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  5. Usefulness of heavy metal filters for the improvement of image contrast and reduction of patient dos

Usefulness of heavy metal filters for the improvement of image contrast and reduction of patient dos

来源 :2013中华医学会影像技术分会第21次全国学术大会暨国际影像技术论坛 | 被引量 : 0次 | 上传用户：mummu1025
【摘 要】
：
Several studies have shown that heavy metal filters with K edges in a diagnostic energy range reduced patientradiation dose without degrading image quality.However, increased exposure time was a probl
【作 者】
：
Katsuhiko Ueda Yuki Fujimoto Masahiro Koike Shingo Morita Shohei Kudomi Yona Ohishi Hideyuki Iwanaga 
【机 构】
：
Department of Radiological Technology,Yamaguchi University Hospital, Yamaguchi, Japan
【出 处】
：
2013中华医学会影像技术分会第21次全国学术大会暨国际影像技术论坛
【发表日期】
：
2013年4期
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Several studies have shown that heavy metal filters with K edges in a diagnostic energy range reduced patientradiation dose without degrading image quality.However, increased exposure time was a problem to apply heavy metal filters in screen-film system or computed radiography.Due to the higher sensitivity of cesium iodine (CsI) based flat panel detectors (FPD), we assumed that FPD systems had a potential to suppress the exposure time as an acceptable level in clinical use.The purpose of this study was to investigate the feasibility of heavy metal filters in CsI based FPD systems by measuring the image contrast and patient radiation dose in a phantom study.
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