Magnetic Resonance Angiography in Infrapopliteal Arterial Disease

Diehm, Nicolas; Kickuth, Ralph; Baumgartner, Iris; Srivastav, Sudesh; Gretener, Silvia B.; Husmann, Marc; Jaccard, Yves; Do, Do Dai; Triller, J; Bonél, Harald

doi:10.1097/01.rli.0000262581.52315.ef

Cited by 33 publications

(4 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As portrayed in Fig. , the performance has improved due to many techniques previously identified in this work . Acquisition parameters for a number of these recent reports are listed in Table , and performance noted in Fig.…”

Section: Applicationsmentioning

confidence: 84%

Recent advances in 3D time-resolved contrast-enhanced MR angiography

Riederer

Haider

Borisch

et al. 2015

J. Magn. Reson. Imaging

View full text Add to dashboard Cite

Contrast-enhanced MR angiography (CE-MRA) was first introduced for clinical studies approximately 20 years ago. Early work provided 3 to 4 mm spatial resolution with acquisition times in the 30 sec range. Since that time there has been continuing effort to provide improved spatial resolution with reduced acquisition time, allowing high resolution three-dimensional (3D) time-resolved studies. The purpose of this work is to describe how this has been accomplished. Specific technical enablers have been: improved gradients allowing reduced repetition times, improved k-space sampling and reconstruction methods, parallel acquisition particularly in two directions, and improved and higher count receiver coil arrays. These have collectively made high resolution time-resolved studies readily available for many anatomic regions. Depending on the application, approximate 1 mm isotropic resolution is now possible with frame times of several seconds. Clinical applications of time-resolved CE-MRA are briefly reviewed.

show abstract

Section: Applicationsmentioning

confidence: 84%

Recent advances in 3D time-resolved contrast-enhanced MR angiography

Riederer

Haider

Borisch

et al. 2015

J. Magn. Reson. Imaging

View full text Add to dashboard Cite

show abstract

“…Previous research has shown that MRA gives a correct assessment of arterial infrapopliteal lesions compared with the reference method, DSA [6,7]. The diagnostic properties that were previously compared have been restricted to lesion detection, image quality and signal-to-noise ratio.…”

Section: Discussionmentioning

confidence: 99%

“…In many centers, CTA is the preferred modality for studying lower-limb vessels, because of its non-invasiveness and accuracy but probably mainly due to its high availability [5]. MRA has the advantage of no radiation exposure and also enables the visualization of peripheral arteries with high accuracy [6,7]. Most clinical MRA protocols for the lower extremity are contrast-enhanced with gadolinium-based contrast agents, even if time-of-flight and phase-contrast techniques have also been described.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Magnetic Resonance Angiography and Digital Subtraction Angiography for the Assessment of Infrapopliteal Arterial Occlusive Lesions, Based on the TASC II Classification Criteria

et al. 2020

View full text Add to dashboard Cite

This paper aimed to study the agreement and repeatability, both intra- and interobserver, of infrapopliteal lesion assessment with magnetic resonance angiography (MRA), using the TransAtlantic Inter-Society Consensus (TASC) II criteria, with perioperative digital subtraction angiography (DSA) as a reference. Sixty-eight patients with an MRA preceding an endovascular infrapopliteal revascularization were included. Preoperative MRAs and perioperative DSAs were evaluated in random order by three independent observers using the TASC II classification. The results were analyzed using visual grading characteristics (VGC) analysis and Krippendorff’s α. No systematic difference was found between modalities: area under the VGC curve (AUCVGC) = 0.48 (p = 0.58) or intraobserver; AUCVGC for Observer 1 and 2 respectively, 0.49 (p = 0.85) and 0.53 (p = 0.52) for MRA compared with 0.54 (p = 0.30) and 0.49 (p = 0.81) for DSA. Interobserver differences were seen: AUCVGC of 0.63 (p < 0.01) for DSA and 0.80 (p < 0.01) for MRA. These results were confirmed using Krippendorff’s α for the three observers showing 0.13 (95% confidence interval (CI) −0.07–0.31) for MRA and 0.39 (95% CI 0.23–0.53) for DSA. Poor interobserver agreement was also found in the choice of a target vessel on preoperative MRA: Krippendorff’s α = 0.19 (95% CI 0.01‒0.36). In conclusion, infrapopliteal lesions can be reliably determined on preoperative MRA, but interobserver variability regarding the choice of a target vessel is a major concern that appears to affect the overall TASC II grade.

show abstract

“…All participants were scanned using the 1.5T machine at baseline and 6 months, and 70 % of participants were scanned at 3T at the final 3 years follow-up. While this could potentially account for some of the temporal changes observed, previous studies have reported no significant differences in stenosis assessment between the two field strengths [ 26 ]. In addition there were no differences in progression rates between those scanned at 1.5T at all visits and those scanned at 3T at follow-up.…”

Section: Discussionmentioning

confidence: 99%

Follow-up of atheroma burden with sequential whole body contrast enhanced MR angiography: a feasibility study

Weir‐McCall

White

Ramkumar

et al. 2016

Int J Cardiovasc Imaging

View full text Add to dashboard Cite

Assess the feasibility of whole body magnetic resonance angiography (WB-MRA) for monitoring global atheroma burden in a population with peripheral arterial disease (PAD). 50 consecutive patients with symptomatic PAD referred for clinically indicated MRA were recruited. Whole body MRA (WB-MRA) was performed at baseline, 6 months and 3 years. The vasculature was split into 31 anatomical arterial segments. Each segment was scored according to degree of luminal narrowing: 0 = normal, 1 = <50 %, 2 = 50–70 %, 3 = 71–99 %, 4 = vessel occlusion. The score from all assessable segments was summed, and then normalised to the number of assessable vessels. This normalised score was divided by four (the maximum vessel score) and multiplied by 100 to give a final standardised atheroma score (SAS) with a score of 0–100. Progression was assessed with repeat measure ANOVA. 36 patients were scanned at 0 and 6 months, with 26 patients scanned at the 3 years follow up. Only those who completed all three visits were included in the final analysis. Baseline atherosclerotic burden was high with a mean SAS of 15.7 ± 10.3. No significant progression was present at 6 months (mean SAS 16.4 ± 10.5, p = 0.67), however there was significant disease progression at 3 years (mean SAS 17.7 ± 11.5, p = 0.01). Those with atheroma progression at follow-up were less likely to be on statin therapy (79 vs 100 %, p = 0.04), and had significantly higher baseline SAS (17.6 ± 11.2 vs 10.7 ± 5.1, p = 0.043). Follow up of atheroma burden is possible with WB-MRA, which can successfully quantify and monitor atherosclerosis progression at 3 years follow-up.

show abstract

Magnetic Resonance Angiography in Infrapopliteal Arterial Disease

Abstract: Despite marked improvement of SDNR, 3 T MRA does not yet provide a significantly higher accuracy in diagnostic imaging of atherosclerotic lesions below the knee joint as compared with 1.5 T MRA.

Cited by 33 publications

References 38 publications

Recent advances in 3D time-resolved contrast-enhanced MR angiography

Recent advances in 3D time-resolved contrast-enhanced MR angiography

Comparison of Magnetic Resonance Angiography and Digital Subtraction Angiography for the Assessment of Infrapopliteal Arterial Occlusive Lesions, Based on the TASC II Classification Criteria

Follow-up of atheroma burden with sequential whole body contrast enhanced MR angiography: a feasibility study

Contact Info

Product

Resources

About