my mother had undergone angiogram three years back.she took medicines for that.now she gets light  pain in the chest if she walks for a long time.so doctor has asked to go for angiogram again .so to know if the block is still there or progressed is  CT  angiogram BEST or the normal angio best.
Hello and thank you for using Chat Doctor. I carefully read your question and I understand your concern. I will try to explain and give you my opinion. As you describe your mother had previously done angiography and is under treatment. This means that she didn't have any serious artery stenosis at that time but only small plaque. But the situation changes in TRE years. If the chest pies has started than the situation must be verified again. The gold Standard to diagnose coronary artery disease is normal coronary angiography. Coronary Anglo ct is an examination that helps to exclude a coronary artery disease in atypical cases, but it has lower sensitivity for making full diagnosis. It only rises suspicion. If it finds a problem the definite diagnosis is only made by normal angiogram. So, if we already know that a plaque has been there, than the angiography is the gold standard for diagnosis. It might be possible that the plaque is bigger now, and it might need intervention, so again the only way is normal angiography. Hope I was helpful. Best regards, Chat Doctor.