Native cardiac T1 Mapping: Standardized inline analysis of long and short axis at three identical 1.5 Tesla MRI scanners

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Heiß R, Wiesmüller M, Uder M, May M, Wüst W
Zeitschrift: European Journal of Radiology
Jahr der Veröffentlichung: 2018
Band: 107
Seitenbereich: 203-208
ISSN: 0720-048X


Abstract

BACKGROUND: Interpretation of native T1 time values remains difficult due to limited hard- and software comparability and the lack of measurement recommendations for the number of slices and their orientation. To provide a standardized comparison of native T1 time values in short and long axis and to investigate the interscanner reproducibility.
METHODS: 78 cardiac MRIs in 26 healthy volunteers were performed with three structurally identical 1.5 T MRI scanners. A commercially available software package for T1 mapping with automatic in-line motion correction was used for analysis. On T1 mapping images regions of interest were manually placed in each of the 16 myocardial segments according to the AHA model in three short and three long axis.
RESULTS: A total of 2652 ROIs were drawn and 102 segments per volunteer were analysed. Interscanner reproducibility was high and the mean myocardial T1 time value for all evaluated segments was 996 ± 34 ms. Significant variations of T1 time values were found between heart segments in the same axis. Mean T1 time values were comparable between long and short axis but differed in 33% of corresponding short and long axis segments.
CONCLUSIONS: Native T1 time values in short and long axis are highly reproducible but can vary significantly between heart segments in the same axis. Comparability between corresponding short and long axis segments is limited. To get representative results native T1 time values should be obtained in more than one heart segment and for follow-up studies identical segments should be used to avoid a systematic bias.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Heiß, Rafael Dr. med.
Professur für Innere Medizin (Hochdruckforschung)
May, Matthias PD Dr.
Radiologisches Institut
Uder, Michael Prof. Dr.
Lehrstuhl für Diagnostische Radiologie
Wiesmüller, Marco
Lehrstuhl für Klinische Nuklearmedizin
Wüst, Wolfgang PD Dr.
Medizinische Fakultät


Zitierweisen

APA:
Heiß, R., Wiesmüller, M., Uder, M., May, M., & Wüst, W. (2018). Native cardiac T1 Mapping: Standardized inline analysis of long and short axis at three identical 1.5 Tesla MRI scanners. European Journal of Radiology, 107, 203-208. https://dx.doi.org/10.1016/j.ejrad.2018.09.009

MLA:
Heiß, Rafael, et al. "Native cardiac T1 Mapping: Standardized inline analysis of long and short axis at three identical 1.5 Tesla MRI scanners." European Journal of Radiology 107 (2018): 203-208.

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