Abstract
Differential diagnosis of the cause of death (CD) from ischemic cerebral infarction (ICI), hemorrhages of traumatic (HTG) and non-traumatic (HNG) genesis exclude the violent nature of death. The aim of our work was to develop forensic criteria for hemorrhage differentiation of traumatic and non-traumatic genesis and ICI by azimuthal-invariant Mueller-matrix images of linear dichroism of histological sections of brain substance (HBS). For the study were used native sections of HBS from 130 corpses in the case of: death from coronary heart disease – 40 of native sections (group 1 – control); HTG – 30 sections (group 2), ICI – 30 native sections (group 3), HNG – 30 native sections (group 4). Measuring the coordinate allocation meanings of parameters of polarization in the points of microscopic images was carried out at the location of the standard stokes-polarimeter. The effectiveness of intergroup differentiation of samples of deaths from traumatic hemorrhage and ischemic cerebral infarction reaches a satisfactory level and is 76-83%. Efficiency between group differentiation of samples of deaths from nontraumatic and traumatic hemorrhages reaches a satisfactory level and is 75-82%. As for differentiation between ischemic cerebral infarction and nontraumatic hemorrhages thise method is ineffective.
Highlights
Traumatic brain injury is one of the most common types of mechanical damage to the human body [7, 8, 9, 10, 12, 24]
In forensic practice there are cases when the body was found at home under unexplained circumstances and later during the autopsy hemorrhage into the substance of the human brain (HBS) was detected
Differential diagnosis of the cause of death (CD) from ischemic cerebral infarction (ICI), hemorrhages of traumatic (HTG) and non-traumatic (HNG) genesis excluded the violent nature of death [10, 12, 23]
Summary
Traumatic brain injury is one of the most common types of mechanical damage to the human body [7, 8, 9, 10, 12, 24]. In forensic practice there are cases when the body was found at home under unexplained circumstances and later during the autopsy hemorrhage into the substance of the human brain (HBS) was detected. In this case forensic authorities raise questions about the genesis of hemorrhage: traumatic or non-traumatic. There are studies in which it is noted that traumatic brain injury (TBI) and strokes can coexist or occur one on background of another one, which further complicates the situation [22]. It should be noted that the incidence of hemorrhage in the brain necessitates the study of structural alterations of HBS and the determination of reliable criteria for hemorrhage differentiation
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