Wyniki wyszukiwania

1

Pretectal connections to the claustrum: an HRP retrograde transport study in cats

100%

Sloniewski P.

Acta Neurobiologiae Experimentalis

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1983

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tom 43

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nr 3

2

Virtual modelling of the surgical anatomy of the petrous bone

63%

Zielinski P., Sloniewski P.

Folia Morphologica

|

2001

|

tom 60

|

nr 4

343-346

The surgical anatomy of the petrous bone is difficult to learn and to imagine due to the porous structure. Obviously the surgeon’s training is based on cadaver dissections as we are still lacking good, versatile models of the temporal bone and its important structures. The clearly visible, rapid development of computer science provides us with new possibilities that should be immediately engaged in modelling and simulating the human anatomy. The virtual, three-dimensional computer model of the bony pyramid was created based on the tomographic x-ray 1 mm slices and evaluated in accordance to its usefulness in learning and planning the neurosurgical approaches to the petrous region. The model was created in the virtual reality markup language, in order to make it available through the Internet. The basic anatomy of the main surgical approaches used in this region was visualised and evaluated in accordance with the real, intraoperative anatomy. The model could be easily accessed through the Internet. It was user-friendly and intuitive. The model seemed to be helpful in planning the basic approaches to the petroclival region. Computer science, with the help of the virtual modelling techniques, gives us a powerful method of learning and training surgical anatomy and approaches, although cadaveric dissection still remains the main point of the surgeon’s training.

3

Dural adhesion as a cause of late clip slippage from the medial cerebral artery aneurysm

63%

Szmuda T., Sloniewski P.

Folia Morphologica

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2019

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tom 78

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nr 3

Background: A properly placed clip may slip off the aneurysm during the postoperative period. Many factors have been attributed to this complication, although clip adherence to the dural stitch has not been reported. Materials and methods: Following the single occurrence of such unusual complication, 64 similar medial cerebral artery (MCA) aneurysms were retrospectively investigated at a single institution. Clip adherence to the dura demonstrated in early postoperative computed tomography (CT) was a presumed factor of a late clip migration in this study. Results: In the series, there were 4 (6.3%) aneurysm remnants and 1 slipped clip that firmly adhered to the dura. In this particular case, the revision surgery revealed the spring coil firmly adhering to the dura in the previous suture line. Neither the occurrence of an aneurysm neck remnant nor clip slippage were related to the clip’s adherence to the dura in the analysis of the entire group (p > 0.05). On the contrary, application of a fenestrated clip did contribute to that finding in multivariate analysis (p < 0.01). Unlike the rest, two surgeons unintentionally tended to position the clip close to the dura (p < 0.01). The clip-to-dura distance measured in the follow-up CT angiography 1 year after the surgery differed from that in the postoperative CT in 83.8% of the cases and decreased by an average of 0.5 mm. Conclusions: Clip-to-dura adherence should be regarded as a normal finding in the postoperative CT following MCA aneurysm clipping. Surgeons should consider the possibility of clip head protrusion into the dural stitch line. (Folia Morphol 2019; 78, 3: 501–507)

4

Projections of the claustrum to some areas of the neocortex in the rat - an HRP study

63%

Morys J., Sloniewski P.

Folia Morphologica

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1986

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tom 45

|

nr 3

5

Projections of the amygdaloid body to the insular cortex in the cat

51%

Morys J., Sloniewski P., Narkiewicz O.

Acta Neurobiologiae Experimentalis

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1984

|

tom 44

6

Claustral single cell reactions to tooth pulp stimulation in cats

51%

Jastreboff P., Sikora M., Fredrychowski A., Sloniewski P.

Acta Neurobiologiae Experimentalis

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1983

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tom 43

|

nr 4-5

7

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Somatosensory evoked potentials following lesions of the claustrum

51%

Morys J., Sloniewski P., Narkiewicz O.

Acta Physiologica Polonica

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1988

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tom 39

|

nr 5-6

Moryś, J., Słoniewski, P. and Narkiewicz, O.: Somatosensory eyoked potentials following lesions of the claustrum. Acta physiol, pol., 1988; 39(5-6): 475-483. Ipsi- and contralateral cortical somatosensory evoked potentials (SEP) were recorded following median nerve stimulation in 12 patients with unilateral brain lesions and in 5 healthy subjects. Computed tomographic scans of brain were performed on admission. In all pa,tients with lesions of the claustrum there was absence of .SEP contralateral to the side of the lesion and ipsilateral to the stimulated nerve. This phenomenon did not appear in our material following lesions involving other structures e.g. thalamus от somatosensory cortex. Our observations suggest that the claustrum may influence deeply the contralateral somatosensory cortex. This may be due to the fact that a large part of the claustrum is involved in transmission of the sensory information from receptors to the somatosensory cortex.

8

Thalamic projections to the insular cortex in the cat

51%

Morys J., Sloniewski P., Narkiewicz O.

Folia Morphologica

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1984

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tom 43

|

nr 4

9

Future of the nerve fibres imaging: tractography application and development directions

51%

Krakowiak M., Sloniewski P., Dzierzanowski J., Szmuda T.

Folia Morphologica

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2015

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tom 74

|

nr 3

Tractography is a tool available in a growing number of centres, to enable planning of neurosurgical interventions. This method has some drawbacks and due to its increasing availability is causing a growing controversy over the possibility of an anatomical mapping of the nerve fibres. This article aims at summarising the application of the diffusion magnetic resonance in contemporary neurosurgery method, showing the usefulness and merits of its performance before surgical procedures, limitation of its application and recommendations for its improvement and more effective use for diagnostic purposes. (Folia Morphol 2015; 74, 3: 290–294)

10

Projections from the pretectothalamic border area to the somatosensory part of the claustrum: an autoradiographic study

51%

Sloniewski P., Pilgrim C., Morys J., Narkiewicz O.

Acta Neurobiologiae Experimentalis

|

1987

|

tom 47

|

nr 4

11

Origin and terminals of the pretectothalamoclaustral connections in the cat

51%

Morys J., Sloniewski P., Narkiewicz O., Pilgrim C.

Folia Morphologica

|

1987

|

tom 46

|

nr 3-4

12

Ascending connections of the supralemniscal field the insular cortex in the cat

51%

Morys J., Sloniewski P., Dziewiatkowski J., Sobinski M.

Folia Morphologica

|

1987

|

tom 46

|

nr 1-2

13

The influence of all-trans retinoic acid on the growth and apoptosis in human meningioma cells in vitro

51%

Zielinski P., Sloniewski P., Chrzan P.

Acta Neurobiologiae Experimentalis

|

1999

|

tom 59

|

nr 3

14

Magnetic resonance landmarks of the cavernous sinus and paracavernous region

51%

Hermann M., Bobek-Billewicz B., Sloniewski P.

Acta Neurobiologiae Experimentalis

|

1999

|

tom 59

|

nr 3

15

Surgical anatomy of anterior petrosectomy

51%

Sloniewski P., Zielinski P., Rynkowski M.

Folia Morphologica

|

2000

|

tom 59

|

nr 2

Neurosurgical procedures in the region of the petroclival region of the skull base require unique knowledge of the local anatomy. The measurements of this region considering the visible anatomical landmarks are helpful both during surgery and while planning the general schemes for the approach. We have evaluated the anatomy of the anterior surface of the petrous bone and of the middle fossa taking into consideration the surgical removal of part of the petrous bone — the anterior petrosectomy. We have measured the distances and angles between the chosen structures in this region. The measurements were taken on 10 skulls, on both sides. The results enrich the algorithm of the anterior petrosectomy.

16

Neurosurgical stereomorphometry in vivo - method description and error measurement

51%

Zielinski P., Dzierzanowski J., Sloniewski P.

Folia Morphologica

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2003

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tom 62

|

nr 1

Rules of geometry and stereomorphometry are often applied to narrow and deep neurosurgical approaches. Methods of research are based on the direct cadaver measurements, radiological analysis and intraoperative measurements. Newly developed devices allow direct morphometry to be performed in vivo, during the operation. We describe the use of the neuronavigation system Stealth Station by Medtronic for such stereomorphometric measurements and evaluate the precision of the described method.

17

Quantification of white matter fibre pathways disruption in frontal transcortical approach to the lateral ventricle or the interventricular foramen in diffusion tensor tractography

45%

Szmuda T., Sloniewski P., Szmuda M., Waszak P. M., Starzynska A.

Folia Morphologica

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2014

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tom 73

|

nr 2

Pathologies occupying the interventricular foramen (foramen of Monro — FM) or the anterior part of lateral ventricle (LV) are accessed by the transcortical or transcallosal route. As severing of rostral corpus callosum has been deemed inferior to cortical incision, the approaches through various points of frontal lobe have been developed. Superior (F1), middle (F2) frontal gyrus or occasionally superior frontal sulcus are used as an entry of neurosurgical corridor. In spite of the fact that every approach to LV or FM causes its characteristic irreversible damage to white matter, to date all of transcortical routes are regarded as equivalent. The current study compared the damage of main neural bundles between virtual trans-F1 and trans-F2 corridors by means of diffusion tensor tractography method (DTT) in 11 magnetic resonance imaging (MRI) exams from clinical series (22 hemispheres, regardless of dominance). Corpus callosum, cingulum, subdivisions I and II of superior longitudinal fasciculus (SLF I and SLF II), corticoreticular as well as pyramidal tracts crossing both approaches were subjected to surgical violation. Both approaches served a similar total number of fibres (0.94 to 1.78 [× 10³]). Trans-F1 route caused significantly greater damage of total white matter volume (F1: 8.26 vs. F2: 7.16 mL), percentage of SLF I fibres (F1: 78.6% vs. F2: 28.6%) and cingulum (F1: 49.4% vs. F2: 10.6%), whereas trans-F2 route interrupted more corticoreticular fibres (F1: 4.5% vs. F2: 30.7%). Pyramidal tract (F1: 0.6% vs. F2: 1.3%) and SLF II (F1: 15.9% vs. F2: 26.2%) were marginally more vulnerable in case of the access via middle frontal gyrus. Both approaches destroyed 7% of callosal fibres. Summarising the above DTT findings, trans-F2 route disrupted a greater number of fibres from eloquent neural bundles (SLF II, pyramidal and corticoreticular tracts), therefore is regarded as inferior to trans-F1 one. Due to lack of up-to-date guidelines with recommendations of the approaches to LV or FM, an individual preoperative planning based on DTT should precede a surgery. (Folia Morphol 2014; 73, 2: 129–138)

18

Measurements of the Obersteiner-Redlich zone of the vagus nerve and their possible clinical applications

45%

Sloniewski P., Korejwo G., Zielinski P., Morys J., Krzyzanowski M.

Folia Morphologica

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1999

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tom 58

|

nr 1

The aim of our study was to describe anatomical variability of the root entry zone (REZ), also called the Ohersteiner--Redlich zone, that represents the "junction zone" of glia and Schwann sheath of the cranial nerves. This zone has some clinical implications. The pulsatile compression of REZ by a vessel may produce clinical symptoms, such us trigeminal neuralgia, hemifacial spasm, glossopharyngeal neuralgia torticollis spasmodicus or even symptoms of essential hypertension when a vascular crross compression of REZ of a left vagus nerve is present. The vessel - cranial nerve contact in the skull base cysterns may be visualized in radiologic examinations, most accurately in magnetic resonance imaging. Because, we cannot distinguish the REZ from the rest of the vagus nerve in radiologic examinations we decided to measure the lenght of its REZ. The microanatomical study of the lenght of REZ zone of the vagus nerve was performed on 2l nerves taken from 17 human brain stems (12 men, 5 women, 14 left, 7 right), fixed with 8% buffered, formalin solution. Paraffin embedded tissue was cut into 1O-um-thick sections pararellel to the nerve longitudinal axis and stained with hematoxilin & eosin. Each of the nerves showed the presence of a zone of oligodendrocyte myelination, mean lenght 2 ą 0.3 mm. In 17 nerves the transitional zone formred a cone-like process, in 4 nerves was shaped irregularly. The length of REZ (oligodendrocyte myelination plus "glial dome") had the mean length 3.5 ą 0,9 mm.

19

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

39%

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

Folia Morphologica

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2014

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tom 73

|

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)

20

Localization of the visual area in the claustrum of the rat, rabbit and cat

39%

Zielinski P., Morys J., Kowianski P., Karwacki Z., Sadowski M., Sloniewski P., Narkiewicz O.

Acta Neurobiologiae Experimentalis

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1995

|

tom 55

|

nr 5

Ograniczanie wyników

Pretectal connections to the claustrum: an HRP retrograde transport study in cats

Virtual modelling of the surgical anatomy of the petrous bone

Dural adhesion as a cause of late clip slippage from the medial cerebral artery aneurysm

Projections of the claustrum to some areas of the neocortex in the rat - an HRP study

Projections of the amygdaloid body to the insular cortex in the cat

Claustral single cell reactions to tooth pulp stimulation in cats

Somatosensory evoked potentials following lesions of the claustrum

Thalamic projections to the insular cortex in the cat

Future of the nerve fibres imaging: tractography application and development directions

Projections from the pretectothalamic border area to the somatosensory part of the claustrum: an autoradiographic study

Origin and terminals of the pretectothalamoclaustral connections in the cat

Ascending connections of the supralemniscal field the insular cortex in the cat

The influence of all-trans retinoic acid on the growth and apoptosis in human meningioma cells in vitro

Magnetic resonance landmarks of the cavernous sinus and paracavernous region

Surgical anatomy of anterior petrosectomy

Neurosurgical stereomorphometry in vivo - method description and error measurement

Quantification of white matter fibre pathways disruption in frontal transcortical approach to the lateral ventricle or the interventricular foramen in diffusion tensor tractography

Measurements of the Obersteiner-Redlich zone of the vagus nerve and their possible clinical applications

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

Localization of the visual area in the claustrum of the rat, rabbit and cat