Enhancing linguistic research through 2-mm isotropic 3D dynamic speech MRI optimized by sparse temporal sampling and low-rank reconstruction.
Enhancing linguistic research through 2-mm isotropic 3D dynamic speech MRI optimized by sparse temporal sampling and low-rank reconstruction.
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通过稀疏时间采样和低秩重建优化的 2 毫米各向同性 3D 动态语音 MRI 加强语言研究。
DOI：
10.1002/mrm.29486
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发表时间：
2023-02
影响因子：
3.3
通讯作者：
Sutton, Bradley P.
中科院分区：
文献类型：
--
作者：
Jin, Riwei;Shosted, Ryan K.;Xing, Fangxu;Gilbert, Imani R.;Perry, Jamie L.;Woo, Jonghye;Liang, Zhi-Pei;Sutton, Bradley P.
通过具有高时空分辨率和大声道覆盖范围的近各向同性3D动态MRI，能够更全面地查看讲话期间的发音。使用基于部分可分性模型的低秩重建加上空间和时间模型的稀疏采集，我们能够实现具有高帧率的近各向同性分辨率3D成像。通过引入稀疏时间采样，缩短了语音采集的总采集时间，该稀疏时间采样将一个时间导航器与四个随机相位和切片编码成像样本交错。通过基于感兴趣区域压缩线圈以进行具有边缘保留空间惩罚的低秩约束重建，改善了存储器和计算时间。所提出的方法已通过实验进行了评估，对几个语音样本，包括一个标准的阅读通过。实现了近各向同性1.875 × 1.875 × 2 mm3的空间分辨率、64 mm的平面覆盖范围和35.6 fps的时间分辨率。特定的语音样本的调查和分析支持新的见解不对称的舌头运动，软腭提高，和协同发音事件与快速发音运动的充分可视化。语音过程中具有高时空分辨率和轴向覆盖的声道结构的三维动态图像能够增强语言学研究，实现其他模式无法实现的软组织运动可视化。 点击此处进行作者-读者讨论
To enable a more comprehensive view of articulations during speech through near‐isotropic 3D dynamic MRI with high spatiotemporal resolution and large vocal‐tract coverage. Using partial separability model‐based low‐rank reconstruction coupled with a sparse acquisition of both spatial and temporal models, we are able to achieve near‐isotropic resolution 3D imaging with a high frame rate. The total acquisition time of the speech acquisition is shortened by introducing a sparse temporal sampling that interleaves one temporal navigator with four randomized phase and slice‐encoded imaging samples. Memory and computation time are improved through compressing coils based on the region of interest for low‐rank constrained reconstruction with an edge‐preserving spatial penalty. The proposed method has been evaluated through experiments on several speech samples, including a standard reading passage. A near‐isotropic 1.875 × 1.875 × 2 mm3 spatial resolution, 64‐mm through‐plane coverage, and a 35.6‐fps temporal resolution are achieved. Investigations and analysis on specific speech samples support novel insights into nonsymmetric tongue movement, velum raising, and coarticulation events with adequate visualization of rapid articulatory movements. Three‐dimensional dynamic images of the vocal tract structures during speech with high spatiotemporal resolution and axial coverage is capable of enhancing linguistic research, enabling visualization of soft tissue motions that are not possible with other modalities. Click here for author‐reader discussions
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DOI：
10.1109/taslp.2018.2800280
发表时间：
2018-05
期刊：
IEEE/ACM transactions on audio, speech, and language processing
影响因子：
--
作者：
Vaz C;Ramanarayanan V;Narayanan S
通讯作者：
Narayanan S
影响因子：
4.4
作者：
Kim, Yoon-Chul;Proctor, Michael I.;Narayanan, Shrikanth S.;Nayak, Krishna S.
通讯作者：
Nayak, Krishna S.
影响因子：
3.3
作者：
Buehrer, Martin;Pruessmann, Klaas P.;Kozerke, Sebastian
通讯作者：
Kozerke, Sebastian
影响因子：
1.9
作者：
STONE, M;HAMLET, S
通讯作者：
HAMLET, S
影响因子：
10.6
作者：
Wen, You-Wei;Chan, Raymond H.
通讯作者：
Chan, Raymond H.