| Zugriffsnummer | 44688 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Development of a rotation phantom for phase contrast MRI sequence validation and quality control |
| Autor(in); Institution |
Vali, A.; Department of Radiology, Northwestern University, Chicago, Illinois, USA
Schmitter, Sebastian; 8.1, Biomedizinische Magnetresonanz, PTB-Berlin
Ma, L.; Department of Radiology, Northwestern University, Chicago, Illinois, USA
Flassbeck, S.; Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, GERMANY
Schmidt, S.; Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, GERMANY
Markl, M.; Department of Radiology, Northwestern University, Chicago, Illinois, USA
Schnell, S.; Department of Radiology, Northwestern University, Chicago, Illinois, USA
|
| Quelle/Jahr | Magnetic Resonance in Medicine: 84 (2020), 6, 3333 - 3341 |
| ISSN | 0740-3194 (print) ; 1522-2594 (online) |
| DOI | |
| Verlag | New York, NY: Wiley / ISMRM |
| Freie Schlagworte | in vitro ; phase-contrast (PC) MRI ; quality control ; rotation phantom ; validation |
| Zusammenfassung | Purpose: To develop a reliable, consistent, and reproducible reference phantom for error quantification of phase-contrast MRI so it can be used for validation and quality control. Methods: An air-driven rotation phantom consisting of a steadily rotating cylinder surrounded by a static ring both filled with agarose gel was developed. Rotational speed was measured and controlled in real time using an optical counter and a closed-loop controller. Consistency of the phantom was assessed by recording variations in rotational speed. The phantom was imaged with 2D phase-contrast MRI, and the velocity at each point was compared with analytically predicted velocity. Additionally, to examine reproducibility, the phantom was run with the same rotational speed on 2 different days and imaged using the same phase-contrast MRI protocol. Results: The rotation phantom provided consistent rotational speed with 2 revolutions per minute SD from the set value for 20 min. Comparison between predicted and measured velocities demonstrated excellent agreement (intraclass correlation coefficient of 0.99). The RMS error in velocity components were less than 1% of maximum value. The scan-rescan experiment showed that the phantom can reproduce the same velocity distributions (intraclass correlation coefficient of 0.99) using the same rotational speed and MRI settings. Conclusion: The developed rotation phantom provided well-defined and reproducible linear velocity distributions, which can be used for systematic and quantitative error analysis of phase-contrast MRI for a range of known velocities. |
| Themenbereich der Metrologie | Metrologie in der Medizin |
| Förderinformationen (1) |
Förderername: American Heart Association (AHA)
Förderer ID: 0000 0001 2169 3924 Förderer ID Typ: ISNI Förderungsnummer: grants 18POST33990451 and 16SDG30420005 |
| Förderinformationen (2) |
Förderername: National Institutes of Health (NIH)
Förderer ID: 0000 0001 1942 0345 Förderer ID Typ: ISNI Förderungsnummer: R01HL115828 and F30HL137279 |
Zitierung
Vali, A., Schmitter, S., Ma, L., Flassbeck, S., Schmidt, S., Markl, M., & Schnell, S. (2020). Development of a rotation phantom for phase contrast MRI sequence validation and quality control. Magnetic Resonance in Medicine, 84(6), 3333–3341. https://doi.org/10.1002/mrm.28343