搜索结果: 1-15 共查到“知识库 生物医学工程 PET”相关记录15条 . 查询时间(0.178 秒)
神经系统副肿瘤综合征（paraneoplastic neurologics yndrome，PNS ）是发生于某些恶性肿瘤患者体内神经系统表现异常的一类少见疾病，其临床表现多样，且神经系统症状的出现多早于恶性肿瘤的诊断。虽然抗神经元抗体对诊断PNS 有提示作用，但是存在较多假阳性和假阴性情况。因此，PNS 的诊断往往是临床工作的难点。PET/CT是一种解剖和功能融合的显像技术，通过一次扫描即可评价...
A Hypoxia Imaging of Rodent Xenografts with 18F-Fluoromisonidazole: Comparison of Dynamic and Static PET Imaging
Tumor Hypoxia Dynamic image Compartmental Modeling 18F-FMISO PET
2013/1/29
Purpose: To generate parametric images of tumor hypoxia in a tumor-bearing rat model using voxel-based compartmental analysis of dynamic fluorine-18 labeled misonidazole (18F-FMISO) microPET? images, ...
Prognostic Values of PET/CT Findings and Tumor/Patient Characteristics with Non-Small Cell Lung Cancer
Non-Small Cell Lung Cancer Survival Prognosis Positron Emission Tomography (PET) FDG-PET
2013/1/31
Background/Aim: Although numerous prognostic factors have been described for non-small cell lung cancer (NSCLC), there is still a requirement for better and non-invasive markers. FDG-PET is a non inva...
Optimal nonlinear line-of-flight estimation in PET
Artificial neural network emission tomography gamma camera scintillation detector
2010/1/7
The authors consider detection of high-energy photons in positron emission tomography using thick scintillation crystals.Parallax effect and multiple Compton interactions in such
crystals significant...
Optimal nonlinear line-of-flight estimation in PET
Artificial neural network emission tomography gamma camera scintillation detector
2010/1/7
The authors consider detection of high-energy photons in positron emission tomography using thick scintillation crystals.Parallax effect and multiple Compton interactions in such
crystals significant...
Reciprocal Benefits of Mass-Univariate and Multivariate Modeling in Brain Mapping: Applications to Event-Related Functional MRI, H215O-, and FDG-PET
MRI H215O FDG-PET
2009/9/8
In brain mapping studies of sensory, cognitive, and motor operations, specific waveforms of dynamic neural activity are predicted based on theoretical models of human information processing. For examp...
Improved Image Fusion in PET/CT Using Hybrid Image Reconstruction and Super-Resolution
Improved Image Fusion PET/CT
2009/9/8
Purpose. To provide PET/CT image fusion with an improved PET resolution and better contrast ratios than standard reconstructions. Method. Using a super-resolution algorithm, several PET acquisitions w...
Registration of Brain MRI/PET Images Based on Adaptive Combination of Intensity and Gradient Field Mutual Information
MRI/PET Images Intensity
2009/9/7
Traditional mutual information (MI) function aligns two multimodality images with intensity information, lacking spatial information, so that it usually presents many local maxima that can lead to ina...
The purpose of this study was to detect the physiological process of FDG's filtration from blood to urine and to establish a mathematical model to describe the process. Dynamic positron emission tomog...
Clustering-Based Linear Least Square Fitting Method for Generation of Parametric Images in Dynamic FDG PET Studies
Parametric Images Dynamic FDG PET Studies
2009/9/7
Parametric images generated from dynamic positron emission tomography (PET) studies are useful for presenting functional/biological information in the 3-dimensional space, but usually suffer from thei...
Purpose. To evaluate the diagnosis value of integrated positron emission tomography and computed tomography (PET/CT) with lung masses, this study emphasized the correlation between tumor size and maxi...
Cerebral Blood Flow Measurement Using fMRI and PET: A Cross-Validation Study
fMRI PET Cerebral Blood Flow Measurement
2009/9/4
An important aspect of functional magnetic resonance imaging (fMRI) is the study of brain hemodynamics, and MR arterial spin labeling (ASL) perfusion imaging has gained wide acceptance as a robust and...
Blind Deblurring Reconstruction Technique with Applications in PET Imaging
PET Imaging Blind Deblurring Reconstruction Technique
2009/9/4
We developed an empirical PET model taking into account system blurring and a blind iterative reconstruction scheme that estimates both the actual image and the point spread function of the system. Re...
通过模型研究和临床病例分析，比较Biograph 64型PET/CT和Ecat Exact HR+型PET仪，并从病灶检出能力、图像质量、患者检查的方便性和工作人员操作的友好性等多个角度，对新型的Biograph 64 PET/CT的主要性能进行评价。
Analysis and interpretation of dynamic FDG PET oncological studies using data reduction techniques
dynamic FDG PET oncological studies data reduction techniques
2010/2/25
We have applied principal component analysis to provide high-contrast parametric image sets of lower dimensions than the original data set separating structures based on their kinetic characteristics....