Extending real-time MRI of the oral cavity using simultaneous multislice and compressed sensing.

IF 3 3区医学 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Magnetic Resonance in Medicine Pub Date : 2025-09-15 DOI:10.1002/mrm.70085

Isaac Watson, Mike Angus, Elisa Zamboni, David Mitchell, Angelika Sebald, Aneurin J Kennerley

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引用次数: 0

Abstract

Purpose: To demonstrate a real-time MRI (rtMRI) sequence that can image multiple slices simultaneously and apply them to image the dynamics of the oral cavity. Specifically, we demonstrate the imaging of tongue movement, speech, and swallowing.

Methods: We developed a radial rtMRI sequence with multiband excitation. Two sampling schemes were explored: a golden-angle trajectory and a golden-angle trajectory adapted for simultaneous multislice acceleration. Additionally, we developed a compressed sensing reconstruction pipeline. Phantom and in vivo rtMRI data were acquired on a 3 T system using a standard head/neck coil.

Results: We show that the proposed technique can acquire rtMRI videos at a range of temporal resolutions (up to 25 ms). Example applications of tongue movement, speech, and swallowing are shown. Additionally, we show that the sequence is robust to changes in slice distance and coil compression level.

Conclusion: Combining rtMRI with multiband excitation and compressed sensing reconstruction enables imaging of the oral cavity at high (up to 25 ms) temporal resolution.

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使用同时多层和压缩感知扩展口腔实时MRI。

目的：演示一种实时MRI （rtMRI）序列，该序列可以同时对多个切片进行成像，并将其应用于口腔动态成像。具体来说，我们展示了舌头运动、语言和吞咽的成像。方法：建立了多波段激励的径向rtMRI序列。研究了两种采样方案：黄金角轨迹和适合同时多层加速的黄金角轨迹。此外，我们还开发了压缩传感重建管道。使用标准头颈线圈在3t系统上获取幻影和活体rtMRI数据。结果：我们表明，所提出的技术可以在时间分辨率范围内（高达25 ms）获取rtMRI视频。给出了舌头运动、说话和吞咽的例子应用。此外，我们表明该序列对切片距离和线圈压缩水平的变化具有鲁棒性。结论：将rtMRI与多波段激励和压缩感知重建相结合，可以实现高（高达25 ms）时间分辨率的口腔成像。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Magnetic Resonance in Medicine 医学-核医学

CiteScore

6.70

自引率

24.20%

发文量

376

审稿时长

2-4 weeks

期刊介绍： Magnetic Resonance in Medicine (Magn Reson Med) is an international journal devoted to the publication of original investigations concerned with all aspects of the development and use of nuclear magnetic resonance and electron paramagnetic resonance techniques for medical applications. Reports of original investigations in the areas of mathematics, computing, engineering, physics, biophysics, chemistry, biochemistry, and physiology directly relevant to magnetic resonance will be accepted, as well as methodology-oriented clinical studies.