Diagnostic Validity of Ultrasonography in Evaluation of Biliary Obstruction and its Comparison with Magnetic Resonance Cholangiopancreatography . Bangladesh Journal of Radiology and Imaging, [S. l.], v. 33, n. 2, p. 91–98, 2026. DOI: 10.3329/bjri.v33i2.90691. Disponível em: https://banglajol.info/index.php/BJRI/article/view/90691. Acesso em: 29 jun. 2026.