Table 2

Mean values of the variables obtained for normal granulocytic precursors

Blasts

Promyelocytes

P

Area μ²

111.9

112.7

0.75

Perimeter

579

636

<0.0001

Form factor

0.957

0.792

<0.0001

Mean gray level

129.3

120.8

<0.0001

SD gray level*

8.6

8.1

0.04

Haralick's entropy

7.90

7.77

0.02

Inertia

4.17

3.82

<0.0001

Local homogeneity

0.535

0.538

0.51

Energy

7177

6430

<0.0001

Contrast

4.17

3.82

0.005

Diagonal Moment

19.1

17.7

<0.0001

Cluster prominence

3.38

2.79

0.01

FD** Minkowski

2.134

2.128

0.08

R² ***

0.99647

0.99613

0.007

* SD = standard deviation; ** FD = fractal dimension, ***R² goodness-of-fit of the fractal dimension

Vido et al. Diagnostic Pathology 2011 6:93   doi:10.1186/1746-1596-6-93