Helium ion microscopy, image analysis, machine learning, nanoparticles, segmentation, toxicology Keywords: helium ion microscopy; image analysis; machine learning; nanoparticles; segmentation; toxicology EN helium ion microscopy image analysis machine learning nanoparticles segmentation toxicology 1 1 1 07/16/21 20210701 NES 210701 In article number 2100223, Mill and co-workers demonstrated a novel methodology that tackles the data annotation problem for the deep learning-based segmentation of complex nanoparticle agglomerates in helium ion microscopy images. [Extracted from the article]