The comparison of the efficacy of the single shot spin echo, fiesta, and propeller T 2 - weighted MRI sequences in the detection of focal liver lesions

Year 2021, Volume: 46 Issue: 3, 1033 - 1039, 30.09.2021

Mehmet Akın Cengiz Yılmaz , Bozkurt Gülek , Ömer Kaya , Okan Dılek , Gökhan Söker

https://doi.org/10.17826/cumj.908532

Abstract

Purpose: The purpose of this study is to compare the signal characteristics of liver lesions and the difference between interpreters in magnetic resonance imaging (MRI) T2-PROPELLER, T2-FIESTA, and T2-SSFSE sequences.
Materials and Methods: This study was performed with upper abdominal MR images examined between January 2014-July 2016 at Adana Numune Training and Research Hospital were included in the study. Liver lesions with a diameter of 5 mm or more were taken into consideration, there was no upper limit on lesion size. Up to 4 lesions were evaluated in patients with more than one liver lesion. Focal liver lesions were categorized into 5 groups according to signal properties. The interpreters blindly evaluated the sequences, without priorly knowing if the patients had liver lesions or not.
Results: 301 lesions were included in the study. 63 (36%) of the patients were males, while 110 (64%) were females. The ages of the patients varied between 19 and 90 years. 40 (13.3%) of the lesions were malignant, while 261 (86.7%) were benign. Of the 301 lesions, 148 (49.2%) were hemangiomas, 90 (29.9%) were cysts, and 32 (10.6%) were metastases. In comparison of signal characteristics of lesions, the intraclass correlation coefficient of the repeated measurement analysis was found to be 0.962.
Conclusion: There was no significant difference in characterizing the signal characteristic of the lesions between the sequences.

Keywords

Liver lesions, MRI, T2W, PROPELLER, FIESTA, SSFSE

Fokal karaciğer lezyonlarının saptanmasında single shot fast spin echo, Fiesta ve Propeller T2A MR sekanslarının etkinliklerinin karşılaştırılması

Abstract

Amaç: Bu çalışmanın amacı, karaciğer lezyonlarının manyetik rezonans görüntüleme (MRG) T2-PROPELLER, T2-FIESTA ve T2-SSFSE sekanslarında sinyal özelliklerinin ve değerlendiriciler arasındaki farkın karşılaştırılmasıdır.
Gereç ve Yöntem: Bu çalışma, Adana Numune Eğitim ve Araştırma Hastanesinde Ocak 2014-Temmuz 2016 tarihleri arasında çekimi yapılmış üst abdomen MR görüntüleriyle yapılmıştır. 5 mm ve daha büyük karaciğer lezyonları değerlendirilmiş, lezyon boyutunda üst sınır belirlenmemiştir. Birden fazla karaciğer lezyonu olan hastalarda en fazla 4 lezyon değerlendirmeye alınmıştır. Karaciğer fokal lezyonları sinyal özelliklerine göre 5 kategoride sınıflandırılmıştır. Değerlendiriciler, hastaların karaciğer lezyonu olup olmadığından habersiz olarak sekansları incelemiştir.
Bulgular: Çalışmaya 301 lezyon dahil edildi. Hastaların 63’ü (%36) erkek, 110’u (%64) kadındı. Hastaların yaşları 19 ile 90 yıl arasında değişmekteydi. Lezyonların 40’ı (%13,3) malign ve 261’i (%86,7) benign lezyonlardı. 301 lezyondan 148’i (%49,2) hemanjiom, 90’ı (%29,9) kist ve 32’si (%10,6) metastaz olarak saptandı. Lezyonların sinyal özelliklerinin karşılaştırılmasında, tekrarlı ölçümler analizinde sınıf içi korelasyon katsayısı 0,962 olarak bulundu.
Sonuç: Sekanslar arasında lezyonların sinyal özelliğini karakterize etmede anlamlı fark saptanmamıştır.

Keywords

Karaciğer lezyonları, MRG, T2A, PROPELLER, FIESTA, SSFSE

References

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