ABSTRACT Evaluating the hazards and beneficiary of chest - CT imaging for patients COVID-19 Subjects Methods: A total number 160 suspected Covid-19 were classified into four groups (GP1(n=40) ,GP2(n=40) GP3(n=40)). The undergoing examination (Toshiba, Activion 16) .The acquisition protocols different as follows: GP 1 ((n=40), 100 Kv , ±15 mAs GP2 ((n=40) 120 150 ±20 mAs) GP3((n=40) Sure Exposur...

Possible strategies to reduce radiation dose during CT scanning have been investigated over recent decades; here the optimization of tube current and its link with patient’s cancer incidence are being evaluated. 154 consecutive trauma patients need for chest scan were included. Two different BMI-adjusted protocols at a fixed voltage same length applied. Dose estimation parameters like index (CT...

Introduction: The CT machine utilizes a bowtie filter to shape the X-ray beam and remove lower energy photons. Configuration of this bowtie filter is complex and its geometry is often not available in detail. It causes the CT dose index (CTDI) be with the different values in measurement versus Monte Carlo simulation studies and other analytical calculations. It is important esp...