Right main pulmonary artery distensibility on dynamic ventilation CT and its association with respiratory function

Oki, Tatsuya; Nagatani, Yukihiro; Ishida, Shota; Hashimoto, Masayuki; Oshio, Yasuhiko; Hanaoka, Jun; Uemura, Ryo; Watanabe, Yoshiyuki

doi:10.1186/s41747-024-00441-5

European Radiology Experimental

Table 4 Spearman rank correlations and coefficients of determination for spirometry and MLD and Goddard Classification Score for all cases and in patients with and without COPD

From: Right main pulmonary artery distensibility on dynamic ventilation CT and its association with respiratory function

			RV	%RV	TLC	RV/TLC	EFV₁/FVC	FEV₁ predicted
Total	MLDmax	r	-0.235	-0.365	-0.065	-0.268	0.312	0.132
		p-value	0.182	0.034*	0.712	0.126	0.060	0.435
		R²	0.032	0.111	0.010	0.040	0.094	0.042
	MLDmin	r	-0.023	-0.086	0.005	-0.044	0.094	-0.049
		p-value	0.898	0.627	0.975	0.805	0.579	0.774
		R²	0.000	0.008	0.001	0.000	0.006	0.001
	MLD CR	r	-0.309	-0.422	-0.133	-0.326	0.334	0.271
		p-value	0.075	0.013*	0.448	0.060	0.043*	0.104
		R²	0.067	0.141	0.012	0.070	0.132	0.101
	Goddard	r	0.069	-0.104	0.270	-0.168	-0.430	-0.401
		p-value	0.699	0.560	0.116	0.344	0.008*	0.014*
		R²	0.005	0.102	0.048	0.151	0.174	0.101
With COPD	MLDmax	r	-0.481	-0.642	-0.267	-0.466	0.236	0.095
		p-value	0.051	0.005*	0.284	0.060	0.345	0.708
		R²	0.227	0.220	0.043	0.140	0.147	0.132
	MLDmin	r	-0.348	-0.145	-0.384	-0.034	0.168	-0.173
		p-value	0.171	0.580	0.116	0.896	0.505	0.491
		R²	0.132	0.080	0.140	0.006	0.062	0.001
	MLD CR	r	-0.189	-0.346	0.075	-0.400	0.040	0.316
		p-value	0.468	0.174	0.769	0.112	0.874	0.202
		R²	0.022	0.054	0.031	0.122	0.026	0.150
	Goddard	r	0.000	-0.087	0.400	-0.285	-0.575	-0.464
		p-value	1.000	0.741	0.100	0.267	0.013*	0.052
		R²	0.017	0.165	0.113	0.300	0.246	0.091
Without COPD	MLDmax	r	0.055	-0.257	0.119	-0.100	-0.221	-0.176
		p-value	0.833	0.319	0.649	0.701	0.363	0.470
		R²	0.001	0.112	0.000	0.007	0.065	0.071
	MLDmin	r	0.353	0.120	0.430	0.123	-0.472	-0.225
		p-value	0.164	0.646	0.085	0.639	0.041*	0.355
		R²	0.108	0.004	0.097	0.008	0.261	0.125
	MLD CR	r	-0.274	-0.556	-0.243	-0.233	0.018	-0.064
		p-value	0.288	0.020*	0.348	0.368	0.943	0.794
		R²	0.120	0.300	0.089	0.041	0.008	0.004
	Goddard	r	0.057	-0.136	0.175	-0.066	0.360	0.006
		p-value	0.828	0.604	0.501	0.802	0.130	0.980
		R²	0.002	0.084	0.002	0.033	0.080	0.014

COPD Chronic obstructive pulmonary disease, FEV₁ Forced expiratory volume in 1 s, FVC Forced vital capacity, Goddard Goddard Classification Score, MLD Mean lung density, RV Residual volume, TLC Total lung capacity, r Spearman’s rank correlation coefficient, R² coefficients of determination
For association with statistically significant correlation, r-value and p-value are demonstrated in bold normal and bold italic styles, respectively
^*p < 0.05

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