MSCT 后处理技术诊断耳硬化症

Objective To observe the value of multi-slice spiral CT（MSCT）post-processing technologies for diagnosing otosclerosis. Methods Clinical data and original axial plain MSCT of 47 patients with otosclerosis（92 ears）and 65 patients with non-otosclerosis hearing impairment（79 ears）were retrospectively enrolled. MSCT post-processing images，including multi-planar reformation（MPR）of stapes and cochleas and curved planar reformation（CPR）of ossicular chains were obtained. The diagnostic value of original MSCT images alone and raw data of MSCT combing with post-processing images for diagnosing otosclerosis were compared. Results Otosclerosis was correctly diagnosed in 66 ears according to original MSCT images alone， but in 89 ears combined with MSCT post-processing images. The sensitivity of original MSCT images alone and combined with MSCT post-processing images was 71. 74% and 96. 74%，respectively，and the diagnostic accuracy was 81. 29% and 96. 49%，respectively，those of the latter were both higher than of the former（both P＜0. 05），which had specificities being not significantly different（92. 41% vs. 96. 20%，P＞0. 05）. Conclusion Combining with post-processing technologies could increase the sensitivity and accuracy of MSCT for diagnosing otosclerosis.