Işıl ESEN BOSTANCI, FATİH DÜZGÜN, GÜLGÜN YILMAZ OVALI, SERDAR TARHAN, YÜKSEL PABUŞÇU

Which temporal bone anatomical structures and pathologies could be best visualized by applying reconstruction to cross-sections obtained on an axial plane?

Aksiyel düzlemde elde edilen kesitlerin rekonstrüksiyonuyla hangi temporal kemik anatomik ve patolojik oluflumlar> en iyi görüntülenebilir? Amaç: Bu çal>flmada temporal kemik anatomik ve patolojik yap>lar>n>n aksiyel düzlem temporal kemik bilgisayarl> tomografi (BT) taramalar>nda elde edilen kesitlere rekonstrüksiyon uygulayarak bu oluflumlar>n hangi pozisyonda en iyi görüntülenebildi¤ini saptamay> amaçlad>k. Yöntem: Temmuz 2008 ile Mart 2009 aras>nda 60 hasta temporal kemik BT'si ile incelendi. De¤iflik aksiyel düzlem kesitlerinden retrokonstrüksiyon yöntemiyle çok düzlemli yeniden formatlanm>fl görüntüler elde ettik. Bulgular: Rekonstrükte görüntülerin anatomik ve patolojik ayr>nt>lar> daha iyi gösterdi¤ini ve anatomik oluflumlar>n ve patolojilerinin di¤er normal ö¤elerle iliflkilerinin de¤erlendirilmesine önemli katk> sa¤lad>¤>n> belirledik. Sonuç: Retrokonstrüksiyon yöntemiyle birden çok düzlemde görüntülerin yeniden formatlanmas>, yeni düzlemlerde farkl> anatomik ayr>nt>lar görüntülendi¤inden standart temporal kemik BT incelemelerinde kullan>lan koronal kesitleri görüntüleme gereklili¤ini azaltm>fl- t>r. n ald>¤> radyasyon dozu ve inceleme süresi azalt>labilir.

Aksiyel düzlemde elde edilen kesitlerin rekonstrüksiyonuyla hangi temporal kemik anatomik ve patolojik oluflumlar› en iyi görüntülenebilir?

Objective: In this study, we aimed to identify the position in which temporal bone anatomical structures and pathologies could be best visualized by applying reconstruction to cross-sections obtained on an axial plane in temporal bone computed tomography (CT) scans. Methods: Sixty patients were examined with temporal bone CT between July 2008 and March 2009. We obtained multiplanar reformatted images by applying retro-reconstruction on various planes from the axial plane sections. Results: We determined that the reconstructed images increased the anatomical and pathological details and significantly contributed to evaluating the relationship between anatomical structures and their pathologies with other normal components. Conclusion: Obtaining multiplanar reformatted images by retroreconstruction decreased the need for visualization of coronal sections used in standard temporal bone CT exams since the anatomical details were diversified using the new planes. In addition, the dose of radiation received by the patients and the duration of the examination could be reduced by eliminating routine coronal plane sections and obtaining new images using retro-reconstruction.

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