Abstract
The organ and effective doses computed with a new flexible programme were compared in four X ray examinations with the doses determined with LiF TL detectors in an Alderson-Rando phantom. The correlation between the two methods was rather good (within 25%) for most results of the comparisons (75% of 45 results), but rather poor (discrepancy up to 140%) for the low and high density organs (lung, bone). An upward trend was also obtained for the doses to colon and some other organs. The reasons for the discrepancies were thought to be due to the approximate density and attenuation corrections of the computer programme for bone and lung tissues.
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