Wales Jeremy, Muyshondt Pieter G G, Silvola Juha, Livens Pieter, Gladiné Kilian, Dirckx Joris J J, von Unge Magnus
Department of Otorhinolaryngology Karolinska University Hospital and CLINTEC, Karolinska Institute Stockholm Sweden.
Laboratory of Biomedical Physics, University of Antwerp Antwerp Belgium.
Laryngoscope Investig Otolaryngol. 2025 May 14;10(3):e70158. doi: 10.1002/lio2.70158. eCollection 2025 Jun.
Conductive hearing loss requires the surgeon to evaluate ossicular movement to plan and execute surgery. An objective assessment of the ossicular chain with laser vibrometry would likely improve the results of ossiculoplasty.
Minimally invasive intraoperative laser vibrometry (MIVIB), a fast and accurate technique, using a continuous time-domain signal that stimulates the Med-El FMT transducer attached to the malleus in a temporal bone model, was used to evaluate artificial fixation of the ossicular chain.
Through this analysis method, differing incus velocity responses were seen between simulated single and multiple ossicle fixations in frequencies above 1000 Hz (</> -25 dB respectively). The incus-umbo velocity ratio was shown to detect stapes fixation in both multiple and single ossicle fixations (> -20 and > -10 dB, respectively) highlighting the importance of determining between single and multiple ossicle fixations first.
MIVIB provides an objective assessment of the ossicular chain to identify specific fixations and therefore assist the surgeon in improving surgical outcomes.
传导性听力损失需要外科医生评估听骨链的活动，以规划和实施手术。使用激光振动测量法对听骨链进行客观评估可能会改善鼓室成形术的效果。
微创术中激光振动测量法（MIVIB）是一种快速且准确的技术，它利用连续时域信号刺激颞骨模型中附着于锤骨的美敦力FMT换能器，用于评估听骨链的人工固定情况。
通过这种分析方法，在频率高于1000Hz时，模拟单听骨固定和多听骨固定之间观察到砧骨速度响应不同（分别为</> -25dB）。砧骨 - 鼓膜脐速度比显示在多听骨固定和单听骨固定中均能检测到镫骨固定（分别> -20dB和> -10dB），突出了首先确定单听骨固定和多听骨固定之间差异的重要性。
MIVIB可对听骨链进行客观评估，以识别特定的固定情况，从而协助外科医生改善手术效果。
