-Dr. Safaa Osman Mohamed(MD).Consultant Obstetrician and Gynecologist(OBGYN).University of Khartoum(U of K).Faculty of Medicine.Khartoum,Sudan.M.Sc.Medical Diagnostic Ultrasound.Alzaeim Alazhari University(AAU).College of Radiology and Medical Imaging. Khartoum, Sudan.-Dr.Abdelmoneim Adam Sulieman(Ph.D). Doctor of Philosophy,Medical Physics,Medical School, University of Thessaly Greece.Associate Professor of Medical Physics.Sudan University of Science and Technology(SUST).College of Medical Radiological Sciences.Head of Basic Sciences Department.Coordinator of Medical Physics Graduate Program.P.O.Box 1908, Khartoum,Sudan.-Dr. Mustafa Zuhair Mahmoud Alhassen(Ph.D).Doctor of Philosophy,Medical Diagnostic Ultrasound,College of Graduated Studies,Sudan University of Science and Technology.Doctor of Philosophy,Medical Diagnostic Ultrasound,L.U.de.S.University,Lugano-Switzerland. Assistant Professor of Medical Diagnostic Ultrasound. Prince Salman Bin Abdulaziz University.College of Applied Medical Sciences.Radiology and Medical Imaging Department. P.O.Box 422,Alkharj,Saudi Arabia.