The event database contains all event-related information for the World of Photonics Congress.
Poster Hall B0 European Conferences on Biomedical Optics (ECBO) > Preclinical and Clinical Optical Diagnostics > Lunch Break and Poster Session - Monday
12:45-14:15 h | Hall B0 Hall B0, ICM
Subjects: Biophotonics and Medical Engineering
Diagnosis of inflammatory diseases of the paranasal sinuses is one of the urgent problems of modern otolaryngology. Presently, radiography, computed tomography, magnetic resonance imaging, rhinoscopy and ultrasound are used to identify these pathologies. However, due to use of roentgen radiation during the study, a high level of false-negative results and painfulness of the diagnostic procedures, application of these methods is limited. To overcome these shortcomings, the application of the digital diaphanoscopy method seems to be promising. For realization of this approach the experimental setup was designed and assembled. Low-intensity radiation of the visible and near IR ranges and CCD-camera were used for translucence of the paranasal sinuses and visualizing the pattern of scattering light. Conducted preliminary studies revealed a high impact of external illumination of the study area on the result of visualization. To minimize the influence of this factor, a protective screen was designed to exclude of external illumination. To identify the range of exposure values of the CCD-camera to obtain maximum sensitivity to identify of pathological changes, experimental studies were conducted on healthy volunteers. During the studies an exposure value of CCD-camera changed in the range from 0 to 39.76 ms with a step of 1 ms. The results of study more 30 volunteers of different genders and ages showed variations in the scattering patterns with the same exposure value. This was explained by such anatomic features as the structure of the skin, the thickness of the skull bone tissue, the size of the sinuses and their asymmetry.