Estimate of effective dose for adult patients from nuclear medicine examinations in Sudan Evaluation of uptake values of FDG: Body surface area Vs. body weight correction Estimation of Myocardial Perfusion in SPECT Scintigraphy using Quantitative Analysis Characterization of Hepatobiliary scintigraphy using Quantitative Analysis Evaluation The Time Between Chemotherapy Dose and Bone Scan for Breast Cancer Characterization of Hepatobiliary Scintigraphy using Linear Equations