İskemik Kalp Hastalıklarında Kardiyak Manyetik Rezonans Görüntüleme
Özet
Bu bölümde, iskemik kalp hastalıklarının tanı ve değerlendirilmesinde Kardiyak Manyetik Rezonans Görüntüleme (MRG) yönteminin rolü ele alınmaktadır. İskemik kalp hastalığı, koroner arterlerdeki daralma veya tıkanıklık sonucu miyokardın yeterli oksijen alamamasıyla ortaya çıkar. Tanıda kullanılan yöntemler arasında SPECT, PET, CCTA ve FFR-CT yer alırken, Kardiyak MRG iyonize radyasyon içermemesi, yüksek uzaysal ve zamansal çözünürlüğüyle öne çıkar. MRG ile kalbin morfolojisi, fonksiyonu, miyokardiyal perfüzyon ve doku viabilitesi değerlendirilebilir. Duvar hareketleri Sine SSFP görüntülerle analiz edilirken, stunning ve hiberne miyokard gibi canlı ancak disfonksiyonel dokular ayırt edilebilir. Stres ve dinlenme perfüzyon görüntülemeleriyle iskemi ve infarkt ayrımı yapılır. Geç faz gadolinyum kontrastlanması (LGE) ile skar dokusu ve yayılımı belirlenir. T2 ağırlıklı görüntülerle akut- kronik infarkt ayrımı sağlanır. Kardiyak MRG, tek bir incelemeyle detaylı tanı ve tedavi planlaması sunarak iskemik kalp hastalıklarının yönetiminde etkili bir araçtır.
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