Quantification of heterogeneity observed in medical images

BMC Medical Imaging

Table 2 Automated, shape-unware ranking versus ranking by human experts

		Shape unaware automated ranking
		Shape aware	Shape unaware
Set	Area (px)	Oncologist	Resident	Professional
A	0–30	0.038	0.010	0.038
B	30–50	0.100	0.015	0.020
C	50–75	0.389	0.075	0.050
D	50–75	0.067	0.025	0.010
E	75–100	0.200	0.100	0.021
F	100-125	0.250	0.130	0.083
G	125–300	0.160	0.100	0.123
Mean		0.17±0.05	0.06±0.02	0.05±0.02

Same as Table 1 except that automated ranking via ζ _u was implemented. As is seen in columns 4 and 5, the shape-unaware automated rankings agree very well with the two experts who did not consider shape as contributing to overall object heterogeneity.

ISSN: 1471-2342