A Modified Post Processing Correction Matrix For SPECT
A Modified Post Processing Correction Matrix For SPECT
复制标题
改进的 SPECT 后处理校正矩阵
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
J. Seibert
中科院分区：
文献类型：
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作者：
D. Macey;G. Denardo;S. Denardo;J. Seibert
研究了单光子发射计算机断层扫描（SPECT）重建后的衰减补偿方法，为定量问题提供了一种新的途径。生成用于衰减补偿的修改的校正矩阵，其中，根据像素距真实截面边界的径向距离，为每个像素的线性衰减系数（LAC）分配一个值。用该矩阵对体模中小体积和大体积Tc-99 m源的横截面图像进行衰减补偿，结果表明，该矩阵能准确地测定10%以上的已知量的放射性核素。散射分数估计为使用乘法矩阵（每个像素的LAC恒定）和本报告中提出的修改矩阵生成的校正切片图像的差异。
A post reconstruction method of attenuation compensation for Single Photon Emission Computed Tomography (SPECT) has been investigated that offers a new approach to the problem of quantitation. A modified correction matrix is generated for attenuation compensation in which the Linear Attenuation Coefficient (LAC) for each pixel is assigned a value depending on the radial distance of the pixel from the true section boundary. Attenuation compensation of transverse section images of small and large volume sources of Tc-99m in phantoms using this modified matrix indicated that a known quantity of radionuclide could be determined to better than 10%. The scatter fraction was estimated as the difference in the corrected section images using a multiplicative matrix generated with a constant LAC for each pixel and the modified matrix proposed in this report.
使用散射光子补偿改进 SPECT 量化。
DOI：
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发表时间：
1984
期刊：
Journal of nuclear medicine : official publication, Society of Nuclear Medicine
影响因子：
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作者：
Jaszczak,RJ;Greer,KL;FloydJr,CE;Harris,CC;Coleman,RE
通讯作者：
Coleman,RE