Chapters authored
Radiation Doses and Risk Assessment during Computed Tomography of the Chest in COVID-19 Patients
Accounting for the effective dose (ED, mSv) and calculating the radiation risk during CT is necessary to predict the long-term consequences of radiation exposure on the population. We analyzed the results of 1003 CT examinations of the chest in patients with suspected COVID-19 in the city diagnostic center. The average ED and confidence intervals (p ≤ 0.05) for patients with a single CT scan were: children (12–14 years) 2.59 ± 0.19 mSv, adolescents (15–19 years) 3.23 ± 0.17 mSv, adults (20–64 years), 3.43 ± 0.08 mSv, older persons (65 years and older) 3.28 ± 0.19 mSv. The maximum radiation risk values were 31.2*10–5 in women children and 29.3*10–5 in women adolescents, which exceeds the risk values for men in these age groups by 2.3 and 1.9 times, respectively. For the group of adult patients the risk was 11.2*10–5 in men and 17.4*10–5 in women, which is 1.6 times higher than in men. All these risk values are in the range of 10*10–5–100*10–5, which corresponds to the level LOW. For the group of older age patients, the radiation risk was 2.6*10–5, which corresponds to the level of 1*10–5–10*10–5, VERY LOW. Our materials shows in detail the technique to evaluate effective radiation doses for chest CT and calculate the radiation risk of the carcinogenic effects of this exposure.
Part of the book: Computed-Tomography (CT) Scan