| Autor: |
Juergen Hennig, Antonia Barghoorn, Shuoyue Zhang, Maxim Zaitsev |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Magnetic resonance in medicineREFERENCES. 88(2) |
| ISSN: |
1522-2594 |
| Popis: |
To develop, optimize, and implement a single shot spiral turbo spin echo (TSE) sequence at 3T and to demonstrate its feasibility to acquire artifact free images of the central nervous system with 1 mm spatial resolution in200 ms.Spiral TSE sequences with annulated spiral segmentation have been implemented with different acquisition modes. In fixed mode, the duration of each spiral segment is fixed to fill the available acquisition time tImages of the brain with 1 mm spatial resolution acquired with a variable density spiral with ∼40% undersampling can be acquired in a single shot. All acquisition modes produce comparable image quality. Only mild artifacts in regions of strong susceptibility effects can be observed for ESP of 10 ms and below. The use of variable flip angle schemes allows seamless acquisition of consecutive slices and/or dynamic scans without waiting time between consecutive acquisitions. Comparison with images acquired at 1.5T shows reduced susceptibility artifacts within the brain and facial structures.Single shot spiral TSE has been demonstrated to enable highly efficient acquisition of high-resolution images of the brain in200 ms per slice. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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