Journal of Medical Physics
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Year : 2000  |  Volume : 25  |  Issue : 4  |  Page : 256-262

Skin Entrance And Organ Doses From Medical X-Ray Examinations



Correspondence Address:
G Ramakrishnan


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This paper presents results of skin entrance and organ dose measurements from routine medical x-ray examinations. The doses were measured in 1,452 patients undergoing 20 common X-ray investigations on 9 X-ray machines. CaSO4:Dy thermo luminescent dosimeters were used for dose measurements. The organ doses were estimated using tissue air ratios obtained using Monte Carlo methods by another worker. The highest mean dose of 16.69 mSv was measured for LS spine lateral projection and lowest of 0.15 mSv was for extremities. In the most commonly used chest\PA investigation, the mean skin entrance dose was 0.21 mSv. The ovary doses were significant for abdomen and LS spine investigations.


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