Journal Abbreviation : ' j. Korea Saf. Manag. Sci.' Frequency : Quarterly Doi Prefix : 10.12812/ksms ISSN : 1229-6783 (Print) / 2288-1484 (Online) Year of Launching : 1999 Publisher : Korea Safety Management & Science Indexed/Tracked/Covered By :
*Dept. of Radiatioin Oncology, Konyang University Hospital **Dept. of Diagnostic Radiology, Konyang University Hospital ***Dept. of Radiology, Konyang University ****Dept. of Nuclear Medicine, Konyang University Hospital
†Corresponding Author: Se-Jong Yoo, The Department Diagnostic Radiology, Konyang University Hospital 685, Gasuwondong Seo-gu, Metropolitan city Daejeon, Korea M․P: 010-3431-5561, E-mail: yysj016@hanmail.net
July 15, 2014
December 18, 2014
December 18, 2014
Abstract
Beam quality is changed about magnetic field of bending magnet. Evaluation of beam quality using PDD(Percentage Depth Dose) at 10cm depth at recommendation of AAPM(America Academy of Pain Medicine). However this evaluation shows fragmentary element. Therefore this study is applied to three value, 10cm divided by 5cm depth PDD, 20cm divided by 10cm depth PDD, 30cm divided by 20cm depth PDD, at change the magnetic field. PDD is measured at magnetic field changed ±1%, ±2% at 6MV(Mega Voltage), 10MV photon. The plan technique is 3 portal plan using Core-Plan at human pelvic phantom. Conventional and presented methods are compared at maximum and minimum dose. The presented method increased discernment of relieve the unequal distribution and energy area than conventional method. Henceforth, application of presented method will be considered. Development of energy measurement method and detector miniaturization will be needed about continuous study.