Göz Hastalıklarında Görüntüleme Teknikleri

Özet

Göz hastalıklarının giderek yaygınlaşması ve hayvan sahiplerinin bu konudaki farkındalığının artması, oftalmolojik teşhislerde özelleşmiş ekipman kullanımını önemli hale getirmiştir. Özellikle gözün anatomik yapılarının veya devam eden patolojilerinin belirsiz olduğu durumlarda, bu ekipmanlar klinik oftalmolojik muayenelere önemli destek sağlar. Veteriner oftalmolojide göz, orbita ve optik sinir lezyonlarının teşhisinde genellikle direkt oftalmolojik muayene yapılırken, karmaşık vakalarda standart yöntemler yetersiz kalabilir ve ilave görüntüleme tekniklerine ihtiyaç duyulabilir. Canlı dokular arasındaki ilişkileri mikroskobik düzeyde non-invaziv bir şekilde görselleştirmeyi amaçlayan bu görüntüleme teknikleri—ultrasonografi, manyetik rezonans görüntüleme (MRG), bilgisayarlı tomografi (BT) ve orbital radyografi—tek başına değerlendirilediklerinde kesin teşhis sağlamasa da elde edilen bulgular, hastanın anamnez bilgisi ve klinik geçmişi ile eşzamanlı klinik verileri dikkate alınarak, tanıların doğru konulmasına ve etkili tedavi planlamalarının oluşturulmasına yardımcı olur. Bu görüntüleme teknikleri, klinik muayene verilerini doğrulayarak ve kimi zaman hastanın durumu hakkında ilave bilgiler sunarak, birçok göz hastalığını doğru anlamamızı sağlar. Hastaların klinik yönetiminin kalitesini önemli ölçüde artırır; aynı zamanda, sağlık sorunlarının hızlı ve doğru bir şekilde teşhis edilmesini de sağlayarak tedavi sürecini hızlandırır. Görüntüleme tekniklerinin etkin kullanımı ile göz hastalıklarına ilişkin olarak teşhis ve tedavinin gecikmesi nedeniyle ortaya çıkabilecek muhtemel kalıcı görme kaybı riski de azalır.

The increasing prevalence of eye diseases and the growing awareness of owners on this issue have made the use of specialized equipment in ophthalmological diagnoses crucial. Especially in cases where the anatomical structures of the eye or ongoing pathologies are unclear, this equipment provides significant support for clinical ophthalmological examinations. In veterinary ophthalmology, direct ophthalmological examination is typically performed to diagnose lesions of the eye, orbit, and optic nerve. However, in complex cases, standard methods may be insufficient, and imaging techniques may be required. These imaging techniques—ultrasonography, magnetic resonance imaging (MRI), computed tomography (CT), and orbital radiography—aim to non-invasively visualize the relationships between living tissues at a microscopic level. While they may not always provide a definitive diagnosis, the findings obtained can assist in making accurate diagnoses and developing effective treatment plans when considered alongside the patient’s clinical history and concurrent clinical data. These imaging techniques allow us to accurately understand many eye diseases by verifying diagnostic results and significantly improve the quality of clinical management of patients. At the same time, they accelerate the treatment process by enabling rapid and accurate diagnosis of health issues, thus reducing the risk of permanent vision loss that could arise due to delays in diagnosis and treatment.

Referanslar

Grahn BH, Stewart WA, Towner R A, et al. Magnetic resonance imaging of the canine and feline eye, orbit, and optic nerves and its clinical application. The Canadian Veterinary Journal.1993; 34(7): 418-424.

Dennis R, Johnson PJ, McLellan GJ. Diagnostic imaging of the eye and orbit. In: Goul D, McLellan GJ (eds) BSAVA Manual of Canine and Feline Ophthalmology.3rd ed. England: British Small Animal Veterinary Association; 2014. p. 24-50.

Greco A, Meomartino L, Gnudi G, et al. Imaging techniques in veterinary medicine. Part II: Computed tomography, magnetic resonance imaging, nuclear medicine. European Journal of Radiology Open. 2023; 10: 100467.doi: 10.1016/j.ejro.2022.100467

Scrivani PV. Introduction to Head and Neck Imaging in Animals.Veterinary Head and Neck Imaging.USA: 1st ed. John Wiley & Sons, 2022.

Donaldson D and Hartley C. Ophthalmic Examination and Imaging. In: Gelatt KN (ed). Essentials of Veterinary Ophthalmology. 3rd ed.USA: John Wiley & Sons;2014. p.130-140.

Gelatt KN, Plummer CE. Essentials of Veterinary Ophthalmology.USA: 4th ed. John Wiley & Sons; 2022.

Jones BA, Cotterill N, Drees R, et al. Tumours involving the retrobulbar space in cats: 37 cases. Journal of Feline Medicine and Surgery.2022; 24(6): e116-e123. doi: 10.1177/1098612X221094947

Taveras JL, Haik BG. Radiography of the eye and orbit: a historical overview. Survey of ophthalmology. 1998; 32(5): 361-368.doi: 10.1016/0039-6257(88)90098-7.

Or L, Gazit I, Harstein ME. Evaluation and Management of Acquired Nasolacrimal Duct Obstruction. In: Sindwani R (ed). Endoscopic Surgery of the Orbit. 9th ed. China: Elsevier; 2021. p.89-93.

Nykamp SG, Scrivani PV, Pease AP. Computed tomography dacryocystography evaluation of the nasolacrimal apparatus. Veterinary Radiology & Ultrasound. 2004; 45(1): 23-28.doi: 10.1111/j.1740-8261.2004.04004.x

Gelatt KN, Plummer CE. Essentials of Veterinary Ophthalmology.USA: 4th ed. John Wiley & Sons; 2022.

Choi YH, Jang JH, Kim JY. Dacryoendoscopy for dacryocystitis management in a dog: A case report. Veterinary Medicine and Science. 2021; 7(3): 674-679.doi: 10.1002/vms3.410

Fledelius HC. Ultrasound in ophthalmology. Ultrasound in medicine & biology. 1997; 23(3): 365-375. doi: 10.1016/S0301-5629(96)00213-X

Ragab GA, Fathy MZ. Ultrasonographic findings of some ocular affections in dogs. Assiut Veterinary Medical Journal. 2018; 64(157): 32-37.

Dar M, Tiwari DK, Patil DB, et al. B-scan ultrasonography of ocular abnormalities: a review of 182 dogs. Iranian Journal of Veterinary Research. 2014;15(2):122-126.

Dudea SM. Ultrasonography of the eye and orbit. Medical ultrasonography. 2011; 13(2): 171-174.

LeBedis CA, Sakai O. Nontraumatic orbital conditions: diagnosis with CT and MR imaging in the emergent setting. Radiographics.2008; 28(6): 1741-1753.doi: 10.1148/rg.286085515

Pizzirani S, Penninck D, Spaulding K. Eye and Orbit. In: Penninc D, d’Anjou MA(eds). Atlas of Small Animal Ultrasonography. 2nd ed. USA: John Wiley & Sons; 2015. p. 19-54.

Prashant Raghavan, Max Wintermark, Steven A. Newman et al. Orbits 2016. [On line]. (https://radiologykey.com/orbits [Accessed on 22th October 2024]).

Beniwal R, Das B, Jawre S, et al. Diagnostic approaches in veterinary ophthalmology: A brief review. The Pharma Innovation Journal.2023; 12(3):2525-2529.

Ryan Lafollette. Diagnostics: Ocular Ultrasound 2020. [On line]. https://www.tamingthesru.com/blog/diagnostics/ocular-us [Accessed on 27th April 2024].

Tsuka T, Sunden Y, Morita T, et al. Ultrasonography and Postmortem Magnetic Resonance Imaging of Bilateral Ocular Disease in a Heifer. Ruminants. 2024; 4(1):125-135.

Hallowell GD, Bowen IM. Practical ultrasonography of the equine eye. Equine Veterinary Education. 2007; 19(11): 600-605.doi: 10.2746/095777307X254536

De La Hoz Polo M, Torramilans Lluís A, Pozuelo Segura O, et al. Ocular ultrasonography focused on the posterior eye segment: what radiologists should know. Insights into imaging. 2016; 7: 351-364.

Gonzalez EM, Rodriguez A, Garcia I. Review of ocular ultrasonography. Veterinary Radiology & Ultrasound.2001; 42(6): 485-495.

Kilker BA, Holst JM, Hoffmann B. Bedside ocular ultrasound in the emergency department. European Journal of Emergency Medicine. 2014; 21(4): 246-253.doi: 10.1097/MEJ.0000000000000070

Gekeler F, Gmeiner H, Völker M, et al. Assessment of the posterior segment of the cat eye by optical coherence tomography (OCT). Veterinary ophthalmology. 2007; 10(3): 173-178.doi: 10.1111/j.1463-5224.2007.00532.x

Moore D, Lamb C. Ocular ultrasonography in companion animals: a pictorial review. In Practice. 2007; 29(10): 604-610.doi: 10.1136/inpract.29.10.604

Boroffka SA, Görig C, Auriemma E, et al. Magnetic resonance imaging of the canine optic nerve. Veterinary Radiology & Ultrasound. 2008; 49(6): 540-544.

Van der Woerdt A, Wilkie DA, Myer CW. Ultrasonographic abnormalities in the eyes of dogs with cataracts: 147 cases (1986–1992). Journal of the American Veterinary Medical Association. 1993; 203(6), 838-841.doi: 10.2460/javma.1993.203.06.0838

Bentley E, Miller PE, Diehl KA. Use of high-resolution ultrasound as a diagnostic tool in veterinary ophthalmology. Journal-American Veterinary Medical Association. 2003; 223(11): 1617-1622.doi: 10.2460/javma.2003.223.1617

Silva EG, Pessoa GT, Moura LS, et al. Biometric, B-mode and color Doppler ultrasound assessment of eyes in healthy dogs. Pesquisa Veterinária Brasileira. 2018; 38, 565-571.

Morgan RV, Ring RD, Ward DA, et. al. Magnetic resonance imaging of ocular and orbital disease in 5 dogs and a cat. Veterinary Radiology & Ultrasound.1996; 37(3): 185-192.doi: 10.1111/j.1740-8261.1996.tb01219.x

David Yousem. CT and MRI of the Eye 2008. [On line]. https://radiologyassistant.nl/head-neck/orbita/pathology) Accessed on 22th October 2024].

Ivan D, Ohlerth S, Richter H, et al. 3T high-resolution magnetic resonance imaging, conventional ultrasonography and ultrasound biomicroscopy of the normal canine eye. BMC Veterinary Research. 2022; 18(1): 67.

Morgan RV, Daniel GB, Donnell RL. Magnetic resonance imaging of the normal eye and orbit of the dog and cat. Veterinary Radiology & Ultrasound. 1994; 35(2): 102-108.

Wisne ER, Zwingenberger AL. Atlas of Small Animal CT and MRI.USA:1st ed. John Wiley & Sons; 2015.

KIM JY. Diagnosis of postretinal blindness caused by intracranial disease in three dogs. Turkish Journal of Veterinary & Animal Sciences. 2019; 43(1): 148-154.

Tsuka T, Okamoto Y, Sunden Y, et al. Case report: Ultrasonography and magnetic resonance imaging of anterior segment dysgenesis in a calf. Frontiers in Veterinary Science. 2022; 9: 794255. doi: 10.3389/fvets.2022.794255

MRI sequences (overview) [On line]. https://radiopaedia.org/articles/mri-sequences-overview [Accessed on 22th October 2024].

Jessica Ahn, Vi Dinh. Ocular Ultrasound Mde Easy: Step-By-Step Guide 2023. [On line]. https://www.pocus101.com/ocular-ultrasound-made-easy-step-by-step-guide/[Accessed on 22th October 2024].

Wippold FJ. Head and neck imaging: the role of CT and MRI. Journal of Magnetic Resonance Imaging: An Official Journal of the International Society for Magnetic Resonance in Medicine. 2007; 25(3): 453-465.

May JL, Garcia-Mora J, Edwards M, Rossmeisl JH. An Illustrated Scoping Review of the Magnetic Resonance Imaging Characteristics of Canine and Feline Brain Tumors. Animals. 2024; 14(7): 1044.

Prasad M, Ghosh M, Patki HS, et al. (2021). Imaging Techniques in Veterinary Disease Diagnosis. In Advances in Animal Disease Diagnosis. CRC Press; 2021. pp. 103-145.

Thrall, D. E. Textbook of veterinary diagnostic radiology-E-book. Elsevier Health Sciences.2012; p.135-153.

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