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數位式胸腔X光照相-雙系統之特性比較

A Characteristics Comparison between Two Systems in Digital Chest Radiography

摘要


本研究的主要目的是爲了建立胸腔X光照相系統的評估標準。應用Nuclear Associates公司生產的品質控制假體爲標準假體,將不同胸腔X光系統所拍攝影像的品質,利用訊雜比從事評比;並且藉由優值數(訊雜比平方除以有效劑量)作爲劑量與影像品質最佳化之評估。

並列摘要


This study aimed to establish an evaluation standard for digital chest X-ray radiography. The quality control phantom model 07-646 produced by Nuclear Associates Co. was used as a standard phantom. Chest images were acquired from two different digital chest X-ray radiographic systems. SNR (Signal to Noise Ratio) was extracted from the images to evaluate the image quality. FOM (Figure of Merit) defined as the square of SNR divided by the effective dose was applied as an index for dose-image quality optimization.

並列關鍵字

FPD SNR FOM effective dose

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