@article{whenfinetuningchangestheevidencearchitec,
  title = {When Fine-Tuning Changes the Evidence: Architecture-Dependent Semantic Drift in Chest X-Ray Explanations},
  author = {Kabilan Elangovan and Daniel Ting},
  year = {2026},
  eprint = {2604.08513},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2604.08513},
}