1 Department of Physics, Faculty of Science, Unité de Recherche de la Matière Condensée, d'Electronique et de Traitement du Signal, University of Dschang, Dschang, Cameroon. [email protected].
2 Department of Physics, Faculty of Science, Unité de Recherche de la Matière Condensée, d'Electronique et de Traitement du Signal, University of Dschang, Dschang, Cameroon.
3 Radiography Department, Yaoundé General Hospital, Yaoundé, Cameroon.
4 Department of Radiology, National Social Insurance Fund Hospital, Yaoundé, Cameroon.