Abstract Safe colorectal cancer (CRC) resection depends on accurate preoperative understanding of mesenteric vascular anatomy, which is highly variable and poorly represented in existing datasets. We curated dual-phase contrast-enhanced abdominal CT (CECT) scans from 60 adults imaged over one year on a Siemens SOMATOM Force scanner (slice thickness 0.75 mm). Arterial phases (25-30 s) and venous phases (55–60 s) were manually segmented in 3D Slicer by an experienced surgeon and verified by a senior colorectal surgeon; without inter-phase registration to preserve native characteristics. The resource includes 60 CECT studies (50 dual-phase, 10 venous only), each containing ~700–900 axial slices. Deliverables comprise CECT volumes, per-structure 3D label masks for major mesenteric arteries and veins. Example figures of overlays and 3D masks are provided. Intended uses include vessel segmentation, vascular-aware surgical planning, and registration research. Limitations include single-institution acquisition, difficulty delineating small vessels <4 mm, absence of inter-phase registration, and altered vascular anatomy from surgeries.
Hrubovcak et al. (2026) studied this question.