Unenhanced respiratory-navigated NATIVE® TrueFISP magnetic resonance angiography in the evaluation of renal arteries: Comparison with contrast-enhanced magnetic resonance angiography - 01/02/17
, M. Kara a, V. Kıdır b, S. İnal c, T. Sezer c, A. Umul a, H. Orhan d, A.O. Çelik a, H. Demirtaş a, Ö. Yilmaz a
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Abstract |
Purpose |
To compare unenhanced three-dimensional (3D) NATIVE® true fast imaging with steady-state precession (TrueFISP) magnetic resonance (MR) angiography with the more conventional MR angiography technique obtained after intravenous administration of a gadolinium chelate in the evaluation of renal arteries and their branches in patients with suspected renal artery stenosis.
Materials and methods |
A total of 39 patients (25 men, 14 women) with a mean age of 51.4±17.5years (SD) (range: 10–82years) were included in the study. All patients with suspected renal artery stenosis underwent unenhanced 3D NATIVE® TrueFISP MR angiography and contrast-enhanced MR angiography. The two MR angiography methods were compared by two independent readers for image quality using a four-point scale, diagnostic performance and grading of renal artery stenosis on a total of 78 renal arteries.
Results |
For both readers image quality of unenhanced 3D NATIVE® TrueFISP MR angiography (3.12 to 3.63) was greater than that of contrast-enhanced MR angiography (1.94 to 2.71) for renal artery ostium-trunk and the left renal artery segmental branches. The sensitivity of 3D NATIVE® TrueFISP MR angiography for the diagnosis of renal artery stenosis was 100% for both readers for the right renal artery and 66% and 80% for the left renal artery for reader 1 and reader 2, respectively. Agreement between 3D NATIVE® TrueFISP MR angiography and CE-MR angiography was 95% (74/78) for reader 1 and 92% (72/78) for reader 2.
Conclusion |
Unenhanced NATIVE® TrueFISP magnetic resonance angiography can play an additional role in the evaluation of renal arteries in patients with hypertension, especially in subjects at risk of nephrogenic systemic fibrosis.
El texto completo de este artículo está disponible en PDF.Keywords : MR angiography, MR imaging, Technique, Renal artery, Arterial hypertension
Abbreviations : RAS, CE-MRA, TOF, PC, SSFP, 3D, TrueFISP, TI, VR, MIP, FOV
Esquema
Vol 98 - N° 2
P. 133-140 - février 2017 Regresar al número
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