We developed a Tandem system using a pair of ionization chambers (a cylindrical and a parallel-plate type) to perform X-ray measurements in a medical Institution, in substitution of the routine conventional procedure of determination of half-values layers using absorbers. The results obtained indicate the possibility of application of this method in dosimetric procedures of orthovoltage beams (radiotherapy) as a complementary procedure in a quality control program.
Keywords: X-rays, Ionization chambers, Quality control
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