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Emotional and cognitive empathy disturbances in right hemisphere - ischemic stroke - damaged patients. SPECT imaging pilot study

100%

Kliszcz J. , Gasecki D. , Bandurski T. , Nyka W.

nr 4

2250230

The purpose of the study was to investigate the association between cerebral blood flow (CBF) and empathy in patients suffering from ischemic brain injury. Empathy is an essence of human relationships. It inspires people to meet experiences and needs of others. Its emotional and cognitive components subserve a broad range of adaptive social behaviors. 21 right hemispheric - ischemic stroke - patients were examined by the use of two psychological methods: Questionnaire Measure Emotional Empathy and Interpersonal Reactivity Index. Single photon emission computed tomography (SPECT) has been applied to determine the correlates of lesion location and some aspects of emotional and cognitive empathy.Hemispheric asymmetry indexes were also calculated and correlated with empathy scores. Significant negative correlation were found between cerebral blood flow in left basal ganglia and Fantasy Scale, left parietal lobe and Personal Distress, while significant positive correlation was seen between cerebral blood flow in right parietal lobe and Appreciation of the Feelings of Unfamiliar and Distant Others.

The posterior communicating artery: morphometric study in 3D angio-computed tomography reconstruction. The proof of the mathematical definition of the hypoplasia

75%

Dzierzanowski J. , Szarmach A. , Sloniewski P. , Czapiewski P. , Piskunowicz M. , Bandurski T. , Szmuda T.

nr 3

Background: The aim of this study was to investigate the morphometry of the posterior communicating artery (PCoA), on the basis of angio-computed tomography (CT), and to give proof of the mathematical definition of the term “hypoplasia of the PCoA“. Materials and methods: One hundred 3-dimensional (3D) angio-CT images, performed in adult patients with bilateral reconstruction of the PCoA (200 results) were used to calculate the morphometry of the vessel. Results: The average length of the vessel on the right side was 14.48 ± 3.47 mm, and on the left side 14.98 ± 4.77 mm (in women 14.75 mm, in men 14.70 mm). The mean of the diameter at the “proximal” point (the junction with P1) on the right side was 1.49 ± 0.51 mm, and on the left 1.46 ± 0.47 mm (in women 1.44 mm and in men 1.51 mm). The mean of the diameter in the “distal” part (the connection with ICA) on the right side was 1.4 ± 0.49 mm, and on the left 1.37 ± 0.41 mm (in women 1.38 mm, and in men 1.39 mm). No statistical correlation between the length and the diameter of the PCoA in relation to the sex and side was shown. On the basis of our measurements, we defined the hypoplasia of the artery as the estimated value less than the average diameter minus the standard deviation. The percentage distribution was as follows: the left artery 15.5%, the right artery 24%, women 11.5%, and the men 9%. Similarly to the above parameters, we have not found any statistical differences. The presence of the foetal origin was noted in 25% of the radiological examinations. The infundibular widening was visualised in 11.5% of cases of 3D reconstructions. The agenesis of PCoA was found in 9% (never bilaterally), and in 1 case the unilateral duplication of the artery was observed. No statistical differences between those parameters in relation to sex and the examined side were revealed. Conclusions: Morphological calculation of the PCoA on the basis of angio-CT from adult patients did not show any statistical differences depending on sex or the investigated side. The presented method of the calculations proved to be useful for the mathematical definition of the term “hypoplasia of the PCoA”. (Folia Morphol 2014; 73, 3: 286–291)

Near-InfraRed Transillumination (NIR- TI) a new non-invasive tool for exploration of intracranial homeostasis and monitoring of its impairments

63%

Frydrychowski A. F. , Kaczmarek J. W. , Juzwa W. , Rojewski M. , Pluciński J. , Gumiński W. , Kwiatkowski C. , Lass P. , Bandurski T.

1999

tom Vol. 19, no. 2

99-108

Recent research by multidisciplinary team of physiologists and experts on telecommunications and signal processing resulted in the invention of a new opto-electronic technique ofNear-InfraRed Transillumination (NIR-TI) which enables non-invasive on-line assessment of alterations in the width of the subarachnoid space (SAS). Analysis of the constant and fast-variable components of the Transillumination Quotient (cc- TQ and fvc- TQ) provides information on long-period, e.g. respiratory and positional changes in the width of SAS, and on the short-period fluctuations of that width of cardiovascular origin. The qualities of NIR- TI make it suitable for both incidental assessment of the width of the subarachnoid space (SAS) and amplitude of cerebrovascular pulsation (ACVP) as well as for prolonged monitoring of variations in these two parameters.

Najnowsze badania prowadzone przez multidyscyplinarny zespół fizjologów i ekspertów w dziedzinie telekomunikacji i przetwarzania sygnałów zaowocowały opracowaniem nowej opto-elektronicznej metody transiluminacji w bliskiej podczerwieni (NIR- TI), która umożliwia bieżącą nieinwazyjną ocenę kierunku i wielkości zmian szerokości przestrzeni podpajęczynówkowej (SAS). Analiza składowych stałej i szybkozmiennej ilorazu transiluminacji (TQ) dostarcza informacji o długookresowych, tj. oddechowych i pozycyjnych zmianach szerokości SAS, a także krótkookresowych fluktuacjach szerokości SAS, zależnych od funkcji serca i naczyń krwionośnych. Zalety NIR- TI czynią tę metodę przydatną zarówno do przygodnej oceny szerokości SAS i wielkości tętnienia naczyń wewnątrzczaszkowych (ACVP), jak i do długotrwałego monitorowania zmian tych dwóch parametrów.