| Autor: |
Sina Marhabaie, Geoffrey Bodenhausen, Philippe Pelupessy |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Journal of Magnetic Resonance Open, Vol 4, Iss , Pp 100008- (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2666-4410 |
| DOI: |
10.1016/j.jmro.2020.100008 |
| Popis: |
Spatio-temporal encoding (SPEN) MRI is a non-Fourier imaging technique that encodes the spatial information in such a way that there is a direct relation between the signal intensity recorded during the acquisition and the spin density at a given position. In current spatio-temporal encoding methods, the first crucial step requires imparting a quadratic phase onto the transverse magnetization. Usually, this is achieved by simultaneous application of a frequency-swept (chirp) pulse and a linear magnetic field gradient. In this work, we show that a quadratic phase can be imparted by using quadratic encoding gradients. This leads to smaller specific absorption rates (SARs). Furthermore, the proposed sequence can be used for multi-slice applications similar to ordinary multi-slice sequences, but without the limitations of traditional SPEN. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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