Exact confidence intervals for channelized Hotelling observer performance in image quality studies.
Exact confidence intervals for channelized Hotelling observer performance in image quality studies.
复制标题
图像质量研究中通道化霍特林观察者性能的精确置信区间。
DOI:
10.1109/tmi.2014.2360496
复制
发表时间:
2015
影响因子:
10.6
通讯作者:
Heilbrun,MartaE
中科院分区:
文献类型:
--
作者:
Wunderlich,Adam;Noo,Frederic;Gallas,BrandonD;Heilbrun,MartaE
Task-based assessments of image quality constitute a rigorous, principled approach to the evaluation of imaging system performance. To conduct such assessments, it has been recognized that mathematical model observers are very useful, particularly for purposes of imaging system development and optimization. One type of model observer that has been widely applied in the medical imaging community is the channelized Hotelling observer (CHO), which is well-suited to known-location discrimination tasks. In the present work, we address the need for reliable confidence interval estimators of CHO performance. Specifically, we show that the bias associated with point estimates of CHO performance can be overcome by using confidence intervals proposed by Reiser for the Mahalanobis distance. In addition, we find that these intervals are well-defined with theoretically-exact coverage probabilities, which is a new result not proved by Reiser. The confidence intervals are tested with Monte Carlo simulation and demonstrated with two examples comparing X-ray CT reconstruction strategies. Moreover, commonly-used training/testing approaches are discussed and compared to the exact confidence intervals. MATLAB software implementing the estimators described in this work is publicly available at http://code.google.com/p/iqmodelo/.
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影响因子:
7.8
作者:
N. Hirokawa
通讯作者:
N. Hirokawa
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
G. W. Bartelmez;‘Pfst. 111’ Normentafel;Carnegie Coll;Dandy;New York.;Univ Coll.;Wallin
通讯作者:
Wallin
影响因子:
2.5
作者:
C. Dechesne;A. Sans;A. Keller
通讯作者:
A. Keller
DOI:
--
发表时间:
1958
期刊:
Journal of embryology and experimental morphology
影响因子:
--
作者:
E. Batten
通讯作者:
E. Batten
影响因子:
2.8
作者:
Zhou,XN;VandeWater,TR
通讯作者:
VandeWater,TR