Sinovenator changii IVPP V20378 is a troodontid theropod dinosaur from the Early Cretaceous strata in Liaoning, northeastern China. The specimen is a nearly complete 3D-preserved skeleton. The postcranial elements are in sleeping posture and the skull is isolated from the rest. The skull suffered only slight deformation and distortion, completely preserving most of its elements except the left postorbital, parietal, and squamosal. The dataset comprises three .stl files of the skull, brain endocast, and inner ear of Sinovenator changii IVPP V20378. 

The skull and postcranial skeleton of this specimen were scanned separately at the Institute of Vertebrate Paleontology and Paleoanthropology, Beijing, China. The scanning was carried out using the 225 kV micro-computerized tomography (developed by the Institute of High Energy Physics, Chinese Academy of Sciences (CAS)) at the Key Laboratory of Vertebrate Evolution and Human Origins, CAS. The specimen was scanned with a beam energy of 100 kV and a flux of 100 mA at a resolution of 61 μm per pixel using a 360° rotation with a step size of 0.5° and an unfiltered aluminum reflection target. The total dataset of 1,536 slices was reconstructed using two-dimensional reconstruction software MOCUPY developed by the Institute of High Energy Physics, CAS. The segmentation and rendering of the digital models were conducted in Mimics 19.0 (Materilise, Belgium). The .stl files are directly exported from Mimics 19.0.