Journals / Erciyes Tıp Dergisi / 2010 / Cilt: 32 - Sayı: 3

Evaluation of cerebral blood flow alterations in patients with induced hypothyroidism

İndüklenmiş hipertiroidizmli hastalarda serebral kan akımı değişikliklerinin değerlendirilmesi

Pages
183–188
Publication Date
2022-10-17
DOI
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All ratios were assessed statistically.Results: In brain SPECT images that were analyzed using SPM2 method, no significant change between hypothyroidic and euthyroidic period was detected.Conclusion: It is demonstrated that induced short-term period of hypothyroidism does not alter regional cerebral blood flow.

📌 3 Key Takeaways

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Objective & Hypothesis:Purpose: In this study; it was aimed to show the affect of induced hypothroidism on regional cerebral blood flow.Material and Methods: In our study, 33 total or near total thyroidectomy patients with well- differentiated thyroid carsinomas who admitted to our department for I-131 therapy between December 2006 and January 2008 were included.
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Key Findings & Data:The mean interval for diagnosing hypothyroidism was 32.06± 11.12 day and the mean TSH level was 69.41±28.48 µIU/ml.
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Conclusion & Impact:All ratios were assessed statistically.Results: In brain SPECT images that were analyzed using SPM2 method, no significant change between hypothyroidic and euthyroidic period was detected.Conclusion: It is demonstrated that induced short-term period of hypothyroidism does not alter regional cerebral blood flow.
🔬Design:Research Article
📍Scope:2006 Verileri
⚙️Variables:Domain Parameters

Abstract

Purpose: In this study; it was aimed to show the affect of induced hypothroidism on regional cerebral blood flow.Material and Methods: In our study, 33 total or near total thyroidectomy patients with well- differentiated thyroid carsinomas who admitted to our department for I-131 therapy between December 2006 and January 2008 were included. The mean interval for diagnosing hypothyroidism was 32.06± 11.12 day and the mean TSH level was 69.41±28.48 µIU/ml. Tc-99m HMPAO (heksametil propilenamin oksim) brain SPECT images were taken. Euthyroidism was established 6-8 weeks after application of ablation therapy and L-thyroxin suppression treatment, and Tc-99m HMPAO brain SPECT studies were repeated. The reconstructed brain SPECT images were evaluated with SPM2 (statistical parametric mapping 2) method. The activity in ROI's (region of interest) taken from bilateral region of prefrontal, limbic, parietal, occipital, temporal and global brain were divided to voxel numbers in same ROI and mean signal rate were obtained. All ratios were assessed statistically.Results: In brain SPECT images that were analyzed using SPM2 method, no significant change between hypothyroidic and euthyroidic period was detected.Conclusion: It is demonstrated that induced short-term period of hypothyroidism does not alter regional cerebral blood flow.

Özet

Amaç: Bu çalışmada; indüklenmiş hipotiroidizmin bölgesel serebral kan akımı üzerine etkisinin gösterilmesi amaçlanmıştır.Gereç ve Yöntem: Çalışmaya Aralık 2006-Ocak 2008 tarihleri arasında total veya totale yakın tiroidektomi operasyonu yapılan ve I-131 tedavisi verilmesi planlanan iyi diferansiye tiroid kanserli 33 hasta alındı. Hastaların hipotiroidiye girme süreleri 32,06±11,12 gün ve TSH düzeyleri 69,41±28,48 µIU/ml idi. Tc-99m HMPAO (heksametil propilenamin oksim) beyin SPECT görüntüleri elde olundu. Ablasyon tedavileri verilip L-tiroksin ile supresyon tedavisi başlandıktan yaklaşık 6-8 hafta sonra hastalar ötiroid hale geldiğinde çalışmalar tekrarlandı. Rekonstrukte edilen beyin SPECT görüntüleri SPM2 (statistical parametric mapping 2) metodu kullanılarak değerlendirildi. Bilateral prefrontal, limbik, parietal, oksipital ve temporal bölgeler ve tüm beyinden alınan ROI'lerdeki (region of interest (ilgi alanı)) aktivite, ROI alanı içindeki voksel sayısına bölünerek ortalama sinyal oranı elde edildi. Alınan tüm değerler, tüm beyinden alınan ortalama değere orantılandı ve elde edilen tüm oranlar istatistiksel olarak karşılaştırıldı.Bulgular: SPM2 metodu ile değerlendirilen beyin SPECT görüntülerinde; hipotiroidik dönem ile ötiroidik dönem arasında bölgesel serebral kan akımında belirgin değişiklik izlenmedi.Sonuç: İndüklenmiş kısa süreli hipotiroidizmin bölgesel beyin kan akımında anlamlı bir değişikliğe neden olmadığı gözlenmiştir.

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Cite This Article

IŞIK, İ., GÖNÜL, A. S., TUTUŞ, A., KULA, M. (2022). Evaluation of cerebral blood flow alterations in patients with induced hypothyroidism. Erciyes Tıp Dergisi, Cilt: 32 - Sayı: 3, 183–188. https://ajindex.com/articles/502547

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