Correlation between quantitative multi-detector computed tomography lung analysis and pulmonary function tests in chronic obstructive pulmonary disease patients

Egyptian Journal of Radiology and Nuclear Medicine

Table 2 Statistical comparison between different groups regarding significant lung parameters of multi-detector CT by ANOVA test

CT parameters	Mean	SD	p value
Rt.U.LDI.percent
Normal	7.3^a	2.9
Mild constrictive	18^a	0.0	0.015*
Moderate constrictive	30.1^a	22.6
Severe constrictive	27.1^a	15.4
Very severe constrictive	45.5^b	19.9
RT.PD15.percent
Normal	113.5^a	13.4	0.047*
Mild constrictive	90^a	0.0
Moderate constrictive	73.6^a	41.6
Severe constrictive	72.5^a	29.5
Very severe constrictive	47.5^b	37.6
Lt.LLDI.percent
Normal	14.6^a	7.49	0.027*
Mild	19.7^a	.00
Moderate	24.5^a	11.8
Severe	29.1^a	16.6
Very severe	37.4^b	13.1
Lt.U.LDI.percent
Normal	12^a	9.2	0.004*
Mild	16.7^a	0.0
Moderate	24.3^a	12.6
Severe	26.5^a	16.9
Very severe	41.1^b	16.1
LT.PD15percent
Normal	101.5^a	20.5	0.049*
Mild	96^a	0.0
Moderate	76.9^a	35.4
Severe	72.8^a	33.6
Very severe	49.1^a	37.7
Both U.LDIpercent
Normal	9.5^a	8.7	0.009*
Mild	17.4^a	0.0
Moderate	27.7^a	18.2
Severe	26.7^a	15.7
Very severe	43.1^b	17.8