İnsan fötuslarında Willis poligonuna ait varyasyonların araştırılması
Küçük Resim Yok
Tarih
1999
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Çalışmada ortalama yaşları 20 hafta olan abort fötusların Willis poligonlarındaki varyasyonlar, bulundukları segmentler ve sıklıklarının araştırılması amaçlandı. Bu amaçla her bir poligonu oluşturan segmentler kırmızı lateks ile doldurularak, poligonların fotoğrafları çekildi. Çalışılan fötusların sekiz tanesinde (% 26) normal Willis poligonu gözlenirken, 24'ünde ise (%74) asimetrik poligon belirlendi. Poligonların tamamında arterlerin tam olduğu gözlendi. Poligonlarda bulunan varyasyon çeşitleri ve oranları kaydedildi. Poligonlardaki konfigurasyon oranları belirlendi. Bu çalışmada fötuslardaki varyasyon oranlarının yetişkinler için bildirilenlerden daha az olduğu ve üçüncü A2 insidansının yetişkinlerdeki oranlarla uyum gösterdiği tesbit edildi.
Summary: In this study, it was aimed to investigate the variations of circle of Willis, their frequency and the side of localization in the average of 20 months old aborted fetuses. For this purpose, all segments consisting each circle were infused with red latex and than the circles were photographed. It has been observed that in 8 of the fetuses studied (26 %) the circle were normal, whereas in 24 of them (74 %) were asymmetrical circle. It was observed that the arteries were completed in all of the circles. The types of the variations in the circles and their frequency were recorded. The proportional configuration in the circles was determined. In this study, it was concluded that variation ratios of fetuses were less than those reported for adults and the frequency of third A2 were consistent with the ratios of the adults.
Summary: In this study, it was aimed to investigate the variations of circle of Willis, their frequency and the side of localization in the average of 20 months old aborted fetuses. For this purpose, all segments consisting each circle were infused with red latex and than the circles were photographed. It has been observed that in 8 of the fetuses studied (26 %) the circle were normal, whereas in 24 of them (74 %) were asymmetrical circle. It was observed that the arteries were completed in all of the circles. The types of the variations in the circles and their frequency were recorded. The proportional configuration in the circles was determined. In this study, it was concluded that variation ratios of fetuses were less than those reported for adults and the frequency of third A2 were consistent with the ratios of the adults.
Açıklama
Anahtar Kelimeler
Cerrahi, Nörolojik Bilimler
Kaynak
Türk Nöroşirürji Derg.
WoS Q Değeri
Scopus Q Değeri
Cilt
9
Sayı
1
