Importance of through-plane heart motion correction for the assessment of aortic regurgitation severity using phase contrast magnetic resonance imaging

Lagerstrand, Kerstin M (author): Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för medicinsk strålningsvetenskap,Institute of Clinical Sciences, Department of Medical Radiation Sciences

Truedsson, Frida (author): Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för medicinsk strålningsvetenskap,Institute of Clinical Sciences, Department of Medical Radiation Sciences

Gao, Sinsia, 1966 (author): Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för molekylär och klinisk medicin,Institute of Medicine, Department of Molecular and Clinical Medicine

Johansson, A. (author)

Bech-Hanssen, Odd, 1956 (author): Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för molekylär och klinisk medicin,Institute of Medicine, Department of Molecular and Clinical Medicine

Polte, Christian Lars (author): Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för molekylär och klinisk medicin,Institute of Medicine, Department of Molecular and Clinical Medicine

Johnsson, Åse (Allansdotter), 1966 (author): Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för radiologi,Institute of Clinical Sciences, Department of Radiology

(creator_code:org_t)

Elsevier BV, 2021
2021
English.
In: Magnetic Resonance Imaging. - : Elsevier BV. - 0730-725X. ; 84, s. 69-75

Related links:: https://doi.org/10.1...; show more...; https://gup.ub.gu.se...; https://doi.org/10.1...; show less...

Abstract Subject headings

Purpose: To elucidate the influence of through-plane heart motion on the assessment of aortic regurgitation (AR) severity using phase contrast magnetic resonance imaging (PC-MRI). Approach: A patient cohort with chronic AR (n = 34) was examined with PC-MRI. The regurgitant volume (RVol) and fraction (RFrac) were extracted from the PC-MRI data before and after through-plane heart motion correction and was then used for assessment of AR severity. Results: The flow volume errors were strongly correlated to aortic diameter (R = 0.80, p < 0.001) with median (IQR 25%;75%): 16 (14; 17) ml for diameter>40mm, compared with 9 (7; 10) ml for normal aortic size (p < 0.001). RVol and RFrac were underestimated (uncorrected:64 +/- 37 ml and 39 +/- 17%; corrected:76 +/- 37 ml and 44 +/- 15%; p < 0.001) and similar to 20% of the patients received lower severity grade without correction. Conclusion: Through-plane heart motion introduces relevant flow volume errors, especially in patients with aortic dilatation that may result in underestimation of the severity grade in patients with chronic AR.

By the author/editor: Lagerstrand, Ker ...; Truedsson, Frida; Gao, Sinsia, 196 ...; Johansson, A.; Bech-Hanssen, Od ...; Polte, Christian ...; show more...; Johnsson, Åse (A ...; show less...

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