TY - JOUR AU - Bangassi, Thierry Narcisse Kouagou AU - Samba, Odette Ngano AU - Thierens, Hubert AU - Njock, Moïse Godfroy Kwato PY - 2021/12/14 Y2 - 2024/03/29 TI - Evaluation of Eye Lens Dose Reduction Technics in Head CT JF - British Journal of Healthcare and Medical Research JA - BJHMR VL - 8 IS - 6 SE - Original Articles DO - 10.14738/jbemi.86.11218 UR - https://journals.scholarpublishing.org/index.php/JBEMi/article/view/11218 SP - 77-88 AB - <p><em>The purpose of this study is to find the best protocol to reduce the X-ray dose to the eye lens during head diagnostic computed tomography (CT) without decreasing image quality in the organs of interest according to</em> <em>the type of scanner. The lens of the eye is one of radiosensitive tissues in the body. Radiation induced cataract has been demonstrated among staff involved in interventional procedures using X-rays. This study compares the absorbed dose and image quality of several dose reduction technics to the eye lens during head CT exam namely bismuth shielding, organ-based dose modulation, tube current modulation, tube voltage modulation and the combination of a number of these techniques. Compared to the reference scan (Fixed tube current without bismuth shielding), the dose to the eye lens was reduced by 29.91% with bismuth shield, 14.55% with tube current modulation, 37.76% with tube current modulation and bismuth shield. The combination of organ-based dose modulation with tube voltage modulation reduced the dose by 44.93% that of tube current modulation with tube voltage modulation reduced by 19.03% and that of tube current modulation with tube voltage modulation and shield by 46.73%.</em></p><p><em>The combination of organ-based dose with tube voltage modulation provided superior image quality than that of tube current modulation with tube voltage modulation and shield while similarly reducing dose to the eye lens.</em></p> ER -