Assessment of the Radiation Dose during 16 Slices CT Examinations
M.Mkimel1, R. El Baydaoui2, M. R. Mesradi Z.Tahiri3, E.Saad4, A.Hilali5
1Mkimel Mounir*, High Institute Of Health, Hassan 1st University, Settat Morocco.
2El Baydaoui Redouane, High Institute Of Health, Hassan 1st University, Settat Morocco.
3Mesradi Mohamed Reda, High Institute Of Health, Hassan 1st University, Settat, Morocco.
4El Madani Saad, High Institute Of Health, Hassan 1st University, Settat Morocco.
5El Hilali Abderaouf , High Institute Of Health, Hassan 1st University, Settat Morocco.
Manuscript received on November 12, 2019. | Revised Manuscript received on November 25, 2019. | Manuscript published on 30 November, 2019. | PP: 4652-4657 | Volume-8 Issue-4, November 2019. | Retrieval Number: D8388118419/2019©BEIESP | DOI: 10.35940/ijrte.D8388.118419
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In this work. Two studies were presented. The first one is an experimental study of the influence of different scan parameters (potential tube. current tube and pitch) on the radiation dose is presented. It has been demonstrated that the radiation dose increases if we increase the tube current or the potential current. Contrary to the pitch. the radiation dose is reduced when the pitch increases. The second study is a Monte Carlo validation of a CT named SOMATION emotion from Siemens using GATE. Results were carried out for different voltage 80.110.130 kV p. Results of the simulation are presented and good agreements are observed (less than 2.6% for head phantom. and less than 4.6% for body phantom for all applied voltages). The influence of changing the phantom diameter on the CTDI w was also presented. the CTDI w decreased nonlinearly with increasing the phantom diameter. Moreover. the CTDI w differences decreased if the phantom diameter increased. It was demonstrated that the CTDI100 values can be characterized as functions of the kVp. m As and diameter of phantoms. Based on these results. it is possible to optimize the CT parameters in clinical applications. Finally the effective dose was calculated using the method dose length product and the conversion factors for four clinical protocols.
Keywords: Ct, Ctd,. Gate, Somatom Emotion Ct, Potential Tube, Current Tube and Pitch.
Scope of the Article: Smart Learning and Innovative Education Systems.