Receiver bandwidth and snr

1. What is receiver bandwidth in SNR?
2. Does bandwidth affect SNR?
3. What is receiver bandwidth in MRI?
4. What is receiver channel bandwidth?

What is receiver bandwidth in SNR?

Receiver bandwidth is the amount of frequencies or wavelengths collected during the reception phase (frequency encoding) of RF pulses. Increasing the bandwidth reduces the scan time, susceptibility artefacts and chemical shift artefacts. Decreasing the band width to half will increase the SNR by 30%.

Does bandwidth affect SNR?

Increasing the bandwidth will reduce the SNR. Increasing the averages is the most appropriate technique to increase SNR. For example, take a T1 TSE sequence with a bandwidth of 100, averages 2 and a relative SNR of 100%. Increasing the bandwidth from 100 to 250 will reduce the SNR to 74% of the original SNR.

What is receiver bandwidth in MRI?

Bandwidth (BW) is the range of frequencies (measured in Hz) involved in the transmission or reception of an electronic signal. In MRI the term may be used to refer to the frequencies associated either with RF-excitation (transmitter bandwidth, tBW) or signal reception (receiver bandwidth, rBW).

What is receiver channel bandwidth?

Bandwidth B, BW or Δf is the difference between the upper and lower cut-off frequencies of radar receiver, and is typically measured in hertz. In case of a baseband channel or video signal, the bandwidth is equal to its upper cut-off frequency.