[利用激光多普勒测速仪（LDV）辅助测量圆窗活动度以评估听骨链功能]
[Round window's movability measurements with helping of LDV in evaluation of ossicular chain functioning].
作者信息
Sokołowski Jacek, Niemczyk Kazimierz, Bartoszewicz Robert, Morawski Krzysztof, Bruzgielewicz Antoni, Rygalska Barbara
机构信息
Katedra i Klinika Otolaryngologii Warszawskiego Uniwersytetu Medycznego.
出版信息
Otolaryngol Pol. 2010 Jun;64(7):77-80. doi: 10.1016/S0030-6657(10)70015-9.
UNLABELLED
Round window's movability measurements with helping of LDV in evaluation of ossicular chain functioning.
AIM OF STUDY
Quantitive evaluation of round window movability in normal conditions and after malleus stapes assembly reconstruction were aims of the study.
METHODS AND MATERIALS
In the experiment there were taken 10 non-frozen temporal bones harvested within 48 hours. Temporal bones specimens were prepared like in closed technique with antromastoidectomy and large posterior tympanotomy. Hearing system before and after MSA reconstruction were evaluated by measurement of round window movement. Measurements were performed at four frequencies: 1000 Hz, 2000 Hz, 4000 Hz, 8000 Hz.
RESULTS
In the normal ossicular chain the biggest movability were stated at frequency of 1 kHz. After reconstruction at all frequencies measurements were significantly worse. In reconstructed ears the highest movabilities were stated at frequencies 2000 Hz and 4000 Hz.
CONCLUSIONS
Round window movability could be measured by Laser Doppler Vibrometry in posterior tympanotomy approach. Before reconstruction the biggest movability were evaluated at 1000 Hz and after MSA at 2000 Hz
未标注
在激光多普勒测速仪（LDV）辅助下测量圆窗活动度以评估听骨链功能。
研究目的
本研究旨在对正常情况下及锤骨-镫骨连接重建后的圆窗活动度进行定量评估。
方法与材料
实验选取了10块在48小时内采集的未冷冻颞骨。颞骨标本采用封闭技术并进行鼓窦乳突切除术和大型后鼓室切开术制备。通过测量圆窗运动来评估锤骨-镫骨连接（MSA）重建前后的听觉系统。测量在四个频率下进行：1000赫兹、2000赫兹、4000赫兹、8000赫兹。
结果
在正常听骨链中，最大活动度出现在1千赫兹频率处。重建后，所有频率下的测量结果均明显变差。在重建耳中，最高活动度出现在2000赫兹和4000赫兹频率处。
结论
可通过后鼓室切开术入路的激光多普勒振动测量法测量圆窗活动度。重建前，最大活动度在1000赫兹处评估，重建后在2000赫兹处评估 。
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