Table 1.
Main findings of recent studies exploring the use of magnetic resonance angiography
| Ref. | Year | No. of Pt | Contrast | Criteria for artery stenosis | MRA findings | Reference and accuracy |
| Huber et al[28] | 2001 | 41 | Uncleara | > 0% as clinically significant | 23 significant artery stenosis, 2 vein complications, 4 perfusion defects of the parenchyma | DSA; Se: 100%; Sp: 93%-97% |
| Gufler et al[33] | 2008 | 63 | Gd-DTPA | < 50%: mild; | Artery stenosis: 29 mild, 3 moderate, and 1 severe | DSA for severe stenosis, one overestimati-on |
| 50%-70%:moderate; | ||||||
| > 70%:severe | ||||||
| Lanzman et al[34] | 2009 | 20 | None (SSFP) | ≥ 50% as clinically significant | 6 significant artery stenosis | DSA; Se: 100%; Sp: 88% |
| Liu et al[30] | 2009 | 13 | None (SSFP) | ≥ 50% as clinically significant | 1 significant artery stenosis | Stenosis confirmed by DSA |
| Ismaeel et al[31] | 2011 | 30 | Uncleara | ≥ 50% as clinically significant | 15 significant artery stenosis | DSA; Se: 93.7%; Sp: 80% |
| Bashir et al[32] | 2013 | 16 | Ferumoxytol | Unclear | 2 moderate to severe stenosis, 1 occlusion | Stenosis and occlusion confirmed by DSA |
| Hwang et al[1] | 2013 | 144 | Gadobutrol | < 50%: mild; | Artery stenosis: 10 mild, 5 moderate, and 8 severe; 17 renal | Severe stenosis confirmed by DSA |
| 50%-70%: moderate; | parenchymal infarctions | |||||
| > 70%: severe | ||||||
| Tang et al[29] | 2014 | 75 | None (SLEEK) | ≥ 50% as clinically significant | 14 artery stenosis (10 significant), other complications such as arteriovenous fistulas and pseudoaneurysms | Significant stenosis: DSA; positive predictive value: 91% |
a
With contrast, but unclear about the specific name. Pt: Patients; SSFP: Steady-state free precession; SLEEK: Spatial labeling with multiple inversion pulses; DSA: Digital subtraction angiography; Se: Sensitivity; Sp: Specificity; MRA: Magnetic resonance angiography.