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KMID : 1164219950070010103
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Journal of Korean Society for Radiotherapeutic Technology
1995 Volume.7 No. 1 p.103 ~ p.110
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Kim Young-Bum
Chung Se-Young
Hwang Woong-Ku
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Abstract
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Dynamic wedge system has been introduced to modify the beam profile and to make homogeneous isodose curves in the mass of irregular shape. Before the clinical use of dynamic wedge, several factors such as wedge transmission factor, dose profile, percent depth dose, and wedge angle have to be measured quantitatively. Film dosimetry is used to evaluate these factors in this study. A comparison of the result of the dynamic wedge to physical wedge system is made. A positive result for the application of the dynamic wedge to clinic is derived even though there is a limitation in accuracy of the dosimetry system used. To measure all factors quantitatively, more accurate dosimetry systems are required.
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