Title :
Analysis on testing of noise in radiography resulted from different screen-film systems
Author :
Feng, Shuli ; Zhang, Zhiguang ; Bai, Jing
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
fDate :
29 Oct-1 Nov 1998
Abstract :
The density fluctuations of 32 kinds of radiograph are developed from four kinds of film combined with different intensifying screens that are used very commonly in Chinese hospitals. The RMS (Root Mean Square), ACF (Auto-Correlation Function) and Wiener spectra of each radiograph are obtained. Results indicate that there are different density distributions with the different screen-film systems. The study may provide a basis for selection of film for clinical use and for filter design for digital radiography image processing
Keywords :
Wiener filters; correlation methods; diagnostic radiography; filtering theory; image intensifiers; image texture; medical image processing; Wiener spectra; auto-correlation function; density fluctuation; different screen-film systems; digital radiography image processing; filter design; image quality; intensifying screen; noise testing; radiograph noise; Autocorrelation; Covariance matrix; Fluctuations; Hospitals; Optical imaging; Radiography; Root mean square; System testing; Voltage; X-ray imaging;
Conference_Titel :
Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-5164-9
DOI :
10.1109/IEMBS.1998.745526
