ControlNet-Assisted Inpainting for Medical Image Augmentation Using Stable Diffusion Models Pavarut SRISOPITSAWAT*1, Takashi OBI*2, Joong-Sun LEE*2, 3, Hajime TANAKA*4, Yoh MATSUOKA*5, Yasuhisa FUJI*4 *1 Department of Information and Communications Engineering, Institute of Science Tokyo *2 Research Institute of Integrated Research for Aggregation of Social and Individual Sustainability, Institute of Science Tokyo *3 Software Engineering Department, Catholic Kwandong University, Korea *4 Department of Urology, Institute of Science Tokyo *5 Department of Urology, Saitama Cancer Center