Food x-ray inspection systems are designed to detect unwanted physical contaminants in packaged food maintain a high level of safety for consumers. Modern day often utilize line scan sensors these but limited single or dual energies. However, by using photon counting detector (PCD), new generation capable acquiring images at more than two energy bins could improve discrimination between low den...

The hard X-ray sky now being studied by INTEGRAL and Swift and soon by NuSTAR is rich with energetic phenomena and highly variable non-thermal phenomena on a broad range of timescales. The High Energy Telescope (HET) on the proposed Energetic X-ray Imaging Survey Telescope (EXIST) mission will repeatedly survey the full sky for rare and luminous hard X-ray phenomena at unprecedented sensitiviti...

OBJECTIVES Thallium-201 is efficient for myocardial perfusion imaging, but leads to relatively high radiation exposure in patients. The purpose of this study was to compare the efficiency of low-dose thallium-201 imaging with cadmium-zinc-telluride (CZT) cameras with regular-dose thallium-201 imaging with conventional cameras. METHODS We prospectively studied 137 consecutive patients referred...

Cadmium-zinc-telluride (CZT) arrays with photon-counting and energy-resolving capabilities are widely proposed for next-generation X-ray imaging systems. This work presents the performance of a 2 mm-thick CZT pixel detector, with pixel pitches of 500 and 250 µm, dc coupled to a fast and low-noise ASIC (PIXIE ASIC), characterized only by the preamplifier stage. A custom 16-channel digital readou...

Because of its excellent opto-electronic properties, CdZnTe (CZT) has been the material choice for x- and gamma-ray detectors operable at room temperature. CZT is leading commercially available room-temperature radiation detector today. Although much progress made over past three decades, today's crystals still face certain challenges, especially presence performance-limiting materials defects ...

The spectral response of a CdZnTe semiconductor detector has been calculated with the EGS4 Code System. The latest low-energy photon production and transport routines developed at KEK, which consider the K and L shell fluorescent photon production in compounds, bound Compton scattering, Doppler broadening, etc., were included in the EGS4 code. The calculations of the CdZnTe detector also took i...

The cadmium zinc telluride imager (CZTI) on board AstroSat consists of an array a large number pixelated (CZT) detectors capable measuring the polarization incident hard x-rays. measurement capability CZTI for on-axis sources was experimentally confirmed before launch. has yielded tantalizing results x-ray Crab nebula and pulsar in energy range 100 to 380 keV. also contributed prompt emission s...