Wyniki wyszukiwania - Biblioteka Nauki

1

Scattering of ultrasonic wave on a model of the artery

100%

Wójcik J. , Powałowski T. , Tymkiewicz R. , Lamers A. , Trawiński Z.

Archives of Acoustics

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2006

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tom Vol. 31, No. 4

471-479

EN

The study was aimed at elaboration of a mathematical model to describe the process of acoustic wave propagation in an inhomogeneous and absorbing medium, whereas the wave is generated by an ultrasonic probe. The modelling process covered the phenomenon of ultrasonic wave backscattering on an elastic pipe with dimensions similar to the artery section. Later on, the numerical codes were determined in order to calculate the fields of ultrasonic waves, as well as backscattered fields for various boundary conditions. Numerical calculations make it possible to define the waveforms for electric signals that are produced when ultrasonic waves, being reflected and backscattered by an artery model, are then received by the ultrasonic probe. It is the signal which pretty well corresponds with the actual RF signal that is obtained during measurements at the output of an ultrasonic apparatus.

2

Sciatic vessels – a case report

100%

Łukasz Gałuszka Ł. , Natalia Leksa N. , Dawid Leksa D. , Adam Uryniak A. , David Aebisher D. , Dorota Bartusik-Aebisher D.

European Journal of Clinical and Experimental Medicine

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2020

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nr 4

326-327

EN

Introduction. Sciatic vessels most often accompany the sciatic nerve. Sciatic vessels are very rare. Aim. In this paper we determine the procedure in sciatic vessels surgical treatment. Description of the case. We present the case of a 75-year-old patient with symptoms of acute right lower limb ischemia. The patient was discharged home in good condition, and remains in outpatient control to this day. Conclusion. The popliteal artery proved to be available, but much deeper than usual.

3

Alterations in collagen of umbilical cord arteries in patients with EPH-gestosis

100%

Bankowski E. , Romanowicz L. , Jaworski S.

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nr 2

4

A morphological study of the posterior communicating artery

100%

Uz A. , Mine E. K.

Folia Morphologica

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2004

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tom 63

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nr 4

EN

This study aims to identify and yield a better understanding of the origin of the posterior communicating artery, its perforating branches and the relations in the vicinity of that artery. In 30 brains filled with a mixture of latex through the internal carotid and basilar arteries the posterior communicating artery originated from the posterior aspect of the C4 part of the internal carotid artery in 20 hemispheres (66.6%) and from its postero-lateral part in 8 hemispheres (26.6%). In 2 hemispheres (6.6%), however, it originated from the anterior aspect of the internal carotid artery. In 8 hemispheres (26.6%) a foetal type of posterior communicating artery was observed. It was 11.94 mm (8.03–15.07 mm) in length from the origin of the PCoA to the point of union with the posterior cerebral artery. The PCoA gave 5, 8 perforating branches (4–9). The distance of the origin of these branches from the origin of the PCoA was 3.30 mm (0.06–9.05) and the area occupied by the origins of the perforating branches was 4.53 mm (0.01–9.07). The perforating branches of the posterior communicating artery were generally dense in the initial 2/3 of the artery. Consequently, the posterior third of the posterior communicating artery seems to be a safer area during surgical operations. As the perforating branches are dense in the initial 2/3 of the artery, this region is at highest risk of damage during operations.

5

Proteoglycans of human umbilical cord arteries.

88%

Tomasz Gogiel1 , Jaworski S.

Acta Biochimica Polonica

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2000

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tom 47

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nr 4

1081-1091

EN

Proteoglycans (PGs) were dissociatively extracted from human umbilical cord arteries (UCAs) with 4 M guanidine hydrochloride containing Triton X-100 and protease inhibitors, purified by Q-Sepharose anion exchange chromatography and lyophilized. They were analysed by gel filtration, SDS/PAGE and agarose gel electrophoresis before and after treatment with chondroitinase ABC. It was found that the PG preparation was especially enriched in chondroitin/dermatan sulphate PGs. The predominant PG fraction included small PGs that emerged from Sepharose CL-2B with Kav = 0.74. Their molecular mass, estimated by SDS/PAGE, was 160-200 kDa and 90-150 kDa, i.e. it was typical for biglycan and decorin, respectively. Treatment with chondroitinase ABC yielded the core proteins of 45 and 47 kDa, characteristic for both small PGs. Remarkable amounts of the 45 kDa protein were detected in non-treated PG samples, suggesting the presence of free core proteins of biglycan and decorin. Large PGs were present in lower amounts. In intact form they were eluted from Sepharose CL-2B with Kav = 0.17 and 0.43. Digestion with chondroitinase ABC yielded the core proteins with a molecular mass within the range of 180-360 kDa but predominant were the bands of 200, 250 and 360 kDa. The large PGs probably represent various forms of versican or perlecan bearing chondroitin sulphate chains.

6

Subgross and macroscopic investigation of the coeliac artery in the chinchilla (Chinchilla lanigera)

88%

Ozdemir V. , Cevik Demirkan A. , Akosman M. S.

Folia Morphologica

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2013

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tom 72

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nr 3

EN

The knowledge of branching and variations of the coeliac artery is clinically important, especially in the surgical operations and non-surgical treatments. Moreover, the chinchillas abdominal region have been used as a model in some surgical experimental researches. In this frame, we have aimed to explain the branching of this artery in the chinchillas detailedly. A total of 10 adult, healthy, male chinchillas (chinchilla lanigera) were used to investigate the origin and the course of the coeliac artery and its branches. Coloured latex was injected into the carotid arteries, following conventional anatomical applications. The results indicated that the coeliac artery was divided into 4 branches such as left gastric artery, hepatic artery, splenic artery and gastrolienal artery. The left gastric artery was a continuity of the coeliac artery and the main vessel of the stomach. The hepatic artery was divided into the left lateral branch, the left medial branch and the right branch. The splenic artery was covered by the pancreas tissue and sent branches to the pancreas. The gastrolienal artery was supplying the fundus of the stomach and the dorsal extremity of the spleen. We believe that the findings will be of help to the researchers interested in the anatomical area, surgeons and experimental researches. (Folia Morphol 2013; 72, 3: 258–262)

7

Types of terminal division of the posterior cerebral artery in man

88%

Czerwinski F. , Michalczyk K. , Mierzwa A.

Folia Morphologica

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1996

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tom 55

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nr 3

8

Rare case of the accessory radial artery

88%

Czerwinski F. , Michalska G. , Mierzwa A. , Krzanowski K.

Folia Morphologica

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1997

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tom 56

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nr 3

9

Main arteries of the head and circulus arteriosus at representatives of the order of pinnipeds

88%

Frackowiak H. , Godynicki S.

Folia Morphologica

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1996

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tom 55

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nr 4

10

Chances of using splenic artery as an accessory source of blood supply for kidneys

88%

Koziorowski A. , Porwolik K. , Kurlej W. , Porwolik M.

Folia Histochemica et Cytobiologica. Supplement

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1996

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tom 34

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nr 1

11

Variations of the anterior communicating artery

88%

Krupa B. , Krupa U.

Folia Morphologica

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1998

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tom 57

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nr 3

12

Arterial, neural and muscular variations in the upper limb

75%

Coskun N. , Sarikcioglu L. , Donmez B. O. , Sindel M.

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nr 4

347-352

EN

During our routine dissection studies we observed arterial, neural and muscular variations in the upper limbs of an adult male cadaver. In this case we observed the superficial brachial artery origination from the third part of the axillary artery, communications between the musculocutaneous and median nerves, variant formation of the brachial plexus, origination of the profunda brachii artery from the posterior circumflex humeral artery and supernumerary tendons of the abductor pollicis longus muscle. We think that such variations should be kept in mind during surgical and diagnostic procedures.

13

Compensating crural anastomoses in chronic critical limb ischaemia

75%

Szpinda M.

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tom 64

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nr 1

17-21

EN

Compensating crural anastomoses develop in patients with multi-level occlusion of the calf arteries in the course of atherosclerosis, arteriitis, diabetes, and in vascular malformations of the limbs. The peroneal artery is frequently the only patent calf vessel, especially in diabetic patients who have advanced tibial occlusive disease. The purpose of this study was to identify different types of compensating crural anastomoses in chronic critical limb ischaemia. Using combined anatomical-radiographic and statistical methods, 86 compensating crural anastomoses were studied in 59 specimens of lower limbs (amputated at the thigh) in the course of chronic critical ischaemia. Three types of compensating crural anastomosis and their components were identified. The most common type (55.8%) was the posterior tibioperoneal anastomosis. Less common (23.3%) was the intertibial anastomosis and least common (20.9%) the anterior tibioperoneal anastomosis. The posterior tibioperoneal anastomosis was concurrent with anterior tibioperoneal anastomosis in 26.3% of cases and with the intertibial anastomosis in 15.3% of cases. The great importance of the peroneal artery in the formation of natural crural collateral circulation should encourage vascular surgeons to consider peroneal bypasses.

14

Comparative studies of blood vessels in the hamster, rat and guinea pig

75%

Zywert A. , Jakubowski H. , Frackowiak H. , Mackowiak P.

Acta Biologica Cracoviensia. Series Zoologia

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2009

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tom 51

55-61

15

The choroid plexus of the fourth ventricle and its arteries

75%

Sharifi M. , Ciolkowski M. , Krajewski P. , Ciszek B.

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tom 64

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nr 3

194-198

EN

The choroid plexus of the fourth ventricle consists of two symmetrical parts located in the roof of the ventricle and protruding through its openings, the foramina of Luschka and Magendie. The arteries supplying the choroid plexus of the fourth ventricle are difficult to approach because of their deep location within the cerebellopontine angles and the cerebellomedullary fissure. They originate from multiple sites on the cerebellar arteries, and pass near the vital structures of the pons and medulla. The increasing use of the operating microscope and endoscopy during operations in the posterior cranial fossa has created a need for better understanding of the microsurgical anatomy of the plexus and its arteries. The arteries of 15 human brain-stems with cerebelli were injected with coloured gelatine and fixed in 10% formaldehyde solution. The specimens were studied under an operating microscope. The choroids plexus on each side of the midline was divided into four segments, the medial and lateral horizontal segments and the rostral and caudal sagittal segments, in order to facilitate the description of their blood supply. The anterior inferior cerebellar artery (AICA), the posterior inferior cerebellar artery (PICA) and the superior cerebellar artery (SCA) were the main supplying vessels. AICA supplied the portion of the plexus in the cerebellopontine angles and the adjacent part of the lateral recess of the fourth ventricle through the foramina of Luschka. PICA supplied most of the choroid plexus in the roof and the median opening of the fourth ventricle.

16

Microscopic structure of swine fetus aorta in relation to their biomechanical properties in prenatal period

75%

Dudek A. , Kuropka P. , Pospieszny N. , Szotek S. , Kobielarz M. , Bedzinski R.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2008

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tom 50

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nr 1

17

Modelling of artery stiffness for driver’s heart rate monitoring systems development

75%

Kernytskyy I. , Yakovenko Y. , Storchun Y. , Horbay O. , Humenyuk R. , Sholudko Y.

Acta Scientiarum Polonorum. Architectura

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2020

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tom 19

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nr 3

18

A case of an accessory testicular artery

75%

Loukas M. , Stewart D.

Folia Morphologica

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2004

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tom 63

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nr 3

EN

Dissection of an adult male cadaver revealed the presence of an accessory left testicular artery in addition to the normal right and left testicular arteries. In this case the accessory left testicular artery originated from the ventrolateral wall of the descending aorta. The origin was located between the superior mesenteric artery and the left renal vein. The accessory artery continued to course from the aorta laterally toward the superior ventral portion of the left kidney and then passed ventrally to the kidney on its course inferiorly to the pelvic region. Communication was observed between the accessory left testicular artery and the left renal artery. This variation of gonadal vasculature is of interest from the point of view of its embryogenesis, and possible clinical significance.

19

The middle colic artery originating from the coeliac trunk

75%

Yildilrim M. , Celik H. H. , Yildiz Z. , Tatar I. , Aldur M. M.

Folia Morphologica

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2004

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tom 63

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nr 3

EN

A case is reported of an anomalous origin of the middle colic artery. The middle colic artery originated from the coeliac trunk (CT) instead of the superior mesenteric artery, the normal place of origin. The colon receives its blood supply from the superior and inferior mesenteric arteries. Since modern colon surgery requires a more detailed anatomy of blood supply, many articles have been published on the anatomy and variations of the arteries of the colon. However, the incidence of such an anomaly is low and there have been few previous reports. These arterial variations underscore the importance of performing vascular studies prior to major abdominal surgery.

20

The arteries of the base of the brain in the N. American mink [Mustela vison [Brisson, 1756]]

75%

Goscicka D. , Stankiewicz W. , Szpinda M.

Archivum Veterinarium Polonicum

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1995

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tom 35

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nr 1-2