Imperatives of mathematical model of arterial blood dynamics for interpretation of doppler velocimetry: A narrative review oleh Umar Abubakar, Anthony Chukwuka Ugwu, Godwin Christopher Ezike Mbah, Tertsegha Tivde, Mohammed Sidi, Geofery Luntsi, Kalu Ochie, Alhaji Modu Ali, Anas Mohammed