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http://dx.doi.org/10.5392/JKCA.2015.15.10.362

A Analysis of Effectiveness of Aluminium Filter in the added Compound Filtration by Detective Quantum Efficiency and Image Quality Evaluation  

Kim, Sang-Hyeon (서울대학교병원 영상의학과)
Kim, Yun-Min (삼성서울병원 영상의학과)
Kwon, Kyoung-Tae (동남보건대학교 방사선학과)
Ma, Sang-Chull (신한대학교 방사선학과)
Han, Dong-Gyoon (을지대학교 방사선학과)
Publication Information
The Journal of the Korea Contents Association / v.15, no.10, 2015 , pp. 362-373 More about this Journal
Abstract
This study analysed the effectiveness of aluminium(Al) filter in the added compound filtration for the removal of characteristic radiation from high atomic number material by DQE and image evaluation. 1mm Al was applied to each 0.1, 0.2, 0.3 mm copper and befere and after use were evaluated. Beam quality and DQE were tested by IEC regulations and image quality was evaluated by PSNR, MAE, MSE, CNR, SNR and qualitative analysis was performed by 7 items for resolution and contrast from chest x-ray criteria of national cancer checkup. MTF 10 and 50% were the same by 4.6, 2.54 cycle/mm and NPS, DQE, PSNR MAE, MSE, CNR, SNR and qualitative analysis were all the same or slightly better when Al was not used. PSNR is over 30dB and all significant and at the qualitative analysis, the p-value of t-test was over 0.05. The DQE and image quality evaluation have little difference between before and after use of Al filter and it is effective to use the Al filter for the reduction of skin dose by removal of characteristic radiation.
Keywords
Aluminium Filter; DQE; Image Evaluation; Characteristic Radiation; Skin Dose;
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Times Cited By KSCI : 7  (Citation Analysis)
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