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图书信息
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Single photon emission computed tomography (SPECT) imaging and its simulation technique
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ISBN: | 9787569264272 |
定价: | ¥59.00 |
作者: | Written by Dong Xianling |
出版社: | 吉林大学出版社 |
出版时间: | 2020年11月 |
开本: | 24cm |
页数: | 189页 |
中图法: | O435.2 |
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2024-04-19
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图书简介 | 本书详细介绍了单光子发射断层成像的基础理论,硬件结构介绍了准直器、闪烁探测器、光电倍增管和位置计算电路,软件部分介绍了图像重建和衰减矫正,重点讲解了图像重建过程中的滤波器,并详细介绍了SPECT成像技术的性能评价,评价指标包含固有空间分辨率、系统空间分辨率、能量分辨率、灵敏度等。又以MCNP(Monte Carlo N Particle Transport Code)蒙特卡罗方法的通用软件包为基础,详细讲解设计了单光子发射断层成像设备的仿真系统的关键步骤,并分析了准直器的孔壁厚度、孔径,以及重建参数对成像质量的影响。另从放射源特性入手,分析放射源区域的大小,肿瘤活性(TBR),以及图像的光子密度等特征,与重建图像之间的联系。本书不仅可以使读者详细理解SPECT成像系统的原理,并且从仿真模型为基础,理解SPECT成像过程中的影响因素,为开发和优化SPECT成像系统奠定了良好的基础。 |
编辑推荐 | 目前,单光子发射计算机断层成像技术是一种普遍采用的临床疾病检查手段,相比于结构成像模态,如X线、超声和核磁共振成像,单光子发射断层成像技术能实现对脏器能成像, 可早期诊断。然而在临床上,医生只能根据经验来选择重建参数,尤其是年轻影像诊断医师,缺少足够的时间培训,经验不足。不合适的参数重建出的断层图像不仅与实际癌变区域分布有异,而且给医师的诊断工作带来的巨大挑战。如果图像不能真实反映实际核素分布,无法正确诊断癌变情况,尤其在肺癌早期发展阶段,癌变区域较小,处于亚厘米,极易受到噪声的影响,会增加漏诊或误诊的几率。 |
目录 | CHAPTER 1 INTRODUCTIONr 1.1 Backgroundr 1.1.1 Breast Cancerr 1.1.2 Imaging Modalitiesr 1.2 SPECT Imagingr 1.3 Problem Statementr 1.4 Aim and Objectivesr 1.5 Scope and Limitationr 1.6 Thesis Contributionr CHAPTER 2 LITERATURE REVIEWr 2.1 The Basic Operations of SPECT Scannerr 2.1.1 Radiopharmaceuticalsr 2.1.2 Collimatorr 2.1.3 Scintillation Detectorr 2.1.4 Photomultiplier Tubesr 2.1.5 Position Circuitsr 2.1.6 Image Reconstructionr 2.1.7 Correction Techniquesr 2.2 Monte Carlo Simulationr 2.2.1 Theory o{ Monte Carlo Simulationr 2.2.2 Work Flow of Monte Carlo Simulationr 2.2.3 The MP Programr 2.3 Applications of Monte Carlo Simulation in Nuclear Mediciner 2.3.1 SPECT Imaging Systemr 2.3.2 Collimator Designr 2.3.3 Current Work on Modelling the Breast Imagerr 2.4 Image Filtering Technology for SPECT Imagingr 2.4.1 Related Filtersr 2.4.2 Butterworth Filterr 2.5 Summaryr CHAPTER 3 MATERIALS AND METHODSr 3.1 Design of a SPECT Camera Model in the Simulation Environmentr 3.1.1 Geometrical Structure of SPECT Camerar 3.1.2 Construction of Collimatorr 3.1.3 Position Determination and Blurring Strategy r 3.1.4 Image Reconstructionr 3.1.5 Model Validationr 3.2 Characteristic of Wire Mesh Collimatorr 3.2.1 Hole Sizer 3.2.2 Septa Sizer 3.2.3 Experimental Set-upr 3.2.4 Performance Evaluationr 3.3 Development of Adaptive Filtering Techniquer 3.3.1 Choice of Filterr 3.3.2 Optimization of Parametersr 3.3.3 Formulation of Adaptive Filterr 3.3.4 Verification of Proposed Adaptive Butterworth Filter Modelr 3.4 Summaryr CHAPTER 4 RESULTS AND DISCUSSIONr 4.1 Validation of Simulated SPECT Modelr 4.1.1 Intrinsic Energy Resolutionr 4.1.2 Intrinsic Spatial Resolutionr 4.1.3 System Spatial Resolution and Sensitivityr 4.1.4 Tomographic Spatial Resolutionr 4.2 Performance of Wire Mesh Collimatorr 4.2.1 Point Sourcer 4.2.2 Extended Sourcer 4.2.3 Breast Phantomr 4.3 Development of an Adaptive Filter for Breast SPECT Imagingr 4.3.1 Choice of Filterr 4.3.2 Optimization of Cutoff Frequencyr 4.3.3 Formulation of an Adaptive Butterworth Filterr 4.3.4 Comparison of the Proposed Adaptive Filter with Othersr 4.3.5 Verification of Proposed Adaptive Butterworth Filter Modelr 4.4 Summaryr CHAPTER 5 CONCLUSIONr 5.1 Summaryr 5.2 Recommendations for Future Worksr REFERENCESr APPENDICESr LIST OF ABBREVIATIONS |
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