3-D Spatial Resolution of 350 μ m Pitch Pixelated CdZnTe Detectors for Imaging Applications [0.03%]
350μm像素化的CdZnTe检测器的三维空间分辨率用于成像应用
Yongzhi Yin,Ximeng Chen,Heyu Wu et al.
Yongzhi Yin et al.
We are currently investigating the feasibility of using highly pixelated Cadmium Zinc Telluride (CdZnTe) detectors for sub-500 μm resolution PET imaging applications. A 20 mm × 20 mm × 5 mm CdZnTe substrate was fabricated with 350 μm pi...
An Intensified EMCCD Camera for Low Energy Gamma Ray Imaging Applications [0.03%]
一种低能γ射线成像应用的增强型EMCCD相机
L J Meng
L J Meng
This paper presents the design and feasibility study of a very-high resolution gamma camera for detecting 27-35 keV X and gamma rays emitted by I-125 labelled radiotracers. This detector consists of a newly developed Electron-multiplying CC...
L J Meng,Z He,B Alexander et al.
L J Meng et al.
This paper presents the spectroscopic performance of two newly developed pixelated HgI2 detectors. These detectors are 1 × 1 × 0.814 cm3 and 1 × 1 × 1.016 cm3 in size. Each detector has four closely packed 1 × mm2 anode pixels at the c...
Feasibility Study of Compton Scattering Enhanced Multiple Pinhole Imager for Nuclear Medicine [0.03%]
康普顿散射增强型多针孔核医学成像仪的可行性研究
L J Meng,W L Rogers,N H Clinthorne
L J Meng
This paper presents a feasibility study of a Compton scattering enhanced (CSE) multiple pinhole imaging system for gamma rays with energy of 140keV or higher. This system consists of a multiple-pinhole collimator, a position sensitive scint...
A Backprojection-Based Parameter Estimation Technique for Skew-Slit Collimation [0.03%]
一种基于反投影的斜缝准直参数估计技术
Jacob A Piatt,Gengsheng L Zeng
Jacob A Piatt
To estimate geometric parameters in a skew-slit single photon emission computed tomography (SPECT) scan, a simple method is presented that uses a single point source and a backprojection process. The method employs one point source placed s...
Evaluation of Rigid-Body Motion Compensation in Cardiac Perfusion SPECT Employing Polar-Map Quantification [0.03%]
评估心脏灌注SPECT采用极地图定量化 rigid-body运动补偿的效果
P Hendrik Pretorius,Karen L Johnson,Michael A King
P Hendrik Pretorius
We have recently been successful in the development and testing of rigid-body motion tracking, estimation and compensation for cardiac perfusion SPECT based on a visual tracking system (VTS). The goal of this study was to evaluate in patien...
Task Equivalence for Model and Human-Observer Comparisons in SPECT Localization Studies [0.03%]
SPECT定位研究中模型和人观察者比较的任务等效性
Anando Sen,Faraz Kalantari,Howard C Gifford
Anando Sen
While mathematical model observers are intended for efficient assessment of medical imaging systems, their findings should be relevant for human observers as the primary clinical end users. We have investigated whether pursuing equivalence ...
Nan Li,Ling-Jian Meng
Nan Li
This paper presents an analytical approach for performing adaptive angular sampling in single photon emission computed tomography (SPECT) imaging. It allows for a rapid determination of the optimum sampling strategy that minimizes image var...
Noise-Weighted FBP Algorithm for Uniformly Attenuated SPECT Projections [0.03%]
用于均匀衰减SPECT投影的噪声加权FBP算法
Gengsheng L Zeng
Gengsheng L Zeng
Noise-weighted FBP (filtered backprojection) algorithm and Bayesian FBP algorithm were developed recently for un-attenuated Radon transform, which have applications in x-ray CT (computed tomography). This paper extends the noise-weighted FB...
Capacitance-Based Dosimetry of Co-60 Radiation using Fully-Depleted Silicon-on-Insulator Devices [0.03%]
基于容量的剂量测量方法使用完全耗尽的绝缘体上硅器件进行Co-60辐射
Yulong Li,Warren M Porter,Rui Ma et al.
Yulong Li et al.
The capacitance based sensing of fully-depleted silicon-on-insulator (FDSOI) variable capacitors for Co-60 gamma radiation is investigated. Linear response of the capacitance is observed for radiation dose up to 64 Gy, while the percent cap...