TY - JOUR
T1 - A noise reduction method based on a statistical test of high dimensional pixel vectors for dynamic and volumetric images
AU - Nambu, Kyojiro
AU - Iseki, H.
PY - 2005/2
Y1 - 2005/2
N2 - A noise reduction method applicable for dynamic and three-dimensional imaging modalities was evaluated. We applied our method to images obtained by CT, MRI, SPECT, angiography, and numerical phantom data, and measured the reduction of image noise. The standard deviation of the noise was reduced to 12-13% in a numerical dynamic phantom, 35-46% in dynamic CT, 19%-23% in a dynamic scintigram, 6-8% in dynamic SPECT, 13-15% in volumetric MRI of PVA resolution phantom, 12-17% in volumetric MRI of a PVA head phantom, and 50-53% in angiography of a moving phantom. The method reduced noise effectively, while spatial and temporal resolution remained satisfactory.
AB - A noise reduction method applicable for dynamic and three-dimensional imaging modalities was evaluated. We applied our method to images obtained by CT, MRI, SPECT, angiography, and numerical phantom data, and measured the reduction of image noise. The standard deviation of the noise was reduced to 12-13% in a numerical dynamic phantom, 35-46% in dynamic CT, 19%-23% in a dynamic scintigram, 6-8% in dynamic SPECT, 13-15% in volumetric MRI of PVA resolution phantom, 12-17% in volumetric MRI of a PVA head phantom, and 50-53% in angiography of a moving phantom. The method reduced noise effectively, while spatial and temporal resolution remained satisfactory.
KW - Cerebral blood flow
KW - Image processing
KW - Noise reduction
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U2 - 10.1177/197140090501800103
DO - 10.1177/197140090501800103
M3 - Article
AN - SCOPUS:17144416083
SN - 1120-9976
VL - 18
SP - 21
EP - 33
JO - Rivista di Neuroradiologia
JF - Rivista di Neuroradiologia
IS - 1
ER -