The ASIC is controlled by a personal computer through a commercial PCI card, which is also used for data acquisition.
We have demonstrated noiseless single-photon counting over a threshold of 7.2 keV using Silicon detectors and are presently capable of maximum counting rates of 2 MHz per channel. The chip consists of 16 parallel channels, each containing preamplifier, shaper, comparator and a 16 bit counter. We have developed an application specific integrated circuit (ASIC) and data acquisition system for digital X-ray imaging. [Lawrence Berkeley National Lab., CA (United States) Many modalities are fundamentally digital in that they require image reconstruction from quantified digital signals, such as computed tomography (CT) and magnetic resonance imaging (MRI)Īn application specific integrated circuit and data acquisition system for digital X-ray imagingīeuville, E. Nowadays, all medical imaging modalities provide for digital acquisition, though globally, the use of radiographic film is still widespread. The original means of recording X ray images was a photographic plate. [CoreLab Partners, Princeton (United States) Energy Technology Data Exchange (ETDEWEB)Ĭlunie, D.
