Fine-tuned lightweight language models for structured extraction of liver cancer imaging free-text report: a comparative analysis with existing large language models. - Yang-Di Luo; Yong Sun; Shi-Le Tang; Lu-Jun Shen; Xuxiazi Zou; Hong-Liang Zou; Hua-Lin Shen; Tong-Tong Yang; Jia-Yun Wu; Rong-Yu Lu; Chao-Feng Li; Jin-Hua Huang; et al. (BMC Medical Imaging, 2026)