Microscopy with UV surface excitation (MUSE) for slide-free histology and pathology imaging

Farzad Fereidouni, Ananya Datta-Mitra, Stavros G Demos, Richard Levenson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

21 Scopus citations


A novel microscopy method that takes advantage of shallow photon penetration using ultraviolet-range excitation and exogenous fluorescent stains is described. This approach exploits the intrinsic optical sectioning function when exciting tissue fluorescence from superficial layers to generate images similar to those obtainable from a physically thinsectioned tissue specimen. UV light in the spectral range from roughly 240-275 nm penetrates only a few microns into the surface of biological specimens, thus eliminating out-of-focus signals that would otherwise arise from deeper tissue layers. Furthermore, UV excitation can be used to simultaneously excite fluorophores emitting across a wide spectral range. The sectioning property of the UV light (as opposed to more conventional illumination in the visible range) removes the need for physical or more elaborate optical sectioning approaches, such as confocal, nonlinear or coherent tomographic methods, to generate acceptable axial resolution. Using a tunable laser, we investigated the effect of excitation wavelength in the 230-350 nm spectral range on excitation depth. The results reveal an optimal wavelength range and suggest that this method can be a fast and reliable approach for rapid imaging of tissue specimens. Some of this range is addressable by currently available and relatively inexpensive LED light sources. MUSE may prove to be a good alternative to conventional, time-consuming, histopathology procedures.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
ISBN (Print)9781628414080
StatePublished - 2015
EventOptical Biopsy XIII: Toward Real-Time Spectroscopic Imaging and Diagnosis - San Francisco, United States
Duration: Feb 10 2015Feb 11 2015


OtherOptical Biopsy XIII: Toward Real-Time Spectroscopic Imaging and Diagnosis
Country/TerritoryUnited States
CitySan Francisco


  • Fluorescence imaging
  • Histology
  • Microscopy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging


Dive into the research topics of 'Microscopy with UV surface excitation (MUSE) for slide-free histology and pathology imaging'. Together they form a unique fingerprint.

Cite this