Evaluation of ultrafast wave-CAIPI MPRAGE for visual grading and automated measurement of brain tissue volume
BACKGROUND AND PURPOSE: Volumetric brain MR imaging typically has long acquisition times. We sought to evaluate an ultrafast MPRAGE sequence based on Wave-CAIPI (Wave-MPRAGE) compared with standard MPRAGE for evaluation of regional brain tissue volumes. MATERIALS AND METHODS: We performed scan-resca...
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
Aug 2020
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| In: |
American journal of neuroradiology
Year: 2020, Volume: 41, Issue: 8, Pages: 1388-1396 |
| ISSN: | 1936-959X |
| DOI: | 10.3174/ajnr.A6703 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3174/ajnr.A6703
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| Author Notes: | M.G.F. Longo, J. Conklin, S.F. Cauley, K. Setsompop, Q. Tian, D. Polak, M. Polackal, D. Splitthoff, W. Liu, R. G. Gonzalez, P.W. Schaefer, J.E. Kirsch, O. Rapalino, S.Y. Huang |
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| 100 | 1 | |a Longo, Maria Gabriela |e VerfasserIn |0 (DE-588)1218321784 |0 (DE-627)1733748121 |4 aut | |
| 245 | 1 | 0 | |a Evaluation of ultrafast wave-CAIPI MPRAGE for visual grading and automated measurement of brain tissue volume |c M.G.F. Longo, J. Conklin, S.F. Cauley, K. Setsompop, Q. Tian, D. Polak, M. Polackal, D. Splitthoff, W. Liu, R. G. Gonzalez, P.W. Schaefer, J.E. Kirsch, O. Rapalino, S.Y. Huang |
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| 520 | |a BACKGROUND AND PURPOSE: Volumetric brain MR imaging typically has long acquisition times. We sought to evaluate an ultrafast MPRAGE sequence based on Wave-CAIPI (Wave-MPRAGE) compared with standard MPRAGE for evaluation of regional brain tissue volumes. MATERIALS AND METHODS: We performed scan-rescan experiments in 10 healthy volunteers to evaluate the intraindividual variability of the brain volumes measured using the standard and Wave-MPRAGE sequences. We then evaluated 43 consecutive patients undergoing brain MR imaging. Patients underwent 3T brain MR imaging, including a standard MPRAGE sequence (acceleration factor [R] = 2, acquisition time [TA] = 5.2 minutes) and an ultrafast Wave-MPRAGE sequence (R= 9, TA = 1.15 minutes for the 32-channel coil;R= 6, TA = 1.75 minutes for the 20-channel coil). Automated segmentation of regional brain volume was performed. Two radiologists evaluated regional brain atrophy using semiquantitative visual rating scales. RESULTS: The mean absolute symmetrized percent change in the healthy volunteers participating in the scan-rescan experiments was not statistically different in any brain region for both the standard and Wave-MPRAGE sequences. In the patients undergoing evaluation for neurodegenerative disease, the Dice coefficient of similarity between volumetric measurements obtained from standard and Wave-MPRAGE ranged from 0.86 to 0.95. Similarly, for all regions, the absolute symmetrized percent change for brain volume and cortical thickness showed <6% difference between the 2 sequences. In the semiquantitative visual comparison, the differences between the 2 radiologists' scores were not clinically or statistically significant. CONCLUSIONS: Brain volumes estimated using ultrafast Wave-MPRAGE show low intraindividual variability and are comparable with those estimated using standard MPRAGE in patients undergoing clinical evaluation for suspected neurodegenerative disease. | ||
| 650 | 4 | |a artifacts | |
| 650 | 4 | |a atrophy | |
| 650 | 4 | |a disease | |
| 650 | 4 | |a frontotemporal dementia | |
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| 650 | 4 | |a mr-images | |
| 650 | 4 | |a optimization | |
| 650 | 4 | |a registration | |
| 650 | 4 | |a robust | |
| 700 | 1 | |a Conklin, J. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Cauley, S. F. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Setsompop, K. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Tian, Q. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Polak, Daniel |d 1991- |e VerfasserIn |0 (DE-588)1197552049 |0 (DE-627)167917360X |4 aut | |
| 700 | 1 | |a Polackal, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Splitthoff, D. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Liu, W. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Gonzalez, R. G. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Schaefer, P. W. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Kirsch, J. E. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Rapalino, O. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Huang, S. Y. |e VerfasserIn |4 aut | |
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