Abstract: A system and method for ensuring safe delivery of items to an event, such as a conference or trade show. The system uses a controlled-access website or app and a program with a database operated by a security coordinator. All prospective attendees are vetted, and after being verified as bona fide attendees who qualify as a reliable exhibitor/shipper, are given access to the database for the purpose of obtaining (by download) a particularized set of coded labels to be applied to a particular item to be shipped. The coded labels are then printed, applied to the items to be shipped and sent to a staging location for screening. At the staging location, the security coordinator scans all coded labels of shipped items when they arrive, and the program compares the scanned data with the data in the database to see if the shipped items are associated with a reliable exhibitor/shipper.

Abstract: A system and method for ensuring safe delivery of items to an event, such as a conference or trade show. The system uses a controlled-access website or app and a program with a database operated by a security coordinator. All prospective attendees are vetted, and after being verified as bona fide attendees who qualify as a reliable exhibitor/shipper, are given access to the database for the purpose of obtaining (by download) a particularized set of coded labels to be applied to a particular item to be shipped. The coded labels are then printed, applied to the items to be shipped and sent to a staging location for screening. At the staging location, the security coordinator scans all coded labels of shipped items when they arrive, and the program compares the scanned data with the data in the database to see if the shipped items are associated with a reliable exhibitor/shipper.

Abstract: A system and method for ensuring safe delivery of items to an event, such as a conference or trade show. The system uses a controlled-access website or app and a program with a database operated by a security coordinator. All prospective attendees are vetted, and after being verified as bona fide attendees who qualify as a reliable exhibitor/shipper, are given access to the database for the purpose of obtaining (by download) a particularized set of coded labels to be applied to a particular item to be shipped. The coded labels are then printed, applied to the items to be shipped and sent to a staging location for screening. At the staging location, the security coordinator scans all coded labels of shipped items when they arrive, and the program compares the scanned data with the data in the database to see if the shipped items are associated with a reliable exhibitor/shipper.

Abstract: An imaging system includes an x-ray assembly having one or more x-ray sources configured to be energized at multiple positions. A control program energizes the one or more x-ray sources in a programmed sequence and controls the timing of the sequence.

Abstract: An imaging method, accesses a set of low-energy projection images and performs a low-energy reconstruction using the low-energy projection images. A synthesized intermediate low-energy projection image is generated. A high-energy reconstruction is performed using a set of high-energy projection images. A synthesized intermediate high-energy projection image is generated. A dual-energy reconstruction is performed using at least one low-energy projection image, the synthesized intermediate low-energy projection image, at least one high-energy projection image, and the synthesized intermediate high-energy projection image.

Abstract: An apparatus having an x-ray source and an x-ray detector configured to be rotated about a standing patient to capture and store a plurality of radiographic images of the patient during the rotation. A portable enclosure surrounds the source, the detector and the patient.

Abstract: A computer implemented method for reconstructing a 3-D volume image using a radiographic imaging system having one or more x-ray sources and a digital detector. A plurality of radiographic images of a subject at various angles are captured in the digital detector. Image data in two or more pixels of the detector that are adjacent to each other in a row direction or a column direction are combined, while pixels adjacent in the other direction are not combined.

Abstract: A method for geometric calibration of a radiography apparatus disposes at least one radio-opaque marker in the field of view of the radiography apparatus. A series of tomosynthesis projection images of patient anatomy is acquired from the detector with the x-ray source at different positions along a scan path. For at least three projection images showing the position of the radio-opaque marker, the spatial and angular geometry of the x-ray source and detector are calculated according to the positions of the marker. A tomosynthesis image is reconstructed according to the calculated geometry. A rendering of the reconstructed image is displayed.

Abstract: A method for geometric calibration of a radiography apparatus acquires tomosynthesis projection images of patient anatomy from a detector and an x-ray source translated along a scan path. An epipolar geometry is calculated according to the relative position of the detector to the scan path by estimating a direction for epipolar lines that extend along an image plane that includes the detector. A region of interest of the patient anatomy that is a portion of each projection image and is fully included within each projection image in the series is defined. A consistency metric is calculated for estimated epipolar lines extending within the ROI. The method iteratively adjusts the epipolar line estimation until the consistency metric indicates accuracy to within a predetermined threshold. A portion of a tomosynthesis volume is reconstructed and displayed.

Abstract: A method for geometric calibration of a mobile radiography apparatus, executed at least in part by a computer, acquires a series of tomosynthesis projection images of a patient positioned between an x-ray source of the mobile radiography apparatus and a detector that is positionally uncoupled from the x-ray source. A vector field is generated having a first set of vectors indicative of feature movement between a first acquired projection image and a second acquired projection image. The generated vector field is associated with an epipolar geometry according to an optimization of an energy relationship between an epipolar model and the generated vector field values. The mobile radiography apparatus is calibrated according to the associated model epipolar geometry. At least a portion of the tomosynthesis image is reconstructed and displayed.

Abstract: A method accepts patient-specific data for imaging a patient extremity on a cone beam computed tomography apparatus and generates and displays a set of acquisition parameters and dose indication for 2-D projection image capture of the extremity. The generated set of acquisition parameters and dose indication are updated according to one or more operator entered instructions. A set of 2-D projection images of a 3-D volume is acquired according to the updated set of acquisition parameters. The volume is reconstructed according to the acquired set of 2-D projection images.

Abstract: A method for geometric calibration of a radiography apparatus acquires tomosynthesis projection images of patient anatomy from a detector and an x-ray source translated along a scan path. An epipolar geometry is calculated according to the relative position of the detector to the scan path by estimating a direction for epipolar lines that extend along an image plane that includes the detector. A region of interest of the patient anatomy that is a portion of each projection image and is fully included within each projection image in the series is defined. A consistency metric is calculated for estimated epipolar lines extending within the ROI. The method iteratively adjusts the epipolar line estimation until the consistency metric indicates accuracy to within a predetermined threshold. A portion of a tomosynthesis volume is reconstructed and displayed.

Abstract: A method for geometric calibration of a radiography apparatus disposes at least one radio-opaque marker in the field of view of the radiography apparatus. A series of tomosynthesis projection images of patient anatomy is acquired from the detector with the x-ray source at different positions along a scan path. For at least three projection images showing the position of the radio-opaque marker, the spatial and angular geometry of the x-ray source and detector are calculated according to the positions of the marker. A tomosynthesis image is reconstructed according to the calculated geometry. A rendering of the reconstructed image is displayed.

Abstract: An imaging system includes an x-ray assembly having one or more x-ray sources configured to be energized at multiple positions. A control program energizes the one or more x-ray sources in a programmed sequence and controls the timing of the sequence.

Abstract: A method for multi-dimensional image processing obtains a multi-dimensional image having a plurality of data elements, each data element having a corresponding data value. The method forms a reduced noise image by repeated iterations of a process that adjusts the data value for one or more data elements p of the obtained image by: for each data element k in a group of data elements in the image, calculating a weighting factor for the data element k as a function of the difference between an estimated data value for data element p and the corresponding data value of data element k, updating the estimated data value for the data element p according to the combined calculated weighting factors and the data value of the data element k; and displaying, storing, or transmitting the reduced noise image.

Abstract: An imaging system includes an x-ray assembly having one or more x-ray sources configured to be energized at multiple positions. A control program energizes the one or more x-ray sources in a programmed sequence and controls the timing of the sequence.

Abstract: A method for tomosynthesis volume reconstruction acquires at least a prior projection image of the subject at a first angle and a subsequent projection image of the subject at a second angle. A synthetic image corresponding to an intermediate angle between the first and second angle is generated by a repeated process of relating an area of the synthetic image to a prior patch on the prior projection image and to a subsequent patch on the subsequent projection image according to a bidirectional spatial similarity metric, wherein the prior patch and subsequent patch have n×m pixels; and combining image data from the prior patch and the subsequent patch to form a portion of the synthetic image. The generated synthetic image is displayed, stored, processed, or transmitted.

Abstract: A method for geometric calibration of a mobile radiography apparatus, executed at least in part by a computer, acquires a series of tomosynthesis projection images of a patient positioned between an x-ray source of the mobile radiography apparatus and a detector that is positionally uncoupled from the x-ray source. A vector field is generated having a first set of vectors indicative of feature movement between a first acquired projection image and a second acquired projection image. The generated vector field is associated with an epipolar geometry according to an optimization of an energy relationship between an epipolar model and the generated vector field values. The mobile radiography apparatus is calibrated according to the associated model epipolar geometry. At least a portion of the tomosynthesis image is reconstructed and displayed.

Abstract: A method for imaging a subject obtains a first set of acquired projection images of a subject volume, wherein each projection image in the first set has a corresponding acquisition angle and forms an initial reconstructed volume image. A second set of synthetic projection images is generated according to processing of the acquired projection images and combined with the first set to form a combined set of projection images. The method augments the initial reconstructed image to form an improved reconstructed image by at least a first iteration of an iterative reconstruction process using the initial reconstructed image with the combined set of acquired and synthetic projection images and at least a subsequent iteration of the iterative reconstruction process using the first set of acquired projection images and fewer than, or none of, the second set of synthetic projection images. The improved reconstruction image is rendered on a display.

Abstract: An imaging method, accesses cone beam computed tomography (CBCT) data and displays, on a display monitor, at least one view of the CBCT data. The method provides an interface for a user to indicate a tomosynthesis reconstruction plane on the displayed view of the CBCT data; and displays a tomosynthesis image on the display monitor according to the indicated tomosynthesis reconstruction plane.