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2013 | 72 | 4 |
Tytuł artykułu

Configurations of the circle of Willis: a computed tomography angiography based study on a Polish population

Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The aim of the study was to investigate the distribution of the circle of Willis variants in Polish population by means of computed tomography angiography (CTA). The results were then analysed and compared with another study that used similar methods but that was carried out on an ethnically distinct population. Patients presenting with intracranial pathology were excluded from the initial study population. In total, 250 CTA belonging to 129 female and 121 male patients were reviewed. A modified classification system of the circle was proposed, which took into consideration the anterior and the posterior aspects of the circle individually. The typical variant of Willis’s circle occurred in 16.80% of cases. The anterior and the posterior portions of the circle were normal in 47.20% and 26.80% of the patients respectively. As for the anterior part, lack of the anterior communicating artery was the most frequent abnormality (22.80%). Bilateral absence of posterior communicating arteries was the most common anomaly in the posterior part of the circle (29.20%). This type of anomaly was also the most common, when taking into consideration the entire circle (12.00%). There were statistically significant differences between the age groups and genders when considering the occurrence of an incomplete circle. Overall, a substantial proportion of patients manifested clinically important variants that were incapable of providing collateral circulation. Comparison with other imaging-based and cadaveric studies revealed noticeable differences, that may have resulted from the variable technical features of other studies or other factors such as the ethnical origins of the studied populations. (Folia Morphol 2013; 72, 4: 293–299)
Wydawca
-
Czasopismo
Rocznik
Tom
72
Numer
4
Opis fizyczny
p.293-299,fig.,ref.
Twórcy
  • Department of Anatomy, Jagiellonian University Medical College, Kopernika 12, 31-034 Kraków, Poland
autor
  • Department of Anatomy, Jagiellonian University Medical College, Kopernika 12, 31-034 Kraków, Poland
autor
  • Department of Anatomy, Jagiellonian University Medical College, Kopernika 12, 31-034 Kraków, Poland
  • Department of Anatomy, Jagiellonian University Medical College, Kopernika 12, 31-034 Kraków, Poland
  • Department of Anatomy, Jagiellonian University Medical College, Kopernika 12, 31-034 Kraków, Poland
autor
  • Department of Radiology, Jagiellonian University Medical College, Krakow, Poland
autor
  • Department of Anatomy, Jagiellonian University Medical College, Kopernika 12, 31-034 Kraków, Poland
Bibliografia
  • 1. Ardakani SH, Dadmehr M, Nejat F (2008) The cerebral arterial circle (Circulus Arteriosus Cerebri) an anatomical study in fetus and infant samples. Pediatr Neurosurg, 44: 388–392.
  • 2. Bor ASE, Velthuis BK, Majoie CB, Rinkel GJ (2008) Configuration of intracranial arteries and development of aneurysms. Neurol, 70: 700–705.
  • 3. Bugnicourt JM, Garcia PY, Peltier J, Bonnaire B, Picard C, Godefroy O (2009) Posterior circle of Willis: a risk factor for migraine? Headache, 49: 879–886.
  • 4. De Silva KRD, Silva R, Amaratunga D, Gunasekera WS, Jayesekera RW (2011) Types of the cerebral arterial circle (circle of Willis) in a Sri Lankan Population. BMC Neurology, 11: 5.
  • 5. Eftekhar B, Dadmehr M, Ansari S, Ghodsi M, Nazparvar B, Ketabchi E (2006) Are the distributions of variations of circle of Willis different in different populations? Results of an anatomical study and review of literature. BMC Neurology, 6: 22.
  • 6. El-Barhoun EN, Gledhill SR, Pitman AG (2009) Circle of Willis artery diameters on MR angiography: An Australian reference database. JMIRO J Med Imaging and Radiat Oncology, 53: 248–260.
  • 7. Han A, Yoon DY, Chang SK, Lim KJ, Cho BM, Shin YC, Kim SS, Kim KH. (2011) Accuracy of CT angiography in the assessment of the circle of Willis: comparison of volume-rendered images and digital subtraction angiography. Acta Radiol, 52: 889–893.
  • 8. Hoksbergen AWJ, Legemate DA, Csiba L Csáti G, Síró P, Fülesdi B (2003) Absent collateral function of the circle of willis as risk factor for ischemic stroke. Cerebrovasc Dis, 16: 191–198.
  • 9. Hoksbergen AWJ, Legemate DA, Ubbink DT, Jacobs MJ (2000) Collateral variations in circle of Willis in atherosclerotic population assessed by means of transcranial color-coded duplex ultrasonography. Stroke, 31: 1656–1660.
  • 10. Kayembe KNT, Sasahara M, Hazama F (1984) Cerebral aneurysms and variations in the circle of Willis. Stroke, 15: 846–850.
  • 11. Kapoor K, Singh B, Dewan LIJ (2008) Variations in the configuration of the circle of Willis. Anatomical Science International, 83: 96–106.
  • 12. Krabbe-Hartkamp MJ, van der Grond J, de Leeuw FE de Groot JC, Algra A, Hillen B, Breteler MM, Mali WP (1998) Circle of Willis: morphologic variation on three-dimensional time-of-flight MR angiograms. Radiology, 207: 103–111.
  • 13. Li Q, Li J, Lv F, Li K, Luo T, Xie P (2011) A multidetector CT angiography study of variations in the circle of Willis in a Chinese population. J Clin Neurosci, 18: 379–383.
  • 14. Macchi C, Lova RM, Miniati B, Gulisano M, Pratesi C, Conti AA, Gensini GF. (2002) The circle of Willis in healthy older persons. J Cardiovasc Surg (Torino), 43: 887–890.
  • 15. Papantchev V, Hristov S, Todorova D, Naydenov E, Paloff A, Nikolov D, Tschirkov A, Ovtscharoff W (2007) Some variations of the circle of Willis, important for cerebral protection in aortic surgery: a study in Eastern Europeans. Eur J Cardiothorac Surg, 31: 982–989.
  • 16. Van Der Lugt A, Buter TC, Govaere F (2004) Accuracy of CT angiography in the assessment of a fetal origin of the posterior cerebral artery. Eur Radiol, 14: 1627–1633.
  • 17. Van Overbeeke JJ, Hillen B, Tulleken CAF (1991) A comparative study of the circle of Willis in fetal and adult life. The configuration of the posterior bifurcation of the posterior communicating artery. J Anat, 176: 45–54.
  • 18. Van Raamt AF, Mali WPTM, van Laar PJ, van der Graaf Y (2006) The fetal variant of the circle of Willis and its influence on the cerebral collateral circulation. Cerebrovasc Dis, 22: 217–224.
  • 19. Yu-Ming C, Chih-Yang L, Po-Jung P, Ching-Po L (2008) Posterior communicating artery hypoplasia as a risk factor for acute ischemic stroke in the absence of carotid artery occlusion. J Clin Neurosci, 15: 1376–1381.
Typ dokumentu
Bibliografia
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