chehablab/SALD_t1w

该数据集源自西南大学成人生命周期数据集（SALD），这是一个大型横断面神经影像数据集，旨在表征成年生命周期的大脑结构和功能。研究招募了中国重庆西南大学19至80岁的社区成年人。在每次会话中，参与者提供了T1加权结构MRI图像以及行为和认知评估。这里，我们提供了一个基于2D切片的T1加权MRI体积版本，提取自认知正常的全年龄段受试者。数据集结构：每个条目对应于3D MRI体积中的单个2D切片，包括volume_id（受试者/体积的唯一标识符）、slice_id（体积内切片的索引）、age（扫描时参与者的年龄）、sex（参与者的生物性别，M或F）和image（2D MRI切片）。预处理：仅使用T1加权体积，将体积转换为2D轴向切片，切片经过归一化并调整大小至256×256。注意事项：每个体积的后期切片中存在噪声。This dataset is derived from the Southwest University Adult Lifespan Dataset (SALD), a large-scale cross-sectional neuroimaging dataset designed to characterize brain structure and function across the adult lifespan. The study recruited community-dwelling adults between ages 19 and 80 from Southwest University in Chongqing, China. At each session, participants contributed T1-weighted structural MRI images alongside behavioral and cognitive assessments. Here, we provide a 2D slice-based version of T1-weighted (T1w) MRI volumes, extracted from cognitively normal subjects across the full age range. Dataset Structure: Each entry corresponds to a single 2D slice from a 3D MRI volume, including volume_id (unique identifier for the subject/volume), slice_id (index of the slice within the volume), age (age of the participant at time of scan), sex (biological sex of the participant, M or F), and image (2D MRI slice). Preprocessing: Only T1-weighted volumes were used, volumes were converted into 2D axial slices, slices were normalized and resized to 256×256. Caveat: Late slices in each volume have noise in them.