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State-of-the-art MRI Protocol for Comprehensive Assessment of Vocal Tract Structure and Function

机译:最先进的MRI协议,用于综合评估声带结构和功能

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Magnetic Resonance Imaging (MRI) provides a safe and flexible means to study the vocal tract, and is increasingly used in speech production research. This work details a state-of-the-art MRI protocol for comprehensive assessment of vocal tract structure and function, and presents results from representative speakers. The system incorporates (a) custom upper airway coils that are maximally sensitive to vocal tract tissues, (b) graphical user interface for 2D real-time MRI that provides on-the-fly reconstruction for interactive localization, and correction of imaging artifacts, (c) off-line constrained reconstruction for generating high spatio-temporal resolution dynamic images at (83 frames per sec, 2.4 mm~2), (d) 3D static imaging of sounds sustained for 7 sec with full vocal tract coverage and isotropic resolution (resolution: 1.25 mm~3), (e) T2-weighted high-resolution, high-contrast depiction of soft-tissue boundaries of the full vocal tract (axial, coronal, sagittal sweeps with resolution: 0.58 × 0.58 × 3 mm~3), and (f) simultaneous audio recording with off-line noise cancellation and temporal alignment of audio with 2D real-time MRI. A stimuli set was designed to capture efficiently salient, static and dynamic, articulatory and morphological aspects of speech production in 90-minute data acquisition sessions.
机译:磁共振成像(MRI)提供了一种安全和灵活的方法来研究声带,越来越多地用于语音生产研究。这项工作详细说明了一种最先进的MRI协议,用于综合评估声带结构和功能,并提出代表性扬声器的结果。该系统包含(a)定制上呼吸道线圈,对声带组织最大敏感,(b)用于2d实时MRI的图形用户界面,提供用于交互式本地化的现场重建,并校正成像伪影( c)离线约束重建,用于在(每秒83帧,2.4mm〜2),(d)持续7秒的3D静态成像,具有全声道覆盖和各向同性分辨率(分辨率:1.25mm〜3),(e)T2加权高分辨率,高对比度描绘全声道的软组织边界(轴向,冠状,矢状扫扫描,分辨率:0.58×0.58×3mm〜3 (f)(f)同时使用离线噪声消除和使用2D实时MRI的音频对准音频记录。旨在在90分钟的数据采集会话中捕捉有效的突出,静态和动态,明显,明显,术语和形态学的语音生产的形态学方面。

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