一种基于图形的多尺度方法与知识蒸用于WSI分类
IEEE transactions on medical imaging
|November 28, 2023
概括
本研究介绍了DAS-MIL,这是一种基于图形的全幻灯片图像 (WSI) 分类的新型多级多实例学习 (MIL) 方法. 通过考虑空间相关性和多尺度信息,DAS-MIL提高了诊断准确性,优于现有方法.
科学领域:
- 计算病理学计算病理学
- 数字病理学数字病理学
- 机器学习在医疗保健中的应用
背景情况:
- 整张幻灯片图像 (WSI) 对于癌症诊断至关重要,但其尺寸为千兆像素,使得像素级注释不可行.
- 现有的多实例学习 (MIL) 方法用于WSI分类,往往忽略空间实例相关性和单级分辨率.
研究的目的:
- 为WSI分类开发一种先进的MIL方法,解决当前方法的局限性.
- 通过结合空间实例相关性,充分利用多尺度WSI数据的全部潜力.
主要方法:
- 提出了DAS-MIL,一个基于图形的多尺度MIL框架.
- 集成了一个自我监督的特征提取器.
- 采用基于图形的架构来模拟尺度间和尺度内空间实例的相关性.
- 在分辨率之间利用自蒸损失来弥合信息差距.
主要成果:
- 在WSI分类任务中,DAS-MIL表现出了卓越的性能.
- 在Camelyon16基准指标上实现了+2.7%的AUC和+3.7%的精度改进.
- 在WSI分类中超越了最先进的 (SOTA) 方法.
结论:
- 拟议的基于图形的多尺度MIL方法有效地增强了WSI分类.
- 通过考虑空间相关性和多尺度信息,DAS-MIL提供了更加上下文化的表示.
- 这一框架为改善数字病理学的自动诊断提供了一个有希望的方向.
相关概念视频
Introduction to Scalers
Many familiar physical quantities can be specified completely by giving a single number and the appropriate unit. For example, "a class period lasts 50 min," or "the gas tank in my car holds 65 L," or "the distance between the two posts is 100 m." A physical quantity that can be specified completely in this manner is called a scalar quantity. The word "scalar" is a synonym for "number." Time, mass, distance, length, volume, temperature, and energy are some examples of scalar quantities.
Scalar...
Scalar...
Classification of Systems-I
Linearity is a system property characterized by a direct input-output relationship, combining homogeneity and additivity.
Homogeneity dictates that if an input x(t) is multiplied by a constant c, the output y(t) is multiplied by the same constant. Mathematically, this is expressed as:
Homogeneity dictates that if an input x(t) is multiplied by a constant c, the output y(t) is multiplied by the same constant. Mathematically, this is expressed as:
Classification of Systems-II
Continuous-time systems have continuous input and output signals, with time measured continuously. These systems are generally defined by differential or algebraic equations. For instance, in an RC circuit, the relationship between input and output voltage is expressed through a differential equation derived from Ohm's law and the capacitor relation,
Graphical Representation of Inequalities
The graph of the equation where y equals x squared forms a curve known as a parabola. This curve acts as a boundary in the coordinate plane, dividing it into distinct regions based on the relative position of points.When the equality sign in the equation is replaced with an inequality—such as greater than, less than, greater than or equal to, or less than or equal to—the graphical representation changes from a single curve into a broader shaded area that signifies the set of all points...


