Comparison of Conventional Versus Spiral Computed Tomography with Three Dimensional Reconstruction in Chronic Otitis Media with Ossicular Chain Destruction
| Autor: | Mahboobeh Adami Dehkordi, Sirous Seifirad, Sasan Einolghozati, Nafiseh Ghaffarian Eidgahi Moghadam, Soroush Seifirad, Saeed Naghibi, Amir Akhavan Rezayat |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
medicine.medical_specialty
medicine.medical_treatment Mastoidectomy Surgical planning 03 medical and health sciences 0302 clinical medicine Head & Neck Imaging medicine otorhinolaryngologic diseases Radiology Nuclear Medicine and imaging Tympanic cavity 030223 otorhinolaryngology Cholesteatoma Tomography Spiral Ossicles business.industry Tympanoplasty medicine.disease Spiral computed tomography Surgery Otitis Media medicine.anatomical_structure 030220 oncology & carcinogenesis Spiral Computed Nuclear medicine business |
| Zdroj: | Iranian Journal of Radiology |
| ISSN: | 1735-1065 |
| Popis: | Background: Chronic otitis media (COM) can be treated with tympanoplasty with or without mastoidectomy. In patients who have undergone middle ear surgery, three-dimensional spiral computed tomography (CT) scan plays an important role in optimizing surgical planning. Objectives: This study was performed to compare the findings of three-dimensional reconstructed spiral and conventional CT scan of ossicular chain study in patients with COM. Patients and Methods: Fifty patients enrolled in the study underwent plane and three dimensional CT scan (PHILIPS-MX 8000). Ossicles changes, mastoid cavity, tympanic cavity, and presence of cholesteatoma were evaluated. Results of the two methods were then compared and interpreted by a radiologist, recorded in questionnaires, and analyzed. Logistic regression test and Kappa coefficient of agreement were used for statistical analyses. Results: Sixty two ears with COM were found in physical examination. A significant difference was observed between the findings of the two methods in ossicle erosion (11.3% in conventional CT vs. 37.1% in spiral CT, P = 0.0001), decrease of mastoid air cells (82.3% in conventional CT vs. 93.5% in spiral CT, P = 0.001), and tympanic cavity opacity (12.9% in conventional CT vs. 40.3% in spiral CT, P=0.0001). No significant difference was observed between the findings of the two methods in ossicle destruction (6.5% conventional CT vs. 56.4% in spiral CT, P = 0.125), and presence of cholesteatoma (3.2% in conventional CT vs. 42% in spiral CT, P = 0.172). In this study, spiral CT scan demonstrated ossicle dislocation in 9.6%, decrease of mastoid air cells in 4.8%, and decrease of volume in the tympanic cavity in 1.6%; whereas, none of these findings were reported in the patients' conventional CT scans. Conclusion: Spiral-CT scan is superior to conventional CT in the diagnosis of lesions in COM before operation. It can be used for detailed evaluation of ossicular chain in such patients. |
| Databáze: | OpenAIRE |
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