ECG-triggered non-enhanced MR angiography of peripheral arteries in comparison to DSA in patients with peripheral artery occlusive disease

Abstract

NE-MRA revealed a relatively high number of inadequate quality segments. This is in line with recently published comparable studies of the similar SPACE NE-MRA techniques. Further advance of NE-MRA techniques remains desirable for patients with PAOD.

Highly accelerated subtractive femoral non‐contrast‐enhanced MRA using compressed sensing with k‐space subtraction, phase and intensity correction

“…Only femoral examinations in healthy volunteers were evaluated, which is a limitation of this study. Subtractive 3D FSE-based techniques have been demonstrated to have less stable and accurate performance in patients with arterial pathology in comparison with digital subtraction angiography, 45 CE-MRA, 46 and another NCE-MRA technique-quiescent interval slice selective. 47,48 Future work in patients will assess acceleration based on KSPIC and evaluate whether it can improve the diagnostic performance and/or reduce examination times.…”

Evaluation of velocity‐sensitized and acceleration‐sensitized NCE‐MRA for below‐knee peripheral arterial disease

“…Finally, CE‐MRA was used as the reference standard, in line with most published studies in the literature . It may be that digital subtraction angiography (DSA) is a more appropriate “gold standard” to compare with, although clearly there may be practical and ethical issues in performing such a comparison.…”

Noncontrast MR angiography: An update

“…In eight studies of the lower extremities (four of which were limited to the calf or foot) involving a total of 238 patients using either CEMRA (seven studies) or CTA (one study) as the reference standard exam, cardiac‐gated subtractive noncontrast MRA using a fast spin‐echo based readout provided a median sensitivity of ∼86%, and a median specificity of ∼86% for the detection of ≥50% stenosis (evidence level 1b) . However, three other studies involving a total of 75 patients have reported poor image quality and a high rate of nondiagnostic vessel segments …”