Defining the optimal temporal and spatial resolution for cardiovascular magnetic resonance imaging feature tracking

2021-05-17 | journal article; research paper. A publication with affiliation to the University of Göttingen.

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​Defining the optimal temporal and spatial resolution for cardiovascular magnetic resonance imaging feature tracking​
Metschies, G.; Billing, M.; Schmidt-Rimpler, J.; Kowallick, J. T.; Gertz, R. J.; Lapinskas, T. & Pieske-Kraigher, E. et al.​ (2021) 
Journal of Cardiovascular Magnetic Resonance23(1) art. 60​.​ DOI: https://doi.org/10.1186/s12968-021-00740-5 

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Authors
Metschies, Georg; Billing, Marcus; Schmidt-Rimpler, Jonas; Kowallick, Johannes T.; Gertz, Roman J.; Lapinskas, Tomas; Pieske-Kraigher, Elisabeth; Pieske, Burkert; Lotz, Joachim ; Bigalke, Boris; Kutty, Shelby; Hasenfuß, Gerd ; Kelle, Sebastian; Schuster, Andreas; Backhaus, Sören J.
Abstract
Abstract Background Myocardial deformation analyses using cardiovascular magnetic resonance (CMR) feature tracking (CMR-FT) have incremental value in the assessment of cardiac function beyond volumetric analyses. Since guidelines do not recommend specific imaging parameters, we aimed to define optimal spatial and temporal resolutions for CMR cine images to enable reliable post-processing. Methods Intra- and inter-observer reproducibility was assessed in 12 healthy subjects and 9 heart failure (HF) patients. Cine images were acquired with different temporal (20, 30, 40 and 50 frames/cardiac cycle) and spatial resolutions (high in-plane 1.5 × 1.5 mm through-plane 5 mm, standard 1.8 × 1.8 x 8mm and low 3.0 × 3.0 x 10mm). CMR-FT comprised left ventricular (LV) global and segmental longitudinal/circumferential strain (GLS/GCS) and associated systolic strain rates (SR), and right ventricular (RV) GLS. Results Temporal but not spatial resolution did impact absolute strain and SR. Maximum absolute changes between lowest and highest temporal resolution were as follows: 1.8% and 0.3%/s for LV GLS and SR, 2.5% and 0.6%/s for GCS and SR as well as 1.4% for RV GLS. Changes of strain values occurred comparing 20 and 30 frames/cardiac cycle including LV and RV GLS and GCS (p < 0.001–0.046). In contrast, SR values (LV GLS/GCS SR) changed significantly comparing all successive temporal resolutions (p < 0.001–0.013). LV strain and SR reproducibility was not affected by either temporal or spatial resolution, whilst RV strain variability decreased with augmentation of temporal resolution. Conclusion Temporal but not spatial resolution significantly affects strain and SR in CMR-FT deformation analyses. Strain analyses require lower temporal resolution and 30 frames/cardiac cycle offer consistent strain assessments, whilst SR measurements gain from further increases in temporal resolution.
Issue Date
17-May-2021
Publisher
BioMed Central
Journal
Journal of Cardiovascular Magnetic Resonance 
Organization
Klinik für Kardiologie und Pneumologie 
eISSN
1532-429X
Language
English
Sponsor
Open-Access-Publikationsfonds 2021

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