Diagnostic imaging in 2001 - a health economics perspective.

Factors contributing to the growth and diffusion of new imaging technologies are discussed. The benefits derived from implementing and using new technologies are carefully evaluated against the associated costs to both patients and service providers. The need to invest in early scientific assessment of a new imaging technology in order to prevent wasted acquisition and utilisation later on is highlighted. Such assessment might involve evaluating the ability of the technology to improve diagnosis, positively impact on treatment plans and, above all, improve health.