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Table 3 Image quality of T1-FSE and MAVRIC-fast depending on LAVA-Flex assessment concerning blurring

From: Metal artifact reduction in patients with dental implants using multispectral three-dimensional data acquisition for hybrid PET/MRI

  Reader 1 Reader 2
T1-FSE MAVRIC-fast p value T1-FSE MAVRIC-fast p value
Distinction of anatomy       
 Group 1 1.00 ± 0.00 1.80 ± 0.45 0.046 1.25 ± 0.50 1.50 ± 0.58 0.564
 Group 2 2.05 ± 0.76 1.75 ± 0.44 0.109 2.29 ± 0.72 1.67 ± 0.48 0.001*
Blurring       
 Group 1 2.00 ± 0.71 1.20 ± 0.45 0.102 2.00 ± 0.82 1.00 ± 0.00 0.102
 Group 2 2.80 ± 0.70 1.40 ± 0.68 <0.001* 3.00 ± 0.71 1.48 ± 0.68 <0.001*
Noise       
 Group 1 1.00 ± 0.00 2.00 ± 0.71 0.059 1.00 ± 0.00 2.00 ± 0.82 0.102
 Group 2 1.70 ± 0.87 2.30 ± 0.47 0.003* 1.62 ± 0.81 2.43 ± 0.51 <0.001*
  1. Image quality was assessed by two readers using a five-point scale from 1 (good depiction/no artifacts) to 5 (not assessable/non-diagnostic), 3 = without diagnostic impairment and 4 = with impairment. Data are mean ± standard deviation. After Bonferroni correction, statistical significance is denoted by p < 0.0167 (* = statistically significant). Group 1: blurring by dental alloys in LAVA-Flex was rated 1, 2, or 3. Group 2: blurring by dental alloys in LAVA-Flex was rated 4 or 5.