Simple level dosimetry for brachytherapy plans prescribed to surface or depth from catheter and library plans, if: (a) the planning process is required to deliver a prescribed dose to a three‑dimensional volume, and relative to a single line or multiple channel delivery applicator; and (b) the planning process does not require the differential of dose between the target, organs at risk and normal tissue dose; and (c) delineation of structures is not required; and (d) dose calculations are performed in reference to the surface or a point at depth (two‑dimensional plan) from tables, charts or data from a treatment planning system library plan