Akademik Veri Yönetim Sistemi
Cumhuriyet Dental Journal, cilt.21, sa.3, ss.167-172, 2018 (Scopus)
© Cumhuriyet University Faculty of Dentistry 2018.Amaç: Bu çalismanin amaci Konik Isinli Bilgisayarli Tomografi (KIBT) ile hacim hesaplamalarinda kesit kalinliginin olasi etkilerini arastirmaktir. Materyal ve Metod: Sigir femur basinda kemik defektlerini taklit eden intraosseoz kaviteler KIBT ile tarandi. Kavitelerin stereolojik bir metod olan Cavalieri prensibiyle hacim hesaplamalarinda 0,1 mm, 0,2 mm, 0,3 mm, 0,4 mm, 0,5 mm, 1 mm, 2 mm, 3 mm, 4 mm ve 5 mm kalinliginda ardisik kesitler kullanildi. Hesaplanan hacimler daha sonra Arsimet prensibiyle hesaplanan hacimlerle kiyaslandi. Bulgular: 0,1 mm, 0,2 mm ve 0,3 mm kesit kalinliginda Cavalieri prensibiyle hesaplanan hacimler Arsimet Prensibiyle hesaplanan hacimlerle uyumluydu (p > 0,05). KIBT görüntülerinde tüm defektler için, 0,1 mm, 0,2 mm, 0,3 mm kesit kalinliginda hesaplanan hacimler gerçek hacimlerle uyumluyken, 0,4 mm, 0,5 mm, 1 mm, 2 mm, 3 mm, 4 mm ve 5 mm kesit kalinliginda hesaplanan hacimler gerçek hacimlerden farkli bulundu. Sonuç: Cavalieri prensibiyle hacim hesaplanalanacagi zaman, gerçek hacimle uyumlu hesaplamalar yapilabilmesi için en ince kesit kalinligi seçilmelidir. © Cumhuriyet University Faculty of Dentistry 2018.Objective: The purpose of this study is to investigate possible effects of the slice thickness on volume estimations with Cone Beam Compute Tomography (CBCT). Materials and Methods: Intraosseous cavities representing bone defects on femoral condyles of bovines were scanned by CBCT. Consecutive slices at 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, and 5 mm thickness were used to estimate the volumes of the cavities using Cavalieri principle of stereological methods then compared with the volumes obtained by Archimedean principle. Results: The volumes estimated by Cavalieri principle in 0.1 mm, 0.2 mm and 0.3 mm thickness slices were consistent with the volumes obtained by Archimedean principle (p > 0.05). For all the defects on the CBCT images, the volumes of the defects which were calculated with Cavalieri principle in 0.1 mm, 0.2 mm and 0.3 mm slice thickness were found to be consistent with the actual volumes, however, the volumes that were calculated in 0.4 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, and 5 mm slice thickness were found to differ from the actual volumes. Conclusion: When volume calculations were made by Cavalieri principle, the thinnest slice section should be chosen to make calculations consistent with actual volumes.