Comparison of the channelized Hotelling and human observers for lesion detection in hepatic SPECT imaging
Comparison of the channelized Hotelling and human observers for lesion detection in hepatic SPECT imaging
复制标题
通道化 Hotelling 和人类观察者在肝脏 SPECT 成像中病变检测的比较
DOI：
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
E. Soares
中科院分区：
文献类型：
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作者：
M. King;D. de Vries;E. Soares
通道化霍特林模型观察者的相对排名进行了比较，人类观察者的任务，检测模拟肝SPECT切片中的“热”肿瘤。使用三个切片位置中的每一个的八十个图像来确定信噪比（SNR）。调查的获取和处理策略是：（1）仅对初级光子成像，（2）在Tc-99 m的20%对称能量窗口内对初级加散射成像，（3）利用初级加升高量的散射成像，（4）初级加散射采集的基于能量谱的散射补偿，以及（5）对具有升高的散射量的采集进行基于能量谱的散射补偿。将方形非重叠通道（SQR）和重叠高斯差分通道（DOG）合并到Hotelling模型观测器中。当散射补偿结果被排除在外，两个通道化霍特林模型观察员表现出很强的相关性与人类观察员的排名。在包括散射补偿结果的情况下，只有DOG模型观察者在p = 0.05水平下拒绝了无相关性的零假设。它的结论是，进一步调查的信道模型与霍特林观察员，以确定是否可以获得更好的相关性。
The relative rankings of the channelized Hotelling model observer were compared to those of the human observers for the task of detecting 'hot' tumors in simulated hepatic SPECT slices. The signal-to-noise ratios (SNRs) were determined using eighty images for each of three slice locations. The acquisition and processing strategies investigated were: (1) imaging solely primary photons, (2) imaging primary plus scatter within a 20% symmetric energy window for Tc-99m, (3) imaging with primary plus an elevated amount of scatter, (4) energy-spectrum-based scatter compensation of the primary plus scatter acquisitions, and (5) energy-spectrum-based scatter compensation of the acquisitions with an elevated amount of scatter. Both square non-overlapping channels (SQR), and overlapping difference- of-Gaussian channels (DOG) were incorporated into the Hotelling model observer. When the scatter compensation results were excluded, both channelized Hotelling model observers exhibited a strong correlation with the rankings of the human-observers. With the inclusion of the scatter compensation results, only with the DOG model observer was the null-hypothesis of no correlation rejected at the p equals 0.05 level. It is concluded that further investigation of the channel model used with the Hotelling observer is indicated to determine if better correlation can be obtained.
DOI：
10.1364/josaa.4.002447
发表时间：
1987-12-01
影响因子：
1.9
作者：
MYERS, KJ;BARRETT, HH
通讯作者：
BARRETT, HH
一种用于散射校正的双光峰窗方法。
DOI：
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发表时间：
1992
期刊：
Journal of nuclear medicine : official publication, Society of Nuclear Medicine
影响因子：
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作者：
King,MA;Hademenos,GJ;Glick,SJ
通讯作者：
Glick,SJ