Journals / Molecular Imaging and Radionuclide Therapy / 2013 / Cilt: 22 - Sayı: 3

Radyoaktif İyotun Karotis İntima Media Duvar Kalınlığına Etkisi

The Effect of Radioiodine on the Intima Media Thickness of the Carotid Artery

Pages
85–89
DOI
—
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AI Summary & Key Takeaways

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

Because I-131 uptake was lower in patients with nodular goitre, I-131 in systemic circulation was higher.

📌 3 Key Takeaways

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Objective & Hypothesis:Aim: The radiation can induce vessel injury.
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Key Findings & Data:There are a few studies demonstrating an increase in intima-media thickness (IMT) of the common carotid artery (CCA) after radiotherapy, especially in head and neck cancers.
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Conclusion & Impact:Because I-131 uptake was lower in patients with nodular goitre, I-131 in systemic circulation was higher.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Aim: The radiation can induce vessel injury. The result of this injury can be severe and life-threatening. There are a few studies demonstrating an increase in intima-media thickness (IMT) of the common carotid artery (CCA) after radiotherapy, especially in head and neck cancers. We evaluated the effect of I-131 to the IMT of the CCA in the patients who were treated for hyperthyroidism. Methods: 38 patients (25M, 13W) referred to our department for radioiodine treatment with the diagnosis of nodular goitre (25 patients) and diffuse hyperplasia (Graves disease (GD), 13 patients) were included to the prospective study. An USG was performed for all the patients before therapy, 3, 6 and 12 months after radioiodine therapy in order to measure IMT of CCA and the femoral artery (FA). The IMT was measured at the level of proximal part of bulbus anteriorly on the left and right side. The IMT of FA was measured just before the bifurcation. Results: There was a statistically significant increase in IMT of both CCA and FA bilaterally in nodular hyperthyroid patients. However, in the patients with Graves disease, there was only statistically significant increase in the left IMT of CCA at 0-3rd, 0-6th month measurements and in the right IMT of FA at 0-3rd month measurements. Conclusion: Though the limitation of the study is the interobserver and intraobserver variability, it was seen that I-131 therapy might affect the IMT of CCA in the patients with NG. I-131 effect on the IMT of CCA in patients with nodular goitre was higher than the IMT of CCA in patients with GD. I-131 effect on the IMT of CCA might be due to administered dose and adjacency. The interesting point of our study was the increased thickness of IMT in FA. We think that the increase in IMT is due to the systemic effect of radioactivity circulating in the blood vessel. I-131 effect on the IMT of FA in patients with nodular goitre was higher than the IMT of FA in the patients with GD due to I-131 uptake of thyroid gland. Because I-131 uptake was lower in patients with nodular goitre, I-131 in systemic circulation was higher.

Özet

Amaç: Radyasyon damar hasarına neden olabilir. Bu hasar ciddi ve yaşamı tehdit edici olabilir. Özellikle baş ve boyun kanserlerinde radyoterapi sonrası karotid arterin (KA) intima-media duvarının kalınlığının (IMT) arttığını gösteren az sayıda çalışma vardır. Biz hipertiroidi nedeniyle radyoaktif iyot ile tedavi edilen hastalarda I-131’in KA’in IMT’na olan etkisini araştırdık. Yöntemler: Nodüler guatr (25 hasta) ve diffüz hiperplazi (Graves hastalığı (GD), 13 hasta) tanısı ile radyoaktif iyot tedavisi için kliniğimize başvuran 38 hasta (25 erkek, 13 kadın) çalışmaya dahil edildi. Tüm hastalara tedavi öncesi ve tedavi sonrası 3, 6 ve 12. aylarda ultrasonografi (USG) yapıldı. USG ile her iki sağ/sol KA ve femoral arter (FA)’lerin IMT’leri ölçüldü. CA ‘in IMT ölçümü bulbusun proksimal düzeyinden, FA’in IMT ölçümü bifürkasyondan hemen önce yapıldı. Bulgular: Nodüler hipertiroidi hastalarında, her iki taraf KA ve FA’ in IMT’lerinde istatistiksel olarak anlamlı bir artış saptanırken, Graves hastalarında sadece sol KA’in IMT’si 0-3 ve 0-6. ay arasında, sağ KA’in ise sadece 0-3. ay arasında istatistiksel olarak anlamlı bir artış saptandı.Sonuç: İnterobserver and intraobserver variabilite çalışmamızın limitasyonu olmasına rağmen, I-131 tedavisinin NG hastalarında KA’in IMT’sini etkileyebileceği öngörülmüştür. NG hastalarında I-131’in KA’in IMT’ye etkisi Graves hastalarından daha yüksekti. I-131 KA’e etkisi uygulanan doz ve komşuluk nedeniyle olabilir. Çalışmamızdaki ilginç nokta ise FA’deki IMT artışı oldu. Bu artışın dolaşımdaki radyoaktif iyotun sekonder sistemik bir etkisi olabileceği düşünüldü. FA’da I-131’in etkisi NG hastalarında Graves hastalarından daha fazlaydı. Bu etkinin I-131 uptake’inin NG hastalarında daha düşük olması ve dolayısıyla, sistemik dolaşımdaki I-131 daha yüksek olmasına sekonder olabileceği düşünüldü.

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Cite This Article

SÜRÜCÜ, E., BEKİŞ, R., ŞENGÖZ, T., DEMİR, Y., ÇELİK, A. O., ORBAY, Ö., BİRLİK, B., ÖZDOĞAN, Ö., İĞCİ, E., DURAK, H. (2013). Radyoaktif İyotun Karotis İntima Media Duvar Kalınlığına Etkisi. Molecular Imaging and Radionuclide Therapy, Cilt: 22 - Sayı: 3, 85–89. https://ajindex.com/articles/295168

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