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Time efficient whole-brain coverage with MR fingerprinting using slice-interleaved echo-planar-imaging
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| Veröffentlicht in: | Scientific reports 8(2018) Artikel-Nummer 6667, 12 Seiten |
|---|---|
| Personen und Körperschaften: | , , |
| Titel: | Time efficient whole-brain coverage with MR fingerprinting using slice-interleaved echo-planar-imaging/ Benedikt Rieger, Mehmet Akçakaya, José C. Pariente, Sara Llufriu, Eloy Martinez-Heras, Sebastian Weingärtner & Lothar R. Schad |
| Format: | E-Book-Kapitel |
| Sprache: | Englisch |
| veröffentlicht: |
2018
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| Gesamtaufnahme: |
: Scientific reports, 8(2018) Artikel-Nummer 6667, 12 Seiten
, volume:8 |
| Quelle: | Verbunddaten SWB Lizenzfreie Online-Ressourcen |
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| 245 | 1 | 0 | |a Time efficient whole-brain coverage with MR fingerprinting using slice-interleaved echo-planar-imaging |c Benedikt Rieger, Mehmet Akçakaya, José C. Pariente, Sara Llufriu, Eloy Martinez-Heras, Sebastian Weingärtner & Lothar R. Schad |
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| 520 | |a Magnetic resonance fingerprinting (MRF) is a promising method for fast simultaneous quantification of multiple tissue parameters. The objective of this study is to improve the coverage of MRF based on echo-planar imaging (MRF-EPI) by using a slice-interleaved acquisition scheme. For this, the MRF-EPI is modified to acquire several slices in a randomized interleaved manner, increasing the effective repetition time of the spoiled gradient echo readout acquisition in each slice. Per-slice matching of the signal-trace to a precomputed dictionary allows the generation of T1 and T2* maps with integrated B1+ correction. Subsequent compensation for the coil sensitivity profile and normalization to the cerebrospinal fluid additionally allows for quantitative proton density (PD) mapping. Numerical simulations are performed to optimize the number of interleaved slices. Quantification accuracy is validated in phantom scans and feasibility is demonstrated in-vivo. Numerical simulations suggest the acquisition of four slices as a trade-off between quantification precision and scan-time. Phantom results indicate good agreement with reference measurements (Difference T1: −2.4 ± 1.1%, T2*: −0.5 ± 2.5%, PD: −0.5 ± 7.2%). In-vivo whole-brain coverage of T1, T2* and PD with 32 slices was acquired within 3:36 minutes, resulting in parameter maps of high visual quality and comparable performance with single-slice MRF-EPI at 4-fold scan-time reduction. | ||
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| contents | Magnetic resonance fingerprinting (MRF) is a promising method for fast simultaneous quantification of multiple tissue parameters. The objective of this study is to improve the coverage of MRF based on echo-planar imaging (MRF-EPI) by using a slice-interleaved acquisition scheme. For this, the MRF-EPI is modified to acquire several slices in a randomized interleaved manner, increasing the effective repetition time of the spoiled gradient echo readout acquisition in each slice. Per-slice matching of the signal-trace to a precomputed dictionary allows the generation of T1 and T2* maps with integrated B1+ correction. Subsequent compensation for the coil sensitivity profile and normalization to the cerebrospinal fluid additionally allows for quantitative proton density (PD) mapping. Numerical simulations are performed to optimize the number of interleaved slices. Quantification accuracy is validated in phantom scans and feasibility is demonstrated in-vivo. Numerical simulations suggest the acquisition of four slices as a trade-off between quantification precision and scan-time. Phantom results indicate good agreement with reference measurements (Difference T1: −2.4 ± 1.1%, T2*: −0.5 ± 2.5%, PD: −0.5 ± 7.2%). In-vivo whole-brain coverage of T1, T2* and PD with 32 slices was acquired within 3:36 minutes, resulting in parameter maps of high visual quality and comparable performance with single-slice MRF-EPI at 4-fold scan-time reduction. |
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| spelling | Rieger, Benedikt 1987- VerfasserIn (DE-588)1161116605 (DE-627)1024530590 (DE-576)506366677 aut, Time efficient whole-brain coverage with MR fingerprinting using slice-interleaved echo-planar-imaging Benedikt Rieger, Mehmet Akçakaya, José C. Pariente, Sara Llufriu, Eloy Martinez-Heras, Sebastian Weingärtner & Lothar R. Schad, 2018, 12, Text txt rdacontent, Computermedien c rdamedia, Online-Ressource cr rdacarrier, Published online: 27 April 2018, Gesehen am 14.06.2018, Magnetic resonance fingerprinting (MRF) is a promising method for fast simultaneous quantification of multiple tissue parameters. The objective of this study is to improve the coverage of MRF based on echo-planar imaging (MRF-EPI) by using a slice-interleaved acquisition scheme. For this, the MRF-EPI is modified to acquire several slices in a randomized interleaved manner, increasing the effective repetition time of the spoiled gradient echo readout acquisition in each slice. Per-slice matching of the signal-trace to a precomputed dictionary allows the generation of T1 and T2* maps with integrated B1+ correction. Subsequent compensation for the coil sensitivity profile and normalization to the cerebrospinal fluid additionally allows for quantitative proton density (PD) mapping. Numerical simulations are performed to optimize the number of interleaved slices. Quantification accuracy is validated in phantom scans and feasibility is demonstrated in-vivo. Numerical simulations suggest the acquisition of four slices as a trade-off between quantification precision and scan-time. Phantom results indicate good agreement with reference measurements (Difference T1: −2.4 ± 1.1%, T2*: −0.5 ± 2.5%, PD: −0.5 ± 7.2%). In-vivo whole-brain coverage of T1, T2* and PD with 32 slices was acquired within 3:36 minutes, resulting in parameter maps of high visual quality and comparable performance with single-slice MRF-EPI at 4-fold scan-time reduction., Weingärtner, Sebastian 1991- VerfasserIn (DE-588)1051891507 (DE-627)786975199 (DE-576)407522883 aut, Schad, Lothar R. 1956- VerfasserIn (DE-588)1028817630 (DE-627)731640241 (DE-576)376271221 aut, Enthalten in Scientific reports [London] : Macmillan Publishers Limited, part of Springer Nature, 2011 8(2018) Artikel-Nummer 6667, 12 Seiten Online-Ressource (DE-627)663366712 (DE-600)2615211-3 (DE-576)346641179 2045-2322 nnns, volume:8 year:2018 extent:12, http://dx.doi.org/10.1038/s41598-018-24920-z Verlag Resolving-System kostenfrei Volltext, https://www.nature.com/articles/s41598-018-24920-z Verlag kostenfrei Volltext, http://dx.doi.org/10.1038/s41598-018-24920-z LFER, LFER 2018-07-10T00:00:00Z |
| spellingShingle | Rieger, Benedikt, Weingärtner, Sebastian, Schad, Lothar R., Time efficient whole-brain coverage with MR fingerprinting using slice-interleaved echo-planar-imaging, Magnetic resonance fingerprinting (MRF) is a promising method for fast simultaneous quantification of multiple tissue parameters. The objective of this study is to improve the coverage of MRF based on echo-planar imaging (MRF-EPI) by using a slice-interleaved acquisition scheme. For this, the MRF-EPI is modified to acquire several slices in a randomized interleaved manner, increasing the effective repetition time of the spoiled gradient echo readout acquisition in each slice. Per-slice matching of the signal-trace to a precomputed dictionary allows the generation of T1 and T2* maps with integrated B1+ correction. Subsequent compensation for the coil sensitivity profile and normalization to the cerebrospinal fluid additionally allows for quantitative proton density (PD) mapping. Numerical simulations are performed to optimize the number of interleaved slices. Quantification accuracy is validated in phantom scans and feasibility is demonstrated in-vivo. Numerical simulations suggest the acquisition of four slices as a trade-off between quantification precision and scan-time. Phantom results indicate good agreement with reference measurements (Difference T1: −2.4 ± 1.1%, T2*: −0.5 ± 2.5%, PD: −0.5 ± 7.2%). In-vivo whole-brain coverage of T1, T2* and PD with 32 slices was acquired within 3:36 minutes, resulting in parameter maps of high visual quality and comparable performance with single-slice MRF-EPI at 4-fold scan-time reduction. |
| swb_id_str | 50636741X |
| title | Time efficient whole-brain coverage with MR fingerprinting using slice-interleaved echo-planar-imaging |
| title_auth | Time efficient whole-brain coverage with MR fingerprinting using slice-interleaved echo-planar-imaging |
| title_full | Time efficient whole-brain coverage with MR fingerprinting using slice-interleaved echo-planar-imaging Benedikt Rieger, Mehmet Akçakaya, José C. Pariente, Sara Llufriu, Eloy Martinez-Heras, Sebastian Weingärtner & Lothar R. Schad |
| title_fullStr | Time efficient whole-brain coverage with MR fingerprinting using slice-interleaved echo-planar-imaging Benedikt Rieger, Mehmet Akçakaya, José C. Pariente, Sara Llufriu, Eloy Martinez-Heras, Sebastian Weingärtner & Lothar R. Schad |
| title_full_unstemmed | Time efficient whole-brain coverage with MR fingerprinting using slice-interleaved echo-planar-imaging Benedikt Rieger, Mehmet Akçakaya, José C. Pariente, Sara Llufriu, Eloy Martinez-Heras, Sebastian Weingärtner & Lothar R. Schad |
| title_in_hierarchy | Time efficient whole-brain coverage with MR fingerprinting using slice-interleaved echo-planar-imaging / Benedikt Rieger, Mehmet Akçakaya, José C. Pariente, Sara Llufriu, Eloy Martinez-Heras, Sebastian Weingärtner & Lothar R. Schad, |
| title_short | Time efficient whole-brain coverage with MR fingerprinting using slice-interleaved echo-planar-imaging |
| title_sort | time efficient whole brain coverage with mr fingerprinting using slice interleaved echo planar imaging |
| url | http://dx.doi.org/10.1038/s41598-018-24920-z, https://www.nature.com/articles/s41598-018-24920-z |