Ultrasonic Evaluation of Seminiferous Tubules by Frequency Map
Ultrasonic Evaluation of Seminiferous Tubules by Frequency Map
复制标题
通过频率图对曲细精管进行超声评估
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Y. Hata
中科院分区：
文献类型：
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作者：
Y. Takashima;T. Ishikawa;Syoji Kobashi;Kei Kuramoto;Y. Hata
本文介绍了一种用超声探头检测精管的系统。该系统评估无精子症患者的精管直径。我们使用了一个5.0MHz的超声单探头。在实验中，我们用大的和小的尼龙线作为健康和不健康的精管。利用超声探头获取波形，利用短时傅里叶变换计算频谱。该系统通过频率图可视化小线和大线的位置。频率图显示距离和频率值。在结果中，我们提出的方法检测了大线和小线。此外，该系统还可以清楚地评估探针与这些线之间的距离。因此，所提出的方法成功地评估了大线条的位置。
This paper describes a seminiferous tubules evaluation system using an ultrasonic probe. This system evaluates diameters of seminiferous tubules for azoospermia patients. We employ a 5.0MHz ultrasonic single probe. In the experiment, we employ large and small nylon lines as the healthy and unhealthy seminiferous tubules. We acquired the waveforms by the ultrasonic probe and calculated frequency spectrum by short-time Fourier transform. The system visualizes the position of small and large line by a frequency map. The frequency map shows distance and frequency value. In the results, our proposed method detected the large and small lines. Additionally, the system evaluated distance between probe and these lines clearly. The proposed method thus successfully evaluated the position of the large lines.