Table 2 Results of the extensive BITMAP exercise based on 3 Protocols with 10 tests and 13 Figures-of-Merit (FOMs).

From: In-vivo optical properties spectra across five body locations on ten subjects using time-domain diffuse optics

Protocol

Test

Unit

FOM

Opt

Count

Mean

Std

DOS system

BIP

IRF

ps

FWHM

All

18

293

197

124

BIP

Responsivity

mm2sr

Responsivity

All

18

6.5E-01

1.3E+00

9.9E-03

BIP

DarkCounts

counts/s

Dark Counts

All

19

1.82E+05

4.71E+05

2.44E+04

BIP

DNL

DNL

All

19

11.0%

9.7%

6.9%

MEDPHOT

Accuracy

Deviation

μa

25

15.3%

18.6%

7.0%

MEDPHOT

Accuracy

Deviation

\({\mu }_{s}^{{\prime} }\)

25

16.7%

19.5%

10.5%

MEDPHOT

Linearity

Linearity

μa

25

6.5%

7.6%

1.5%

MEDPHOT

Linearity

Linearity

\({\mu }_{s}^{{\prime} }\)

25

6.7%

8.9%

1.5%

MEDPHOT

Linearity

Crosstalk

μa

25

38.3%

85.8%

14.0%

MEDPHOT

Linearity

Crosstalk

\({\mu }_{s}^{{\prime} }\)

25

8.4%

13.6%

3.7%

MEDPHOT

Noise

counts

Counts1%

μa

19

4.18E+05

2.89E+05

5.86E+05

MEDPHOT

Noise

counts

Counts1%

\({\mu }_{s}^{{\prime} }\)

19

3.81E+05

5.24E+05

3.23E+05

MEDPHOT

Stability

min-1

Drift

μa

24

0.05%

0.16%

0.01%

MEDPHOT

Stability

min-1

Drift

\({\mu }_{s}^{{\prime} }\)

24

0.05%

0.10%

0.01%

MEDPHOT

Stability

Range

μa

24

8.6%

12.1%

5.4%

MEDPHOT

Stability

Range

\({\mu }_{s}^{{\prime} }\)

24

6.9%

8.3%

3.4%

MEDPHOT

Reproducibility

Reproducibility

μa

25

4.7%

7.4%

1.6%

MEDPHOT

Reproducibility

Reproducibility

\({\mu }_{s}^{{\prime} }\)

25

4.5%

4.5%

0.8%

NEUROPT

Detection

CNR

All

19

20.8

30.7

0.5

NEUROPT

Detection

Contrast

All

19

8.6%

6.5%

0.7%

  1. The exercise was applied to a total of 28 instruments in 12 institutions involving 53 researchers. Mean and Std are the average and standard deviation over the number of instruments (Count) engaged in the specific Test, while DOS system is the instrument used in the present study.