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

Volume

2

fYear

1998

fDate

29 Oct-1 Nov 1998

Firstpage

730

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE

Conference_Location

Hong Kong

ISSN

1094-687X

Print_ISBN

0-7803-5164-9

Type

conf

DOI

10.1109/IEMBS.1998.745526

Filename

745526