School of Electrical Engineering, Zhengzhou University, Zhengzhou, 450001, China.
State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Center for Magnetic Resonance, Innovation Academy for Precision Measurement Science and Methodology, Chinese Academy of Sciences, Wuhan, 430071, China.
Med Biol Eng Comput. 2022 Feb;60(2):487-500. doi: 10.1007/s11517-021-02495-8. Epub 2022 Jan 11.
An important step in brain image analysis is to divide specific brain regions by matching brain slices to standard brain reference atlases, and perform statistical analysis on the labeled neurons in each brain region. Taking mouse fluorescently labeled brain slices as an example, due to the noise and distortion introduced during the preparation of brain slices, and the modal differences with standard brain atlas, the brain slices cannot directly establish an accurate one-to-one correspondence with the brain atlas, which in turn affects the accuracy of the number of labeled neurons in each brain region. This paper introduces the idea of image representation, uses neural networks to realize the registration of different modal mouse brain slices and brain atlas, completes the regional localization of the brain slices, and uses threshold segmentation to detect and count the labeled neurons in each brain region. The method proposed in this paper can effectively solve the problem of large deviation of neurons count caused by the inaccurate division of brain regions in large deformed brain slices, and can automatically realize accurate count of labeled neurons in each brain region of brain slices. The whole framework of method for counting labeled neurons in mouse brain regions based on image representation and registration.
脑图像分析的一个重要步骤是通过将脑切片与标准脑参考图谱匹配来划分特定的脑区,并对每个脑区中的标记神经元进行统计分析。以荧光标记的小鼠脑切片为例,由于脑切片制备过程中引入的噪声和变形,以及与标准脑图谱的模态差异,脑切片不能直接与脑图谱建立准确的一一对应关系,从而影响每个脑区中标记神经元的数量的准确性。本文介绍了图像表示的思想,使用神经网络实现不同模态的小鼠脑切片和脑图谱的配准,完成脑切片的区域定位,并使用阈值分割检测和计数每个脑区的标记神经元。本文提出的方法可以有效地解决由于大脑切片的大变形导致脑区划分不准确而导致神经元计数偏差较大的问题,并可以自动实现脑切片中每个脑区标记神经元的精确计数。基于图像表示和配准的小鼠脑区标记神经元计数方法的整体框架。