Abstract: An apparatus for calibrating an X-ray imaging system including: an X-ray source including a plurality of focal spots; a detector panel; and at least one planar structure including markers placed at pre-determined positions on the at least one planar structure, the at least one planar structure configured to estimate a position of the plurality of focal spots with respect to the detector panel.

Abstract: Apparatus and methods to deliver kV X-rays toward a target lesion within a body including: a treatment anode configured to receive electron beams and output the kV X-rays through a specially-designed collimator; an electron beam source configured to generate and direct the electron beams toward the treatment anode; and at least one magnet configured to steer and scan the electron beams along the treatment anode to prevent overheating of the treatment anode. The components are mounted on a gantry that rotates about the target lesion to distribute the dose delivered over a large volume of healthy tissue while substantially maximizing the dose delivered to the target lesion.

Abstract: A system for tracking tumors during radiotherapy for interleaving treatment pulses with imaging pulses is disclosed. The system includes a plurality of multisource scanning eBeam X-ray tubes, each having multiple focal spots. The X-ray tubes are configured to emit X-rays in a plurality of different locations on a target by sequentially emitting the X-rays to the focal spots in the different focal spots. This is done such that the X-rays can be emitted to the plurality of different locations without substantially moving the X-ray tube or the target. The system further includes multiple imager panels configured to act as targets and configured to receive the X-rays from the focal spots of the X-ray tube. The system further includes a tomosynthesis reconstruction module configured to process outputs from the imager panels to construct a unified three-dimensional image that takes information from each of the different imager panels.

Abstract: An apparatus to perform a CT scan of an object of interest with a reduced radiation dose including: an X-ray source configured to circularly rotate about the object of interest, the X-ray source configured to generate an X-ray beam; a detector assembly configured to move in tandem with the X-ray source on the opposite side of the X-ray source with respect to the object of interest, wherein the detector assembly is fixed with respect to the X-ray source and configured to detect the X-ray beam on a side of the object of interest opposite to the X-ray source after the X-ray beam passes through the object of interest; a 6-DOF collimator coupled to the X-ray source and comprising a plate with a hole disposed within the plate, wherein an aperture of the X-ray beam is dynamically adjusted by controlling a 3-D pose of the plate.

Abstract: Automatic threat detection of volumetric computed tomography (CT) data, including: extracting at least one 3-D object from the volumetric CT data; constructing a feature vector for each of the at least one 3-D objects; and classifying each 3-D object as one of a threat or benign object using the feature vector and a set of truth threat and benign objects.

Abstract: An apparatus for calibrating an X-ray imaging system including: an X-ray source including a plurality of focal spots; a detector panel; and at least one planar structure including markers placed at pre-determined positions on the at least one planar structure, the at least one planar structure configured to estimate a position of the plurality of focal spots with respect to the detector panel.

Abstract: Apparatus and methods to deliver kV X-rays toward a target lesion within a body including: a treatment anode configured to receive electron beams and output the kV X-rays through a specially-designed collimator; an electron beam source configured to generate and direct the electron beams toward the treatment anode; and at least one magnet configured to steer and scan the electron beams along the treatment anode to prevent overheating of the treatment anode. The components are mounted on a gantry that rotates about the target lesion to distribute the dose delivered over a large volume of healthy tissue while substantially maximizing the dose delivered to the target lesion.

Abstract: An apparatus to perform a CT scan of an object of interest with a reduced radiation dose including: an X-ray source configured to circularly rotate about the object of interest, the X-ray source configured to generate an X-ray beam; a detector assembly configured to move in tandem with the X-ray source on the opposite side of the X-ray source with respect to the object of interest, wherein the detector assembly is fixed with respect to the X-ray source and configured to detect the X-ray beam on a side of the object of interest opposite to the X-ray source after the X-ray beam passes through the object of interest; a 6-DOF collimator coupled to the X-ray source and comprising a plate with a hole disposed within the plate, wherein an aperture of the X-ray beam is dynamically adjusted by controlling a 3-D pose of the plate.

Abstract: A computed tomography (CT) apparatus to perform a CT scan with a reduced radiation, including: an X-ray source to direct a cone beam of X-rays toward a detector assembly with an object of interest situated between the source and the detector assembly; a multi-leaf collimator fixed with respect to the X-ray source and configured to dynamically limit the cone beam of X-rays directed toward the object of interest, the multi-leaf collimator comprising a plurality of leaflets to block impinging cone beam of X-rays; and the detector assembly to detect the directed X-ray beam on a side opposite to the X-ray source after the X-ray beam with the reduced solid angle passes through the object of interest.

Abstract: A system for tracking tumors during radiotherapy by interleaving treatment pulses with imaging pulses is disclosed. The system includes a multisource scanning eBeam X-ray tube having a plurality of focal spots. The X-ray tube is configured to emit X-rays to a plurality of different locations on a target by sequentially emitting the X-rays to the focal spots in the plurality of focal spots. This is done such that the X-rays can be emitted to the plurality of different locations on the target without substantially moving the X-ray tube or the target. The system further includes an imager panel configured to act as the target and configured to receive the X-rays from the focal spots of the X-ray tube. The system further includes a tomosynthesis reconstruction module configured to process output from the imager panel to construct an image.

Abstract: Automatic threat detection of volumetric computed tomography (CT) data, including: extracting at least one 3-D object from the volumetric CT data; constructing a feature vector for each of the at least one 3-D objects; and classifying each 3-D object as one of a threat or benign object using the feature vector and a set of truth threat and benign objects.

Abstract: A system for tracking tumors during radiotherapy for interleaving treatment pulses with imaging pulses is disclosed. The system includes a plurality of multisource scanning eBeam X-ray tubes, each having multiple focal spots. The X-ray tubes are configured to emit X-rays in a plurality of different locations on a target by sequentially emitting the X-rays to the focal spots in the different focal spots. This is done such that the X-rays can be emitted to the plurality of different locations without substantially moving the X-ray tube or the target. The system further includes multiple imager panels configured to act as targets and configured to receive the X-rays from the focal spots of the X-ray tube. The system further includes a tomosynthesis reconstruction module configured to process outputs from the imager panels to construct a unified three-dimensional image that takes information from each of the different imager panels.

Abstract: A computed tomography (CT) apparatus including: an X-ray source configured to direct X-rays toward a detector assembly; a dynamic beam collimator fixed in space and configured to dynamically limit an X-ray beam directed toward an object of interest, the dynamic beam collimator including a plurality of leaflets to block a cone beam of X-rays impinging upon the dynamic beam collimator, wherein a subset of the plurality of leaflets opens and closes to block or allow a portion of the cone beam of X-rays to reduce or increase a solid angle of the cone beam, wherein the cone beam of X-rays with the reduced solid angle is directed toward a predetermined portion of the object of interest; and the detector assembly configured to detect the directed cone beam of X-rays on a side opposite to the X-ray source.

Abstract: A computed tomography (CT) apparatus to perform a CT scan with a reduced radiation, including: an X-ray source to direct a cone beam of X-rays toward a detector assembly with an object of interest situated between the source and the detector assembly; a multi-leaf collimator fixed with respect to the X-ray source and configured to dynamically limit the cone beam of X-rays directed toward the object of interest, the multi-leaf collimator comprising a plurality of leaflets to block impinging cone beam of X-rays; and the detector assembly to detect the directed X-ray beam on a side opposite to the X-ray source after the X-ray beam with the reduced solid angle passes through the object of interest.

Abstract: Extracting objects from a computed tomography (CT) image, including: sequentially applying segmentation and carving on volumetric data of the objects in the CT image; and splitting and merging the segmented objects based on homogeneity of the objects in the CT image.

Abstract: Integrating a plurality of security imaging units for an airport security checkpoint into networked common workstations, including: scanning items with a first security imaging unit at a primary inspection area, wherein the first security imaging unit is coupled to a first networked common workstation; displaying the scanned items as a displayed image on a display of the first networked common workstation located at the primary inspection area; re-scanning the items with a second security imaging unit coupled to the first networked common workstation when a possible concealment is observed, wherein the first networked common workstation includes a conversion unit which converts outputs of the first and second security imaging units into a common format for the displayed image; routing the displayed image to a second networked common workstation located at a secondary inspection area when the possible concealment is observed, wherein the secondary inspection area is remote from the primary inspection area.

Abstract: Dual-energy backscatter x-ray shoe scanning including: pre-processing input image information received from a shoe scanning device and image calibration data received from a database to output an atomic number image; detecting at least one suspect region based off the atomic number image; identifying the at least one detected suspect region as an object class using a changeable list of attributes; and classifying the object class according to a changeable list of categories.

Abstract: A portable backscatter advanced imaging technology scanner with automated threat or target recognition including: a floor assembly having a cantilever drive assembly for rotating the floor assembly, the floor assembly being able to be partitioned into multiple parts for reassembly; at least one x-ray tube oriented towards selected sides of a test subject; a detector assembly oriented on the circumference of the floor assembly, the detector assembly being able to partitioned into multiple parts for reassembly; a storage unit to store images from detected scattered photons on the detector assembly; and a processing unit to detect, identify and classify concealed objects on the test subject.

Abstract: A system for tracking tumors during radiotherapy for interleaving treatment pulses with imaging pulses is disclosed. The system includes a multisource scanning eBeam X-ray tube having a plurality of focal spots. The X-ray tube is configured to emit X-rays in a plurality of different locations on a target by sequentially emitting the X-rays to the focal spots in the plurality of focal spots. This is done such that the X-rays can be emitted to the plurality of different locations without substantially moving the X-ray tube or the target. The system further includes an imager panel configured to act as the target and configured to receive the X-rays from the focal spots of the X-ray tube. The system further includes a tomosynthesis reconstruction module configured to process output from the imager panel to construct an image.

Abstract: A computed tomography (CT) apparatus including: an X-ray source configured to direct X-rays toward a detector assembly; a dynamic beam collimator fixed in space and configured to dynamically limit an X-ray beam directed toward an object of interest, the dynamic beam collimator including a plurality of leaflets to block a cone beam of X-rays impinging upon the dynamic beam collimator, wherein a subset of the plurality of leaflets opens and closes to block or allow a portion of the cone beam of X-rays to reduce or increase a solid angle of the cone beam, wherein the cone beam of X-rays with the reduced solid angle is directed toward a predetermined portion of the object of interest; and the detector assembly configured to detect the directed cone beam of X-rays on a side opposite to the X-ray source.