Abstract Evaluation of image quality (IQ) in Computed Tomography (CT) is important to
ensure that diagnostic questions are correctly answered, whilst keeping radiation dose to …

The theory of task-based assessment of image quality is reviewed in the context of imaging
with ionizing radiation, and objective figures of merit (FOMs) for image quality are …

Image quality can be defined objectively in terms of the performance of some"
observer"(either a human or a mathematical model) for some task of practical interest. If the …

Many psychophysical studies of the ability of the human observer to detect a signal
superimposed upon a uniform background, where both the signal and the background are …

As photon-counting imaging systems become more complex, there is a trend toward
measuring more attributes of each individual event. In various imaging systems the attributes …

Research on human-observer performance for noise-limited tasks (such as those found in
medical imaging) has recently progressed to investigations in which some signal or image …

Figures of merit for image quality are derived on the basis of the performance of
mathematical observers on specific detection and estimation tasks. The tasks include …

We measured human observers' detectability of aperiodic signals in noise with two
components (white and low-pass Gaussian). The white-noise component ensured that the …

The knowledge of the relationship that links radiation dose and image quality is a
prerequisite to any optimization of medical diagnostic radiology. Image quality depends, on …

Image quality can be objectively defined according to how well an observer can perform a
task of practical interest given the image. We review a practical model observer for the signal …