Philip J Pietraski,Lars R Furenlid
Philip J Pietraski
Synchrotron light sources are low-duty-cycle pulsed X-ray sources, a fact that is often neglected in estimating the count-rate capabilities of photon-counting detectors in synchrotron-based experiments. In this paper, we demonstrate the eff...
Gengsheng L Zeng,Zeljko Divkovic
Gengsheng L Zeng
Recently we developed a Bayesian-FBP (Filtered Backprojection) algorithm for CT image reconstruction. This algorithm is also referred to as the FBP-MAP (FBP Maximum a Posteriori) algorithm. This non-iterative Bayesian algorithm has been app...
TandemPET- A High Resolution, Small Animal, Virtual Pinhole-Based PET Scanner: Initial Design Study [0.03%]
双元PET-一种高分辨率、小型动物、基于虚拟针孔的正电子发射断层扫描仪：初步设计研究
Raymond R Raylman,Alexander V Stolin,Peter F Martone et al.
Raymond R Raylman et al.
Mice are the perhaps the most common species of rodents used in biomedical research, but many of the current generation of small animal PET scanners are non-optimal for imaging these small rodents due to their relatively low resolution. Con...
Lindsay C Johnson,Oleg Ovchinnikov,Sepideh Shokouhi et al.
Lindsay C Johnson et al.
Advances in fabrication techniques, electronics, and mechanical cooling systems have given rise to germanium detectors suitable for biomedical imaging. We are developing a small-animal SPECT system that uses a double-sided Ge strip detector...
A 2D 4×4 Channel Readout ASIC for Pixelated CdTe Detectors for Medical Imaging Applications [0.03%]
一种用于医学成像的像素化CdTe探测器的2D四通道读出ASIC
Jose-Gabriel Macias-Montero,Maher Sarraj,Mokhtar Chmeissani et al.
Jose-Gabriel Macias-Montero et al.
We present a 16-channel readout integrated circuit (ROIC) with nanosecond-resolution time to digital converter (TDC) for pixelated Cadmium Telluride (CdTe) gamma-ray detectors. The 4 × 4 pixel array ROIC is the proof of concept of the 10 ...
Element Mapping in Organic Samples Utilizing a Benchtop X-Ray Fluorescence Emission Tomography (XFET) System [0.03%]
基于台式X射线荧光发射层析(XFET)系统的有机样品元素分布分析
A Groll,J George,P Vargas et al.
A Groll et al.
X-ray fluorescence computed tomography (XFCT) is an emerging imaging modality that maps the three-dimensional distribution of elements, generally metals, in ex vivo specimens and potentially in living animals and humans. Building on our pre...
Q Peng,W-S Choong,C Vu et al.
Q Peng et al.
We have constructed and characterized a time-of-flight Positron Emission Tomography (TOF PET) camera called the Tachyon. The Tachyon is a single-ring Lutetium Oxyorthosilicate (LSO) based camera designed to obtain significantly better timin...
Dong Zeng,Jing Huang,Zhaoying Bian et al.
Dong Zeng et al.
Low-dose X-ray computed tomography (CT) simulation from high-dose scan is required in optimizing radiation dose to patients. In this study, we propose a simple low-dose CT simulation strategy in sinogram domain using the raw data from high-...
Effect of Non-Alignment/Alignment of Attenuation Map Without/With Emission Motion Correction in Cardiac SPECT/CT [0.03%]
心肌灌注显像中衰减校正时匹配与否以及是否进行发射断层运动校正在内的四种组合方法的影响研究
Joyoni Dey,W Paul Segars,P Hendrik Pretorius et al.
Joyoni Dey et al.
Purpose: We investigate the differences without/with respiratory motion correction in apparent imaging agent localization induced in reconstructed emission images when the attenuation maps used for attenuation correction ...
An Accurate Timing Alignment Method with Time-to-Digital Converter Linearity Calibration for High-Resolution TOF PET [0.03%]
一种基于时间数字转换器线性校正的高分辨率TOF PET精确时序对齐方法
Hongdi Li,Chao Wang,Shaohui An et al.
Hongdi Li et al.
Accurate PET system timing alignment minimizes the coincidence time window and therefore reduces random events and improves image quality. It is also critical for time-of-flight (TOF) image reconstruction. Here, we use a thin annular cylind...