| Zugriffsnummer | 48880 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Pilot tone-based prospective correction of respiratory motion for free-breathing myocardial T1 mapping |
| Autor(in); Institution |
Kerkering, Kirsten; 8.1, Biomedizinische Magnetresonanz, PTB-Berlin
Speier, P.; Siemens Healthcare, Erlangen, GERMANY
|
| Quelle/Jahr | Magnetic Resonance Materials in Physics, Biology and Medicine: 36 (2023), 135 - 150 |
| ISSN | 0968-5243 (PRINT) ; 1352-8661 (ONLINE) |
| DOI | |
| Verlag | Berlin [u.a.]: Springer |
| Zusammenfassung | Objective To provide respiratory motion correction for free-breathing myocardial T1 mapping using a pilot tone (PT) and a continuous golden-angle radial acquisition. Materials and methods During a 45 s prescan the PT is acquired together with a dynamic sagittal image covering multiple respiratory cycles. From these images, the respiratory heart motion in head-feet and anterior–posterior direction is estimated and two linear models are derived between the PT and heart motion. In the following scan through-plane motion is corrected prospectively with slice tracking based on the PT. In-plane motion is corrected for retrospectively. Our method was evaluated on a motion phantom and 11 healthy subjects. Results Non-motion corrected measurements using a moving phantom showed T1 errors of 14 ± 4% (p < 0.05) compared to a reference measurement. The proposed motion correction approach reduced this error to 3 ± 4% (p < 0.05). In vivo the respiratory motion led to an overestimation of T1 values by 26 ± 31% compared to breathhold T1 maps, which was successfully corrected to an average difference of 3 ± 2% (p < 0.05) between our free-breathing approach and breathhold data. Discussion Our proposed PT-based motion correction approach allows for T1 mapping during free-breathing with the same accuracy as a corresponding breathhold T1 mapping scan. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
| Themenbereich der Metrologie | Metrologie in der Medizin |
| Innovationscluster | Gesundheit |
| Geschäftsfelder | Metrologie für die Gesellschaft |
Zitierung
Ludwig, J., Kerkering, K., Speier, P., Schäffter, T., & Kolbitsch, C. (2023). Pilot tone-based prospective correction of respiratory motion for free-breathing myocardial T1 mapping. Magnetic Resonance Materials in Physics, Biology and Medicine, 36, 135–150. https://doi.org/10.1007/s10334-022-01032-4