Methods, apparatus, and systems for medical procedures are disclosed herein and include applying an ablation electrode of a catheter to a surface of a tissue area, providing a first energy to the ablation electrode applied on the surface of the tissue area to ablate the tissue area, inserting a catheter needle of the catheter to a first distance into the tissue area, through the surface of the tissue area, depositing, via the catheter needle, a first radioactive seed at the first distance, and damaging a second portion of the tissue area based on depositing the first radioactive seed at the first distance.