| Autor: |
Junlan, Lu, Ziyi, Wang, Elianna, Bier, Suphachart, Leewiwatwong, David, Mummy, Bastiaan, Driehuys |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Magnetic resonance in medicine. 88(2) |
| ISSN: |
1522-2594 |
| Popis: |
To correct for RF inhomogeneity for in vivoRF-depolarization mapping was evaluated first in digital simulations and then in 51 subjects who had undergone radialRF-depolarization and template-based mapping methods yielded a pattern of RF-inhomogeneity consistent with the expected variation based on coil architecture. The resulting corrected images were visually similar, but meaningfully distinct from those generated using standard N4ITK correction. The N4ITK algorithm eliminated the physiologically expected anterior-posterior gradient (-0.04 ± 1.56%/cm, P 0.001). These 2 newly introduced methods of RF-depolarization and template correction retained the physiologically expected anterior-posterior ventilation gradient in healthy subjects (2.77 ± 2.09%/cm and 2.01 ± 2.73%/cm, respectively).Randomized 3D |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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