دورية أكاديمية
BUDA-MESMERISE:Rapid acquisition and unsupervised parameter estimation for T-1, T-2, M-0, B-0, and B-1 maps
| العنوان: | BUDA-MESMERISE:Rapid acquisition and unsupervised parameter estimation for T-1, T-2, M-0, B-0, and B-1 maps |
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| المؤلفون: | So, S., Park, H.W., Kim, B., Fritz, F.J., Poser, B.A., Roebroeck, A., Bilgic, B. |
| المصدر: | So , S , Park , H W , Kim , B , Fritz , F J , Poser , B A , Roebroeck , A & Bilgic , B 2022 , ' BUDA-MESMERISE : Rapid acquisition and unsupervised parameter estimation for T-1, T-2, M-0, B-0, and B-1 maps ' , Magnetic Resonance in Medicine , vol. 88 , no. 1 , pp. 292-308 . https://doi.org/10.1002/mrm.29228Test |
| سنة النشر: | 2022 |
| المجموعة: | Maastricht University Research Publications |
| مصطلحات موضوعية: | distortion correction, multicontrast MRI, quantitative MRI, stimulated echo, unsupervised parameter estimation, PROTON DENSITY, TISSUE CHARACTERIZATION, INCREASED SENSITIVITY, WHITE-MATTER, DOUBLE-ECHO, T2, T1, DIFFUSION, BRAIN |
| الوصف: | Purpose Rapid acquisition scheme and parameter estimation method are proposed to acquire distortion-free spin- and stimulated-echo signals and combine the signals with a physics-driven unsupervised network to estimate T-1, T-2, and proton density (M-0) parameter maps, along with B-0 and B-1 information from the acquired signals. Theory and Methods An imaging sequence with three 90 degrees RF pulses is utilized to acquire spin- and stimulated-echo signals. We utilize blip-up/-down acquisition to eliminate geometric distortion incurred by the effects of B-0 inhomogeneity on rapid EPI acquisitions. For multislice imaging, echo-shifting is applied to utilize dead time between the second and third RF pulses to encode information from additional slice positions. To estimate parameter maps from the spin- and stimulated-echo signals with high fidelity, 2 estimation methods, analytic fitting and a novel unsupervised deep neural network method, are developed. Results The proposed acquisition provided distortion-free T-1, T-2, relative proton density (M0), B-0, and B-1 maps with high fidelity both in phantom and in vivo brain experiments. From the rapidly acquired spin- and stimulated-echo signals, analytic fitting and the network-based method were able to estimate T-1, T-2, M-0, B-0, and B-1 maps with high accuracy. Network estimates demonstrated noise robustness owing to the fact that the convolutional layers take information into account from spatially adjacent voxels. Conclusion The proposed acquisition/reconstruction technique enabled whole-brain acquisition of coregistered, distortion-free, T-1, T-2, M-0, B-0, and B-1 maps at 1 x 1 x 5 mm(3) resolution in 50 s. The proposed unsupervised neural network provided noise-robust parameter estimates from this rapid acquisition. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | https://cris.maastrichtuniversity.nl/en/publications/c46cca8b-5080-4c62-8887-09df8fb2e628Test |
| DOI: | 10.1002/mrm.29228 |
| الإتاحة: | https://doi.org/10.1002/mrm.29228Test https://cris.maastrichtuniversity.nl/en/publications/c46cca8b-5080-4c62-8887-09df8fb2e628Test https://cris.maastrichtuniversity.nl/ws/files/185174818/Roebroeck-2022-BUDA-MESMERISE-Rapid-acquisition-and.pdfTest |
| حقوق: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.87BA1B90 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/mrm.29228 |
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