SAYED, I. S. MULTI-FREQUENCY ULTRASOUND IMAGING: PHANTOM STUDY. INTERNATIONAL JOURNAL OF ALLIED HEALTH SCIENCES, [S. l.], v. 2, n. 2, p. 304–309, 2018. Disponível em: https://journals.iium.edu.my/ijahs/index.php/IJAHS/article/view/164. Acesso em: 4 dec. 2023.