Table 4. Histogram parameters derived from standard HRCT and from reduced HRCT.

Assessment score	Standard HRCT				Reduced HRCT			P value
	Mean	SD	Range		Mean	SD	Range
Kurtosis	12.50	7.12	2.95–40.85		22.4	8.66	4.73–47.53	<0.001
Skewness	2.58	0.9	0.85–4.80		3.63	0.94	1.34–5.47	<0.001

HRCT, high-resolution computed tomography; SD, standard deviation.