TY - JOUR
T1 - Estimation of adult patient doses for common diagnostic X-ray examinations in Wad-madani, Sudan
T2 - Derivation of local diagnostic reference levels
AU - Suliman, I. I.
AU - Mohammedzein, T. S.
PY - 2014/6
Y1 - 2014/6
N2 - The objectives of this study were to estimate patient dose in some common diagnostic X-ray examinations. Radiation doses were estimated for 307 patients in six public hospitals comprising 7 X-ray units in Wad-madani, Sudan. Entrance surface air kerma (ESAK) was estimated in a three step protocol: First, X-ray unit output Y(d) was measured at a distance, d for different peak tube voltages and tube loadings (mAs). Next, incident air kerma (Ki) was calculated from Y(d) using inverse square law combined with patient exposure factors. ESAK was calculated from Ki using backscatter factor, B. Mean ESAK values are comparable to those reported in other countries and are below reference dose levels. The estimated mean ESAK values are: 0.3, 2.2, 2.2, 2.9, 2.8, 3.1, and 7.5 mGy for chest PA, Skull AP/PA, Skull LAT, Abdomen, Pelvis AP, Lumbar Spine AP and Lumbar Spine LAT examinations, respectively. The results are used for dose optimization, and to propose local diagnostic reference levels.
AB - The objectives of this study were to estimate patient dose in some common diagnostic X-ray examinations. Radiation doses were estimated for 307 patients in six public hospitals comprising 7 X-ray units in Wad-madani, Sudan. Entrance surface air kerma (ESAK) was estimated in a three step protocol: First, X-ray unit output Y(d) was measured at a distance, d for different peak tube voltages and tube loadings (mAs). Next, incident air kerma (Ki) was calculated from Y(d) using inverse square law combined with patient exposure factors. ESAK was calculated from Ki using backscatter factor, B. Mean ESAK values are comparable to those reported in other countries and are below reference dose levels. The estimated mean ESAK values are: 0.3, 2.2, 2.2, 2.9, 2.8, 3.1, and 7.5 mGy for chest PA, Skull AP/PA, Skull LAT, Abdomen, Pelvis AP, Lumbar Spine AP and Lumbar Spine LAT examinations, respectively. The results are used for dose optimization, and to propose local diagnostic reference levels.
KW - Entrance surface air kerma (ESAK)
KW - Local diagnostic reference levels
KW - Patient dosimetry
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U2 - 10.1007/s13246-014-0255-z
DO - 10.1007/s13246-014-0255-z
M3 - Article
C2 - 24584663
AN - SCOPUS:84902386833
SN - 0158-9938
VL - 37
SP - 425
EP - 429
JO - Australasian Physical and Engineering Sciences in Medicine
JF - Australasian Physical and Engineering Sciences in Medicine
IS - 2
ER -