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相关概念视频

Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

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Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
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相关实验视频

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fMRI Mapping of Brain Activity Associated with the Vocal Production of Consonant and Dissonant Intervals
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使用音频信息动态MRI图谱量化语音声音产生中的喉运动变化.

Fangxu Xing1, Riwei Jin2, Imani Gilbert3

  • 1Dept. Radiology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, US 02114.

Proceedings of SPIE--the International Society for Optical Engineering
|August 25, 2023
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概括

这项研究引入了一种新的方法,可以使用动态磁共振成像 (MRI) 来可视化演讲期间微妙的耳鼻 (VP) 运动变化. 该技术可以识别不同个体之间独特的VP变形模式,有助于理解语音产生差异.

关键词:
运动 运动运动.在PCA中,PCA是PCA.亚特兰大 亚特兰大 亚特兰大 亚特兰大音频波形是一种音频波形.动态核磁共振成像 (MRI)演讲 演讲 演讲 演讲维洛法林克斯 (Velopharynx) 是一个

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科学领域:

  • 医疗成像医学成像
  • 语音科学 语言科学
  • 生物机械分析 生物机械分析

背景情况:

  • 动态磁共振成像 (MRI) 能够实时捕捉人类耳鼻 (VP) 发言过程中的变形.
  • 语音运动图谱允许对空间和时间一致的VP运动数据进行组分析.
  • 在不同受试者之间识别VP变形模式的微妙变化是一个重大的分析挑战.

研究的目的:

  • 开发和验证用于计算和可视化微妙的VP变形变化模式的方法.
  • 从高维动态MRI数据中提取独特的,发音特定的VP运动模式.
  • 为增强语音分析,将音频特征与空间VP运动变化相关联.

主要方法:

  • 利用大图空间内的动态运动场上的主要成分分析 (PCA) 来识别变形模式.
  • 集成实时音频录音,以确定关键的演讲时间框架,最大的变化.
  • 将特定主体的运动场扭曲成一个共同的地图空间,用于定量分析变化的变化.

主要成果:

  • 在12名健康受试者中成功计算和可视化微妙的VP运动差异.
  • 确定了代表VP变形模式关键变化的主要组件.
  • 证明了揭示特定发音的VP运动特征的能力.

结论:

  • 开发的方法有效地可视化了微妙的VP运动变化,从而能够对与语音相关的变形进行定量分析.
  • 这种方法有助于区分单独的差异在言语过程中velopharyngeal动力学.
  • 这些发现有助于更深入地了解语音生产的生物力学.