Journals / Okmeydanı Tıp Dergisi / 2015 / Cilt: 31 - Sayı: 2

Optic Nerve Sheath Diameter: Comparison Between Ultrasonography and Magnetic Resonance Imaging

Optik Sinir Kılıfı Çapı Ölçümlerinde MRG ve USG Aradındaki Uyum

Pages
71–74
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: When good quality USG images that correctly depict retrobulbar anatomic structures exist, ONSD can be accurately measured with USG and there is a good correlation between transbulbar sonography and MRI measurements of the ONSD.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: To determine the degree of agreement between measurements of the optic nerve sheath diameter by ultrasonography (US) and magnetic resonance imaging (MRI).
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Key Findings & Data:Material and Methods: 72 eyes of 36 patients who had undergone cranial MRI study for various reasons and undergone orbita USG maximum 1 week after MRI, were involved in the study.
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Conclusion & Impact:Conclusion: When good quality USG images that correctly depict retrobulbar anatomic structures exist, ONSD can be accurately measured with USG and there is a good correlation between transbulbar sonography and MRI measurements of the ONSD.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: To determine the degree of agreement between measurements of the optic nerve sheath diameter by ultrasonography (US) and magnetic resonance imaging (MRI). Material and Methods: 72 eyes of 36 patients who had undergone cranial MRI study for various reasons and undergone orbita USG maximum 1 week after MRI, were involved in the study. During study, only the best-quality MRI and ultrasound images were used.All subjects ONSD were measured by transbulbar sonography (9.11 and 13 MHz) and 1.5 Tesla MRI (axial plane) 3 mm below the globe. The measurements of ONSD were compared for agreement between the 2 modalities using the method by ICC and BlandAltman. Results: ONSD measurements made with 9 MHz linear probe were found as 6.04±0.75 (4.4-7.3 mm), with 11 MHz probe as 6.08±0.74 (4-7 mm), with 13 MHz probe as 6.06±0.73 (4.3-7.3 mm) and with MRI found as 6.16±0.73 (5-7 mm). Significant correlation was found between MRI and 9 MHz (97.7 %, ICC: 0.977; p<0.01), 11 MHz (99 %, ICC: 0.990; p<0.01) and 13 MHz (98.6 %, ICC: 0.986; p<0.01) linear probe measurements. Conclusion: When good quality USG images that correctly depict retrobulbar anatomic structures exist, ONSD can be accurately measured with USG and there is a good correlation between transbulbar sonography and MRI measurements of the ONSD.

Özet

Amaç: MRG ve USG ile ölçülen OSKÇ değerlerini karşı- laştırarak, OSKÇ değerlendirilmesinde MRG ve USG arasındaki uyumu belirlemek. Gereç ve Yöntemler: Çeşitli nedenlerden dolayı kliniğimizde kranial MRG tetkiki yapılan ve MRG tetkikinden en fazla bir hafta sonra her iki gözüne yönelik orbita USG incelemesi yapılan 36 olgu ve 72 göz incelendi. Çalışma sırasında yalnızca iyi kalitedeki MRG ve USG görüntüleri kullanıldı. Her olgunun OSKÇ ölçümü; 1.5 Tesla MRG cihazi kullanılarak T2 ağırlıklı görüntülerde, axial planda, papillanın 3 mm altından yapıldı. USG ölçümleri 9,11 ve 13 MHz ayarlı lineer problarla, hasta sırtüstü yatar pozisyonda, papillanın 3 mm altından yapıldı. MRG ve USG ölçümleri arasındaki uyum düzeylerini belirlemede ICC ve Bland-Altman uyum sınırları kullanıldı. Bulgular: Olguların 9 MHZ’lik lineer prob ile yapılan OSKÇ ölçümleri ortalama 6,04±0,75 (4,4-7,3 mm), 11 MHZ’lik lineer prob ile yapılan OSKÇ ölçümleri ortalama 6,08±0,74 (4-7 mm), 13 MHZ’lik lineer prob ile yapılan OSKÇ ölçümleri ortalama 6,06±0,73 (4,3-7,3 mm), MRG ile yapılan OSKÇ ölçümleri ortalama 6,16±0,73 (5-7 mm) bulundu. MRG ile 9 MHz’lik lineer prob arasında % 97,7 (ICC: 0,977; p<0.01), MRG ile 11 MHz’lik lineer prob arasında % 99 (ICC: 0,990; p<0,01), MRG ile 13 MHz’lik lineer prob arasında % 98,6 (ICC: 0,986; p<0,01) düzeyinde anlamlı ilişki saptandı. Sonuç: Retrobulbar anatomik yapıları doğru şekilde gösteren iyi kalitede USG görüntüleri varlığında OSKÇ transbulbar sonografi ile güvenilir bir şekilde ölçülebilir.

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Cite This Article

ŞAFAK, K. Y., TÜRKOĞLU, Ö., ŞENCAN, B. D., TOKGÖZ, S. Ö. (2015). Optic Nerve Sheath Diameter: Comparison Between Ultrasonography and Magnetic Resonance Imaging. Okmeydanı Tıp Dergisi, Cilt: 31 - Sayı: 2, 71–74. https://ajindex.com/articles/291775

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