In the case of computed tomography (CT) scan, the measurement of effective dose is very essential. A patient size-dependent factor will be used to estimate patient dose from scanner output indices (e.g. Computed tomography dose index, CTDIvol) for patients of different sizes. The size dependent factor shall be used over a range of patient sizes, and extends to large patients as well as small patients.This research performed the estimation of effective dose during CT scan of brain of patients by using PMMA 32 cm reference phantom for treatment planning. The effective dose has been calculated...

The experiment was carried out in the Institute of Nuclear Medicine and Allied Sciences, Rajshahi, Bangladesh, using gamma camera "Seamence" and the radioisotope 99mTc-DTPA. To study the variation of kidney counts, uptake and Glomerular filtration rate with renal split function, 27 patient's renogram data were taken. The renal split function were linearly influenced kidney counts (CPM), uptake (%) of 99mTC-DTPA and glomerular filtration rate (GFR). The glomerular filtration rate (GFR) was linearly increased with renal split function but decreased with patient's age. Majority patients had...