Nature of tissue | Resting function | Low dose | Peak/post-stress function |
---|---|---|---|
CAD, coronary artery disease; WMA, wall motion abnormalities (severe hypokinesis, akinesis, dyskinesis). | |||
Normal | Normal | Normal | Hyperkinetic |
Ischaemic | Normal | Normal (may worsen with severe CAD) | Worse than rest |
Worse than adjacent segments | |||
Tardokinesis (delayed contraction) | |||
Viable, ischaemic | Rest WMA | Improvement at low dose | Reduction (compared with low dose) |
Viable, non-ischaemic | Rest WMA | Improvement at low dose | Sustained improvement |
Infarction | Rest WMA | No change | No change |