Can the spherical gold standards be used as an alternative to painted gold standards for the computerized detection of lesions using voxel-based classification?
Can the spherical gold standards be used as an alternative to painted gold standards for the computerized detection of lesions using voxel-based classification?
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DOI：
10.1007/s11604-018-0784-6
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发表时间：
2019-03-01
影响因子：
2.1
通讯作者：
Abe, Osamu
中科院分区：
文献类型：
--
作者：
Nomura, Yukihiro;Hayashi, Naoto;Abe, Osamu
为了开发使用基于体素分类的计算机辅助检测（CAD）软件，需要通过逐像素绘制定义的金标准，称为绘制金标准。然而，对于定义黄金标准的放射科医生来说，一种简化的定义方法是可取的。定义金本位的最简单方法之一是一个球形区域，称为球形金本位。在这项研究中，我们调查了球形金标准是否可以作为一种替代，涂金标准的计算机检测使用基于体素classification.Materials和methodsThe球形金标准的重心和最大直径确定。我们比较了两种类型的金标准，涂金标准和球形金标准，由两种类型的CAD软件，使用基于体素的classification.ResultsThe所需的时间，油漆面积的一个病变是4.7-6.5倍，所需的时间来定义一个球形金标准。对于相同性能的CAD软件，球形金标准所需的培训案例的数量是1.6-7.6倍，为彩绘金standards.ConclusionSpherical金标准可作为一种替代彩绘金标准的计算机检测病变的简单形状。
PurposeFor the development of computer-assisted detection (CAD) software using voxel-based classification, gold standards defined by pixel-by-pixel painting, called painted gold standards, are desirable. However, for radiologists who define gold standards, a simplified method of definition is desirable. One of the simplest methods of defining gold standards is a spherical region, called a spherical gold standard. In this study, we investigated whether spherical gold standards can be used as an alternative to painted gold standards for computerized detection using voxel-based classification.Materials and methodsThe spherical gold standards were determined by the center of gravity and the maximum diameter. We compared two types of gold standard, painted gold standards and spherical gold standards, by two types of CAD software using voxel-based classification.ResultsThe time required to paint the area of one lesion was 4.7-6.5 times longer than the time required to define a spherical gold standard. For the same performance of the CAD software, the number of training cases required for the spherical gold standard was 1.6-7.6 times that for the painted gold standards.ConclusionSpherical gold standards can be used as an alternative to painted gold standards for the computerized detection of lesions with simple shapes.