IVIM dataset

IVIM.nii.gz is an acquired IVIM dataset with 21 b-values acquired in 3 directions, registered to each other and the directions were averaged into one. So this dataset is 4D where the 4th dimension is the b-values.<br><br>IVIM.bvecs are the b-vectors, which are just the 3 directions averaged.<br><br>IVIM.bvals are the 21 b-values of the acquisition.<br><br>fit.nii.gz is 4D with the 4th dimension as each of the fitted values S0, f, D, D*.<br>

IVIM.nii.gz 为采集获得的体素内不相干运动（Intravoxel Incoherent Motion, IVIM）数据集，共包含21个b值，沿3个方向采集得到，所有数据已完成相互配准，且各方向数据已平均合并。该数据集为四维结构，其第四维度对应b值维度。

IVIM.bvecs 为b向量文件，仅存储了平均合并后的3个采集方向信息。

IVIM.bvals 文件包含本次采集的全部21个b值。

fit.nii.gz 同样为四维数据集，其第四维度依次对应拟合得到的S0、f、D、D*参数。

搜集汇总

背景与挑战

背景概述

该数据集是一个IVIM成像数据集，包含原始采集数据（4D格式，21个b值）和拟合参数数据（S0、f、D、D*），适用于神经科学研究。