and defines first and second shield slots in communication with the cutting edge. A housing pivotally connected to the body portion covers the other side of the cutter and defines first and second housing slots that communicate with the cutting edge. The housing pivots between first, second, and third positions. In the first position, the first housing slot communicates with the first shield slot to expose the cutting edge for cutting purposes. In the second position, the first housing slot is out of communication with the first shield slot, thereby covering the cutting edge. And, in the third position, the second housing slot communicates with the second shield slot to expose the cutting edge.

Abstract: A tool for cutting a tie wrap bound about a wire bundle. The tool includes a body portion having a generally disc-shaped cutter and cutting edge. A shield covers one side of the cutter and defines first and second shield slots in communication with the cutting edge. A housing pivotally connected to the body portion covers the other side of the cutter and defines first and second housing slots that communicate with the cutting edge. The housing pivots between first, second, and third positions. In the first position, the first housing slot communicates with the first shield slot to expose the cutting edge for cutting purposes. In the second position, the first housing slot is out of communication with the first shield slot, thereby covering the cutting edge. And, in the third position, the second housing slot communicates with the second shield slot to expose the cutting edge.

Abstract: An arc radiotherapy and imaging system is provided which includes a first radiation source and a second radiation source. The first radiation source is suitable for treating a region of a patient, and the second radiation source is suitable for imaging the region of the patient. A control is also provided for automatically adjusting system operation, according to a defined schedule, between treating the region of the patient using the first radiation source and imaging the region of the patient using the second radiation source, thereby facilitating both treating and imaging of the region of the patient.

Abstract: A radiation detector includes a conversion element that converts an incoming radiation beam into electrical signals, which in turn can be used to generate data about the radiation beam. The conversion element may include, for example, a scintillator that converts the radiation beam into light, and a sensor that generates the signals in response to the light. The conversion element can be used in different schemes or data collection modes. For instance, the conversion element can be oriented normal to the radiation beam or transverse to the radiation beam. In either of these orientations, for example, the detector can be used in an integrating mode or in a counting mode.

Abstract: A radiation detector includes a conversion element that converts an incoming radiation beam into electrical signals, which in turn can be used to generate data about the radiation beam. The conversion element may include, for example, a scintillator that converts the radiation beam into light, and a sensor that generates the signals in response to the light. The conversion element can be used in different schemes or data collection modes. For instance, the conversion element can be oriented normal to the radiation beam or transverse to the radiation beam. In either of these orientations, for example, the detector can be used in an integrating mode or in a counting mode.

Abstract: An arc radiotherapy and imaging system is provided which includes a first radiation source and a second radiation source. The first radiation source is suitable for treating a region of a patient, and the second radiation source is suitable for imaging the region of the patient. A control is also provided for automatically adjusting system operation, according to a defined schedule, between treating the region of the patient using the first radiation source and imaging the region of the patient using the second radiation source, thereby facilitating both treating and imaging of the region of the patient.

Abstract: Disclosed are systems, methods, and computer program products that generate estimates of errors caused by extraneous radiation in tomographic systems, such as cone-beam computerized tomography (CBCT) systems, fluoroscopic tomography systems, radiographic tomography systems, laminar tomography imaging systems, and the like. In one group of inventions, spatial errors are estimated from projection data collected where a known spatial perturbation has been introduced into radiation intensity of the source. In another group of inventions, temporal errors are estimated from a sequence of projections where a known perturbation in the radiation intensity of the source for different projections has been introduced.

Abstract: Disclosed are systems, methods, and computer program products that generate estimates of errors caused by extraneous radiation in tomographic systems, such as cone-beam computerized tomography (CBCT) systems, fluoroscopic tomography systems, radiographic tomography systems, laminar tomography imaging systems, and the like. In one group of inventions, spatial errors are estimated from projection data collected where a known spatial perturbation has been introduced into radiation intensity of the source. In another group of inventions, temporal errors are estimated from a sequence of projections where a known perturbation in the radiation intensity of the source for different projections has been introduced.

Abstract: For a floor clearing bucket, blade or other component of a machine, a guard including a rigid attachment device and elastomeric wear pad assembly has a bolt or stud fastener mounted sideways to facilitate spacing fasteners to match pre-existing, guard-mounting holes in the component for attaching the guard to the component.

Abstract: Devices and methods for implementing selective, or asymmetric, attenuation of an x-ray beam. In one example, a filter is provided that is substantially in the form of a wedge where some portions of the filter are thicker, and thus provide greater attenuation, than other, thinner portions of the filter. The filter is situated between the target surface of the anode and the x-ray subject so that x-rays generated by the target pass through the filter before reaching the x-ray subject. Specifically, the filter is oriented so that the thicker portion of the filter receives the higher intensity portion of the x-ray beam, while the thinner portion of the filter receives the relatively lower intensity portion of the x-ray beam. Thus, the gain profile of the x-ray beam is flattened so that the intensity, or flux, of the x-ray beam is relatively uniform throughout a substantial portion of the beam profile.

Abstract: Disclosed are imaging systems, methods, and computer program products that generate estimates of scattered radiation in tomographic imaging systems, such as cone-beam computerized tomography (CBCT) systems, and the like. In an exemplary embodiment, a first group of projections is taken of an object with the radiation covering a wide band of the object, and a second group of projections is taken of the object with the radiation covering a narrower band of the object. The projections of the second group cover less of the object, but have less scattered radiation. The scattered radiation within the narrower band may be estimated from differences between projections from the first and second groups, or from representations thereof.

Abstract: Disclosed are imaging systems, methods, and computer program products that generate estimates of scattered radiation in tomographic imaging systems, such as cone-beam computerized tomography (CBCT) systems, and the like. In an exemplary embodiment, a first group of projections is taken of an object with the radiation covering a wide band of the object, and a second group of projections is taken of the object with the radiation covering a narrower band of the object. The projections of the second group cover less of the object, but have less scattered radiation. The scattered radiation within the narrower band may be estimated from differences between projections from the first and second groups, or from representations thereof.

Abstract: Devices and methods for implementing selective, or asymmetric, attenuation of an x-ray beam. In one example, a filter is provided that is substantially in the form of a wedge where some portions of the filter are thicker, and thus provide greater attenuation, than other, thinner portions of the filter. The filter is situated between the target surface of the anode and the x-ray subject so that x-rays generated by the target pass through the filter before reaching the x-ray subject. Specifically, the filter is oriented so that the thicker portion of the filter receives the higher intensity portion of the x-ray beam, while the thinner portion of the filter receives the relatively lower intensity portion of the x-ray beam. Thus, the gain profile of the x-ray beam is flattened so that the intensity, or flux, of the x-ray beam is relatively uniform throughout a substantial portion of the beam profile.

Abstract: For a floor clearing bucket, blade or other component of a machine, a guard including a rigid attachment device and elastomeric wear pad assembly has a bolt or stud fastener mounted sideways to facilitate spacing fasteners to match pre-existing, guard-mounting holes in the component for attaching the guard to the component.