Journals / Journal of Surgery and Medicine / 2019 / Cilt: 3 - Sayı: 7

Increased signal intensity in the unenhanced T1-weighted magnetic resonance in the brain after repeated administrations of a macrocyclic-ionic gadolinium-based contrast agent

Makrosiklik-iyonik gadolinyum-bazlı kontrast ajan ile tekrarlanan uygulamalar ile T1 ağırlıklı kontrastsız manyetik rezonans görüntülemedeki sinyal intensite artışı

Pages
507–511
Publication Date
2019-07-29
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

There was a weak positive correlation between MRI intervals and in P/CSF ratio (P=0.037).Conclusion: Our study suggested an increase in the first and the last MRI in DN, P, GP and T SIs related to the number and intervals of repeated examinations of a brain MRI with gadoterate meglumine among patients with lung cancer.

📌 3 Key Takeaways

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Objective & Hypothesis:Aim: Gadoterate meglumine is a macrocyclic-ionic gadolinium-based contrast agent (GBCA) which is using in the magnetic resonance imaging (MRI).
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Key Findings & Data:This study aims to determine the relationship between the signal intensity (SI) increase in the dentate nucleus (DN), pons (P), globus pallidus (GP), thalamus (T) and use gadoterate meglumine by repeated brain MRI in lung cancer patients.Methods: The study was designed as a retrospective cohort study.
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Conclusion & Impact:There was a weak positive correlation between MRI intervals and in P/CSF ratio (P=0.037).Conclusion: Our study suggested an increase in the first and the last MRI in DN, P, GP and T SIs related to the number and intervals of repeated examinations of a brain MRI with gadoterate meglumine among patients with lung cancer.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Gadoterat meglumin · Beyin · Manyetik rezonans inceleme

Abstract

Aim: Gadoterate meglumine is a macrocyclic-ionic gadolinium-based contrast agent (GBCA) which is using in the magnetic resonance imaging (MRI). This study aims to determine the relationship between the signal intensity (SI) increase in the dentate nucleus (DN), pons (P), globus pallidus (GP), thalamus (T) and use gadoterate meglumine by repeated brain MRI in lung cancer patients.Methods: The study was designed as a retrospective cohort study. The mean SIs of the DN, P, GP, and T and the cerebrospinal fluid (CSF) were measured in the unenhanced T1-weighted (T1w) images of the first and last MRIs of patients who underwent at least three brain MRI examinations with gadoterate meglumine. DN, P, GP, T SIs were divided by values obtained from CSF to standardize the SI measurements. The DN, P, GP, T SIs and DN/CSF, P/CSF, GP/CSF, T/CSF ratios were compared the first and the last MRI examinations.Results: Our study revealed significant increases in DN, P, GP, and T SIs (P<0.001, P<0.001, P<0.001 and P=0.024,respectively). DN/CSF, P/CSF, GP/CSF, and T/CSF ratios were also significantly increased (P<0.001, P<0.001, P<0.001 and P=0.022, respectively). The number of examinations had a moderately strong positive correlation with in the DN/CSF ratio and a strong positive correlation with in P/CSF ratio (P<0.001 and P<0.001, respectively). There was a weak positive correlation between MRI intervals and in P/CSF ratio (P=0.037).Conclusion: Our study suggested an increase in the first and the last MRI in DN, P, GP and T SIs related to the number and intervals of repeated examinations of a brain MRI with gadoterate meglumine among patients with lung cancer.

Özet

Amaç: Manyetik rezonans görüntülemede (MRG) kullanılan makrosiklik-iyonik gadolinium- bazlı kontrast (GBKA) ajandır. Bu çalışmanın amacı gadoterat meglumin ile tekrarlıyan beyin MRG yapılmış akciğer kanserli hastalardaki dentat nucleus (DN), pons (P), globus pallidus (GP), talamusdaki (T) sinyal intensite (Sİ) artımı ile ilişkisini belirlemektir.Yöntemler: Çalışma retrospektif kohort çalışması olarak tasarlanmıştır. Gadoterat meglumin ile en az üç ve daha fazla beyin MRG incelemesi yapılmış hastaların ilk ve son kontrastsız T1 ağırlıklı MRG incelemelerindeki DN, P, GP, T ve beyin omurilik sıvısındaki (BOS) ortalama Sİ’leri ölçüldü. DN, P, GP, T Sİ değerleri, Sİ ölçümlerini standartlaştırmak için BOS'dan elde edilen değerlere bölündü. DN, P, GP, T Sİ’leri ve DN/BOS, P/BOS, GP/BOS, T/BOS oranları ilk ve son MRG incelemelerinde karşılaştırıldı.Bulgular: Çalışmamızda DN, P, GP ve T’ Sİ’lerinde anlamlı şekilde artış saptandı (sırası ile P<0,001, P<0,001, P<0,001 ve P=0,024). DN/BOS, P/BOS, GP/BOS, T/BOS oranlarının anlamlı şekilde arttığı tespit edildi (sırası ile P<0,001, P<0,001, P<0,001 ve P=0,022). Çekim sayısının; DN/BOS oranı ile arasında orta düzeyde; P/BOS oranı ile arasında yüksek düzeyde pozitif yönlü korelasyon saptandı (sırası ile P<0,001 ve P<0,001). MRG çekim aralıkları ve P/BOS oranı ile arasında hafif düzeyde pozitif yönlü korelasyon mevcuttu (P=0,037).Sonuç: Çalışmamızda akciğer kanserli hastalarda gadoterat meglumin ile tekrarlayan beyin MRG çekimlerinde, çekim sayısı ve aralıkları ile ilişkili olarak DN, P, GP ve T Sİ’lerinde ilk ve son MRG’ler arasında bir artış olduğu gösterilmiştir.

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Cite This Article

KAVAK, R. P., ÖZDEMİR, M. (2019). Increased signal intensity in the unenhanced T1-weighted magnetic resonance in the brain after repeated administrations of a macrocyclic-ionic gadolinium-based contrast agent. Journal of Surgery and Medicine, Cilt: 3 - Sayı: 7, 507–511. https://ajindex.com/articles/780538

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References (10)

  1. Choi JW, Moon WJ. Gadolinium Deposition in the Brain: Current Updates. Korean J Radiol. 2019;20(1):134-47. doi: 10.3348/kjr.2018.0356
  2. Guo BJ, Yang ZL, Zhang LJ. Gadolinium Deposition in Brain: Current Scientific Evidence and Future Perspectives. Front Mol Neurosci. 2018;20;11:335. doi: 10.3389/fnmol.2018.00335
  3. Kanda T, Ishii K, Kawaguchi H, Kitajima K, Takenaka D. High signal intensity in the dentate nucleus and globus pallidus on unenhanced T1-weighted MR images: relationship with increasing cumulative dose of a gadolinium-based contrast material. Radiology. 2014;270(3):834–41. doi: 10.1148/radiol.13131669
  4. Ramalho J, Semelka RC, AlObaidy M, Ramalho M, Nunes RH, Castillo M. Signal intensity change on unenhanced T1-weighted images in dentate nucleus following gadobenate dimeglumine in patients with and without previous multiple administrations of gadodiamide. Eur Radiol. 2016;26:4080-88. doi: 10.1007/s00330-016-4269-7
  5. Flood TF, Stence NV, Maloney JA, Mirsky DM. Pediatric brain: repeated exposure to linear gadolinium-based contrast material is associated with increased signal intensity at unenhanced T1-weighted MR imaging. Radiology. 2017;282:222-28. doi: 10.1148/radiol.2016160356
  6. Kuno H, Jara H, Buch K, Qureshi MM, Chapman MN, Sakai O. Global and regional brain assessment with quantitative MR imaging in patients with prior exposure to linear gadolinium based contrast agents. Radiology. 2017;283:195-204. doi: 10.1148/radiol.2016160674
  7. Zhang Y, Cao Y, Shih GL, Hecht EM, Prince MR. Extent of signal hyperintensity on unenhanced T1-weighted brain MR images after more than 35 administrations of linear gadolinium-based contrast agents. Radiology. 2017;282:516-25. doi: 10.1148/radiol.2016152864
  8. Stojanov DA, Aracki-Trenkic A, Vojinovic S, Benedetto-Stojanov D, Ljubisavljevic S. Increasing signal intensity within the dentate nucleus and globus pallidus on unenhanced T1W magnetic resonance images in patients with relapsing-remitting multiple sclerosis: correlation with cumulative dose of a macrocyclic gadolinium-based contrast agent, gadobutrol. Eur Radiol. 2016;26(3):807-15. doi: 10.1007/s00330-015-3879-9
  9. Kang KM, Choi SH, Hwang M, Yun TJ, Kim JH, Sohn CH. T1 shortening in the globus pallidus after multiple administrations of gadobutrol: assessment with a multidynamic multiecho sequence. Radiology. 2018;287(1):258-266. doi: 10.1148/radiol.2017162852
  10. Rossi Espagnet MC, Bernardi B, Pasquini L, Figà-Talamanca L, Tomà P, Napolitano