TY - JOUR A1 - Proppert, Sven A1 - Wolter, Steve A1 - Holm, Thorge A1 - Klein, Theresa A1 - van de Linde, Sebastian A1 - Sauer, Markus T1 - Cubic B-spline calibration for 3D super-resolution measurements using astigmatic imaging JF - Optics Express N2 - In recent years three-dimensional (3D) super-resolution fluorescence imaging by single-molecule localization (localization microscopy) has gained considerable interest because of its simple implementation and high optical resolution. Astigmatic and biplane imaging are experimentally simple methods to engineer a 3D-specific point spread function (PSF), but existing evaluation methods have proven problematic in practical application. Here we introduce the use of cubic B-splines to model the relationship of axial position and PSF width in the above mentioned approaches and compare the performance with existing methods. We show that cubic B-splines are the first method that can combine precision, accuracy and simplicity. KW - three-dimensional microscopy KW - fluorescence microscopy KW - medical and biological imaging KW - superresolution Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-119730 SN - 1094-4087 VL - 22 IS - 9 ER -