This retrospectively acquired data collection includes pre- and post-procedure CT imaging studies of 105\u00a0confirmed HCC patients who underwent TACE between 2002 and 2012 with an available treatment outcome, in the form of time-to-progression and overall survival. Baseline imaging includes multiphasic contrast-enhanced CT with no image artifacts (e.g. surgical clip) and was obtained 1-12 weeks (average 3 weeks) prior to the first TACE session. Semiautomatic segmentation of liver, tumor, and blood vessels created using AMIRA <\/a>was manually clinically curated. These segmentations of each pre-procedural CT study were done for the purpose of algorithm training for prediction and automatic liver tumor segmentation, and are provided here (NIfTI converted to DICOM-SEG format). We would like to acknowledge the individuals and institutions that have provided data for this collection:<\/p> The University of Texas MD Anderson Cancer Center<\/strong>, Departments of Imaging Physics, Body Imaging, Gastrointestinal Oncology, Epidemiology, and Interventional Radiology.<\/p><\/li> Harmonization of the components of this dataset, including into standard DICOM representation, was supported in part by the NCI Imaging Data Commons consortium. NCI Imaging Data Commons consortium is supported by the contract number 19X037Q from Leidos Biomedical Research under Task Order HHSN26100071 from NCI.<\/p><\/li><\/ul>Acknowledgements<\/span><\/h3>