| Zugriffsnummer | 44641 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Autocalibrated cardiac tissue phase mapping with multiband imaging and k‐t acceleration |
| Autor(in); Institution |
Ferrazzi, Giulio; 8.1, Biomedizinische Magnetresonanz, PTB-Berlin
Bassenge, Jean Pierre; 8.1, Biomedizinische Magnetresonanz, PTB-Berlin
Mayer, Johannes; 8.1, Biomedizinische Magnetresonanz, PTB-Berlin
Ruh, A.; Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
Roujol, S.; School of Biomedical Engineering and Imaging Sciences, King’s College London, London, UK
Ittermann, Bernd; 8.1, Biomedizinische Magnetresonanz, PTB-Berlin
Cordero-Grande, L.; Biomedical Image Technologies, ETSI Telecomunicación, Universidad Politécnica de Madrid & CIBER-BBN, Madrid, SPAIN
Schmitter, Sebastian; 8.1, Biomedizinische Magnetresonanz, PTB-Berlin
|
| Quelle/Jahr | Magnetic Resonance in Medicine: 84 (2020), 2429 - 2441 |
| ISSN | 0740-3194 (PRINT) ; 1522-2594 (ONLINE) |
| DOI | |
| Verlag | New York, NY: Wiley |
| Freie Schlagworte | autocalibration ; cardiac tissue phase mapping ; multiband k-t acceleration ; single breath-hold |
| Zusammenfassung | Purpose: To develop an autocalibrated multiband (MB) CAIPIRINHA acquisition scheme with in‐plane k‐t acceleration enabling multislice three‐directional tissue phase mapping in one breath‐hold. Methods: A k‐t undersampling scheme was integrated into a time‐resolved electrocardiographic‐triggered autocalibrated MB gradient‐echo sequence. The sequence was used to acquire data on 4 healthy volunteers with MB factors of two (MB2) and three (MB3), which were reconstructed using a joint reconstruction algorithm that tackles both k‐t and MB acceleration. Forward simulations of the imaging process were used to tune the reconstruction model hyperparameters. Direct comparisons between MB and single‐band tissue phase‐mapping measurements were performed. Results: Simulations showed that the velocities could be accurately reproduced with MB2 k‐t (average ± twice the SD of the RMS error of 0.08 ± 0.22 cm/s and velocity peak reduction of 1.03% ± 6.47% compared with fully sampled velocities), whereas acceptable results were obtained with MB3 k‐t (RMS error of 0.13 ± 0.58 cm/s and peak reduction of 2.21% ± 13.45%). When applied to tissue phase‐mapping data, the proposed technique allowed three‐directional velocity encoding to be simultaneously acquired at two/three slices in a single breath‐hold of 18 heartbeats. No statistically significant differences were detected between MB2/MB3 k‐t and single‐band k‐t motion traces averaged over the myocardium. Regional differences were found, however, when using the American Heart Association model for segmentation. Conclusion: An autocalibrated MB k‐t acquisition/reconstruction framework is presented that allows three‐directional velocity encoding of the myocardial velocities at multiple slices in one breath‐hold. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
| Themenbereich der Metrologie | Metrologie in der Medizin |
| Förderinformationen (1) |
Förderername: Engineering and Physical Sciences Research Council (EPSRC)
Förderer ID: 0000 0004 0394 8681 Förderer ID Typ: ISNI Förderungsnummer: Grant/Award No. EP/R010935/1 |
| Förderinformationen (2) |
Förderername: Deutsche Forschungsgemeinschaft (DFG)
Förderer ID: 0000 0001 2096 9829 Förderer ID Typ: ISNI Förderungsnummer: Grant/Award No. GRK2260 |
Zitierung
Ferrazzi, G., Bassenge, J. P., Mayer, J., Ruh, A., Roujol, S., Ittermann, B., Schäffter, T., Cordero-Grande, L., & Schmitter, S. (2020). Autocalibrated cardiac tissue phase mapping with multiband imaging and k‐t acceleration. Magnetic Resonance in Medicine, 84, 2429–2441. https://doi.org/10.1002/mrm.28288