Dual-Polarity SiPM Readout Electronics Based on 1-bit Sigma-Delta Modulatiom Circuit for PET Detector Applications [0.03%]
基于单比特Sigma-Delta调制电路的正负双极SiPM读出电子学应用于PET探测器中
Xinyi Cheng,Kun Hu,Yiping Shao
Xinyi Cheng
We investigated a simple and effective method to extend 1-bit sigma-delta modulation (SDM) circuit based charge-to-digital converter (QDC) to read dual-polarity silicon photomultiplier (SiPM) output signals. With the same QDC circuit but di...
Development of an Eight-Channel Time-Based Readout ASIC for PET Applications [0.03%]
一种八通道基于时间读出的PET应用ASIC的发展研究
Zhi Deng,Allan K Lan,Xishan Sun et al.
Zhi Deng et al.
An eight-channel readout ASIC has been developed for reading output signals from solid-state photomultipliers for positron emission tomography applications. This ASIC converts both the signal charge and occurring time to digital timing puls...
Improvement of Performance of Cardiac SPECT Camera Using Curved Detectors With Pinholes [0.03%]
使用带有针孔的曲面探测器来改进心脏SPECT相机的性能
Joyoni Dey
Joyoni Dey
SPECT is primarily used in the clinic for cardiac myocardial perfusion imaging. However, for SPECT, sensitivity is impaired due to the need for collimation. System resolution FWHM is poor as well (~ 1 cm). In this work the resolution of a c...
Measurement of Cosmic Ray and Trapped Proton LET Spectra on the STS-95 HOST Mission [0.03%]
STS-95 HOST任务中宇宙射线和困住质子LET能谱的测量
E G Stassinopoulos,J L Barth,C A Stauffer
E G Stassinopoulos
This paper reports on in situ measurements of the Linear-Energy-Transfer (LET) spectra of galactic cosmic rays and their progeny and of trapped Van Allen belt protons as recorded by a Pulse Height Analyzer (PHA) radiation spectrometer which...
Depth of Interaction Calibration and Capabilities in 2×2 Discrete Crystal Arrays and Digital Silicon Photomultipliers [0.03%]
2×2离散晶体阵列和数字硅光电倍增管的交互深度校准及性能考核
Adrienne L Lehnert,William C J Hunter,Tom K Lewellen et al.
Adrienne L Lehnert et al.
Digital silicon photomultiplers (dSiPMs) have potential in the advancement of PET detectors. Their advantages include decreased dark counts through selective microcell activation, fast timing, and flexibility configuring event triggering an...
Evaluating Constraints on Heavy-Ion SEE Susceptibility Imposed by Proton SEE Testing and Other Mixed Environments [0.03%]
基于质子SEE试验和其他混合环境评估重离子SEE易损性限制条件
R Ladbury,J-M Lauenstein
R Ladbury
We develop metrics for assessing effectiveness of proton SEE data for bounding heavy-ion SEE susceptibility. The simplest metric is just the areal coverage for the test, which can be expressed as the area on the test part which is struck on...
Pulse pileup analysis for a double-sided silicon strip detector using variable pulse shapes [0.03%]
基于可变脉冲形状的双面硅-strip探测器堆积效应分析
Jinghui Wang,Linchuan Chen,Mats Persson et al.
Jinghui Wang et al.
Due to pulse pileup, photon counting detectors (PCDs) suffer from count loss and energy distortion when operating in high count rate environments. In this paper, we studied the pulse pileup of a double-sided silicon strip detector (DSSSD) t...
Total Ionizing Dose Effects on TiN/Ti/HfO2/TiN Resistive Random-Access Memory Studied via Electrically Detected Magnetic Resonance [0.03%]
基于电检测磁共振的TiN/Ti/HfO2/TiN电阻随机存取存储器总离子化剂量效应的研究
D J McCrory,P M Lenahan,D M Nminibapiel et al.
D J McCrory et al.
We observe a gamma-irradiation induced change in electrically detected magnetic resonance (EDMR) in TiN/Ti/HfO2/TiN resistive random access memory (RRAM). EDMR measurements exclusively detect electrically active defects which are directly i...
Light Spread Manipulation in Scintillators Using Laser Induced Optical Barriers [0.03%]
利用激光诱导光学屏障操纵闪烁体中的光线扩散
Lisa Bläckberg,Michael Moebius,Georges El Fakhri et al.
Lisa Bläckberg et al.
We are using the Laser Induced Optical Barriers (LIOB) technique to fabricate scintillator detectors with combined performance characteristics of the two standard detector types, mechanically pixelated arrays and monolithic crystals. This i...
Direct Reconstruction of CT-based Attenuation Correction Images for PET with Cluster-Based Penalties [0.03%]
基于集群惩罚的PET衰减校正图像直接重建法
Soo Mee Kim,Adam M Alessio,Bruno De Man et al.
Soo Mee Kim et al.
Extremely low-dose CT acquisitions used for PET attenuation correction have high levels of noise and potential bias artifacts due to photon starvation. This work explores the use of a priori knowledge for iterative image reconstruction of t...