CCAP: A Dataset with Capillary-Level Annotation and Vessel Caliber Differentiation

CCAP (Coronary Capillary and Caliber-Aware Angiography) is a re-annotation dataset for coronary X-ray angiography, providing high-quality vessel segmentation masks with an emphasis on capillary-level detail and vessel-caliber awareness. This release contains only the derived annotations and accompanying metadata, enabling research on coronary vessel segmentation, microvasculature analysis, and caliber-aware modeling in challenging angiographic conditions (low contrast, overlap, and discontinuities). To comply with the original dataset’s redistribution policy, this Zenodo record does not include any original angiography images. Instead, we provide: (1) the re-annotated segmentation masks, and (2) a mapping file (CSV) that links each mask to its corresponding image identifier/path in the original dataset, so that users can reproduce the image–mask pairing after obtaining the original images from their official source.CCAP（冠状动脉微血管与管径感知血管造影，Coronary Capillary and Caliber-Aware Angiography）是一款针对冠状动脉X射线血管造影的重标注数据集，其提供高质量的血管分割掩码，重点关注微血管层级细节与血管管径感知能力。本次发布仅包含衍生标注及配套元数据，可支持冠状动脉血管分割、微脉管系统分析，以及在低对比度、血管重叠、影像不连续等具有挑战性的血管造影场景下的管径感知建模相关研究。 为遵守原始数据集的再分发政策，本Zenodo记录未包含任何原始血管造影影像。我们转而提供以下两类资源：(1) 重标注的分割掩码；(2) 一份映射文件（CSV格式），用于将每个掩码与原始数据集中对应的影像标识符/路径进行关联，以便用户从官方来源获取原始影像后，能够复现影像与掩码的配对关系。