Heather L Durko,Harrison H Barrett,Lars R Furenlid
Heather L Durko
We have developed a gamma-ray imaging system that combines a high-resolution silicon detector with two sets of movable, half-keel-edged copper-tungsten blades configured as crossed slits. These apertures can be positioned independently betw...
Effects of Detector Thickness on Geometric Sensitivity and Event Positioning Errors in the Rectangular PET/X Scanner [0.03%]
探测器厚度对矩形PET/X扫描仪几何灵敏度和事件定位误差的影响研究
Lawrence R MacDonald,William C J Hunter,Paul E Kinahan et al.
Lawrence R MacDonald et al.
We used simulations to investigate the relationship between sensitivity and spatial resolution as a function of crystal thickness in a rectangular PET scanner intended for quantitative assessment of breast cancers. The system had two 20 × ...
Light-Sharing Interface for dMiCE Detectors Using Sub-Surface Laser Engraving [0.03%]
基于亚表面激光刻蚀的dMiCE探测器分时复用接口技术研究
William C J Hunter,Robert S Miyaoka,Lawrence MacDonald et al.
William C J Hunter et al.
We have previously reported on dMiCE, a method of resolving depth or interaction (DOI) in a pair of discrete crystals by encoding light sharing properties as a function of depth in the interface of a crystal-element pair. A challenge for th...
Optimization of the Energy Window for PETbox4, a Preclinical PET Tomograph With a Small Inner Diameter [0.03%]
适用于小型内径小动物PET扫描仪的PETbox4能量窗口优化研究
Z Gu,Q Bao,R Taschereau et al.
Z Gu et al.
Small animal positron emission tomography (PET) systems are often designed by employing close geometry configurations. Due to the different characteristics caused by geometrical factors, these tomographs require data acquisition protocols t...
Revisit of the Ramp Filter [0.03%]
再谈斜率滤波器
Gengsheng L Zeng
Gengsheng L Zeng
An important part of the filtered backprojection (FBP) algorithm is the ramp filter. This paper derives the discrete version of the ramp filter in the Fourier domain and studies the windowing effects. When a window function is used to contr...
FPGA Electronics for OPET: A Dual-Modality Optical and Positron Emission Tomograph [0.03%]
用于OPET的FPGA电子设备：一种兼备光学及正电子发射断层扫描技术的双模态成像系统
Ali Douraghy,Fernando R Rannou,Robert W Silverman et al.
Ali Douraghy et al.
The development of a prototype dual-modality optical and PET (OPET) small animal imaging tomograph is underway in the Crump Institute for Molecular Imaging at the University of California Los Angeles. OPET consists of a single ring of six d...
Comparison of FBP and Iterative Algorithms with Non-Uniform Angular Sampling [0.03%]
非均匀角度采样条件下滤波反投影与迭代重建算法的比较研究
Gengsheng L Zeng
Gengsheng L Zeng
Some people may believe that the filtered backprojection (FBP) algorithm does not work if the projection data are measured non-uniformly. Some may also believe that iterative algorithms can automatically handle the non-uniformly sampled dat...
Bing Feng,Gengsheng L Zeng
Bing Feng
A challenge for the pixelated detector is that the detector response of a gamma-ray photon varies with the incident angle and the incident location within a crystal. The normalization map obtained by measuring the flood of a point-source at...
A Simple Capacitive Charge-Division Readout for Position-Sensitive Solid-State Photomultiplier Arrays [0.03%]
一种简单的电容充电分割读出方法及其在固态光电倍增管阵列位置敏感探测器中的应用研究
Junwei Du,Jeffrey P Schmall,Yongfeng Yang et al.
Junwei Du et al.
A capacitive charge-division readout method for reading out a 2 × 2 array of 5 mm × 5 mm position-sensitive solid-state photomultipliers (PS-SSPM) was designed and evaluated. Using this analog multiplexing method, the 20 signals (16 posit...
Timing and Energy Resolution of new near-UV SiPMs coupled to LaBr3:Ce for TOF-PET [0.03%]
一种新的近紫外SiPM与LaBr3：Ce耦合的时序和能量分辨率用于TOF-PET
Jeffrey P Schmall,Rony I Wiener,Suleman Surti et al.
Jeffrey P Schmall et al.
The high light output and fast decay time of LaBr3:Ce scintillation detectors leads to excellent timing performance. To realize the potential of timing resolution with LaBr3:Ce we have investigated the performance with SiPMs, which enable 1...