基于霍特林观察者在检测任务中的表现对圆形锥束CT图像重建算法的分析。

Analysis of image-reconstruction algorithms for circular, cone-beam CT by Hotelling observer performance on a detection task.

作者信息

Sidky Emil Y, Pan Xiaochuan

机构信息

University of Chicago, Department of Radiology, Chicago, IL 60637, USA.

出版信息

Annu Int Conf IEEE Eng Med Biol Soc. 2009;2009:997-9. doi: 10.1109/IEMBS.2009.5333643.

DOI:10.1109/IEMBS.2009.5333643

PMID:19964255

Abstract

We apply task-based evaluation methods to image-reconstruction in circular cone-beam CT. The particular task considered is that of detection of a micro-calcification of known location in a known background; namely a signal-known-exactly/background-known-exactly (SKE/BKE) detection task. The image-reconstruction algorithms are evaluated based on efficiency for detection. This task-based metric can be applied to any linear image-reconstruction algorithm, such as the FDK algorithm or other more recent approximate methods for image-reconstruction in circular, cone-beam CT.

摘要

我们将基于任务的评估方法应用于圆锥束CT中的图像重建。所考虑的特定任务是在已知背景中检测已知位置的微钙化；即信号完全已知/背景完全已知（SKE/BKE）检测任务。基于检测效率对图像重建算法进行评估。这种基于任务的指标可应用于任何线性图像重建算法，如FDK算法或其他用于圆锥束CT图像重建的更新的近似方法。