Abstract:
This was descriptive study to evaluate of contrast media injection protocols in computed tomography on period from January to July 2020,in this study it was evaluate the difference between CT devices using in hospitals also correlated between manual and automatic injector, and it was studied influence of HU, flow rate , amount of CM by type of device configuration, and type of injector. Data was collected from six variables (age, gender, HU density, flow rate, amount of CM and configuration device), the samples collected from different five hospitals.
The results of this study show that Comparing of mean for HU density, flow rate and amount of CM among all devices configuration where HU was higher at 128 (315.4) slice and lower at 64 (200.5), the flow rate was higher at machines with 128 (4) and lower at 64 (3.21), while the Amount of CM was higher at 128 (100) and lower in 16 (69.6),correlate between mean of HU density, flow rate and amount of CM, the manual injector give HU, Flow rate, Amount of CM was 242.5, 3.22 and 74.8 respectively while the automatic injector give 201.2, 2.84 and 73.26 respectively.
While compare between number of configuration device with type of injector, for automatic and manual injector, where the automatic injector 44 patients from 16 slice and 30 from 128 slice, while the manual 16 patients from 16 slice and 10 from 64 slice. And proved to study the best device is the 128 configuration and also proved to outweigh the injector automated on manual and also influenced by the value of HU by amount contrast and the size of the patient’s . From the result the automatic injector reduce the radiation dose to the patient and this is ethical principle of radiation protection .
