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Research Papers

Resolution in the ApoTome and the confocal laser scanning microscope: comparison

[+] Author Affiliations
Arwed Weigel, Detlev Schild, André Zeug

University of Göttingen, Department of Neurophysiology and Cellular Biophysics, Humboldtallee 23, 37073 Göttingen, Germany and Deutsche Forschungsgemeinschaft-Research Center for the Molecular Physiology of the Brain (FZT 103), Göttingen, Germany

J. Biomed. Opt. 14(1), 014022 (February 25, 2009). doi:10.1117/1.3083439
History: Received August 25, 2008; Revised December 22, 2008; Accepted December 23, 2008; Published February 25, 2009; April 18, 2011; Online February 25, 2009
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The essential feature of the confocal laser scanning microscope (cLSM) is the generation of optical sections by the removal of out-of-focus light. About ten years ago, structured illumination microscopy (SIM) was introduced as an alternative method for obtaining optical sections from biological specimens. Here we compare the resolution of the ApoTome (commercial SIM by Zeiss) to that achieved by a cLSM (Zeiss LSM 510). If fluorescent beads are used as test objects, then the ApoTome will achieve a lower axial resolution than the cLSM. In contrast to that, its lateral resolution scores slightly better. If subresolution homogeneous fluorescent layers are used as test objects, then the ApoTome will achieve a higher axial resolution than the cLSM. The ApoTome’s axial resolution is homogeneous over the field-of-view while that of the cLSM changes markedly. Finally, the anisotropy of the ApoTome’s resolution was found to be negligible for standard applications while its capability to resolve fine structures within stained tissue slices is limited to one or two cell layers and thus worse than in the cLSM.

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© 2009 Society of Photo-Optical Instrumentation Engineers

Citation

Arwed Weigel ; Detlev Schild and André Zeug
"Resolution in the ApoTome and the confocal laser scanning microscope: comparison", J. Biomed. Opt. 14(1), 014022 (February 25, 2009). ; http://dx.doi.org/10.1117/1.3083439


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