Strokes able to be detected with this medical process (3,4)

I believe the answer is:

pet scan

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'be detected with this medical process' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'strokes able' is the wordplay.
'strokes' becomes 'pets' (I've seen this in another clue).
'able' becomes 'can'.
'pets'+'can'='PET SCAN'

'to' acts as a link.

Can you help me to learn more?

I've seen this clue in The Irish Times.

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