电子设计工程
電子設計工程
전자설계공정
ELECTRONIC DESIGN ENGINEERING
2014年
21期
142-144,148
,共4页
孙恺欣%陈欣%丁国清%颜国正
孫愷訢%陳訢%丁國清%顏國正
손개흔%진흔%정국청%안국정
计算机X射线影像%CR%图像质量%空间分辨率%DQE%噪声
計算機X射線影像%CR%圖像質量%空間分辨率%DQE%譟聲
계산궤X사선영상%CR%도상질량%공간분변솔%DQE%조성
computed radiography%CR%image quality%spatial resolution%DQE%noise
针对计算机X射线影像(CR)扫描仪研发过程中对图像质量评价的需要,对CR图像质量原理进行了研究和归纳,并总结了一套测试方法。测试方法涵盖了CR图像质量中最常用的几个指标:空间分辨率、对比度分辨率、空间精度、图像噪声、CNR、量子探测效率(DQE)、MTF、伪影和擦除率等。根据这套测试方法对某CR原型机进行了验证,满足了设计和制作过程中对图像质量评价的需要。
針對計算機X射線影像(CR)掃描儀研髮過程中對圖像質量評價的需要,對CR圖像質量原理進行瞭研究和歸納,併總結瞭一套測試方法。測試方法涵蓋瞭CR圖像質量中最常用的幾箇指標:空間分辨率、對比度分辨率、空間精度、圖像譟聲、CNR、量子探測效率(DQE)、MTF、偽影和抆除率等。根據這套測試方法對某CR原型機進行瞭驗證,滿足瞭設計和製作過程中對圖像質量評價的需要。
침대계산궤X사선영상(CR)소묘의연발과정중대도상질량평개적수요,대CR도상질량원리진행료연구화귀납,병총결료일투측시방법。측시방법함개료CR도상질량중최상용적궤개지표:공간분변솔、대비도분변솔、공간정도、도상조성、CNR、양자탐측효솔(DQE)、MTF、위영화찰제솔등。근거저투측시방법대모CR원형궤진행료험증,만족료설계화제작과정중대도상질량평개적수요。
Image quality (IQ) evaluation process is required for the development of computed radiography (CR) scanner. The theory of CR image quality was studied and a set of test methods were made. The CR test method covers the most commonly used image quality indicators:spatial resolution, contrast resolution, spatial accuracy, image noise, CNR, detective quantum efficiency (DQE), MTF, artifacts and erasing rate. A CR enginnering model was validated based on this test method. The test method meets the requirement of IQ evaluation for design and production process.