Medical image computing and computer assisted intervention MICCAI 2023 Hayit Greenspan Anant Madabhushi Parvin Mousavi Septimiu Salcudean James Duncan Tanveer Syeda Mahmood Russell Taylor editors ; Part 1 The ten volume set LNCS 14220 14221 14222 14223 14224 14225 14226 14227 14228 and 14229 constitutes the refereed proceedings of the 26th International Conference on Medical Image Computing and Computer Assisted Intervention MICCAI 2023 which was held in Vancouver Canada in October 2023. The 730 revised full papers presented were carefully reviewed and selected from a total of 2250 submissions. The papers are organized in the following topical sections: Part I: Machine learning with limited supervision and machine learning transfer learning; Part II: Machine learning learning strategies; machine learning explainability bias and uncertainty; Part III: Machine learning explainability bias and uncertainty; image segmentation; Part IV: Image segmentation; Part V: Computer aided diagnosis; Part VI: Computer aided diagnosis; computational pathology; Part VII: Clinical applications abdomen; clinical applications breast; clinical applications cardiac; clinical applications dermatology; clinical applications fetal imaging; clinical applications lung; clinical applications musculoskeletal; clinical applications oncology; clinical applications ophthalmology; clinical applications vascular; Part VIII: Clinical applications neuroimaging; microscopy; Part IX: Image guided intervention surgical planning and data science; Part X: Image reconstruction and image registration