用於 CT 與 MRI 影像評估大前庭導水管症候群的新方法：症候群定義與臨床相關性

// A New Methodology for Evaluation of Large Vestibular Aqueduct Syndrome in CT and MRI Images: Defining the Syndrome and Finding Clinical Correlation

回顧173名（315耳）顳骨CT與MRI，提出LVA（導水管增大）/LESA準則｜CT導水管長度與蓋板直徑、MRI囊–硬腦膜接觸比與聽力損失相關；CT開口<0.075 mm可篩LVA，MRI優於骨像，導水管短或高信號與小接觸比預示較差聽力預後。

// The study aimed to define CT/CBCT and MRI criteria for large vestibular aqueduct (LVA)/large endolymphatic sac anomaly (LESA) and to propose a classification of hearing-loss course by retrospectively analyzing temporal-bone images from 173 patients (315 ears) and control groups. Logistic regression showed vestibular aqueduct length and operculum diameter on CT/CBCT and the sac_volume_to_dura_contact ratio on MRI significantly correlate with hearing loss, and a decision tree identified a CT opening threshold (<0.075 mm) that differentiates LVA from controls. The authors conclude a measurable CT opening can screen/diagnose LVA on bony images, sac–dura contact on MRI confirms LESA, and MRI is overall superior for diagnosis. Shorter/brighter vestibular aqueducts and smaller sac_volume_to_dura_contact ratios indicate a worse hearing prognosis.

Published 2026年9月22日