Speech MRI dataset of repeated counting from 1-5

Experiments were performed on a 3T GE Premier scanner using a custom 16 channel airway coil a healthy subject. The subject were scanned in accordance to our institute's review board protocol, and informed consent were obtained from the subject prior to the study. Subjects were scanned while producing repeated counting of numbers (1 to 5) at the subject's natural pace. A gradient echo based variable density spiral sampling with golden angle view ordering was used to sequentially (one after the other) acquire multiple 2D slices in the mid sagittal plane. Relevant sequence parameters were: Field of view (FOV in <em>cm</em>²) = 20 × 20, flip angle = 5 <em>degrees</em>, TR = 6 <em>ms</em>, spatial resolution (<em>mm</em>²) = 2.4 × 2.4, slice thickness = 6 <em>mm</em>, number of slices = 10, spiral interleaves required for Nyquist sampling = 27, readout points = 335, readout duration = 1.3 <em>ms</em>, acquisition time per slice = 16.2 <em>s</em>; total scan time = 162 <em>s</em>. The <strong>.mat</strong> files contails the followings: <br> <strong>dcf</strong>: density compensation factor (readout points × spiral arms) <strong>k</strong>: kspace trajectory (readout points × spiral arms) <strong>kdata</strong>: MRI data (readout points × coils × spiral arms × slices)

本实验使用搭载定制化16通道气道线圈的3T GE Premier磁共振扫描仪，对1名健康受试者开展扫描。所有扫描操作均符合本机构伦理审查委员会的相关规程，且实验开展前已获取受试者的书面知情同意。实验过程中，受试者以自身自然节奏重复计数（1至5）。本研究采用基于梯度回波的变密度螺旋采样方案，并采用黄金角视图排序方式，依次采集矢状面中部的多幅二维切片。相关序列参数如下：视野（Field of View, FOV，单位cm²）= 20 × 20，翻转角= 5°，重复时间（TR）= 6 ms，空间分辨率（单位mm²）= 2.4 × 2.4，层厚= 6 mm，切片数量=10，奈奎斯特采样所需螺旋交错数（spiral interleaves）=27，读出点数=335，读出时长=1.3 ms，单切片采集时间=16.2 s；总扫描时长=162 s。该<strong>.mat</strong>格式文件包含以下数据字段：<br><strong>dcf</strong>：密度补偿因子（维度：读出点数 × 螺旋臂数）；<strong>k</strong>：k空间轨迹（维度：读出点数 × 螺旋臂数）；<strong>kdata</strong>：磁共振成像数据（维度：读出点数 × 线圈数 × 螺旋臂数 × 切片数）