Incorporating morphology via deep learning improves classification performance of MALDI imaging for skin lesions

This presentation addressed how combined analysis of mass spectrometry imaging data and digitized H&E histological images produced more accurate classification skin samples versus approaches that used either the histological images or MSI data on their own.

Wanqiu Zhang delivering this presentation at ASMS 2022, Minneapolis, MN.

Dermatopathologists annotated digital H&E images of melanocytic lesions as either melanoma, a type of skin cancer, or nevus. These annotations were used to guide MALDI imaging experiments. Data analysis strategies, including using a pre-trained deep neural network, were applied to classify benign nevi samples from melanoma using individually either the H&E images and the MSI data, and then from the fused H&E and MSI data. The results showed that the multimodal pipeline improved both classification performance and stability. This study provides an example where specialized bioinformatics produced better results than a more typical approach.

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Publication details

Wanqiu Zhang^1,2, Nathan Heath Patterson^3,4, Nico Verbeeck², Jessica Moore³, Alice Ly², Richard M. Caprioli^3,4, Bart De Moor¹, Jeremy L. Norris^3,4, Marc Claesen². Incorporating morphology via deep learning improves classification performance of MALDI imaging for skin lesions , 2022