Comparison of Indirect CsI/a:Si and Direct a: Se Digital Radiography. An assessment of contrast and detail visualization

Abstract

Image quality of a:Si flat panel digital radiography proved to be superior to a:Se drum digital radiography using low-dose settings. If the primary target is dose reduction indirect flat panel technology should be used.

Evaluation of chest and abdominal exposure dose appropriate for a digital image reader system incorporating a columnar-crystal structured phosphor plate and a contrast-detail phantom

“…We therefore conducted a study to determine the chest and abdominal exposure conditions appropriate for making effective clinical use of the DI. As a means of evaluating such conditions, we referred to published results of assessments of chest exposure conditions as studied on different types of digital equipment through the use of a contrast-detail (C-D) phantom [3][4][5][6][7]. Using such evaluation methods and the chest and abdominal exposure conditions obtained on the conventional CR as a guide, we determined chest and abdominal exposure doses appropriate for the DI by studying the image-processed phantom images.…”

An Update on Diagnostic Imaging Techniques in Veterinary Practice

“…This exposure leads to development of charge pattern on the drum surface proportional to X-rays which is recorded by analog to digital convertor during rotation. Advantage of these systems is that they provide good quality images compared to those provided by screen-film or CR systems (Neitzel et al, 1994;Bernhardt et al, 1999;Veldkamp et al, 2006;Kroft et al, 2005;Fischbach et al, 2003;Ramli et al, 2005). Also the flat panel detectors can be used for mammography in humans (Zhao et al, 2003 …”

Advances in Digital Radiography: Physical Principles and System Overview

“…During exposure, a charge pattern proportional to that of the incident x-rays is generated on the drum surface and is recorded during rotation by an analogto-digital converter (Fig 4a) (30). Several clinical studies have confirmed that selenium drum detectors provide good image quality that is superior to that provided by screen-film or CR systems (4,13,16,17,31,32). However, because of their mechanical design, selenium drum detectors are dedicated thorax stand systems with no mobility at all.…”

“…Studies comparing indirect conversion flat-panel detectors with conventional screen-film combinations (18,21,22, 25,28,45,48 -51), storage-phosphor image plates (17,18,20 -27,29,52), or other digital detectors (16,17,31,37) have verified that flat-panel detectors offer the best image quality and low-contrast performance of all digital detectors and, so far, are superior to conventional screen-film combinations.…”