JOURNAL OF SHANDONG UNIVERSITY (HEALTH SCIENCES)

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Evaluation destruction of ossicular chain in chronic otitismedia with MPR and MIP in HRCT

DING Yuan-ping,SUN Xiao-wei,LI Du-min,DENG Ji-bo   

  1. 1. Department of Otorhinolaryngology, Qilu Hospital of Shandong University, Jinan 250012, Shandong， China；2.Department of CT,Qilu Hospital, Shandong University, Jinan 250012， Shandong, China；
  • Received:2006-02-20 Revised:1900-01-01 Published:2006-06-25
  • Contact: DING Yuan-ping

Abstract: To observe the ossicular chain structure with multiplanar reconstruction (MPR) and maximum intensity projection (MIP) and evaluate role of MPR and MIP in the destruction of ossicular chain in chronic otitis media(COM). Methods：Highresolution CT scaning was performed in 20 patients (40 ears)with sudden deafness （control group ）and 62 patients (71 ears)with chronic otitis media(COM group) and the original data processed with MPR and MIP. The ossicular chain structure in the images generated by these techniques wasResults： In the control group, the ossicular chain structure was displayed in both MPR and MIP imaging,while MPR was superior to MIP on the structure of entire stape,and MIP was superior to MPR on the three dimentional structure of ossicular chain. In COM group,the destruction of ossicular chain was displayed by MPR and MIP respectively in 43 and 41 among the patients with cholesteatoma (44 ears), in 6 and 5 among the patients with granuloma (17 ears), and none among the patients with simple COM(10 ears);and it was displayed respectively in 41,6and 0 ear. Conclusion: Using MPR combined with MIP is helpful in the diagnosis and operation on the destruction of ossicular chain.

Key words: Tomography, Xray computed, high resolution, Otitis media, Cholesteatoma

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