@Article{Sinha2019, author="Sinha, Ayushi and Ishii, Masaru and Hager, Gregory D. and Taylor, Russell H.", title="Endoscopic navigation in the clinic: registration in the absence of preoperative imaging", journal="International Journal of Computer Assisted Radiology and Surgery", year="2019", month="May", day="31", abstract="Clinical examinations that involve endoscopic exploration of the nasal cavity and sinuses often do not have a reference preoperative image, like a computed tomography (CT) scan, to provide structural context to the clinician. The aim of this work is to provide structural context during clinical exploration without requiring additional CT acquisition.", issn="1861-6429", doi="10.1007/s11548-019-02005-0", url="https://doi.org/10.1007/s11548-019-02005-0" }