1. To identify the literature on intravascular ultrasound (IVUS) for guiding coronary interventions, and to synthesise evidence about outcomes compared with outcomes when IVUS guidance has not been used.
2. To use this evidence, together with other information about costs and outcomes, to model the cost effectiveness of IVUS guidance.
3. To synthesise the evidence on the reproducibility of measurements of cross-sectional area made using IVUS.