Meltem ÖZDEMİR, Tahsin Rendan EDGÜER, Halil ÖZTÜRK, Emine ÖZTÜRK, Alper DİLLİ, Baki HEKİMOĞLU

Renovasküler hipertansiyon şüphesi olan hastalarda renal arterlerin görüntülenmesinde üç boyutlu kontrastlı manyetik rezonans anjiyografinin tanı değeri

Amaç: Çalışmamızın amacı, digital subtraction angiography (DSA) tekniğini referans metod alarak, üç boyutlu kontrastlı manyetik rezonans anjiyografi (3D CE-MRA) tekniğinin, renal arter stenozu (RAS) tanısındaki ve segmental ve aksesuar renal arter görüntülemesindeki değerini saptamak idi. Gereç ve Yöntem: Yirmi beş hastaya 3D CE-MRA ve DSA tetkikleri uygulandı. CE-MRA tekniğinin RAS tanısındaki sensitivite, spesifisite ve pozitif ve negatif kestirim değerleri ile tekniğin segmental ve aksesuar renal arter görüntülemedeki sensitivite değerleri hesaplandı. Bulgular: RAS tanısında CE-MRA tekniğinin sensitivite, spesifisite, pozitif ve negatif kestirim değerleri, aynı sıra ile; %100, %97,8, %87,5, ve %100 olarak hesaplandı. Tekniğin segmental ve aksesuar renal arter görüntülemedeki sensitivite değerlerinin, aynı sıra ile; %58 ve %91,7 olduğu saptandı. Sonuç: 3D CE-MRA tekniğinin, sadece renal arter stenozu tanısında değil, aksesuar arterlerin görüntülemesinde de güvenilir olduğu saptandı. Ancak çalışmamızın sonuçlarına göre, tekniğin segmental arter görüntülemesindeki değeri sınırlıdır.

Anahtar Kelimeler:

Renal MRA, manyetik rezonans anjiyografi, kontrastlı MRA

The diagnostic performance of three-dimensional contrast-enhanced magnetic resonance angiography in demonstrating renal vasculature in patients with suspected renovascular hypertension

Aim: The aim of our study was to evaluate the diagnostic value of three-dimensional contrast-enhanced magnetic resonance angiography (3D CE-MRA) in detecting renal artery stenosis (RAS), and in demonstrating segmental and accessory renal arteries in patients with suspected renovascular hypertension, taking digital subtraction angiography (DSA) as the reference method. Material and Method: Twenty five patients underwent 3D CE-MRA and DSA. Sensitivity, specificity, positive predictive value, and negative predictive value of CE-MRA in depicting RAS, and sensitivity of the technique in demonstrating segmental and accessory arteries were calculated. Results: For detecting RAS, the sensitivity, specificity, positive predictive value, and negative predictive value of 3D CE-MRA were; 100%, 97.8%, 87.5%, and 100%, respectively. The sencitivity of the technique in demonstrating segmental and accessory arteries were 58% and 91.7%, respectively. Conclusion: We found that 3D CE-MRA is a reliable technique in not only detecting RAS, but in demonstrating accessory arteries as well. However, according to our results, the value of the method in visualising segmental arteries is limited.

Keywords:

Renal MRA, magnetic resonance angiography, contrast-enhanced MRA,

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