Abstract:
This study evaluates the effect of Number Scan Average (NSA) to the image quality, represent
by the value of Signal to Noise Ratio (SNR) and to obtain the NSA value which has more
optimum image with high SNR. Each change of NSA obtained three images taken on the tissue
of signal of corpus, discus, spinal cord, and spinal myelo and a standart deviation of noise in
order to obtain a signal that will be calculated its SNR value of each tissue. Experimental results
show that the greater the NSA, the better the SNR. The SNR of the tissue corpus, discus, spinal
cord and spinal myelo increases from the NSA 1.8 to 2.0 is 52%, and NSA raised to 2.2 is 68.
Optimal image of NSA on MRI Lumbal is NSA 2.0 with short scanning time
