Hybrid ultrasound MRI for improved cardiac imaging and real-time respiration control
A hybridized dual-imaging system combining real-time ultrasound imaging and MRI was utilized for cardiac imaging at 1.5 T and 3 T. The ultrasound scanner with a programmable software interface was connected via computer to the MRI scanner. Electronic noise was eliminated with electromagnetic shieldi...
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| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
23 January 2010
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| In: |
Magnetic resonance in medicine
Year: 2010, Jahrgang: 63, Heft: 2, Pages: 290-296 |
| ISSN: | 1522-2594 |
| DOI: | 10.1002/mrm.22250 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1002/mrm.22250 Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/mrm.22250 
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| Verfasserangaben: | David A. Feinberg, Daniel Giese, D. Andre Bongers, Sudhir Ramanna, Maxim Zaitsev, Michael Markl, and Matthias Günther |
| Zusammenfassung: | A hybridized dual-imaging system combining real-time ultrasound imaging and MRI was utilized for cardiac imaging at 1.5 T and 3 T. The ultrasound scanner with a programmable software interface was connected via computer to the MRI scanner. Electronic noise was eliminated with electromagnetic shielding and grounding to the screen room. At 3 T, real-time prospective motion compensation in dynamic cine cardiac imaging was implemented using B-mode ultrasound imaging. The ultrasound technique avoided drawbacks such as signal saturation or steady-state interruption of the MR navigator gating. At 1.5 T, a low-latency real-time feedback to balanced steady state free precision MR imaging was performed in three normal volunteers. Results showed active tracking of the heart during respiratory motion and improvement in time-averaged cardiovascular images. Future studies can fully exploit the potential of the high-frequency position information provided by the ultrasound system for more advanced applications in real-time organ tracking. Magn Reson Med, 2010. © 2009 Wiley-Liss, Inc. |
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| Beschreibung: | Gesehen am 15.08.2023 |
| Beschreibung: | Online Resource |
| ISSN: | 1522-2594 |
| DOI: | 10.1002/mrm.22250 |