The mainstream route is serial sectioning: cut the sample (tissue, herb, material) into a series of sections at a fixed layer thickness, perform MSI on each section, then register and stack the layer images by spatial coordinates to reconstruct 3D volume data. Multi-channel/rotational acquisition can also be combined. The smaller the layer thickness, the finer the 3D reconstruction, but the data volume and time also increase.
The Neo-Source MSI DPI's 20–200 μm adjustable resolution, matrix-free and measure-on-demand features fit the high-throughput needs of serial sectioning; the MSI LDPI's 2–3 μm matrix-free ambient imaging can provide higher inter-layer-resolution 3D reconstruction.
First, layer thickness and registration: sections need consistent thickness and corresponding coordinates, otherwise reconstruction misaligns; second, preparation consistency: each layer should use the same preparation to avoid inter-layer deviation; third, data-volume management: 3D volume data is far larger than a single section, requiring reasonable storage, dimensionality reduction and visualization.
Matrix-free preparation is especially critical here: the two Neo-Source imaging sources are matrix-free, eliminating spraying, optimization and waiting steps, allowing large numbers of serial-section samples to run faster and more stably, reducing inter-layer human differences.
3D MSI can be used for: 3D distribution of drugs/metabolites in tumor spheroids or tissue, 3D localization of active ingredients inside herbs, spatial structure of internal doping or coatings in materials, and dynamic changes of molecular distribution during development or disease course. It upgrades 'section conclusions' to '3D conclusions', closer to real biological or material structures.
The DPI application notes list metabolomics, pathology diagnosis, plant metabolism and industry as directions; the 3D idea can be overlaid on these 2D applications to form a more complete spatial narrative.
3D MSI has high requirements for section quality, registration algorithms and computing resources; conclusions need complementary validation with histology and microscopy. Its value lies in providing the unique dimension of '3D molecular space'.
Engineered, the two Neo-Source imaging sources are compatible with mainstream mass spectrometers from Agilent, AB SCIEX and Thermo, providing a self-developed titanium-alloy ion transfer tube that does not damage the sample at the front end and is detachable for cleaning, enabling stable and reproducible 3D MSI.
To obtain detailed specifications, compatible models, or a quotation for the MSI LDPI / DPI full series imaging ion sources, visit the Neo-Source official website, or contact the official team for compatibility advice tailored to your mass spectrometer (Agilent / SCIEX / Thermo and other mainstream MS).