Motion Compensation Strategies in Magnetic Resonance Imaging

Heeswijk, Ruud B. van; Bonanno, Gabriele; Coppo, Simone; Coristine, Andrew J.; Kober, Tobias; Stuber, Matthias

doi:10.1615/critrevbiomedeng.v40.i2.20

Cited by 55 publications

(63 citation statements)

References 119 publications

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“…Motion artifacts can be mitigated using breath-hold acquisition in cooperative subjects, or by navigator or breathing-belt triggering in the others [21]. Recently, Robson et al [22] showed that the combined use of techniques of background suppression (which use multiple RF inversion pulses to suppress signals from the static tissue) and breathing strategies improves the repeatability of perfusion measurements over the kidneys.…”

Section: Renal Asl Mri In Healthy Volunteersmentioning

confidence: 99%

Renal Arterial Spin Labeling Magnetic Resonance Imaging

Becker

Rossi²

2016

Nephron

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Arterial spin labeling (ASL) MRI allows the quantification of tissue perfusion without administration of exogenous contrast agents. Patients with reduced renal function or other contraindications to Gadolinium-based contrast media may benefit from the non-invasive monitoring of tissue microcirculation. So far, only few studies have investigated the sensitivity, the specificity and the reliability of the ASL techniques for the assessment of renal perfusion. Moreover, only little is known about the interplay between ASL markers of perfusion and functional renal filtration parameters. In this editorial, we discuss the main technical issues related to the quantification of renal perfusion by ASL and, in particular, the latest results in patients with kidney disorders.

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Section: Renal Asl Mri In Healthy Volunteersmentioning

confidence: 99%

Renal Arterial Spin Labeling Magnetic Resonance Imaging

Becker

Rossi²

2016

Nephron

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“…Self-gated MRI corrects motion artifacts based on MRI signal intensity variations (19). Despite being less sensitive to the earlier stages of lung inflammation, this technique has been proven to provide more accurate information in visualizing and quantifying the progression of lung fibrosis in BLM-treated mice (20).…”

Section: Proton Mrimentioning

confidence: 99%

Noninvasive Imaging of Experimental Lung Fibrosis

Zhou

Chen

Ambalavanan³

et al. 2015

Am J Respir Cell Mol Biol

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“…However, these approaches reduce data sampling efficiency and generally result in prolonged imaging times. To retain scan efficiency and still reduce the effects of respiratory motion artifacts without breath-holding, several groups [5] have explored rapid continuous free-breathing MRI radial acquisition schemes with compressed sensing reconstruction, for several types of MRI (including cardiac, as well as liver and brain MRI) [6–8]. However, those studies have primarily focused on providing a proof-of-concept demonstration of the feasibility of the proposed imaging strategy.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional XD-GRASP provides better image quality than conventional 2D cardiac cine MRI for patients who cannot suspend respiration

Piekarski

Chițiboi

Ramb

et al. 2017

Magn Reson Mater Phy

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Object Residual respiratory motion degrades image quality in conventional cardiac cine MRI (CCMR). We evaluated whether a free-breathing (FB) radial imaging CCMR sequence with compressed sensing reconstruction (eXtra-Dimension (e.g. cardiac and respiratory phases) Golden-angle RAdial Sparse Parallel, or XD-GRASP) could provide better image quality than a conventional Cartesian breath-held (BH) sequence, in an unselected population of patients undergoing clinical CCMR. Material and Methods 101 patients who underwent BH and FB imaging in a mid-ventricular short-axis plane at a matching location were included. Visual and quantitative image analysis was performed by two blinded experienced readers, using a 5-point qualitative scale to score overall image quality and visual signal-to-noise ratio (SNR) grade, with measures of noise and sharpness. End-diastole (ED) and end-systole (ES) left-ventricular areas were also measured and compared for both BH and FB images. Results Image quality was generally better with the BH cines (overall quality grade BH vs FB: 4 vs 2.9, p<0.001; noise 0.06 vs 0.08 p< 0.001; SNR grade: 4.1 vs 3, p<0.001), except for sharpness (p=0.48). There were no significant differences between BH and FB images regarding ED or ES areas (p=0.35 and 0.12). 18 of the 101 patients had impaired BH image quality (grades 1 or 2). In this subgroup, image quality of the FB images was better (p=0.0032), as was the SNR grade (p=0.003), but there were no significant differences regarding noise and sharpness (p=0.45, p=0.47). Conclusion Although FB XD-GRASP CCMR was visually inferior to conventional BH cardiac cine in general, it provided improved image quality in the subgroup of patients presenting respiratory motion-induced artifacts on breath-held images.

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Motion Compensation Strategies in Magnetic Resonance Imaging

Cited by 55 publications

References 119 publications

Renal Arterial Spin Labeling Magnetic Resonance Imaging

Renal Arterial Spin Labeling Magnetic Resonance Imaging

Noninvasive Imaging of Experimental Lung Fibrosis

Two-dimensional XD-GRASP provides better image quality than conventional 2D cardiac cine MRI for patients who cannot suspend respiration

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