LA-Breast DCE-MRI Dataset

Images were selected from retrospective studies corresponding to Latin American patients. Studies were selected according to the acquisition parameters with the aim to preserve diversity but ensure homogeneity among them. Each study was anonymized following the convention “MRI\_N” where N represents the integer number of the patient (between 1 and 200). Each study contains 15 imaging sequences: pre-contrast T1 fat saturated Dynamic (d0), five postcontrast T1 fat saturated dynamics (d1 to d5), T1 with no fat saturation (t1), T2 with no fat saturation (t2), the apparent diffusion coefficient image (ADC) and the diffusion image (Diff). All image sequences were obtained and stored using the standard DICOM 3.0. Besides, all studies were acquired using multiple 1.5T scanners and all contrast agents were gadolinium-based with dosages between 0.014 and 0.016 l/mol as they were obtained retrospectively. Each patient data was filtered according to their available clinical finding, were benign and malignant lesions were prioritized to ensure at least one relevant clinical finding across all images. Thereupon, the data contains balanced train, test and validation sets in terms of benign/malignant lesions, as well as non-dense/dense tissue. Additionally, annotations per image are provided with lesion location (x and y coordinates) BIRADS and tissue density. This data can be used for multiple purposes, including image synthesis, image characterization, lesion classification, tissue segmentation, among others. This dataset can be used for multiple purposes, such image synthesis, image characterization, lesion classification, tissue segmentation, among others.

本数据集的影像数据源自针对拉丁美洲患者的回顾性研究。研究对象按照影像采集参数进行筛选，旨在兼顾数据多样性与组内一致性。每份研究数据均遵循"MRI_N"的匿名化命名规则，其中MRI为磁共振成像（Magnetic Resonance Imaging）的缩写，N代表患者的整数编号，取值范围为1至200。每份研究包含15种成像序列：对比前T1脂肪抑制动态成像（d0）、5种对比后T1脂肪抑制动态成像（d1至d5）、非脂肪抑制T1成像（t1）、非脂肪抑制T2成像（t2）、表观扩散系数图像（apparent diffusion coefficient, ADC）以及弥散图像（Diff）。所有成像序列均按照DICOM 3.0标准进行采集与存储。此外，所有研究均采用多台1.5T磁共振扫描仪完成采集，所用对比剂均为钆基制剂，剂量范围为0.014至0.016 l/mol，符合回顾性数据的采集背景。每位患者的影像数据均根据其可用临床信息进行筛选，优先纳入存在良性或恶性病灶的病例，以确保所有影像数据至少包含一项相关临床发现。据此，本数据集在良恶性病灶、非致密/致密组织两个维度上，均实现了训练集、测试集与验证集的均衡分布。此外，每张图像均附带标注信息，包括病灶位置（x、y坐标）、乳腺影像报告和数据系统（Breast Imaging Reporting and Data System, BIRADS）分级以及组织密度。本数据集可应用于多种研究场景，包括图像合成、图像特征表征、病灶分类、组织分割等。

搜集汇总

背景与挑战

背景概述

LA-Breast DCE-MRI Dataset 是一个专注于乳腺医学影像的数据集，包含200名拉丁美洲患者的动态对比增强磁共振成像（DCE-MRI）数据，每项研究提供15个图像序列，并标注了病变位置、BIRADS评分和组织密度。该数据集在良恶性病变和组织密度上进行了平衡划分，适用于图像合成、病变分类和分割等多种医学影像分析任务。