Postmortem changes of the human body are well known and broadly described in thanatology. Nevertheless, little is known about the influence of postmortem phenomena on the vascular system. Radiologic, noninvasive methods, such as computed tomography (CT) and magnetic resonance imaging (MRI), open new perspectives for exploring the inside of bodies and may contribute to the understanding of thanatology. Collapsed vessels and the presence of gas in the vascular system are common findings in postmortem imaging. Because of postmortem changes, blood distribution is complex, and knowledge of thanatologic changes is important to avoid misinterpretation and misdiagnosis.