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Table 1 (A) k-Factors in various tissues. (B) Calculation of effective dose in each exam

From: Multi-detector computed tomography in traumatic abdominal lesions: value and radiation control

(A)
Region of Body 0 1 years old 5 years old 10 years old Adult
Head and Neck 0.013 0.0085 0.0057 0.0042 0.0031
Head 0.011 0.0067 0.0040 0.0032 0.0021
Neck 0.017 0.012 0.011 0.0079 0.0059
Chest 0.039 0.026 0.018 0.013 0.014
Abdomen and Pelvis 0.049 0.030 0.020 0.015 0.015
Trunk 0.044 0.028 0.019 0.0 14 0.015
(B)
Conversion of total DLP to effective dose
Patient age Type of exam Total DLP (mgy/cm) Effective dose (msv)
5 years Monophasic 82.4 1.6
9 years Monophasic 119 2.4
17 years Triphasic 347 5.2
17 years Biphasic 327 4.9
18 years Biphasic 308.3 4.6
20 years Triphasic 692.9 10.4
25 years Triphasic 668 10.02
25 years Triphasic 666 10
27 years Biphasic + enema 1350 20.3
34 years Triphasic 855 12.8
42 years Biphasic 439.6 6.6
53 years Triphasic 1103 16.6
  1. NB. Table 1B shows representative group of our patients, conversion of Total DLP to Effective dose, through multiplication by K-factors tissue weighting considering age (according to Table 1A)