Study on Image Quality of Computed Radiography

作     者：Gede Bayu Suparta Nugroho Waskito Lestari Sri 

作者机构：Department of Physics Faculty of Mathematics and Natural Sciences Gadjah Mada University Yogyakarta 55281 Indonesia 

出 版 物：《材料科学与工程（中英文版）》 (Journal of Materials Science and Engineering)

年 卷 期：2010年第4卷第4期

页      面：54-59页

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 1004[医学-公共卫生与预防医学(可授医学、理学学位)] 08[工学] 0835[工学-软件工程] 081202[工学-计算机软件与理论] 0812[工学-计算机科学与技术（可授工学、理学学位）] 10[医学] 

主　　题：计算机X线摄影 图像质量 辐射剂量 优化设置 灯丝电流 阴极电压 X光图像 基础 

摘      要：This study examined the image quality on Computed Radiography (CR) in conjunction with the proper radiation dose as indicated based on the set-up on the anode-cathode voltage (V) and filament current (i). During this study, a set of radiographic images of step wedge for various combinations of V and i was developed. The results showed that good image quality may be achieved by considering the effective V and i set up. Increasing V had a better effect to the image quality rather than increasing i. The X-ray power set-up of 2.5-4.0 kW with voltage 50 kV-80 kV and current of 50 mA may be chosen depends on the targeted aluminum thickness equivalent to obtain good image quality at the acceptable low radiation dose. Optimization set-up based on aluminum (Al) thickness equivalent may lead to significant reduction on the radiation dose and power consumption.