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MicroDose
MicroDose is a trademark owned by Philips, purchased from Sectra. It refers to line of mammography equipment advertising a very low radiation dose. This equipment is based on a photon-counting detector for capturing the image.
==Photon-counting detector==
A photon-counting detector utilizes the discrete nature of X-rays, as it counts individual photons when they are captured in a detector medium. This is in contrast to “pseudo-digital” detectors that integrates photon energy over time, thus in practice measuring an analog signal that in turn is digitized. While the conversion steps from analog to digital signal in a traditional detector introduces thermal noise, quantization errors and loss of information during signal processing, a truly digital detector suffers from none of these weaknesses. A photon-counting detector is capable of capturing close to all information in the signal. This way it is possible to lower the radiation dose to a minimum while preserving or even improving image quality.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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