Dergi Ara >>
Yıl:2003; Cilt: 4; Sayı: 1>> Özet
Türkiye Klinikleri Psikiyatri Dergisi; 2003;4(1):6-12
Radyonüklid görüntülemede temel prensipler: C. SPECT Görüntüleme
LÖ Kapucu, ÜÖ Akdemir
Gazi Üniversitesi Tıp Fakültesi Nükleer Tıp AD, ANKARA
SPECT tetkikinin, planar ve tüm vücut tarama gibi diğer geleneksel sintigrafik görüntüleme biçimlerinden temel farkı tomografik bir görüntüleme yöntemi olmasıdır. Tomografik görüntüleme, insan bedeninin ya da özel bir organın iki-boyutlu kesitsel görüntülerinin elde edilmesidir. Beyin SPECT tetkiki, iki-boyutlu kesitsel görüntüler ile, beyin dokusunun kanlanması (perfüzyonu) ve metabolizması hakkında bilgi sunan bir görüntüleme yöntemidir. SPECT için, tek foton yayılımı yapan Xe-133 veya I-123 ve Tc-99m ile işaretlenmiş radyofarmasötikler kullanılır . En sık beyin perfüzyon SPECT uygulamaları yapılmaktadır. Ayrıca kolinerjik, dopaminerjik, serotonerjik ve opioiderjik yolaklar ile çalışmak için I-123 ile işaretlenmiş radyofarmasötiklerle yapılan SPECT uygulamaları da mevcuttur.

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