Ahmet Tolgay AKINCI, Gizem Akgül ÖZDEMİR

BİLGİSAYARLI TOMOGRAFİDE HEMATOM HACMİNİN UZMAN OLMAYANLAR TARAFINDAN HESAPLANMASI İÇİN ELİPSOİD YÖNTEMLER İLE CAVALİERİ YÖNTEMİNİN KARŞILAŞTIRILMASI

Amaç: İntraserebral kanamalar tüm inmelerin yaklaşık %20'sini oluşturur ve yüksek morbidite ile mortaliteye sahiptir, hastaların yaklaşık %60'ı bir yıl içinde ölür ve hayatta kalanların ise %20'si engelli yaşar. İntraserebral kanama hacminin olumsuz sonuç ile güçlü bir ilişkisi vardır; bu nedenle, hacmin hızlı ve doğru bir şekilde ölçülmesi klinik karar verme için çok önemlidir. Bu çalışmada bilgisayarlı tomografi değerlendirmesinde özel eğitim almamış hekimler tarafından intraserebral hematom hacimlerini hesaplamak için elipsoid yöntemlerle Cavalieri yönteminin karşılaştırılması amaçlanmıştır. Yöntem: Ardışık 30 hastanın bilgisayarlı tomografi görüntülerindeki hematom hacimleri elipsoid yöntemleri ve Cavalieri yöntemi ile ölçüldü. Dört yöntemle hesaplanan hematom hacimleri istatistiksel olarak karşılaştırıldı. Bulgular: 'Cavalieri', 'yayvan elips (abc)', 'yayvan küre (aac)' ve 'küre (aaa)' yöntemleri için medyan hematom hacimleri (çeyrekler arası aralık) sırasıyla 23,2 (27,4), 37,2 (45,8), 22,1 (30,75) ve 14,4 (31,87) idi. Friedman tekrarlanan ölçümler ANOVA testi, hematom hacmini değerlendirmek için dört yöntemin sonuçlarının önemli ölçüde farklı olduğunu belirledi (p

COMPARISON OF THE ELLIPSOID METHODS AND THE CAVALIERI METHOD, FOR CALCULATING HEMATOMA VOLUME IN COMPUTED TOMOGRAPHY BY NONSPECIALIST

Objective: Intracerebral haemorrhages account for approximately 20% of all strokes and have higher morbidity and mortality, nearly 60% ofpatients die within a year, and 20% of the survivors live disabled. The volume of intracerebral haemorrhage has a strong association with theunfavourable outcome; therefore, fast and accurate measurement of the volume is crucial for clinical decision making. This study aimed to comparethe ellipsoid methods and the Cavalieri method for calculating intracerebral hematoma volumes by physicians without special education oncomputed tomography assessment.Methods: The hematoma volumes in the computed tomography images of 30 consecutive patients were measured via ellipsoid methods andthe Cavalieri method. The calculated volumes of hematoma by the four methods were compared statistically.Results: The median haematoma volumes (interquartile ranges) for ‘Cavalieri’, ‘prolate ellipse (abc)’, ‘prolate sphere (aac)’ and ‘sphere (aaa)’methods were 23.2 (27.4), 37.2 (45.8), 22.1 (30.75), and 14.4 (31.87) respectively. A Friedman repeated measures ANOVA test determined that theresults of the four methods to evaluate the haematoma volume differ significantly (p

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