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We report on the validation of our combined respiratory and rigid body motion compensation strategy through acquisitions of the Data Spectrum anthropomorphic phantom, and investigation of clinical efficacy and robustness in 25 cardiac perfusion patient studies, employing a visual tracking system (VTS). The heart and liver was filled with a 2∶1 concentration of Tc-99m and two sets of SPECT data were...
Simulation investigations on 4H-SiC based double-drift avalanche-transit-time diode clearly establishes it's potential at higher terahertz region. Further, the effects of punch-through on the terahertz behavior of the device are studied for the first time, through a generalized simulation technique. The computed results revealed that for a fixed bias current density, when the space-charge effect is...
Wide-Band-Gap (WBG) alpha (4H and 6H)-SiC and beta(3C)-SiC based double drift region (DDR, p+p n n+ type), IMPATT devices are designed at sub-millimeter wave (Terahertz) region and their high frequency characteristics are compared for the first time through an extensive simulation experiment. The study indicates that at around 0.3 THz, alpha(4H)-SiC based IMPATT device can yield a RF power (PRF) of...
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