Santral Sinir Sistemi Tümörlerinin Görüntülenmesi

Çoğu santral sinir sistemi (SSS) tümörlerinin ve tümör olmayan lezyonların oldukçabenzer görünümler sergilemesinden dolayı rutin Manyetik Rezonans Görüntüleme(MRG) sekanslarının özgüllükleri bunları ayırmada yetersizdir. SSS tümörlerinin ayırıcıtanısında anahtar unsurlar, lezyonun lokalizasyonu (intra- veya extra-aksiyel, infraveyasupra-tentoriyal) ile birlikte hastanın yaşıdır. Multiparametrik MRG tekniklerini(Spektroskopi, Difüzyon Ağırlıklı Görüntüleme, Difüzyon Tensor Görüntüleme, PerfüzyonAğırlıklı Görüntüleme, Fonksiyonel MRG), tümörün mikroskobik ve fonksiyoneldavranışına ilişkin (hücresel yoğunluk, neo-vaskularizasyon, kapiller sızıntıve metabolitler gibi) bilgiler sunar. İleri multiparametrik görüntüleme teknikleri SSStümörü olan hastaların teşhisi, yönetimi ve takibinde kesin ve güvenilir invaziv olmayanbir yöntem sunar.

Imaging of Central Nervous System Tumors

Many Central Nerve System (CNS) tumors and even non–tumoral lesions may show a very similar imaging appearance; therefore, routine Magnetic Resonance Imaging (MRI) are lack of specificity to differentiate these lesions. The key points in the differential diagnosis of CNS tumors are the location of the lesion (intra- or extra-axial, infra- or extra-tentorial) and the age of the patient. Multiparametric MRI techniques (Spectroscopy, Diffusion Weighted Imaging, Diffusion Tensor Imaging, Perfusion Weighted Imaging, Functional MRI) reveal the information about the microscopic and functional behaviors of the tumor (cellular density, neo-vascularization, capillary leakage and metabolites, etc). Advanced multiparametric imaging tools support the diagnosis, management and follow-up of patients with CNS tumors as an accurate and reliable noninvasive technique.

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