Improvements in or relating to cardiac imaging

摘要

A method of assessing relative rates of blood flow in the coronary arteries which involves observing one or more flow parameters in respect of contrast agent-containing blood flowing in at least one coronary artery of a subject, by generating a sequence of ultrasound images of the heart in a plane at least substantially perpendicular to the cardiac axis. Ultrasound imaging techniques which may be employed include power Doppler imaging and second harmonic B-mode or power Doppler imaging.