Abstract #3510
SNR Measurement on Single Images of Phantom Using Wavelet Transforms
Zhiyue J. Wang 1,2 and Jonathan M. Chia 3
1
University of Texas Southwestern Medical
Center, Dallas, Texas, United States,
2
Children's
Medical Center Dallas, Dallas, Texas, United States,
3
Philips
Healthcare, Ohio, United States
In SNR assessment of phantom MR images, the noise level
cannot be obtained from the background areas reliably
when a parallel imaging technique is used. The current
gold standard is to use a difference image for noise
assessment on the object. In practice the difference
image methods are prone to artifacts from position
drifts and solution flow. We present a method for SNR
measurement from one image only, based on the wavelet
transform. The new method is validated using the
difference image method.
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