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  • Title: [CT multiplan reconstruction images of disorder of stapes].
    Author: Gong RZ, Chao BT, Liu K, Fan ZM, Wang HB, Chen QH, Wu LB.
    Journal: Zhonghua Er Bi Yan Hou Ke Za Zhi; 2004 May; 39(5):265-8. PubMed ID: 15338862.
    Abstract:
    OBJECTIVE: To evaluate the clinical application of multi-planar reformation (MPR) for the stapes with multi-slice spinal thin-section CT in the patients with disorder of stapes before prosthetic ossicular reconstruction and their impact on surgical decision. METHODS: Axial CT scanning of temporal bone was undergone in 50 volunteers. Multiplan reformatted images included coronal, sagittal and oblique MPR, were made. All the MPR images were compared with each other in order to show which one could reveal the whole structures of stapes better. The height of stapes was measured with the oblique MPR. CT findings were evaluated in 102 cases with disorder of stapes. Prosthetic ossicular reconstruction was made in 65 cases. RESULTS: The full stapes cannot be shown in axial, coronal and sagittal MPR images, however, it was shown in oblique MPR in all the cases. The highness of stapes was (3.3 +/- 0.4) mm in the abnormal group. There was chronic otitis media in 69 cases (90 ears) and congenital abnormalities of the stapes in 33 cases (47 ears) which included the dispart of incudostapedial joint in 5 cases (7 ears), defect of head and crus of stapes in 9 cases (13 ears), defect of one side of crus in 3 cases (4 ears) and absence of the oval window in 16 cases (23 ears). CONCLUSIONS: Coronal and oblique MPR images from Axial Spiral CT Data are essential for the pre-operative planning of prosthetic ossicular reconstruction. The ship, structure or defect of stapes can be shown in the oblique MPR images. It is important for the patient to choose the type of operation.
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