NÖRORADYOLOJİ PRATİĞİNDE SUSCEPTIBILITY WEIGHTED IMAGING (SWI) MRG SEKANS KULLANIM ALANLARI

Year 2018, Volume: 3 Issue: 3, 75 - 92, 06.12.2018

Türkan İkizceli Cemile Mutlu Değer

Abstract

Amaç: Susceptibility Weighted Imaging
(SWI) sekansı deoksihemoglobin, intrasellüler hemoglobin ve hemosiderin gibi
kan ürünleri ile demir ve kalsiyum gibi minerallerin manyetik duyarlılıklarını
kullanarak yüksek çözünürlüklü, üç boyutlu, magnifiye ve faz imajlardan ve
bunların kombinasyonundan oluşan gradient ağırlıklı yeni bir MR sekansıdır. SWI
sekansının nöroradyoloji pratiğinde kullanılabilirliği ve lezyon saptamadaki
duyarlılığının ortaya konması amaçlandı.

Materyal ve Metod: Nisan 2010-Mayıs
2011 tarihleri arasında 1-87 yaşları arasında 70 hasta (40 erkek, 30 kadın)
incelemeye dâhil edildi. Tüm olgulara 1,5 T MR cihazı ile rutin konvansiyonel
MRG incelemesine SWI sekansı dahil edildi. SWI sekansının lezyon tesbit
etmedeki duyarlılığı hesaplandı.

Bulgular: Çalışmamızda 18
hastada iskemik serebral enfarkt, 7 hastada nontravmatik, 7 hastada travmatik
kanama, 10 hastada vasküler malformasyon, 21 hastada intrakranial kitle, 7
hastada nörodejeneratif hastalığa bağlı serebral minereal birikimi. SWI sekansı
konvansiyonel sekanslarla karşılaştırıldığında mikro-makro kanamaların, venöz
malformasyonların ve mineral birikiminin belirginliğini ve görünürlüğünü
artırmaktadır.

Sonuç: SWI sekansı, mikro ve makro kanama, lezyon içine
kanamaları göstermede, kranial kitlelerin sınırlarının daha doğru tespitinde,
serebral enfarktlar da hemorajik evreyi sapatamada, hücre içi mineral birikimi
gibi birçok patolojinin saptanmasında, duyarlı yeni bir MR görüntüleme
sekansıdır.

Keywords

Manyetik Rezonans Görüntüleme; Serebral; Lezyon

References

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