Egyptian Journal of Radiology and Nuclear Medicine

Table 4 Distribution of honeycombing, ground glass, reticular, emphysema, and normal lung derived from all CT slices by QCT according to IIP types

From: Visual and quantitative assessment of HRCT pulmonary changes in idiopathic interstitial pneumonia with PFT correlation

			HRCT finding
		UIP	NSIP	DIP	LIP
Normal lung %	Mean	21.15	36.50	30.84	34.94
	Standard deviation	8.37	29.95	.	0.00
	Median	18.24	19.21	30.84	34.94
	Minimum	9.98	19.21	30.84	34.94
	Maximum	38.99	71.08	30.84	34.94
	Mean	23.09	23.21	20.35	16.70
	Standard deviation	3.33	9.47	.	0.00
Ground glass %	Median	22.76	28.68	20.35	16.70
	Minimum	16.86	12.28	20.35	16.70
	Maximum	29.36	28.68	20.35	16.70
	Mean	14.88	11.10	9.02	14.73
	Standard deviation	6.46	6.29	.	0.00
Honeycombing %	Median	12.27	14.73	9.02	14.73
	Minimum	5.93	3.84	9.02	14.73
	Maximum	25.56	14.73	9.02	14.73
	Mean	18.78	14.04	21.24	16.67
Reticular opacities %	Standard deviation	3.63	6.69	.	0.00
	Median	18.55	17.90	21.24	16.67
	Minimum	11.98	6.32	21.24	16.67
	Maximum	27.10	17.90	21.24	16.67
Emphysema %	Mean	22.09	15.15	18.55	16.96
	Standard deviation	4.70	7.50	.	0.00
	Median	21.17	19.48	18.55	16.96
	Minimum	14.94	6.48	18.55	16.96
	Maximum	31.60	19.48	18.55	16.96

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