Design and Development of a New Multi-Projection X-Ray System for Chest Imaging [0.03%]
新型多投影X射线胸部成像系统的设计与开发
Amarpreet S Chawla,Sarah Boyce,Lacey Washington et al.
Amarpreet S Chawla et al.
Overlapping anatomical structures may confound the detection of abnormal pathology, including lung nodules, in conventional single-projection chest radiography. To minimize this fundamental limiting factor, a dedicated digital multi-project...
Gengsheng L Zeng
Gengsheng L Zeng
This paper investigates some potential methods for few-view tomography, and investigates the cause and remedy of the staircase artifacts. This paper also discusses whether there is any benefit to use edge-preserving filters in emission tomo...
Gengsheng L Zeng
Gengsheng L Zeng
The ML-EM (maximum likelihood expectation maximization) algorithm is the most popular image reconstruction method when the measurement noise is Poisson distributed. This short paper considers the problem that for a given noisy projection da...
Inclusion of Radiation Environment Variability in Total Dose Hardness Assurance Methodology [0.03%]
辐射环境多变性在总剂量抗辐射加固方法学中的应用研究
M A Xapsos,C Stauffer,A Phan et al.
M A Xapsos et al.
Variability of the space radiation environment is investigated with regard to parts categorization for total dose hardness assurance methods. It is shown that it can have a significant impact. A modified approach is developed that uses curr...
Development and characterization of a round hand-held silicon photomultiplier based gamma camera for intraoperative imaging [0.03%]
一种用于术中影像的圆手持式硅光电倍增管伽马相机的研发与表征
Kosta Popovic,Jack E McKisson,Brian Kross et al.
Kosta Popovic et al.
This paper describes the development of a hand-held gamma camera for intraoperative surgical guidance that is based on silicon photomultiplier (SiPM) technology. The camera incorporates a cerium doped lanthanum bromide (LaBr3:Ce) plate scin...
Ling-Jian Meng,Nan Li
Ling-Jian Meng
In this paper, we present the use of modified uniform Cramer-Rao type bounds (MUCRB) for the design of single photon emission tomography (SPECT) systems. The MUCRB is the lowest attainable total variance using any estimator of an unknown ve...
Exploring the limiting timing resolution for large volume CZT detectors with waveform analysis [0.03%]
基于波形分析的大容积闪烁型碲锌镉探测器时间分辨率研究
L J Meng,Z He
L J Meng
This paper presents a study for exploring the limiting timing resolution that can be achieved with a large volume 3-D position sensitive CZT detector. The interaction timing information was obtained by fitting the measured cathode waveforms...
L J Meng,D K Wehe
L J Meng
This paper presents a feasibility of a gamma ray imager using combined electronic and mechanical collimation methods. This detector is based on the use of a multiple pinhole collimator, a position sensitive scintillation detector with Anger...
Design and Feasibility Study of a Single Photon Emission Microscope System for Small Animal I-125 Imaging [0.03%]
用于小动物碘-125成像的单光子发射显微镜系统设计与可行性研究
L J Meng,N H Clinthorne,S Skinner et al.
L J Meng et al.
This paper presents a design study of a single photon emission microscope (SPEM) system for small animal imaging using I-125 labelled radiotracers. This system is based on the use of a very-high resolution gamma camera coupled to a convergi...
Non-Uniform Object-Space Pixelation (NUOP) for Penalized Maximum-Likelihood Image Reconstruction for a Single Photon Emission Microscope System [0.03%]
用于单光子发射显微系统惩罚最大似然图像重建的非均匀对象空间像素化(NUOP)技术
L J Meng,Nan Li
L J Meng
This paper presents a non-uniform object-space pixelation (NUOP) approach for image reconstruction using the penalized maximum likelihood methods. This method was developed for use with a single photon emission microscope (SPEM) system that...