Abstract:
:Mucositis is the limiting toxicity of radio(chemo)therapy of head and neck cancer. Diagnostics, prophylaxis and correction of this condition demand new accurate and objective approaches. Here we report on an in vivo longitudinal monitoring of the oral mucosa dynamics in 25 patients during the course of radiotherapy of oropharyngeal and nasopharyngeal cancer using multifunctional optical coherence tomography (OCT). A spectral domain OCT system with a specially-designed oral imaging probe was used. Microvasculature visualization was based on temporal speckle variations of the full complex signal evaluated by high-pass filtering of 3D data along the slow scan axis. Angiographic image quantification demonstrated an increase of the vascular density and total length of capillary-like-vessels before visual signs or clinical symptoms of mucositis occur. Especially significant microvascular changes compared to their initial levels occurred when grade two and three mucositis developed. Further, microvascular reaction was seen to be dose-level dependent. OCT monitoring in radiotherapy offers a non-invasive, convenient, label-free quantifiable structural and functional volumetric imaging method suitable for longitudinal human patient studies, furnishing fundamental radiobiological insights and potentially providing useful feedback data to enable adaptive radiotherapy (ART).
journal_name
Sci Repjournal_title
Scientific reportsauthors
Maslennikova AV,Sirotkina MA,Moiseev AA,Finagina ES,Ksenofontov SY,Gelikonov GV,Matveev LA,Kiseleva EB,Zaitsev VY,Zagaynova EV,Feldchtein FI,Gladkova ND,Vitkin Adoi
10.1038/s41598-017-16823-2subject
Has Abstractpub_date
2017-11-28 00:00:00pages
16505issue
1issn
2045-2322pii
10.1038/s41598-017-16823-2journal_volume
7pub_type
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