Mammo-MX dataset: An X-ray mammography dataset for computer-aided diagnosis of breast cancer
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The Mammo-MX database represents one of the first comprehensive dataset of Mexican patients, containing mammography studies conducted during screening campaigns between 2023 and 2024 at the breast clinic in Jalisco. The database includes 3,368 patients with a total of 13,659 mammographic examinations. All data are labeled according to radiologist categorization using the BI-RADS scale, ranging from category 0 (inconclusive studies requiring additional imaging or supplementary examinations) to category 6 (patients with confirmed malignant findings), as well as breast density classification. This database serves as a valuable resource for developing and testing breast cancer detection systems that can be implemented in hospitals as diagnostic support tools for radiologists. The project's content is organized within the "Mammo-MX_dataset" folder, which contains a total of 13,659 mammograms from 3,368 patients. Inside this folder, there are six ZIP files labeled B0, B1, B3, B4, B5, and B6, each corresponding to a specific BI-RADS classification assigned by expert radiologists. Due to the large volume of studies categorized as BI-RADS 2, the B2 folder is subdivided into seven separate files to facilitate data management and access. Each mammogram file is named using a structured format that begins with six-digit patient identifier, followed by a letter indicating breast laterality-"R" for the right breast and "L" for the left. This is followed by the projection view, either craniocaudal (CC) or mediolateral-oblique (MLO). The final two identifiers represent the BI-RADS category (B0-B6) and breast density level (D1-D4), both determined by experienced radiologists. All mammograms are stored in DICOM format. In addition to the pixel matrix representation of the image, each file includes metadata such as: Age: Patient’s age Laterality: Right (R) or left (L) breast Projection view: CC or MLO BI-RADS: BI-RADS classification of the breast Breast density: Density classification according to BI-RADS criteria Technical acquisition parameters are also embedded in the DICOM files, including: Source-to-patient distance (mm): Distance from the X-ray source to the patient Exposure (mAs): Amount of radiation measured in milliampere-seconds Compression force (N): Force applied during mammography, measured in Newtons Relative X-ray exposure: Normalized measure of radiation dose during imaging Entrance dose (mGy): Radiation dose at the breast surface, measured in milligray Exposure time (ms): Duration of exposure during image acquisition, measured in milliseconds All this information, along with additional technical parameters extracted from the DICOM headers, is compiled and organized in the file Metadata.csv. Further acquisition-related parameters such as X-ray tube voltage (kVp), anode target material, pixel spacing, and other acquisition settings can also be retrieved from the DICOM files, offering deeper insight into the imaging protocol and system configuration. There is a related data paper in Press "An X-ray Mammography Dataset for Computer-Aided Diagnosis of Breast Cancer". There you can find a comprehensive description of the dataset. Blanca Olivia Murillo-Ortiz et al 2025 Mach. Learn.: Sci. Technol. in press https://doi.org/10.1088/2632-2153/ae275c
Mammo-MX数据库（Mammo-MX database）是首批针对墨西哥患者的综合性乳腺影像数据集之一，收录了2023年至2024年间于哈利斯科州（Jalisco）乳腺诊所开展的筛查项目中的乳腺钼靶检查数据。该数据集涵盖3368名患者，总计13659例乳腺钼靶检查。所有数据均由放射科医师按照乳腺影像报告和数据系统（BI-RADS）进行标注，分级范围从0类（结果不确定，需补充影像学检查或辅助检查）至6类（已确认恶性病变的患者），同时包含乳腺密度分类信息。本数据集可作为开发与测试乳腺癌检测系统的宝贵资源，此类系统可部署于医院，作为放射科医师的诊断辅助工具。 本项目内容存储于“Mammo-MX_dataset”文件夹中，该文件夹包含来自3368名患者的共计13659张乳腺钼靶影像。文件夹内设有六个分别标记为B0、B1、B3、B4、B5、B6的压缩文件，每个文件对应专家放射科医师标注的某一特定BI-RADS分级。由于BI-RADS 2类的检查样本量较大，B2文件夹被细分为七个独立文件，以方便数据管理与调取。 每张乳腺钼靶影像文件均采用结构化命名格式：以6位患者标识符开头，随后是代表乳腺侧别的字母——“R”代表右侧乳腺，“L”代表左侧乳腺；接下来为投照体位，包括颅尾位（craniocaudal, CC）与内外斜位（mediolateral-oblique, MLO）两种；最后两个标识符分别代表BI-RADS分级（B0-B6）与乳腺密度等级（D1-D4），上述信息均由资深放射科医师确定。 所有乳腺钼靶影像均以数字成像与通信医学格式（Digital Imaging and Communications in Medicine, DICOM）存储。除影像的像素矩阵外，每个文件还包含如下元数据： - 年龄：患者年龄 - 乳腺侧别：右侧（R）或左侧（L）乳腺 - 投照体位：CC或MLO - BI-RADS分级：乳腺的BI-RADS分级 - 乳腺密度：基于BI-RADS标准的密度分级 DICOM文件中还嵌入了成像技术参数，具体包括： - 源-患者距离（mm）：X射线源至患者的距离 - 曝光量（mAs）：以毫安秒为单位的辐射剂量 - 压迫力（N）：乳腺钼靶检查中施加的压迫力，单位为牛顿 - 相对X射线曝光量：成像过程中辐射剂量的归一化度量 - 入射剂量（mGy）：乳腺表面的辐射剂量，单位为毫戈瑞 - 曝光时长（ms）：图像采集过程中的曝光时长，单位为毫秒 上述所有信息，以及从DICOM文件头中提取的其他技术参数，均被整理并存储于Metadata.csv文件中。此外，还可从DICOM文件中获取更多与成像相关的参数，例如X射线管电压（kVp）、阳极靶材、像素间距及其他成像设置，从而更深入地了解成像协议与系统配置。 相关数据集论文《用于乳腺癌计算机辅助诊断的X射线乳腺钼靶数据集》（An X-ray Mammography Dataset for Computer-Aided Diagnosis of Breast Cancer）已在刊待发表。读者可在该论文中获取该数据集的详细描述，作者为Blanca Olivia Murillo-Ortiz等人，发表于2025年《Machine Learning: Science and Technology》（Mach. Learn.: Sci. Technol.），即将刊出，DOI链接：https://doi.org/10.1088/2632-2153/ae275c
