• One Software.….Complete Control
  • Create Views, Results & Data….Get the most of your data
  • Share Your Results….Archiving, Documentation & Data Access


RADIUS is the visionary software for electron microscopy (EM) requirements both today and tomorrow. RADIUS uniquely revolutionizes day-to-day work on the electron microscope. For decades, our competence in electron microscopy has driven success in optics, microscopy, imaging and analysis software, and RADIUS combines this with the current challenges of electron microscopy to create a new kind of product family.

RADIUS is a high-performance, forward-looking product. This completely new EM imaging software is the interface between microscope, camera and specimen. As the central integrator, RADIUS guides you systematically through every working step with clearly-organized layouts and defined workflows – starting with system control, moving on to image capture and further processing, finally covering documentation and distribution of the results. RADIUS elegantly simplifies the working processes and applications of electron microscopy even as they become more and more complex.

RADIUS guarantees performance, scalability and modularity with the future built in. Its unlimited 64-bit compatibility means that RADIUS knows no bounds, whether working in live mode or with regard to image size. RADIUS already provides inter- faces for virtual microscopy and for mobile distribution of results.

Meet RADIUS now. The way forward in electron microscopy



Camera Control

RADIUS and our TEM cameras are perfectly matched. It is extremely simple to capture perfect, detailed images with RADIUS. The clearly-structured camera control dialog is characterized by intuitive operation. In live mode, there is direct access to all the important camera functions, such as exposure times, resolutions, camera change and averaging. Every setting change is executed ‘on-the-fly’. If required, numerous extra real-time functions such as online histogram, live shading correction, automatic sharpness filter or automatic exposure control can be switched on. If live image averaging is combined with intelligent offline drift correction, outstanding images can be obtained even from specimen which are otherwise difficult to visualize. The digital zoom using the mouse wheel allows rapid checking of sharpness and resolution in the live image before the image is finally captured.

Microscope Control

The integration of electron microscopes in RADIUS is unique. As with camera control, the user has direct access from RADIUS to the motorized and controllable components of modern (and in some cases older) electron microscopes. Depending on the remote control capability of the electron microscope, it is possible to switch the beam blanker and the shutter, to set enlargement, to switch between normal bright field imaging and diffraction mode or to use microscope alignment. All the microscope parameters which can be read out are automatically included and clearly presented. The implementation of microscopes in RADIUS expands both application potential and spheres of application to a huge extent, guarantees outstanding precision and reproducibility and ensures efficient working. For electron microscopes without remote control capability, RADIUS provides manual microscope control. Enlargement and high voltage data are interrogated automatically and used to calibrate the images captured.

Stage Control

RADIUS also controls the motorized stages and image shift of the electron microscopes. This makes it perfectly straightforward to record high-resolution panoramas automatically. Integrated navigation functions help the user find his or her way easily around the large (often huge) images.

Image Processing

RADIUS includes a variety of advanced image processing techniques. These include sophisticated filtering methods and efficient arithmetical filter techniques. As a consequence, two images can be added to amplify the signal at low intensities or e.g. two images subtracted to visualize differences.

Measuring & Dimensioning

RADIUS provides a variety of options for measuring and dimensioning. Intervals, angles, rectangles, circles, ellipses and polygons can be determined interactively. Orthogonal lines support the user. The measurement data are stored with the image and listed in a table. RADIUS can be expanded by high-performance multi-phase analysis including object counting, which can be restricted to regions of interest (ROIs). An automatic threshold value algorithm ensures rapid results. The result of multi-phase analysis is in each case the absolute and percentage value for area, proportion of area and number of objects.

Object Analysis & Clarification

Object analysis delivers highly detailed information about specific image elements. RADIUS can be expanded by a unique detection process. RADIUS Solution Detection uses a new kind of dynamic threshold value method to separate objects – particles of gold, for example – from the background. In order to be able to deal with the variable issues and often very different types of particle, object classification provides over SO different parameters for geometry (shape, size, position) and pixel properties (intensity, gray value). These parameters can be linked together using logical and arithmetical operations to define specific object classes. The software outputs these data in tabular form and compiles object class diagrams. (*)


Many image analysis tasks require more than just a single image operation to achieve the final result. The RADIUS macro recorder can be used to record consecutive image operations and assign them to a button. The advantage: once defined, even complex tasks can be performed efficiently and reliably by inexperienced users.









Image Acquisition

Standard and enhanced live and snapshot functions

Identical handling of live and snapshot

Smart exposure

Smart live image averaging

Sharpness filter (live / snapshot)

Smart drift correction

Movie acquisition

Automatic calibration of bright field and diffraction images

Online histogram

Live line profile with averaging

Information stamp

Full display of device properties

Averaging of snapshots

Device Control

Multiple Image Alignment (MIA)*

TEM alignments (autofocus, stigmator, eucentricity, coma-free)

TEM control (magnification, goniometer, stage, image mode…)


Virtual EM control for EMs without remote control capability

Image Processing

Image navigator and gallery

Full set of image filters with extended preview

Morphological filters*

Image geometry

Comprehensive interactive measurements

Interactive measurements available in reciprocal space

Export of measurement results

Line profile with averaging

Image layers

Fourier Transformation

Online and Offline Fourier analysis

Multiple ROIs (max. 4), 2n and arbitrary rectangular (DFT/FFT)

Line profile in Fourier space

Filtered and inverse Fourier transformations dynamically linked with origin

Filtering in Fourier space (band pass, sector, blob*, lattice*)

Image Export

Automatic image naming

Calibration report*

Export to document formats (Excel, PDF, …)

Annotations: text, arrows, misc. labels

Archiving & Database

Document Storage

SQL-based server version (*)

Tablet viewer via iTunes (OlyVIA mobile)


Report Generator*

Microsoft Word templates via Word-add in*


Export to Microsoft Word/ PDF*

Macro Recording

Script recorder


64-bit OS > 3 GB system memory


Layout management


Expandable via Solutions*


Dark application skin

Multiple language versions (EN, DE, JP, CN)


License key card based software protection

Floating license server*

Specifications are subject to change without any obligation on the part of the manufacturer.
(*= may require other EMSIS products, some of which may be chargeable and may not be included in the normal RADIUS scope of supply or available with forthcoming RADIUS versions).