Share Email Print

Proceedings Paper

Comparison of imaging characteristics of multiple-beam equalization and storage phosphor direct digitizer radiographic systems
Author(s): A. Sankaran; Keh-Shih Chuang; Hisashi Yonekawa; H. K. Huang
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

The imaging characteristics of two chest radiographic equipment, Advanced Multiple Beam Equalization Radiography (AMBER) and Konica Direct Digitizer [using a storage phosphor (SP) plate] 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.

Paper Details

Date Published: 1 June 1992
PDF: 12 pages
Proc. SPIE 1651, Medical Imaging VI: Instrumentation, (1 June 1992); doi: 10.1117/12.59392
Show Author Affiliations
A. Sankaran, UCLA School of Medicine (United States)
Keh-Shih Chuang, UCLA School of Medicine (United States)
Hisashi Yonekawa, UCLA School of Medicine (United States)
H. K. Huang, UCLA School of Medicine (United States)

Published in SPIE Proceedings Vol. 1651:
Medical Imaging VI: Instrumentation
Rodney Shaw, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?