Mechanical asphyxia is one of the leading causes of violent death, which determines the improvement of the evidence base for this type of death. At forensic examination, the morphological picture of asphyxia doesn’t differ from sudden death, as well as with other types and mechanisms sudden (acute) death, which makes it difficult to determine the immediate cause of death. The article discusses to use case of computed tomography (CT) for visualize formation, which found on the corpse (injury of bones, stab wounds, determination of the level of location of a foreign object in the oropharynx child) with the establishment of the immediate cause of death. Posthumous CT examination made it possible to assess the state of "hard to reach" for the classic study of corpse zones, confirm the direct cause of death, identify the presence of gas in the abdominal cavity and small pelvis that can’t be established during sectional examination of a corpse.