Ibtesam Zafar; Haroonur Rashid; Shehzad Aslam; Shahid Mukhtar; Yasma Ashraf; Samreen Mushtaq. Ct and Echocardiographic Correlation of Pulmonary Artery Enlargement and Right Ventricular Dysfunction in Copd Patients. IJPRT 2026, 16, 2308-2314.