Abstract: An example method to configure a radiography system having a radiation emitter and a radiation detector involves: analyzing, using processing circuitry, a reference image captured using a first value of a first power parameter for the radiation emitter to determine a value of a focal spot size for the radiation emitter; based on a determined relationship between the first value of the first power parameter and the value of the focal spot size, output an indication of whether a selected value of the first power parameter results in a value of an unsharpness parameter satisfying a threshold unsharpness value; and control the radiography system using the selected power parameter to perform a radiography process to obtain one or more radiographic images that satisfy the threshold unsharpness value.

Abstract: An example adjustable collimator includes a housing having an aperture through which radiation is to be directed from an inlet to an outlet of the housing, a first shutter and a second shutter within the housing, a first link coupled to the first shutter, and a first yoke coupled to the housing at a pivot point and configured to pivot with respect to the housing. The first yoke may be configured to reduce an effective width of the aperture by moving the first shutter toward the second shutter via the first link when the first yoke is rotated in a first direction.

Abstract: An example adjustable collimator includes a housing having an aperture through which radiation is to be directed from an inlet to an outlet of the housing, a first shutter and a second shutter within the housing, a first link coupled to the first shutter, and a first yoke coupled to the housing at a pivot point and configured to pivot with respect to the housing. The first yoke may be configured to reduce an effective width of the aperture by moving the first shutter toward the second shutter via the first link when the first yoke is rotated in a first direction.

Abstract: For each respective first-phase rotational position of a set of first-phase rotational positions, an imaging system may generate a respective first-phase image. The imaging system may determine, based on an identified region of interest in the respective first-phase image, collimator blade positions for the respective first-phase rotational position. For each respective second-phase rotational position of a set of second-phase rotational positions, the imaging system may determine, based on the collimator blade positions for the first-phase rotational positions, collimator blade positions for the respective second-phase rotational position. The imaging system may generate a respective second-phase image in a second series of images while the test object is at the respective second-phase rotational position and while the collimator blades are at the collimator blade positions for the respective second-phase rotational position.

Abstract: An apparatus (112) provides for tuning of an effective focal spot size of a radiation source. The apparatus may comprise a plurality of inter-channel structures (214) defining a plurality of channels (216) passing through the apparatus from a first surface (218) to a second surface (220). The inter-channel structures comprise a first substance and the channels contains a second substance. The first substance attenuates radiation more than the second substance. The inter-channel structures may define the channels such that lines passing through the channels converge at a location on or near the surface of a focal spot (212).

Abstract: For each respective first-phase rotational position of a set of first-phase rotational positions, an imaging system may generate a respective first-phase image. The imaging system may determine, based on an identified region of interest in the respective first-phase image, collimator blade positions for the respective first-phase rotational position. For each respective second-phase rotational position of a set of second-phase rotational positions, the imaging system may determine, based on the collimator blade positions for the first-phase rotational positions, collimator blade positions for the respective second-phase rotational position. The imaging system may generate a respective second-phase image in a second series of images while the test object is at the respective second-phase rotational position and while the collimator blades are at the collimator blade positions for the respective second-phase rotational position.

Abstract: An apparatus (112) provides for tuning of an effective focal spot size of a radiation source. The apparatus may comprise a plurality of inter-channel structures (214) defining a plurality of channels (216) passing through the apparatus from a first surface (218) to a second surface (220). The inter-channel structures comprise a first substance and the channels contains a second substance. The first substance attenuates radiation more than the second substance. The inter-channel structures may define the channels such that lines passing through the channels converge at a location on or near the surface of a focal spot (212).

Abstract: An air data probe (10) such as a pitot probe, pitot-static probe, or total air temperature probe incorporates heaters (42) within the wall (30) of the device. The heater (42) extends from the base (12) of the probe (10) to the tip (18) of the probe (10). In a preferred embodiment, the heater (42) is a wire heater that extends in the wall (30) of the probe (10) from the base (12) to the tip (18), and surrounds a sampling chamber (24) in the probe (10) in a spiral pattern.