<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Correcting versus resolving respiratory motion in free-breathing whole-heart MRA: a comparison in patients with thoracic aortic disease"^^ . "Background: Whole-heart magnetic resonance angiography (MRA) requires sophisticated methods accounting for respiratory motion. Our purpose was to evaluate the image quality of compressed sensing-based respiratory motion-resolved three-dimensional (3D) whole-heart MRA compared with self-navigated motion-corrected whole-heart MRA in patients with known thoracic aorta dilation.\r\n\r\nMethods: Twenty-five patients were prospectively enrolled in this ethically approved study. Whole-heart 1.5-T MRA was acquired using a prototype 3D radial steady-state free-precession free-breathing sequence. The same data were reconstructed with a one-dimensional motion-correction algorithm (1D-MCA) and an extradimensional golden-angle radial sparse parallel reconstruction (XD-GRASP). Subjective image quality was scored and objective image quality was quantified (signal intensity ratio, SIR; vessel sharpness). Wilcoxon, McNemar, and paired t tests were used.\r\n\r\nResults: Subjective image quality was significantly higher using XD-GRASP compared to 1D-MCA (median 4.5, interquartile range 4.5–5.0 versus 4.0 [2.25–4.75]; p < 0.001), as well as signal homogeneity (3.0 [3.0–3.0] versus 2.0 [2.0–3.0]; p = 0.003), and image sharpness (3.0 [2.0–3.0] vs 2.0 [1.25–3.0]; p < 0.001). SIR with the 1D-MCA and XD-GRASP was 6.1 ± 3.9 versus 7.4 ± 2.5, respectively (p < 0.001); while signal homogeneity was 274.2 ± 265.0 versus 199.8 ± 67.2 (p = 0.129). XD-GRASP provided a higher vessel sharpness (45.3 ± 10.7 versus 40.6 ± 101, p = 0.025).\r\n\r\nConclusions: XD-GRASP-based motion-resolved reconstruction of free-breathing 3D whole-heart MRA datasets provides improved image contrast, sharpness, and signal homogeneity and seems to be a promising technique that overcomes some of the limitations of motion correction or respiratory navigator gating."^^ . "2019" . . "3" . "29" . . "Springer International Publishing"^^ . . . "European Radiology Experimental"^^ . . . "25099280" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Jonathan D."^^ . "Rollins"^^ . "Jonathan D. Rollins"^^ . . "Akos"^^ . "Varga-Szemes"^^ . "Akos Varga-Szemes"^^ . . "Davide"^^ . "Piccini"^^ . "Davide Piccini"^^ . . "Pal"^^ . "Suranyi"^^ . "Pal Suranyi"^^ . . "Andreas M."^^ . "Fischer"^^ . "Andreas M. Fischer"^^ . . "John"^^ . "Heerfordt"^^ . "John Heerfordt"^^ . . "Jérôme"^^ . "Yerly"^^ . "Jérôme Yerly"^^ . . "U. Joseph"^^ . "Schoepf"^^ . "U. Joseph Schoepf"^^ . . "Robert E."^^ . "Stroud"^^ . "Robert E. Stroud"^^ . . "Lorenzo"^^ . "Di Sopra"^^ . "Lorenzo Di Sopra"^^ . . . . . . "Correcting versus resolving respiratory motion in free-breathing whole-heart MRA: a comparison in patients with thoracic aortic disease (PDF)"^^ . . . "41747_2019_Article_107.pdf"^^ . . . "Correcting versus resolving respiratory motion in free-breathing whole-heart MRA: a comparison in patients with thoracic aortic disease (Other)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #26941 \n\nCorrecting versus resolving respiratory motion in free-breathing whole-heart MRA: a comparison in patients with thoracic aortic disease\n\n" . "text/html" . . . "610 Medizin"@de . "610 Medical sciences Medicine"@en . .