Siemens' MR-PET prototype is dedicated to the brain and the PET scanner USES a next-generation Avalanche PhotodiodeDetector (APD) technology.
西门子的MR - PET样机致力于大脑，PET扫描应用了新一代雪崩光电探测器(APD)技术。
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At the same time optical rotation of the particles was realized. The rotation frequency was measured by CCD camera and quadrant photodiodedetector (QD).
The avalanche photodiodedetector is followed by a front-end amplifier and equalizer or filter to provide gain as well as linear signal processing and noise bandwidth redution.