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首页> 外文会议>Medical Imaging VI: Instrumentation >Comparison of imaging characteristics of multiple-beam equalization and storage phosphor direct digitizer radiographic systems
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Comparison of imaging characteristics of multiple-beam equalization and storage phosphor direct digitizer radiographic systems

机译：多光束均衡和存储荧光粉直接数字化仪射线照相系统成像特性比较

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Abstract: The imaging characteristics of two chest radiographic equipment, Advanced Multiple Beam Equalization Radiography (AMBER) and Konica Direct Digitizer $LB@using a storage phosphor (SP) plate$RB systems have been compared. The variables affecting image quality and the computer display/reading systems used are detailed. Utilizing specially designed wedge, geometric, and anthropomorphic phantoms, studies were conducted on: exposure and energy response of detectors; nodule detectability; different exposure techniques; various look-up tables (LUTs), gray scale displays and laser printers. Methods for scatter estimation and reduction were investigated. It is concluded that AMBER with screen-film and equalization techniques provides better nodule detectability than SP plates. However, SP plates have other advantages such as flexibility in the selection of exposure techniques, image processing features, and excellent sensitivity when combined with optimum reader operating modes. The equalization feature of AMBER provides better nodule detectability under the denser regions of the chest. Results of diagnostic accuracy are demonstrated with nodule detectability plots and analysis of images obtained with phantoms. !11
机译：摘要：比较了两种胸部放射线照相设备，即先进多光束均衡放射照相（AMBER）和柯尼卡直接数字化仪$ LB @使用荧光粉（SP）板$ RB系统的成像特性。详细介绍了影响图像质量的变量以及所使用的计算机显示/阅读系统。利用专门设计的楔形，几何和拟人幻像，进行了以下研究：探测器的曝光和能量响应；结节可检测性；不同的曝光技术；各种查找表（LUT），灰度显示和激光打印机。研究了散射估计和减少的方法。结论是，采用丝网膜和均衡技术的AMBER提供了比SP板更好的结核检测能力。但是，SP印版还具有其他优势，例如在选择曝光技术时具有灵活性，图像处理功能以及与最佳读取器操作模式结合使用时具有出色的灵敏度。 AMBER的均衡功能可在胸部较密的区域内提供更好的结节检测能力。通过结节可检测性图和对通过幻影获得的图像进行分析来证明诊断准确性的结果。 ！11

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