The study is devoted to the comparative analysis of the data received in patients with COVID-19 lung pathology using the method of probe-based confocal laser endomicroscopy of distal airways and two reference methods: high resolution computed tomography and morphology (in some patients).
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
15
Alveoflex uses 488nm laser, generating real time moving images with an optical area of 600μm at a video frame rate of 12 images per second and a focus depth of 50μm
Federal Research Clinical Center FMBA Russia
Moscow, Russia
RECRUITINGNumber of COVID-19 Participants With Notable Differences in the pCLE images in comparison with the pCLE images of non-COVID-19 Participants
pCLE images are assessed morphometrically. Such criteria as quantity of alveolar macrophages, quantity of floating intraalveolar substances etc. are measured using a 6-point score, where zero means the absence of the symptom and 5 means the maximal expressiveness. Thickness of interalveolar septum, diameter of microvessels and thickness of elastic fibers are measured using a special tool with the included software for the endomicroscopic system. Radiologic signs e.g. low-density areas and consolidation areas are assessed in Hounsfield Units. Other radiologic signs e.g. groundglass opacity, crazy paving patterns etc. are measured by a 5-point scale, where zero means the absence of the symptom and 4 means the maximal expressiveness. The morphological analysis of the lung tissue specimens (received as a result of autopsy/transbronchial biopsy) is made according to the structures in pCLE images for 20 fields of view.
Time frame: up to one year
Number of Participants With the Correspondence of pCLE Images to High Resolution Computer Tomography and Morphologic Data as a Measure of Specificity and Sensitivity of the Method
pCLE images are assessed morphometrically. Such criteria as quantity of alveolar macrophages, quantity of floating intraalveolar substances etc. are measured using a 6-point score, where zero means the absence of the symptom and 5 means the maximal expressiveness. Thickness of interalveolar septum, diameter of microvessels and thickness of elastic fibers are measured using a special tool with the included software for the endomicroscopic system. Radiologic signs e.g. low-density areas and consolidation areas are assessed in Hounsfield Units. Other radiologic signs e.g. groundglass opacity, crazy paving patterns etc. are measured by a 5-point scale, where zero means the absence of the symptom and 4 means the maximal expressiveness. The morphological analysis of the lung tissue specimens (received as a result of autopsy/transbronchial biopsy) is made according to the structures in pCLE images for 20 fields of view.
Time frame: up to one year
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