I was just hearing about this recently, I looked into it and did find they were finding seven and 7+, Not sure whether 7+ is a 4+3 or somewhere above a 3+4.

As for the technical answer

Prostate MRI and Gleason Score Prediction: Multiparametric prostate MRI (MP-MRI) combined with factors like PSA density can predict biopsy Gleason scores with reasonable accuracy pre-biopsy. For example, models using MRI findings and PSA density showed high correlation with biopsy Gleason scores in research studies

They do expect technology like this to replace the biopsy.