title: Dual-wavelength linear regression phase unwrapping in three-dimensional microscopic images of cancer cells.
abstract: We present a study of the three-dimensional structure of cancer cells using dual-wavelength phase-imaging digital holographic microscopy. Phase imaging of objects with optical height variation greater than the wavelength of light is ambiguous and causes phase wrapping. By comparing two phase images recorded at different wavelengths, the images can be accurately unwrapped. The unwrapping method is computationally fast and straightforward, and it can process complex topologies. Additionally, the limitations on the total optical height are significantly relaxed. This new methodology is widely applicable to other phase-imaging techniques as well as in applications beyond optical microscopy.
authors.affiliation: Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA. akhmalad@umich.edu
authors.forename: Alexander
authors.initials: A
authors.lastname: Khmaladze
authors.forename: Rebecca L
authors.initials: RL
authors.lastname: Matz
authors.forename: Chi
authors.initials: C
authors.lastname: Zhang
authors.forename: Ting
authors.initials: T
authors.lastname: Wang
authors.forename: Mark M Banaszak
authors.initials: MM
authors.lastname: Holl
authors.forename: Zhan
authors.initials: Z
authors.lastname: Chen
mesh_terms: D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007624:KB Cells; D016014:Linear Models; D008853:Microscopy / Q000379:methods*; D010051:Ovarian Neoplasms / Q000473:pathology