Abstract:
I pay my thanks for help, support and encouragement, to God firstly, Who
blessed me in each stepSpecial. and great thanks to my supervisor Dr. Salah
Ali Fadllalh who kept on pushing, guiding, advising and supervising till the
end of my research.
To all nuclear medicine technologists in Fedil Specialized Hospital Who
helped me in collecting my data, and to everyone who helped me in
presenting my research in its last form.
Last but not leastto every sweet person who assisted and helped me by words,
deeds and even thoughts,especially my friends and colleagues