Single breath-hold saturation recovery 3D cardiac T1 mapping via compressed SENSE at 3T

Tiago Ferreira da Silva, Carlos Galan-Arriola, Paula Montesinos, Gonzalo Javier López-Martín, Manuel Desco, Valentín Fuster, Borja Ibáñez, Javier Sanchez-Gonzalez

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Objectives: To propose and validate a novel imaging sequence that uses a single breath-hold whole-heart 3D T1 saturation recovery compressed SENSE rapid acquisition (SACORA) at 3T. Methods: The proposed sequence combines flexible saturation time sampling, compressed SENSE, and sharing of saturation pulses between two readouts acquired at different RR intervals. The sequence was compared with a 3D saturation recovery single-shot acquisition (SASHA) implementation with phantom and in vivo experiments (pre and post contrast; 7 pigs) and was validated against the reference inversion recovery spin echo (IR-SE) sequence in phantom experiments. Results: Phantom experiments showed that the T1 maps acquired by 3D SACORA and 3D SASHA agree well with IR-SE. In vivo experiments showed that the pre-contrast and post-contrast T1 maps acquired by 3D SACORA are comparable to the corresponding 3D SASHA maps, despite the shorter acquisition time (15s vs. 188s, for a heart rate of 60 bpm). Mean septal pre-contrast T1 was 1453 ± 44 ms with 3D SACORA and 1460 ± 60 ms with 3D SASHA. Mean septal post-contrast T1 was 824 ± 66 ms and 824 ± 60 ms. Conclusion: 3D SACORA acquires 3D T1 maps in 15 heart beats (heart rate, 60 bpm) at 3T. In addition to its short acquisition time, the sequence achieves good T1 estimation precision and accuracy.

Original languageEnglish
Pages (from-to)865-876
Number of pages12
JournalMagnetic Resonance Materials in Physics, Biology, and Medicine
Volume33
Issue number6
DOIs
StatePublished - Dec 2020

Keywords

  • 3D cardiac T1 mapping
  • Cardiovascular magnetic resonance
  • Saturation recovery
  • Single breath-hold
  • Tissue characterization

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