Peripheral arterial occlusive disease: role of MR angiography

Gozzi, M.; Amorico, M. G.; Colopi, Stefano; Favali, Marco; Gallo, E.; Torricelli, Pietro; Polverini, I.; Gargiulo, Mauro

doi:10.1007/s11547-006-0023-4

Cited by 13 publications

(6 citation statements)

References 12 publications

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“…Several studies have proven the equivalent diagnostic accuracy of contrast-enhanced MRA to DSA in the depiction and diagnosis of significant stenosis and occlusions in the lower extremity arteries. 1,2 The recognition of nephrogenic systemic fibrosis (NSF) a few years ago has implicated that patients with renal failure should be examined more strictly because Gd plays a triggering role for the development of NSF. 3,4 Recent studies have investigated various imaging techniques applicable for the nonenhanced depiction of the lower extremity vessels, demonstrating feasibility and diagnostic potential.…”

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confidence: 99%

Nonenhanced Magnetic Resonance Angiography of the Lower Extremity Vessels at 7 Tesla

Fischer

Maderwald²,

Orzada³

et al. 2013

Investigative Radiology

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The results of our study demonstrate the feasibility of non-contrast-agent-enhanced MRA of the lower extremity vessels at 7 T. Nonenhanced MRA of the lower extremities at this very high magnetic field can be considered to be in an early but promising stage. Further sequence optimization and the examination of a larger number of participants as well as comparison with contrast-enhanced MRA and nonenhanced techniques at lower field strengths should be pursued in future trials.

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mentioning

confidence: 99%

Nonenhanced Magnetic Resonance Angiography of the Lower Extremity Vessels at 7 Tesla

Fischer

Maderwald²,

Orzada³

et al. 2013

Investigative Radiology

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“…Myazakit et al present a non-contrastenhanced 3D ECG-triggered half-Fourier fast spin echo MRA technique for the thorax and abdomen, reporting shorter acquisition times compared with TOF and phasecontrast techniques with a large FOV [15]. Gozzi et al, for instance, conclude that TOF imaging allows precise evaluation of the degree of stenosis or occlusion in patients with PAOD [4].…”

Section: Study Design and Limitationsmentioning

confidence: 99%

Non-invasive ECG-triggered 2D TOF MR angiography of the pelvic and leg arteries in an open 1.0-tesla high-field MRI system in comparison to conventional DSA

Suttmeyer

Teichgräber

Thomas

et al. 2014

Biomedizinische Technik/Biomedical Engineering

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“…Since the recent introduction of 3 tesla (T) magnetic resonance (MR) scanners and the application of threedimensional (3D) gradient echo sequences, contrastenhanced magnetic resonance angiography (MRA) has become an accurate technique for the evaluation of most vascular structures [1][2][3]. Contrast-enhanced MRA is usually performed using gadolinium-based blood pool agents, and the spatial resolution of MR images can be improved owing to the T1 shortening effect [4,5].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Characteristics of New, Uniform, Extremely Small Iron-Based Nanoparticles as T1 Contrast Agents for MRI

Lee

Park

et al. 2021

Korean J Radiol

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Objective:The purpose of this study was to evaluate the magnetic resonance (MR) characteristics and applicability of new, uniform, extremely small iron-based nanoparticles (ESIONs) with 3-4-nm iron cores using contrast-enhanced magnetic resonance angiography (MRA). Materials and Methods: Seven types of ESIONs were used in phantom and animal experiments with 1.5T, 3T, and 4.7T scanners. The MR characteristics of the ESIONs were evaluated via phantom experiments. With the ESIONs selected by the phantom experiments, animal experiments were performed on eight rabbits. In the animal experiments, the in vivo kinetics and enhancement effect of the ESIONs were evaluated using half-diluted and non-diluted ESIONs. The between-group differences were assessed using a linear mixed model. A commercially available gadolinium-based contrast agent (GBCA) was used as a control. Results: All ESIONs showed a good T1 shortening effect and were applicable for MRA at 1.5T and 3T. The relaxivity ratio of the ESIONs increased with increasing magnetic field strength. In the animal experiments, the ESIONs showed peak signal intensity on the first-pass images and persistent vascular enhancement until 90 minutes. On the 1-week follow-up images, the ESIONs were nearly washed out from the vascular structures and organs. The peak signal intensity on the first-pass images showed no significant difference between the non-diluted ESIONs with 3-mm iron cores and GBCA (p = 1.000). On the 10-minutes post-contrast images, the non-diluted ESIONs showed a significantly higher signal intensity than did the GBCA (p < 0.001). Conclusion:In the phantom experiments, the ESIONs with 3-4-nm iron oxide cores showed a good T1 shortening effect at 1.5T and 3T. In the animal experiments, the ESIONs with 3-nm iron cores showed comparable enhancement on the first-pass images and superior enhancement effect on the delayed images compared to the commercially available GBCA at 3T.

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Peripheral arterial occlusive disease: role of MR angiography

Abstract: Total-body three-dimensional (3D) MRA allows a fast, safe, and accurate assessment of the arterial system in patients with arteriosclerosis and can be considered an alternative to DSA in the management of patients with steno-obstructive disease of the peripheral arteries.

Cited by 13 publications

References 12 publications

Nonenhanced Magnetic Resonance Angiography of the Lower Extremity Vessels at 7 Tesla

Nonenhanced Magnetic Resonance Angiography of the Lower Extremity Vessels at 7 Tesla

Non-invasive ECG-triggered 2D TOF MR angiography of the pelvic and leg arteries in an open 1.0-tesla high-field MRI system in comparison to conventional DSA

Investigation of the Characteristics of New, Uniform, Extremely Small Iron-Based Nanoparticles as T1 Contrast Agents for MRI

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