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