title: Introduction: feature issue on In Vivo Microcirculation Imaging.
abstract: The editors introduce the Biomedical Optics Express feature issue, "In Vivo Microcirculation Imaging," which includes 14 contributions from the biomedical optics community, covering such imaging techniques as optical coherence tomography, photoacoustic microscopy, laser Doppler /speckle imaging, and near infrared spectroscopy and fluorescence imaging.
authors.forename: Andrew K
authors.initials: AK
authors.lastname: Dunn
authors.forename: Rainer
authors.initials: R
authors.lastname: Leitgeb
authors.forename: Ruikang K
authors.initials: RK
authors.lastname: Wang
authors.forename: Hao F
authors.initials: HF
authors.lastname: Zhang