China
Africa
Explore chapters and articles related to this topic
Recent Advances in Positron Emission Tomography Technology
Published in Krzysztof Iniewski, Biological and Medical Sensor Technologies, 2017
Farhad Taghibakhsh, Craig S. Levin
This is a novel technology recently developed by Philips which integrates an SiPM with processing circuits at microcell level to produce an all-in-one digital sensor that considerably reduces the need for external processing circuitry. Each device contains an integrated counter and an integrated time to digital converter (TDC) to provide energy and arrival time information (Figure 15.6), respectively [18]. In these devices, each detected photon is directly converted into a digital signal in each of the Geigermode cells of the sensor. Integration of the TDC with the digital sensor provides excellent timing resolution of 153 ps FWHM, while the reported energy resolution is 10.4% FWHM when the sensor is coupled to a 4 × 4 × 22 mm3 LYSO crystal [19]. The sub-200 ps timing resolution for digital SiPM suggests that the detector is promising for time of flight PET applications.
Adaptive timing correction technique for pulse-amplitude and pulse-position modulation interface
Published in International Journal of Electronics, 2019
Waleed Madany, Mostafa Rashdan, El-Sayed Hasaneen
Different time-based serial link architectures are proposed as an alternative to SerDes architectures. In (Rashdan, Abdel, Haslett, & Maundy, 2009), the authors have proposed a PPM-TDC serial link. The position of the rising edge of the input clock signal is modulated at the transmitter side. At the receiver side, the time difference between the received data signal and the received clock signal is then converted to a digital code using a time-to-digital converter (TDC) circuit. In these links, the operating frequency of the input clock signal is not proportional to the number of the transmitted data bits, which permits increasing the data rate without complicating the link design as in SerDes links (Rashdan et al., 2009).