TY - JOUR AU - forouza, amirhossein AU - aghaeizade, reza AU - sato, youshi AU - houri, masa TI - Medial-axis Enhancement of Tubular Structures and its Application in the Extraction of Portal Veins JO - Journal of Information and Communication Technology VL - 4 IS - 13 SP - 57 EP - 66 PY - 2019 DO - ER -