نتایج جستجو برای: czt detector
تعداد نتایج: 58904 فیلتر نتایج به سال:
A novel approach of chemical mechanical polishing (CMP) is developed for cadmium zinc telluride (CdZnTe or CZT) wafers. The approach uses environment-friendly slurry that consists of mainly silica, hydrogen peroxide, and citric acid. This is different from the previously reported slurries that are usually composed of strong acid, alkali, and bromine methanol, and are detrimental to the environm...
Software engineering diagrams are hard to verify and formally analyse, often due to inadequately defined diagram semantics: the semantics often does not enable formal analysis, or may be underspecified to a degree that does not allow useful properties to be checked. The AUtoZ tools (jamesrobertwilliams.co.uk/autoz.php) provide formalisation in the style of commercially-acceptable model manageme...
The optical C T (Computerized Tomography), which utilises light transmitted through a semi-opaque object extends vision to the inside of objects. The projection profiles of the optical C T are smeared due to the scattering of light in a translucent medium. In the image reconstruction for MRI (Magnetic Resonance Imaging), FID (Free Induction Decay) signals consisting of decaying sinusoids inevit...
BACKGROUND The impact of increased energy resolution of cadmium-zinc-telluride (CZT) cameras on the assessment of left ventricular function under dual-isotope conditions (99mTc and 123I) remains unknown. The Amsterdam-gated dynamic cardiac phantom (AGATE, Vanderwilt techniques, Boxtel, The Netherlands) was successively filled with a solution of 123I alone, 99mTc alone, and a mixture of 123I and...
OBJECTIVE The performance of a new single photon emission computed tomography (SPECT) scanner with a cadmium-zinc-telluride (CZT) solid-state semiconductor detector (Discovery NM 530c; D530c) was evaluated and compared to a conventional Anger-type SPECT with a dual-detector camera (Infinia). METHODS Three different phantom studies were performed. Full width at half maximum (FWHM) was measured...
UNLABELLED Cadmium zinc telluride (CZT) detectors with linear counting rate response enable count subtraction in sequential scanning. We evaluated whether count subtraction eliminated the need for higher activity doses in the second part of the 1-d stress-rest myocardial perfusion imaging (MPI) protocol. METHODS For 50 patients (mean age ± SD, 66 ± 12 y) with visually abnormal (n = 42) or equ...
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