Table 1 DTI, DKI and NODDI Bingham-model results for the four scans in different days over a total of 2 months. Metrics were extracted from the fiber ring of the phantom.

From: Assessment of a diffusion phantom for quality assurance in brain microstructure diffusion MRI studies

 

Scan 1

Scan 2

Scan 3

Scan 4

CoV

FA

0.79 ± 0.05

0.8 ± 0.1

0.81 ± 0.04

0.81 ± 0.05

1.03%

MD

(×10− 3 mm2/s)

0.85 ± 0.08

0.8 ± 0.1

0.81 ± 0.08

0.82 ± 0.08

2.34%

DKI AK

0.17 ± 0.13

0.17 ± 0.13

0.19 ± 0.15

0.17 ± 0.13

4.95%

DKI MK

0.56 ± 0.13

0.57 ± 0.13

0.51 ± 0.17

0.56 ± 0.13

4.26%

MSDKI MK

0.83 ± 0.11

0.82 ± 0.11

0.77 ± 0.13

0.81 ± 0.11

2.82%

MSDKI MD

(×10− 3 mm2/s)

0.89 ± 0.12

0.97 ± 0.12

0.97 ± 0.19

0.98 ± 0.14

3.81%

β – fraction

0.36 ± 0.22

0.41 ± 0.25

0.37 ± 0.25

0.42 ± 0.21

6.5%

ODI

0.021 ± 0.002

0.0202 ± 0.0015

0.0202 ± 0.0009

0.0201 ± 0.0007

1.36%

Tissue volume fraction

0.98 ± 0.04

0.96 ± 0.05

0.94 ± 0.09

0.96 ± 0.04

1.47%

Intra – neurite

volume fraction

0.45 ± 0.08

0.46 ± 0.08

0.44 ± 0.08

0.45 ± 0.07

1.57%

MSE

0.0011 ± 0.0005

0.0016 ± 0.0016

0.0014 ± 0.0006

0.0012 ± 0.0004

14.5%

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