The digital filtered image had the highest sensitivity. The highest specificity was attributed to D-speed films. Indirect digital images of scanned D-speed and E-speed films and direct standard and filtered digital images (CMOS receptor) have high specificity and there is no significant difference ...
There are a number of methods for producing images with neutrons including: (1) direct and indirect radiography using activation foils and X-ray film [15]; (2) digital radiography using image storage plates and a scanner [16]; (3) real-time scintillating screens with a Charge-coupled device...
Flat-panel detector (FPD) digital radiography systems have direct and indirect conversion systems, and the 2 conversion systems provide different imaging performances. We measured some imaging performances [input-output characteristic, presampled modulation transfer function (presampled MTF), noise power sp...
Metal-halide perovskites are revolutionizing the world of X-ray detectors, due to the development of sensitive, fast, and cost-effective devices. Self-powered operation, ensuring portability and low power consumption, has also been recently demonstrated in both bulk materials and thin films. However,...
Image qualityIndirect digital radiographyMobile radiographyNursing homesINTRODUCTION :A hospital environment can be a significant burden and a health risk ... HPAB C,DLHD E,RPA F,... - 《Radiography》 被引量: 0发表: 2020年 加载更多来源
There is actually a Level 0 scenario which consists in "easier" indirect methods such as detecting hydrogen and quantifying its amount. This can be done for example using simple neutron backscatter techniques (Annex A2.1). Similarly, a simple TNA system is also available for the assessment of ...
Comparison of image quality in chest, hip and pelvis examinations between mobile equipment in nursing homes and static indirect radiography equipment in th... INTRODUCTION :A hospital environment can be a significant burden and a health risk especially for dementia patients. Mobile x-ray equipment (...
2) direct and indirect conversion digita l radiography 直接和间接转换DR 3) direct conversion 直接转换 1. To analyze reasons of discarding as useless of α-Sedirect conversiondigital flat panel detector; 直接转换非晶硒平板探测器报废原因分析
与传统的直接转换法相比,本方法具有精度高、计算量小、结构简单的特点,而且可以求解最优控制"多相"问题。4) direct translator 直接转换器5) direct-conversion plant 直接转换站6) direct and indirect conversion 直接转换和间接转换补充资料:可转换证券的转换价值 可转换证券的转换价值—— 如果一种可转换证券...
2,8,10 Other indirect signs are less useful. The sensitivity of chest radiographs for detecting aortic injuries may be as high as 90% but the specificity is extremely low, approximately 5%.1,5 Therefore, the threshold for obtaining a chest CTA after an abnormal or nonconclusive radiograph ...