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Abstract
Maps of the MT-saturation as derived in FLASH-based multi-parameter mapping (MPM) are largely corrected for effects of flip angle inhomogeneity. Here, we present a heuristic model for residual effects of B1+ that is rooted in the dynamics of macromolecule saturation. Model parameters were validated for brain tissues by variation of the MT-pulse flip angle in an established MPM protocol. White and gray matter exhibited similar values. A post-hoc correction by an independent B1+ map yielded more symmetric MT maps and reduced variation across white matter.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the International Society for Magnetic Resonance in Medicine Annual Meeting 2015 |
| Place of Publication | Berkeley |
| Publisher | International Society for Magnetic Resonance in Medicine |
| Pages | 3360 |
| Number of pages | 1 |
| Volume | 23 |
| Publication status | Published - 2015 May 30 |
| Event | ISMRM 23rd Annual Meeting and Exhibition - Toronto, Canada Duration: 2015 May 30 → 2015 Jun 5 |
Publication series
| Name | Proceedings of the ISMRM |
|---|---|
| Publisher | International Society for Magnetic Resonance in Medicine |
| Volume | 23 |
| ISSN (Electronic) | 1545-4428 |
Conference
| Conference | ISMRM 23rd Annual Meeting and Exhibition |
|---|---|
| Country/Territory | Canada |
| City | Toronto |
| Period | 2015/05/30 → 2015/06/05 |
Subject classification (UKÄ)
- Engineering and Technology
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Dive into the research topics of 'Correction for Residual Effects of B1+ Inhomogeniety on MT Saturation in FLASH-Based Multi-Parameter Mapping of the Brain'. Together they form a unique fingerprint.Projects
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Multiparametric mapping of the brain at 7T using gradient echoes
Helms, G. (PI), Olsson, H. (Research student) & Andersen, M. (Researcher)
2016/11/01 → 2020/11/01
Project: Research
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