Conversation: The conversation between human and AI assistant.
[|Human|] my husband had a thallium treadmill...results show a "spot" on the left ventrical...he is now scheduled for a heart cath..the spot?  exactly what is this indicating?  He has a long hx of heart disease, DM, pacemaker...at 60 WM...his 2st MI was at age 36...
[|AI|]  Hello the spot on thallium perfusion scan may indicate two things, an old infarct which may have been a result of the previous myocardial infarction he had. However, considering he has been planned for and path study, it probably would mean that it is secondary to active ischemia (a decreased supply to that area of the heart) . A thallium is able to differentiate between the two and do provide a more detailed report for helping you with the differentiation. Regards Chat Doctor.