Pauriol-Lacaze S, Pouget J F, Michel F, Martin C, Veyret C
Service de Radiologie, CHU Hôpital Nord, avenue Albert Raimond, 42055 Saint-Etienne 2.
J Radiol. 2003 Dec;84(12 Pt 1):1961-8.
Our study consists of a comparison of traditional computed tomography (CT) data sets with 2 views of virtual endoscopy in the preoperative evaluation of various diseases of the middle ear.
We studied 59 patients, all sent for conductive hearing loss with normal eardrum who underwent a complete CT examination: axial helical acquisition and coronal incremental acquisition: virtual endoscopy with selection of two reproducible views: an external one of the auditory canal and a lower one of the hypotympanum. Reading was performed by 2 independent radiologists. All patients were subsequently operated by the same surgeon. Results were compared with surgical reports.
Virtual endoscopy is valuable for the evaluation of ossicular and prosthesis dislocations, morphological anomalies of the malleus, incus, and stapes superstructure. Nevertheless, standard axial and coronal CT images remain necessary as confirmed by the poor results of virtual endoscopy in cases of attic obstruction, cholesteatomas and otospongiosis.
Virtual endoscopy is a valuable technique of the evaluation of some ossicular chain pathologies but it cannot be used alone.
我们的研究包括在中耳各种疾病的术前评估中，将传统计算机断层扫描（CT）数据集与虚拟内窥镜的两个视图进行比较。
我们研究了59例患者，所有患者均因鼓膜正常的传导性听力损失而接受了完整的CT检查：轴向螺旋采集和冠状增量采集；虚拟内窥镜检查，选择两个可重复的视图：外耳道的外部视图和下鼓室的下部视图。由2名独立的放射科医生进行阅片。所有患者随后均由同一位外科医生进行手术。将结果与手术报告进行比较。
虚拟内窥镜对于评估听小骨和假体脱位、锤骨、砧骨和镫骨上部结构的形态异常很有价值。然而，标准的轴向和冠状CT图像仍然是必要的，因为在鼓室上隐窝阻塞、胆脂瘤和耳海绵状变性的病例中，虚拟内窥镜的结果不佳证实了这一点。
虚拟内窥镜是评估一些听骨链病变的有价值技术，但不能单独使用。
