Differential diagnosis of the limitation of the formation of hemorrhages of traumatic origin, cerebral infarction, ischemic and hemorrhagic genesis by polarization-phase tomography

Author(s):  
Alexander Ushenko ◽  
Olexander V. Dubolazov ◽  
Yuriy Ushenko ◽  
Yu. Tomka ◽  
A. Karachevtsev ◽  
...  
2008 ◽  
Vol 15 (3) ◽  
pp. 295-300 ◽  
Author(s):  
N. Dougu ◽  
S. Takashima ◽  
E. Sasahara ◽  
Y. Taguchi ◽  
S. Toyoda ◽  
...  

2021 ◽  
Vol 2 ◽  
pp. 21-24
Author(s):  
Marta Garazdiuk ◽  
Viktor Bachynskyі ◽  
Olena Nechytailo ◽  
Oleksandr Garazdiuk

Differential diagnosis of intracerebral hemorrhage due to traumatic and non-traumatic origin is a challenging issue, especially in the absence of visible body injuries and other signs of violence. For a forensic expert-practitioner, the main thing is objectivity, accuracy, and speed of obtaining the result, which could fully satisfy the methods of laser polarimetry in the case of differential diagnosis of hemorrhages of traumatic and non-traumatic origin in the human brain matter. The purpose: To develop forensic criteria for the differential diagnosis of intracerebral hemorrhage of traumatic and non-traumatic origin using Mueller-matrix microscopy of linear dichroism. Materials and methods: The object of the study was brain matter samples, collected in 115 corpses of both sexes aged 22 to 86 years with accurately known causes of death. The causes of death included coronary artery disease, traumatic brain hemorrhage, ischemic brain infarction, and non-traumatic brain hemorrhages. Brain matter samples have been frozen rapidly, and histological sections have been made using a freezing microtome. The slices have been evaluated using the method of azimuthal-invariant Mueller-matrix microscopy, followed by mathematical and statistical processing of the results.  Results: significant topographic heterogeneity of Mueller-matrix invariants of brain matter samples linear dichroism maps among all research groups have been found. Individual and significant variations of dispersion, asymmetry, and kurtosis magnitude have confirmed the heterogeneity of Mueller-matrix invariants. The difference of images and histograms among groups is explained by the presence of necrotic changes in the case of ischemic brain necrosis and blood cells in the brain matter samples. For the set of central statistical moments of the 1st, 3rd, and 4th orders, which characterize the distributions of circular dichroism, the method of MM-microscopy in the differentiation of samples of non-hemorrhage and hemorrhage groups reaches a satisfactory level - 78% - 84%. Conclusions: Brain matter samples Muller-matrix microscopy of linear dichroism is effective for solving diagnostic problems of forensic medicine related to evaluating the cause of death from intracerebral hemorrhage of various origins. Diagnostic efficiency of Mueller-matrix mapping of polarization manifestations of linear dichroism method for intergroup differentiation of samples of deaths from traumatic hemorrhage (Group 2) and ischemic cerebral infarction (Group 3) reaches a satisfactory level of 79 - 84%.


2020 ◽  
Vol 26 (4) ◽  
pp. 42
Author(s):  
Paul Galvez ◽  
Nathan Moreau ◽  
Mathilde Fenelon ◽  
Jean-Marie Marteau ◽  
Sylvain Catros ◽  
...  

Introduction: Pterygoid hamulus syndrome (PHS) is a little-known differential diagnosis of orofacial pain. It is characterized by oropharyngeal pain, secondary to inflammatory bursitis of the tensor veli muscle of post-traumatic origin, frequently fostered by an associated hypertrophy of the hamular process. Observation: A 64-year-old female patient, type 2 diabetic, consulted for constant posterior palatal pain located near to 17, lasting for 10 years. The inspection did not reveal any mucosal lesions. Right hamulus palpation increased the pain and revealed hamulus hypertrophy. A diagnosis of PHS was evoked. Comment: A review of the literature is proposed. The treatment of PHS is initially conservative, but a surgical treatment can be proposed in case of morphological anomalies. Conclusion: PHS is a little-known syndrome whose diagnosis must be mentioned by the oral surgeon faced with chronic oropharyngeal pain. The diagnosis is clinical and radiological, the treatment is medical and/or surgical.


Author(s):  
Guillaume Saliou ◽  
Marie Théaudin ◽  
Claire Join-Lambert Vincent ◽  
Raphaëlle Souillard-Scemama

2011 ◽  
Vol 27 (1) ◽  
pp. 39-44 ◽  
Author(s):  
Shih-Meng Yeh ◽  
Jia-Jung Lee ◽  
Chi-Chih Hung ◽  
Hung-Chun Chen ◽  
葉時孟 ◽  
...  

2021 ◽  
Vol 9 (1) ◽  
pp. 115-126
Author(s):  
Olga E. Agranovich ◽  
Galina A. Ikoeva ◽  
Elena L. Gabbasova ◽  
Ekaterina V. Petrova ◽  
Vladimir M. Kenis ◽  
...  

This article analyzes the literature related to flaccid paresis and paralysis of the upper extremities in children during the first months of life. This pathology is a heterogeneous group of diseases with different etiopathogenesis. There are various courses of flaccid paresis and paralysis of the upper extremities in children: damage to the spinal cord, brachial plexus, peripheral nervous system to the level of the brachial plexus, and isolated damage to peripheral nerves. According to the time of occurrence, flaccid paresis and paralysis can be divided into three groups: antenatal, intranatal, and postnatal pathology. The main mechanism of occurrence of this pathology is intranatal trauma. More rare causes of flaccid paresis and paralysis of the upper extremities are antenatal conditions of dysplastic and traumatic origin, postnatal damage to the peripheral nervous system due to trauma or infection. Congenital contractures of the upper extremities combined with flaccid paralysis are connected with genetically determined diseases of the lower motor neurons and congenital myopathies, intrauterine injuries of the brachial plexus peripheral nerves. This article discusses the issues of topical and differential diagnosis of this pathology, the clinical picture suitable for each period of the childs life, and the prognosis of the disease. This research will be useful not only for neurologists, but also for specialists of related specialties: orthopedists, physiotherapists, and neonatologists for making correct the diagnosis, providing adequate treatment, and predicting its results.


2020 ◽  
Vol 1 ◽  
pp. 18-23
Author(s):  
Marta Garazdiuk ◽  
Viktor Bachynskіy ◽  
Olena Nechytailo ◽  
Oleksandr Garazdiuk ◽  
Svitlana Malanchuk

An issue that is often debated in forensic traumatology is the differential diagnosis of hemorrhages into the human brain substance (HBS) of traumatic and non-traumatic genesis. Objectives. This study aims to identify new criteria for objective forensic differentiation of hemorrhages of traumatic origin, cerebral infarction of ischemic and hemorrhagic genesis by using the method of complex degree of mutual anisotropy. For this study native sections of HBS from 125 corpses were used in the case of: death from coronary heart disease - 35 (28%) of native sections (Group 1 - control); hemorrhages of traumatic genesis - 30 (24%) sections (Group 2); ischemic cerebral infarction - 30 (24%) native sections(Group 3); and hemorrhages of non-traumatic genesis - 30 (24%) native sections (Group 4). Results. The statistical moments of the third and fourth orders, which characterize the asymmetry and excess of the complex degree of mutual anisotropy module size distributions, the strength of the method of polarization-correlation microscopy in the differentiation of the samples of the histological sections of the brain of control and experimental groups reached a good level — 87%-90%. Conclusion. The method of complex degree of mutual anisotropy allows differentiating with great precision the genesis of hemorrhage into the substance of the brain.


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