METHOD FOR DIAGNOSTICS OF EXUDATIVE OTITIS MEDIA Russian patent published in 2022 - IPC A61B6/03 

FIELD: medicine; otorhinolaryngology.

SUBSTANCE: invention relates to medicine, namely to the field of otorhinolaryngology; it can be used for diagnostics of exudative otitis media. OCT data is recorded from both the area of the external auditory canal and the tympanic cavity. During calculations based on received OCT data, histograms of brightness distribution are built for the tympanic cavity (HIST_TC) and for the area of the external auditory canal (HIST_AC) in the range from zero to the maximum value of brightness B_max, used in a palette of OCT image. For each HIST_TC and HIST_AC histogram, assessed brightness M_TC and M_AC, positions of centers C_TC and C_AC, respectively, as well as a value of a semi-width S_AC are calculated. The first characteristics indicator EPres is calculated as the ratio of the difference of assessed brightness M_TC and M_AC to the value of the semi-width S_AC of HIST_AC histogram. The second characteristic indicator ECond is calculated as the ratio of the difference of positions of centers C_TC and C_AC to the value of the semi-width S_AC of HIST_AC histogram. The value of the first characteristic indicator EPres is compared with a reference value RefPres = 1, and if EPres > RefPres, a conclusion is made on the presence of exudate in the tympanic cavity. Exudate viscosity is assessed by comparison of the value of the second characteristic indicator ECond with a reference value RefCond = 1. If ECond > RefCond, a conclusion is made on high exudate viscosity. If ECond < RefCond, a conclusion is made on low exudate viscosity. At the same time, assessed brightness M_TC and M_AC are determined as maximum values of brightness for each HIST_TC and HIST_AC histogram, respectively. Positions of centers C_TC and C_AC are determined by calculation of a median for each HIST_TC and HIST_AC histogram, respectively.

EFFECT: method provides for objective and non-invasive detection and assessment of exudate in the tympanic cavity due to determination of characteristic indicators based on OCT data of the area of the external auditory canal and the tympanic cavity.

6 cl, 11 dwg