3D image of the middle ear ossicles: three protocols of post-processing based on multislice computed tomography
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Li-chun Zhang · Yan Sha · Zheng-min Wang · Dao-tian Luo · Wen-hu Huang · Pei-dong Dai · Tian-yu Zhang
- چاپ و سال / کشور: 2011
Description
The aim of this study was to examine and assess the comparative values of HRCT-based multiplanar reformation (MPR), volume rendering (VR) and virtual endoscope built on three-dimensional shaded-surface display (SSD-based CTVE) for evaluations on the ossicular chain. 32 human ears of 18 patients accompanied by normal pure tone audiograms, type-A tympanogram and normal HRCT characteristics were reviewed, whose ossicular chains were reconstructed with the three aforementioned protocols and assessed via the three-point scoring system. The HRCT-based protocols could demonstrate a 3D image of the ossicular chain, except that of the footplate on the SSD-based CTVE. On the qualitative assessment, the eYcacy of the MPR and VR, which were both superior to the SSD-based CTVE (P < 0.05), presented no statistical signiWcance among the major and/or hyperdense structures (P > 0.05). As regards the lateral process of the malleus, VR was found to be signiWcantly superior to the MPR and SSD-based CTVE (P < 0.05), both of which, however, showed no signiWcant comparative diVerences (P > 0.05). Moreover, the three protocols in terms of eYcacy were found to be comparatively diVerent for representing the anterior crus and footplates of the stapes, respectively (P < 0.05). On their MPR images all the images of the lenticular process were not ideal; 20 of 32 cases were detected, but not deWned. VR could be the more valuable protocols for the 3D reconstruction of the ossicular chain and should be further applied in the future work, especially for the education.
Eur Arch Otorhinolaryngol (2011) 268:677–683, Received: 11 August 2010 / Accepted: 16 November 2010 / Published online: 4 December 2010 © Springer-Verlag 2010
