Abstract:
A storage phosphor panel can include an extruded inorganic storage phosphor layer including a thermoplastic polymer and an inorganic storage phosphor material, where the extruded inorganic storage phosphor panel has an image quality comparable to that of a traditional solvent coated inorganic storage phosphor screen. Further disclosed are certain exemplary method and/or apparatus embodiments that can provide inorganic storage phosphor panels including a selected blue dye that can be recycled while maintaining sufficient image quality characteristics.
Abstract:
A method for forming a three-dimensional reconstructed image acquires two dimensional measured radiographic projection images over a set of projection angles, wherein the measured projection image data is obtained from an energy resolving detector that distinguishes first and second energy bands. A volume reconstruction has image voxel values representative of the scanned object by back projection of the measured projection data. Volume reconstruction values are iteratively modified to generate an iterative reconstruction by repeating, for angles in the set of projection angles and for each of a plurality of pixels of the detector: generating a forward projection that includes calculating an x-ray spectral distribution at each volume voxel, calculating an error value by comparing the generated forward projection value with the corresponding measured projection image value, and adjusting one or more voxel values using the calculated error value and the x-ray spectral distribution. The generated iterative reconstruction displays.
Abstract:
A method for obtaining an X-ray image of a subject on a flexible information carrier plate for computed radiography. A memory is affixed to a surface of the plate, wherein the affixed memory stores information about the plate and is in wireless communication with a computer. A first scan date is stored in the affixed memory. Obtaining the X-ray image uses steps of storing at least a job identifier and a scan status for the plate in the affixed memory; acquiring image data from a scan of the plate following exposure to X-rays, acquiring at least the job identifier from the affixed memory, and associating the acquired image data with the acquired job identifier; incrementing a scan count value and updating the scan status in the affixed memory; erasing image content from the plate; and storing the acquired image data in a second, computer-accessible memory according to the acquired job identifier.
Abstract:
A method for 3-D cephalometric analysis of a patient, executed at least in part on a computer processor, displays reconstructed volume image data from a computed tomographic scan of a patient's head from at least a first 2-D view and accepts an operator instruction that positions and displays at least one reference mark on the at least the first displayed 2-D view. One or more dentition elements within the mouth of the patient are segmented and one or more cephalometric parameters computed for the patient according to the at least one reference mark and the one or more segmented dentition elements. One or more results generated from analysis of the one or more computed cephalometric parameters are displayed.
Abstract:
Described is a scintillator screen including a plurality of filaments. Each of the plurality of filaments includes scintillating particles dispersed within a thermoplastic polymer. The thermoplastic polymer includes an elastic additive. The scintillating particles are from about 10 volume percent to about 60 volume percent of each of the plurality of filaments. Each of the plurality of filaments has a refractive index of greater than or equal to 1.5. The plurality of filaments are substantially parallel to each other and are at a volume packing of from about 60 percent to about 90 percent.
Abstract:
Described is a scintillator screen including a plurality of filaments. Each of the plurality of filaments includes scintillating particles dispersed within a thermoplastic polymer. The thermoplastic polymer includes an elastic additive. The scintillating particles are from about 10 volume percent to about 60 volume percent of each of the plurality of filaments. Each of the plurality of filaments has a refractive index of greater than or equal to 1.5. The plurality of filaments are substantially parallel to each other and are at a volume packing of from about 60 percent to about 90 percent.
Abstract:
An extra-oral dental imaging apparatus for obtaining an image from a patient has a radiation source; a first digital imaging sensor that provides, for each of a plurality of image pixels, at least a first digital value according to a count of received photons that exceed at least a first energy threshold; a mount that supports the radiation source and the first digital imaging sensor on opposite sides of the patient's head; a computer in signal communication with the digital imaging sensor for acquiring a first two-dimensional image from the first digital imaging sensor; and a second digital imaging sensor that is alternately switched into place by the mount and that provides image data according to received radiation.
Abstract:
Method and apparatus embodiments can generate a volume fluorescence image of a tooth. Method and apparatus embodiments can project structured light patterns onto a tooth and generate a contour (volume) image of the tooth surface from acquired corresponding structured light projection images; then acquire one or more fluorescence images of the tooth generated under blue-UV illumination. A composite image that shows fluorescence image content mapped to the generated contour image can be transmitted, stored, modified and/or displayed.
Abstract:
A method for obtaining an intra-oral X-ray image of a subject on a flexible information carrier plate for computed radiography affixes a memory to a surface of the information carrier plate, wherein the affixed memory stores information about the plate and wherein the affixed memory is in wireless communication with a computer, stores at least a first scan date in the affixed memory, exposes the subject and obtains the intra-oral X-ray image of the subject using steps of: (i) storing identification data about the subject and about the image exposed in the affixed memory; (ii) acquiring image data from a scan of the flexible information carrier plate following exposure to X-rays, acquiring at least the stored identification data from the affixed memory, and associating the acquired image data with the acquired identification data; (iii) erasing image content from the flexible information carrier plate; and (iv) storing the acquired image data in a second, computer-accessible memory according to the acquired identification data.
Abstract:
A method for obtaining an X-ray image of a subject on a flexible information carrier plate for computed radiography. A memory is affixed to a surface of the plate, wherein the affixed memory stores information about the plate and is in wireless communication with a computer. A first scan date is stored in the affixed memory. Obtaining the X-ray image uses steps of storing at least a job identifier and a scan status for the plate in the affixed memory; acquiring image data from a scan of the plate following exposure to X-rays, acquiring at least the job identifier from the affixed memory, and associating the acquired image data with the acquired job identifier; incrementing a scan count value and updating the scan status in the affixed memory; erasing image content from the plate; and storing the acquired image data in a second, computer-accessible memory according to the acquired job identifier.