Away from the Mouse H&E quantification, the current version of MarrowQuant was tested on a small set of H&E bone marrow biopsies from anonymised patients. The tool performs in a comparable way as compared to the gold standard (Pathologists’ scorings), but it needs many optimisations before validating at the level of the human bone marrow biopsies quantifications and in clinical context.

We report the development of a semi-automated image analysis plug-in, MarrowQuant, which employs the open-source software QuPath, to systematically quantify multiple bone components in H&E sections in an unbiased manner. MarrowQuant discerns and quantifies the areas occupied by bone, adipocyte ghosts, hematopoietic cells and the interstitial/microvascular compartment. A separate feature, AdipoQuant, fragments adipocyte ghosts in H&E-stained sections of extramedullary adipose tissue sections to render adipocyte area and size distribution. Quantification of BM hematopoietic cellularity with...