| Autor: |
Julia, Traechtler, Maximilian, Fuetterer, Mohammed M, Albannay, Tobias, Hoh, Sebastian, Kozerke |
| Rok vydání: |
2022 |
| Zdroj: |
Magnetic resonance in medicineREFERENCES. |
| ISSN: |
1522-2594 |
| Popis: |
In contrast to conventional MR, signal-to-noise ratio (SNR) is not linearly dependent on field strength in hyperpolarized MR, as polarization is generated outside the MR system. Moreover, field inhomogeneity-induced artifacts and other practical limitations associated with field strengthsTheoretical noise and SNR behavior at different field strengths are investigated based on simulations. A thorough field comparison between 1.5T and 3T is performed using thermal and hyperpolarizedBased on theoretical considerations and simulations, the SNR of hyperpolarized MR at identical acquisition bandwidths is independent of the field strength for typical coil setups, while adaptively changing the acquisition bandwidth proportional to the static magnetic field allows for net SNR gains of up to 40% at 1.5T compared to 3T. In vitroHyperpolarized |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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