A scan can confirm dementia, if there is evidence of platelets ( alzeimers), Lewy bodies ( Lewy body dementia ) and some other types of dementia that can show physical neurological damage
BUT, seeing no evidence is not a definitive diagnosis that someone doesn’t have that dementia. Just there is no evidence visible on the scan, but person may still have a form of dementia
They need to rule out a number of other things as well, but I assume they’ve done his? They must rule out delerium , even low level infections like UTIs not completely clearing up. ( imhe we only knew this due to increased incontinence that thy covered up). They should also be asking about sleep - chronic sleep deprivation can cause memory issues- and that’s not uncommon with age. And then there’s depression- being carer for her husband for years can be isolating and limiting- 50% of people who care for someone long term get mental health issues . So a lot of stuff to also look at ….and for family to ensure they talk with parent carefully, to see if any evidence of these things.
memory clinic may indicate clearly she has memory/cognative issues- but the causes can be many…it’s not just dementia that causes cognative issues.
my dad had LBD. He had scan 18 months before he died..all came back as “ normal”. Even though he was showing pretty classic LBD symptoms, they still only were able to say “ mixed dementia” even on his death certificate. It took 10 months to get even that “probably dementia” assessment- even though he was by then under a mental health section in mental hospital, and DOL.
but it is worth pushing for them to confirm if they think it’s, on balance, dementia, by eliminating other stuff. Dad was given one of newer drugs that was like an “ awakening” for him. Gave him 3 months of more lucidity, calmness etc so he could be transferred to a nicer care home for a while. These drugs are in very early stages of use, but can make a difference in terms of keeping someone at home a little longer., or in care but with more stability and less distress.
sorry, but others are right. It’s not a black or white result with scans. You’re more likely to be dealing with vagueness and “ probablys”.