Determination of organ volume by single-photon emission tomography.
Determination of organ volume by single-photon emission tomography.
复制标题
通过单光子发射断层扫描确定器官体积。
DOI：
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发表时间：
1983
影响因子：
9.3
通讯作者：
andA. Itti
中科院分区：
文献类型：
--
作者：
W. Tauxe;F. Soussaline;A. Todd;A. Cao;P. Collard;S. Richard;C. Raynaud;andA. Itti
提出了一种基于对SPET图像的单个切片进行分析的器官体积估计方法。在模拟临床情况的体模中，数据显示，最大活度的46%的阈值水平最接近预测一升以上大范围内的真实体积。45%的水平预示着更好的销量将不到一升。对于小于或等于839毫升的模体，误差为6.3毫升(1个估计标准误差)。该级别似乎与模型的平面或位置无关，也与其周围的散射材质量无关。当体模的边缘不与体模的边缘相切时，可以随意包括或排除体模内的非放射性空洞(“洞”)。在这种情况下，它们的边缘与体模的边缘无法区分，并且它们的体积被排除在外。了解器官体积具有诊断和治疗的重要性，并可能导致器官或空间中包含的放射性总量得到更准确的量化。
A method for estimation of organ volume is proposed, based on analysis of individual slices obtained from SPET images. In a phantom simulating clinical circumstances, the data show that the level a threshold at 46% of the maximum activity predicts most closely the true volume over a wide range above one liter. The level at 45% predicted better volumes of less than one liter. For phantoms of 839 ml or less, the error was 6.3 ml (one standard error of estimation). This level seems to be independent of the plane or position of the phantom and also independent of the amount of scattering material around it. Nonradioactive voids ("holes") within a phantom may be included or excluded at will when their edges are not tangent to the edge of the phantom. In such cases, their edges are not distinguishable from the edge of the phantom and their volumes are excluded. Knowledge of organ volumes has both diagnostic and therapeutic importance and could lead to a more precisely quantitated total of the radioactivity contained in an organ or space.