3D FIESTA pulse sequence for assessing renal artery stenosis: is it a reliable application in unenhanced magnetic resonance angiography?

Gaudiano, Caterina; Busato, F.; Ferramosca, Emiliana; Cecchelli, Carlo; Corcioni, Beniamino; Sanctis, L. B. De; Santoro, Antonio; Golfieri, Rita

doi:10.1007/s00330-014-3330-7

Cited by 9 publications

(5 citation statements)

References 24 publications

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“…5,6 MRA of the renal arteries may be performed with or without the use of gadolinium-based contrast agents (GBCAs). Although new techniques for performing unenhanced MRA of the renal arteries are under investigation, particularly the use of balanced steady-state free-precession MRA, [7][8][9] unenhanced MRA of the renal arteries has historically been performed using a 2D time-of-flight (ToF) technique, which can detect very slow flow. Contrast-enhanced (CE)-MRA improves structural delineation of vessel segments, thereby improving the overall performance of the MRI.…”

mentioning

confidence: 99%

Efficacy and safety of gadobutrol‐enhanced MRA of the renal arteries: Results from GRAMS (Gadobutrol‐enhanced renal artery MRA study), a prospective, intraindividual multicenter phase 3 blinded study

Fabrega‐Foster

Agarwal

Rastegar

et al. 2017

Magnetic Resonance Imaging

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mentioning

confidence: 99%

Efficacy and safety of gadobutrol‐enhanced MRA of the renal arteries: Results from GRAMS (Gadobutrol‐enhanced renal artery MRA study), a prospective, intraindividual multicenter phase 3 blinded study

Fabrega‐Foster

Agarwal

Rastegar

et al. 2017

Magnetic Resonance Imaging

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“…Recent studies have shown comparable results between U-MRA and CE-MRA, CTA and DSA in both healthy volunteers and patients with renal artery stenosis. These studies are summarized in Table 4 [16] , [17] , [18] , [19] , [20] , [21] , [22] , [23] , [24] ( Fig. 2 , Fig.…”

Section: Discussionmentioning

confidence: 99%

“…In the two cases, there were multiple areas of stenosis and dilatations in the main renal arteries, making correct evaluation of renal arteries more challenging even for the gold standard techniques. There are only two articles available where FMD is depicted using U-MRA [23] , [24] , [25] ( Fig. 4 ).…”

Section: Discussionmentioning

confidence: 99%

Accuracy of unenhanced magnetic resonance angiography for the assessment of renal artery stenosis

Sebastiá

Sotomayor

Paño

et al. 2016

European Journal of Radiology Open

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PurposeTo evaluate the accuracy of unenhanced magnetic resonance angiography (U-MRA) using balanced steady-state free precession (SSFP) sequences with inversion recovery (IR) pulses for the evaluation of renal artery stenosis.Materials and methodsU-MRA was performed in 24 patients with suspected main renal artery stenosis. Two radiologists evaluated the quality of the imaging studies and the ability of U-MRA to identify hemodynamically significant main renal artery stenosis (RAS) defined as a stenosis ≥50% when compared to gold standard tests: contrast-enhanced magnetic resonance angiography (CE-MRA) (18 patients) or digital subtraction arteriography (DSA) (6 patients).ResultsA total of 44 main renal arteries were evaluated. Of them, 32 renal arteries could be assessed with U-MRA. When CE-MRA or DSA was used as the reference standard, nine renal arteries had hemodynamically significant RAS. U-MRA correctly identified eight out of nine arteries as having ≥50% RAS, and correctly identified 22 out of 23 arteries as not having significant RAS, with a sensitivity of 88.8%, a specificity of 95.65%, positive and negative predictive value of 88.8% and 95.65%, respectively, and an accuracy of 93.75%. Renal artery fibromuscular dysplasia (FMD) was observed in the two misclassified arteries.ConclusionU-MRA is a reliable diagnostic method to depict normal and stenotic main renal arteries. U-MRA can be used as an alternative to contrast-enhanced magnetic resonance angiography or computer tomography angiography in patients with renal insufficiency unless FMD is suspected.

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“…The assessment of the renal arteries was carried out as reported in a previous study. 19 In their analysis, the readers noted the number of renal arteries on both sides; the arteries entering the renal hilum were considered as the main renal arteries. The presence or absence of accessory renal arteries were also assessed, and the same evaluation regarding the possible presence of stenosis was attempted.…”

Section: Image Analysismentioning

confidence: 99%

Diffusion tensor imaging in renal artery stenosis: a preliminary report

Gaudiano

Clementi

Corcioni

et al. 2020

BJR

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Objective: To investigate the diffusion properties in the kidneys affected by renal artery stenosis (RAS) using diffusion tensor imaging (DTI). Methods: In this prospective study, 35 patients with RAS and 15 patients without renal abnormalities were enrolled and examined using DTI. Cortical and medullary regions of interest (ROIs) were located to obtain the corresponding values of the apparent diffusion coefficient (ADC) and fractional anisotropy (FA). The cortical and medullary ADC and FA were compared in the kidney affected by variable degrees of stenosis (RAS 50–75% and >75%) vs controls, using the one-way ANOVA and Student’s t-test. The Spearman correlation test was used to correlate the mean ADC and FA values in the cortex and medulla with the estimate glomerular filtration rate (eGFR). Results: For the controls, the ADC value was significantly (p = 0.03) higher in the cortex than in the medulla; the FA value was significantly (p = 0.001) higher in the medulla than in the cortex. Compared with the controls, a significant reduction in the cortical ADC was present with a RAS of 50–75% and >75% (p = 0.001 and 0.041, respectively); a significant reduction in the medullary FA was verified only for RAS >75% (p = 0.023). The Spearman correlation test did not show a statistically significant correlation between the cortical and medullary ADC and FA, and the eGFR. Conclusion: The alterations of the diffusional parameters caused by RAS can be detected by DTI and could be useful in the diagnostic evaluation of these patients. Advances in knowledge: 1. Magnetic resonance DTI could provide useful information about renal involvement in RAS. 2. Magnetic resonance DTI allows non-invasive repeatable evaluation of the renal parenchyma, without contrast media.

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3D FIESTA pulse sequence for assessing renal artery stenosis: is it a reliable application in unenhanced magnetic resonance angiography?

Abstract: The 3D FIESTA sequence provides a robust evaluation of RAS. The 3D FIESTA sequence allows non-invasive evaluation of the renal arteries. The 3D FIESTA sequence could be a useful tool in evaluating RAS.

Cited by 9 publications

References 24 publications

Efficacy and safety of gadobutrol‐enhanced MRA of the renal arteries: Results from GRAMS (Gadobutrol‐enhanced renal artery MRA study), a prospective, intraindividual multicenter phase 3 blinded study

Efficacy and safety of gadobutrol‐enhanced MRA of the renal arteries: Results from GRAMS (Gadobutrol‐enhanced renal artery MRA study), a prospective, intraindividual multicenter phase 3 blinded study

Accuracy of unenhanced magnetic resonance angiography for the assessment of renal artery stenosis

Diffusion tensor imaging in renal artery stenosis: a preliminary report

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