Increasing the acquisition speed in oblique plane microscopy via aliasing.

IF 2.9 2区 医学 Q2 BIOCHEMICAL RESEARCH METHODS
Conor McFadden, James D Manton, Holly Merta, Reto Fiolka
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引用次数: 0

Abstract

Oblique plane microscopy (OPM), a variant of light-sheet fluorescence microscopy (LSFM), enables rapid volumetric imaging without mechanically scanning the sample or an objective. In an OPM, the sample space is mapped to a distortion-free image space via remote focusing, and the oblique light-sheet plane is mapped onto a camera via a tilted tertiary imaging system. As a result, the 3D point-spread function and optical transfer function (OTF) are tilted to the optical axis of the tertiary imaging system. To satisfy Nyquist sampling, small scanning steps are required to encompass the tilted 3D OTF, slowing down acquisition and increasing sample exposure. Here, we show that a judicious amount of under-sampling can lead to a form of aliasing in OPM that can be recovered without a loss of spatial resolution while minimizing artifacts. The resulting speed gains depend on the optical parameters of the system and reach 2-4-fold in our demonstrations. We leverage this method for rapid subcellular 3D imaging of mitochondria and the endoplasmic reticulum.

通过混叠提高斜面显微镜的采集速度。
斜平面显微镜(OPM)是光片荧光显微镜(LSFM)的一种变体,无需机械扫描样品或物镜即可实现快速体积成像。在OPM中,通过远程聚焦将样品空间映射到无失真的图像空间,并通过倾斜三级成像系统将倾斜光片平面映射到相机上。这使得三维点扩散函数和光传递函数(OTF)向三次成像系统的光轴倾斜。为了满足奈奎斯特采样,需要较小的扫描步长来覆盖倾斜的3D OTF,从而减慢采集速度并增加样品曝光。在这里,我们表明,适当的欠采样量会导致OPM中的一种混叠形式,这种混叠可以在不损失空间分辨率的情况下恢复,同时最小化伪影。由此产生的速度增益取决于系统的光学参数,在我们的演示中达到2-4倍。我们利用这种方法对线粒体和内质网进行快速亚细胞三维成像。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Biomedical optics express
Biomedical optics express BIOCHEMICAL RESEARCH METHODS-OPTICS
CiteScore
6.80
自引率
11.80%
发文量
633
审稿时长
1 months
期刊介绍: The journal''s scope encompasses fundamental research, technology development, biomedical studies and clinical applications. BOEx focuses on the leading edge topics in the field, including: Tissue optics and spectroscopy Novel microscopies Optical coherence tomography Diffuse and fluorescence tomography Photoacoustic and multimodal imaging Molecular imaging and therapies Nanophotonic biosensing Optical biophysics/photobiology Microfluidic optical devices Vision research.
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