Al Mejrad, Development of Medical C-Scan Ultrasound Systems, , 5 July 1994.
Al Mejrad, Structure of Medical Devices used for Therapeutic & Monitoring Purposes, Taif, S.A., 13 Oct. 1997.
Al Mejrad, A Proposal of a Management Structure of Medical Devices Used for Clinical Purposes in Saudi Hospitals, Third Administrative Symposium, Taif, S.A., 12-14 Oct. 1997.
Al Mejrad, Development of a new program in biomedical instrumentation technology in technology colleges in , Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE, 25-28 Oct. 2001, pp: 4011 - 4012 vol.4 .
Ali Saad, Ali El Zaart and Ali Al-Mejrad, Speckle Reduction in Digital Ultrasound Images by Multi-Resolution Contrast Enhancement International Conference on Biomedical Engineering 2004, IFMBE, BioMed 2004, Kuala Lumpur, Malaysia, September 2-4, 2004.
Ali El Zaart, Ali Al-Mejrad and Ali Saad, Segmentation of Mammography Images for Breast Cancer Detection. International Conference on Biomedical Engineering 2004, IFMBE BioMed 2004, , September 2-4, 2004.
Echo-Scan Non-invasive Applications, , 5 April. 1992.
Third Adminstrative Symposium, Taif, S,.A. , 12-14 Oct. 1997.
31st Annual Meeting for British Medical Ultrasound Society, , 8-10-Dec. 1999.
Biomedical Imaging IV, 4th IEEE ISSBI, , 17-24 June 2000.
The 3rd Symposium on Scientific Research and Technological Development Outlook in the Arab World, KSU, , 11-14 April 2004.
Training Course on Biomedical Engineering, of , K.L., , 1-10 Sept. 2004.
Workshop on Six Sigma- GE Medical & Healthcare Systems, , 29 Mar. 2005.
Workshop on Medical Philips Systems, , 20 April 2005
Arab Health Exhibition and Congress, UAE, 22-25 Jan. 2006.
Workshop on Nanotechnology & Applications, KACST, , 29-31 Jan. 2006.
NI Workshop – Lebanon 2007.
The 1st International Medical Exhibition, , 3-6 June 2007.
Nanotechnologies Research in Universities in , KSU, , 28-29 Oct. 2007.