Magnus Båth

TL;DR: The area under the VGC curve is proposed as a single measure of the difference in image quality between two compared modalities and it is described how VGC analysis can be applied to data from an absolute visual grading analysis study.

TL;DR: For the detection of pulmonary nodules, the performance of chest tomosynthesis is better, with increased sensitivity especially for nodules smaller than 9 mm, than that of chest radiography.

TL;DR: A software tool-ViewDEX (Viewer for Digital Evaluation of X-ray images)-has been developed in Java, enabling it to function on almost any computer, designed to handle several types of studies, such as visual grading analysis (VGA), image criteria scoring (ICS) and receiver operating characteristics (ROC).

TL;DR: An evaluation of the efficiency of ViewDEX for receiver operating characteristic (ROC) studies, free-response ROC studies and visual grading (VG) studies was conducted and it was found that the software is an efficient and easy-to-use software for observer performance studies.

TL;DR: The results show that clinical performance cannot be predicted from determinations of D QE alone, and that a system with lower DQE, under the quantum-saturated conditions in chest radiography, can outperform a system in terms of imaging properties if the image processing used on the former is more effective in presenting the information in the image to the radiologist.