Abstract: Methods and system for measuring visceral fat mass are provided. One method includes acquiring dual-energy two-dimensional (2D) scan information from a dual-energy X-ray scan of a body and generating a dual-energy X-ray image of the body using the 2D scan information. The method further includes identifying a region of interest using the dual-energy X-ray image and determining a subcutaneous fat mass for each of a plurality of sections of the region of interest. The method also includes determining a visceral fat mass for the region of interest based on the determined subcutaneous fat mass for each of the plurality of sections.

Abstract: An x-ray calibration device includes a core including a first material with a first x-ray attenuation coefficient. The core defines a cavity that is configured to receive a plug of a different x-ray attenuation coefficient in order to alter the x-ray attenuation coefficient of the x-ray calibration device. The x-ray calibration device also includes an outer layer at least partially surrounding the core. The outer layer includes a second material with a second x-ray attenuation coefficient, where the second x-ray attenuation coefficient is lower than the first x-ray attenuation coefficient.

Abstract: Methods and system for measuring visceral fat mass are provided. One method includes acquiring dual-energy two-dimensional (2D) scan information from a dual-energy X-ray scan of a body and generating a dual-energy X-ray image of the body using the 2D scan information. The method further includes identifying a region of interest using the dual-energy X-ray image and determining a subcutaneous fat mass for each of a plurality of sections of the region of interest. The method also includes determining a visceral fat mass for the region of interest based on the determined subcutaneous fat mass for each of the plurality of sections.

Abstract: A monolithic solid-state detector using a staggered arrangement of pixels in multiple rows improves spatial resolution without requiring reduction in pixel size. Parallelogram shapes of CZT monolith allow tiling in one dimension without inefficient zones between monoliths. A scanning device using linear array of detectors with non-rectangular shape and staggered rows of detection elements such that no dead zones occur within a scan field.

Abstract: An energy discriminator, for distinguishing between high and low x-ray energies in a energy sensitive x-ray machine divides high energies into asymmetric regions. The flux rates in each of the asymmetric regions being used to locate the high-energy region in the appropriate high-energy location even in regions of spectral monotonicity. Because two clearly defined spectral peaks need not be present for accurate location of spectral regions in the output of the detector, less filtering and lower tube loading is required.

Abstract: A raster display digital oscilloscope includes an analog to digital converter and a memory array for developing and storing a digital measurement signal amplitude-dependent on an acquired input signal. After processing stored digital signals are conveyed to an output circuit which includes a raster-scanned CRT and three display memory planes independently addressable by the CPU for receiving in discrete address locations the digital data. Corresponding address locations in the three planes are read in synchronism with the CRT scan to develop a display signal for application to the CRT to produce a display corresponding to the sum of the data stored in the three planes. The digital signals are automatically spread out or bunched up within the display planes to compensate for differences between the data acquisition rate and the scan rate.