Abstract: Radiographic imaging techniques include the use of an exposure sequence having a plurality of specimen exposure windows. The plurality of specimen exposure windows have a total exposure time period that satisfies a desired exposure time. The plurality of exposure frames resulting from the plurality of specimen exposure windows are summed to form an output frame. The output frame is provided as output.

Abstract: While performing a tomosynthesis procedure, the breast of a patient is compressed between two compression elements to create an imaging condition. Foam is secured to the rigid substrate of a one of the compression elements. The patient's chest wall is aligned with the leading edge surface of the foam. The inner side of the breast is disposed proximate the lateral edge surface of the foam and the outer side of the breast is disposed proximate the outer lateral edge surface of the foam. A mid-plane is disposed between the inner and outer lateral edge surfaces of the foam. An interface connects a leading edge surface of the foam and compressive surfaces. A portion of the leading edge surface which is aligned with the mid-plane is incompletely compressed.

Abstract: Systems and methods for improving radiographic scanning. In an example, the technology relates to a system for performing radiographic scanning. The system includes a photon source configured to emit photons. The system also includes a photon counting detector for detecting photons emitted from the photon source after passing through a target. The photon counting detector comprising first pixels having a first size and second pixels having a second size, and the first size is greater than the second size.

Abstract: While performing a tomosynthesis procedure, the breast of a patient is compressed between two compression elements to create an imaging condition. Foam is secured to the rigid substrate of a one of the compression elements. The patient's chest wall is aligned with the leading edge surface of the foam. The inner side of the breast is disposed proximate the lateral edge surface of the foam and the outer side of the breast is disposed proximate the outer lateral edge surface of the foam. A mid-plane is disposed between the inner and outer lateral edge surfaces of the foam. An interface connects a leading edge surface of the foam and compressive surfaces. A portion of the leading edge surface which is aligned with the mid-plane is incompletely compressed.

Abstract: Methods and devices for tracking an x-ray tube focal spot position are described. As successive images are captured by an image capturing system that includes the x-ray tube, the focal spot may change position. To track the change, one or more artificial targets may be arranged relative to the image capturing system such that an initial image is received that includes the artificial targets at a first position in the initial image. A gain map may be generated based on the initial image, and applied to a subsequent image received that also includes the artificial targets to generate a normalized subsequent image. A shift of the artificial targets from the first position in the initial image to a second position in the normalized subsequent image may be identified, where the shift corresponds to the focal spot's position change. Mathematical and/or physical adjustments may be made to correct for the change.

Abstract: While performing a tomosynthesis procedure, the breast of a patient is compressed between two compression elements to create an imaging condition. Foam is secured to the rigid substrate of a one of the compression elements. The patient's chest wall is aligned with the leading edge surface of the foam. The inner side of the breast is disposed proximate the lateral edge surface of the foam and the outer side of the breast is disposed proximate the outer lateral edge surface of the foam. A mid-plane is disposed between the inner and outer lateral edge surfaces of the foam. An interface connects a leading edge surface of the foam and compressive surfaces. A portion of the leading edge surface which is aligned with the mid-plane is incompletely compressed.

Abstract: Radiographic imaging techniques include the use of an exposure sequence having a plurality of specimen exposure windows. The plurality of specimen exposure windows have a total exposure time period that satisfies a desired exposure time. The plurality of exposure frames resulting from the plurality of specimen exposure windows are summed to form an output frame. The output frame is provided as output.

Abstract: Methods and devices for tracking an x-ray tube focal spot position are described. As successive images are captured by an image capturing system that includes the x-ray tube, the focal spot may change position. To track the change, one or more artificial targets may be arranged relative to the image capturing system such that an initial image is received that includes the artificial targets at a first position in the initial image. A gain map may be generated based on the initial image, and applied to a subsequent image received that also includes the artificial targets to generate a normalized subsequent image. A shift of the artificial targets from the first position in the initial image to a second position in the normalized subsequent image may be identified, where the shift corresponds to the focal spot's position change. Mathematical and/or physical adjustments may be made to correct for the change.

Abstract: While performing a tomosynthesis procedure, the breast of a patient is compressed between two compression elements to create an imaging condition. Foam is secured to the rigid substrate of a one of the compression elements. The patient's chest wall is aligned with the leading edge surface of the foam. The inner side of the breast is disposed proximate the lateral edge surface of the foam and the outer side of the breast is disposed proximate the outer lateral edge surface of the foam. A mid-plane is disposed between the inner and outer lateral edge surfaces of the foam. An interface connects a leading edge surface of the foam and compressive surfaces. A portion of the leading edge surface which is aligned with the mid-plane is incompletely compressed.

Abstract: Methods and systems for imaging anatomical portions of a patient. A method includes moving a radiation source and a detector at least partially around a longitudinal axis of the patient, emitting radiation at a first energy level at a first angle around a longitudinal axis of the patient, wherein the first energy level is a predetermined energy level for a first anatomical target, detecting the radiation emitted at the first energy level, emitting radiation at a second energy level at second angle around the longitudinal axis of the patient, wherein the second energy level is a predetermined energy level for a second anatomical target; and detecting the radiation emitted at the second energy level. The method may be performed with a standing CT machine.

Abstract: Methods and systems for imaging anatomical portions of a patient. A method includes moving a radiation source and a detector at least partially around a longitudinal axis of the patient, emitting radiation at a first energy level at a first angle around a longitudinal axis of the patient, wherein the first energy level is a predetermined energy level for a first anatomical target, detecting the radiation emitted at the first energy level, emitting radiation at a second energy level at second angle around the longitudinal axis of the patient, wherein the second energy level is a predetermined energy level for a second anatomical target; and detecting the radiation emitted at the second energy level. The method may be performed with a standing CT machine.

Abstract: A process and related apparatus for reducing noise due to addressing and switching the detection elements in a radiation detecting panel comprising an array of detection elements. Noise reduction is achieved in two steps, first by the use of a sample and hold circuit which compares a first signal indicative of switching noise held in a sample and hold circuit with a second signal which includes the switching noise and the desired data signal. The second step includes further reducing noise in the output signal present during readout of the detection elements by comparing the signal from certain elements in the array which have not been exposed to radiation with the signal from the exposed elements in the array to obtain an output with significantly reduced noise.