In this study, we considered the precision and characteristics of the transparent
detector. Bottom of the many non-invasive type instruments detector is covered by a lead,
measurements do not include X-ray scattering. Recently, transparent detector have been developed
as a non-invasive type instruments Xi( Raysafes) option, can be performed dose
evalutaion that includes X-ray scattering. We used X-ray equipment, conducting in-air, above-
Poly methyl methacrylate( PMMA) phantom, internal-PMMA phantom and Auto Exposure
Control( AEC) receptor internal measurements for transparent detector :TD, ionization
chamber( 9015) and non-invasive type instruments( R/F). For air kerma measured by the
TD, The TD has an upper dose limit, but error of the TD between the 9015 and the R/F was
within ±3% , showing good correlation with each device.For above-PMMA dose measured
by the TD, there was a trend towards larger error for lower tube voltage, but error was within
±5% when above 70 kV. For internal-PMMA and internal-AEC receptor dose measured by
the TD, when compared to dose of the R/F, it was possible to include X-ray scattering in dose
evaluation. As the TD is transparent type, there is little effect during AEC operation on dose
volume, and entrance surface dose( ESD) inclusive of X-ray scattering is possible. This
should be effective for X-ray equipment quality control.
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