What is a limitation of decreasing receiver bandwidth?

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Decreasing receiver bandwidth has a direct impact on the minimum echo time (TE) achievable during MRI acquisition. When the bandwidth is narrower, it leads to a longer time required to sample the signal, which subsequently increases the minimum TE. This is because the system needs more time to adequately capture the signal from the tissue being imaged, resulting in a longer duration between the excitation pulse and the echo signal.

In contrast, while narrowing the receiver bandwidth can also improve signal-to-noise ratio (SNR) and may reduce noise, these outcomes are typically not considered limitations in the same way that an increased minimum TE is. The relationship between the bandwidth and the minimum TE is a crucial factor to consider in protocol design, especially in scenarios where time efficiency is essential.

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