However if in doubt other methods can be employed such as cardiac
MRI, MUGA
scan, ventriculography, and a CT
scan. Of these ventriculography is the gold standard for ejection fraction calculation.
Please consult your cardiologist and discuss whether the EF can be measured by some other method. Also certain medications too help improve cardiac function. Discuss all possibilities. If nothing helps then defibrillators and pacemakers help. Hope this helps. Take care!