SPECT均匀衰减投影数据的反演公式  

Inversion Formula from Uniformly Attenuated SPECT Projection Data

作　　者：常生明 王金平[1] 

机构地区：[1]宁波大学理学院,浙江宁波315211

出　　处：《宁波大学学报（理工版）》2015年第2期56-59,共4页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：国家自然科学基金(61271398)

摘　　要：依据近年来公开发表的有关单光子发射断层成像(SPECT)成像技术的文献,探索SPECT均匀衰减投影数据的反投影问题.主要采用指数型拉动变换的性质和构造特殊函数—–δ函数的方法,进而应用δ函数的特殊性得到了一个精确的反演公式.结果表明,由这种方法得到的反演公式能够更加有效和精确地实现图像的重建.Based on the recently published literature on SPECT imaging technology, the projection problem of the SPECT homogeneous attenuation projection data is explored in a bid to obtain a more accurate inversion formula. Based on the nature of the exponential transform and the method of constructing special function-δ function, an accurate inversion formula is attained by further applying the particularity of the function. The results show that the obtained inversion formula can implement image reconstruction in a more effective and accurate way.

关 键 词：单光子发射断层成像 指数型拉动变换 反演公式 Δ函数 

分 类 号：Q819[生物学—生物工程]