To review the effectiveness of high-resolution computed tomography in making a diagnosis of tympanosclerosis and its reliability in predicting the postoperative period based on the result of hearing restoration, also based on radiological and surgical data. Methods: A retrospective survey was conducted in diagnostic and treatment institutions, and tympanoplasty was performed for chronic suppurative otitis media (CSOM) 200 ear. In March 2020 and 2021 of the same month, preoperative MSCT images of the temporal bone were reviewed, to verify the prognosis of tympanosclerosis and the integrity of the auditory ossicles. The integrity of the ossicular chain was checked both preoperatively and postoperatively using audiometry (air-bone conduction (ABG)) and the results were assessed: postoperative successful outcome was a tone frequency and sound volume level of 20 dB or less. Results: The study was conducted on 200 ears that underwent tympanoplasty for CSOM, of which 130 out of 200 (49%) ears had tympanosclerosis localized in the eardrum, discovered during surgery (tympanoplasty), ears were affected in 41 out of 130 (30, 1%), Incus-malleus ossicular ligament disorders occurred in 19 of 41 ears. 11 ears with a disorder of the stapes bone, and 6 with a disorder of the connection of all three bones. In the remaining 70 cases, a scan of the temporal bone revealed the integrity of all hearing bones and their conductivity. After 6 months, during repeated observation of patients, audiological results of fixation with sensitivity were obtained (95.1%) and specificity (93.8%). Conclusions: Based on the conducted research, it is possible to draw the following conclusion: for otolaryngologists, MSCT in combination with clinical data serves to effectively assess the extent of the lesion, as well as inform for the postoperative prognosis for tympanosclerosis.

Chronic suppurative otitis media, MSCT of the middle ear, reconstruction of the auditory ossicular chain

Modern principles of diagnosis and treatment of patients with chronic purulent otitis media Garov E.V., Garova E.E. // RMZh.-2012.- No. 27.-P.1355-1359

Modern approaches to the diagnosis and treatment of exacerbations of chronic suppurative otitis media in children Baranov K.K., Bogomilsky M.R., Minasyan V.S. // Bulletin of the Russian State Medical University. 2015. No. 1.-P.41-45

Multislice computed tomography in the diagnosis of diseases of the middle ear Bodrova I.V//Medical visualization.-2010.-No.3.-S. 19-32

Computed tomography in the diagnosis of mastoid structure types in normal conditions and in chronic otitis media Skakun M.A., Skakun A.V., Dubinets I.D. // Bulletin SMUS74. 2019. No. 1 (24).-P.64-67

Computed tomography as a way to study the structure of the temporal bone and identify possible causes of hearing loss in children Dmitrieva A.N. // Healthcare of Chuvashia.-2016.-No.2.-S. 42-45

Assessment of surgically significant anthropometric indicators of the structures of the middle ear using cone-beam computed tomography (CBCT) Elizaveta Antonovna Azovtseva // Russian Otorhinolaryngology. 2015. No. 2 (75).-P.

Surgically significant features of the anatomical structure of the labyrinthine wall of the tympanic cavity in patients with otosclerosis, identified by cone-beam computed tomography. Azovtseva E.A., Zubareva A.A., Filimonov V.N. // Russian otorhinolaryngology. 2016. No. 3 (82).-P.11-15

The Role of Preoperative Computed Tomography of Temporal Bone in Atticotomy as a New Tool for Determining the Approach. Abdelaziz AA//Indian J Otolaryngol Head Neck Surg. 2019 Nov;71(Suppl 2):1272-1275.

Evaluation of the Mastoid Emissary Canals with Computerized Tomography in Patients with Chronic Otitis Media. Ozen O, Sahin C.//J Neurol Surg B Skull Base. 2020 Feb;81(1):82-87. doi: 10.1055/s-0039-3399518

Fusion of Computed Tomography and PROPELLER Diffusion-Weighted Magnetic Resonance Imaging for the Detection and Localization of Middle Ear Cholesteatoma. Locketz GD, Li PM, Fischbein NJ, Holdsworth SJ, Blevins NH. //JAMA Otolaryngol Head Neck Surg. 2016 Oct 1;142(10):947-953