What are the advantages of TOF mass spectrometry imaging?

TOF records a wide m/z full spectrum in a single pulse, with fast acquisition and broad coverage, matching the point-by-point full-spectrum need of imaging and facilitating high-throughput tissue imaging.

Which imaging sources can be combined with TOF?

MALDI, DESI, LDPI and DPI can all connect to TOF host instruments, respectively providing matrix-required/matrix-free options, different resolutions and molecular coverage.

Can Neo-Source LDPI/DPI connect to TOF?

Yes. They offer model-by-model compatibility with mainstream mass spectrometers containing TOF; please refer to the official compatibility list for specifics.

What research is TOF imaging suitable for?

It suits high-throughput, wide-mass-coverage tissue and single-cell-scale imaging, especially spatial metabolomics/lipidomics with multi-molecule co-localization.

Product · Neo-Source

TOF mass spectrometry imaging ion source

A TOF (Time-of-Flight) mass spectrometry imaging ion source refers to an imaging combination that works with a TOF analyzer to achieve high-speed point-by-point full-spectrum acquisition. MALDI-TOF is the most classic form, and DESI, LDPI and DPI can also connect to TOF host instruments, leveraging high throughput and wide mass coverage.

Table of Contents
1. Advantages of TOF imaging 2. Combinations of different sources with TOF 3. Neo-Source compatibility

TOF mass spectrometry imaging ion source — schematic diagram

1. Advantages of TOF imaging

TOF records a wide m/z full spectrum within a single pulse, with fast acquisition and broad mass coverage, highly matching the 'point-by-point full spectrum' logic of imaging, thus making it one of the mainstream analyzers for high-throughput tissue imaging. Combined with fast scanning platforms, large-area ion images can be obtained in a short time.

Wide mass coverage lets a single image carry multiple molecule types such as lipids, metabolites and peptides simultaneously, facilitating multi-molecule co-localization; this is also why MALDI-TOF has long dominated protein/lipid imaging.

2. Combinations of different sources with TOF

MALDI-TOF is mature and broad in coverage but requires matrix; DESI-TOF is ambient and matrix-free, leaning toward tissue scale; after Neo-Source LDPI/DPI connect to TOF host instruments, they can provide complementary routes of ambient matrix-free (LDPI) or high-sensitivity no-polarity-bias (DPI), enriching the molecular coverage of TOF imaging.

Which type of source to connect to TOF depends on the target molecules (macromolecules vs small molecules), whether matrix is acceptable, and whether ambient matrix-free low background is needed.

3. Neo-Source compatibility

Neo-Source LDPI/DPI offer model-by-model compatibility with mainstream mass spectrometers containing TOF, allowing users to expand imaging capability on their existing TOF platform without replacing the analyzer. Their matrix-free (LDPI) and high-sensitivity (DPI) characteristics can complement traditional MALDI-TOF.

For teams already owning a TOF host instrument, the external solution gains imaging expansion at a lower investment; it is recommended to first validate resolution and repeatability with a small sample before expanding.

Neo-Source MSI LDPI Laser Desorption Photoionization Imaging Source

Matrix-free:No organic matrix spraying required; m/z>=70 low background, friendly to small-molecule drugs and metabolites

Ambient operation:Works in open ambient environment; simplified sample preparation; supports near in-situ / in-vivo analysis

Resolution:2–3 μm spatial resolution, among the leading in the industry, reaching single-cell / subcellular scale

Modular compatibility:External add-on design; model-by-model compatibility with Agilent / SCIEX / Thermo mainstream MS hosts

View LDPI specifications and compatible models →

Frequently Asked Questions (FAQ)

What are the advantages of TOF mass spectrometry imaging?: TOF records a wide m/z full spectrum in a single pulse, with fast acquisition and broad coverage, matching the point-by-point full-spectrum need of imaging and facilitating high-throughput tissue imaging.
Which imaging sources can be combined with TOF?: MALDI, DESI, LDPI and DPI can all connect to TOF host instruments, respectively providing matrix-required/matrix-free options, different resolutions and molecular coverage.
Can Neo-Source LDPI/DPI connect to TOF?: Yes. They offer model-by-model compatibility with mainstream mass spectrometers containing TOF; please refer to the official compatibility list for specifics.
What research is TOF imaging suitable for?: It suits high-throughput, wide-mass-coverage tissue and single-cell-scale imaging, especially spatial metabolomics/lipidomics with multi-molecule co-localization.

Get Specifications & Quotation

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).

MSI Ion Source Adapted to TOF Neo-Source MSI LDPI Laser Desorption Photoionization imaging ion source DPI Dual-Photoionization Imaging Source MALDI MSI Ion Source DESI Imaging Ion Source (Desorption Electrospray Ionization)MSI Ion Source

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