What daily/weekly imaging (MV/KV/CBCT) do you use when treating regional nodes in breast cancer?

We primarily treat regional nodes using 3DCRT. As such, we check weekly ports of all films (tangents, SCV +/- PAB). We have concurrent surface imaging which is used daily.

When using IMRT (uncommon in my practice, < 10% of cases requiring RNI), I use CBCT with alignment to chest wall (IMNs).