Fig. 3From: Esmraldi: efficient methods for the fusion of mass spectrometry and magnetic resonance imagesMALDI–MS image: 3D datacube, or hyperspectral image. A spectrum (in red) is associated to each pixel and describes the molecular content at this position. Each molecule is associated to an ion image, and is characterized by its mass-to-charge ratio (m/z) and relative ion intensityBack to article page