SOMATOM Definition AS Open - RT Pro editionStart the RT challenge with an advantage

Maximize patient outcomes and financial performance by starting the RT challenge with top-of-the-line clinical capabilities – from powerful reduction of metal artifacts to the ability to expand activities and to streamline your operations.

Features & Benefits

An advantage for your treatment preparation

Maximize your patient outcome not only by having an accurate image for difficult cases such as pediatric and large patients but also by addressing the challenge of metal implants and managing moving tumors efficiently.

SOMATOM Definition AS Open - Improved visualization with HD FoV Pro

Improved visualization with HD FoV Pro
HD FoV Pro provides intelligent contour and attenuation estimation on large FoV for accurate body outline and tissue density - thereby bringing excellent image quality even for large patients.

Remove metal artifact with iMAR
With iMAR1,2 Siemens offers metal artifact correction on a completely new level. The algorithm combines all three successful approaches: beam hardening correction, normalized sinogram inpainting, and frequency split. No matter if the artifacts are caused by implants such as i.e. dental fillings, screw, plates or prostheses, iMAR helps to boost the image quality.

Comprehensive motion management
Motion Management Pro2 is a comprehensive solution for managing respiratory motion allowing slow acquisitions, fast inhale and exhale protocols, prospective and 4D retrospective imaging with phase, time and amplitude reconstructions. The Open Gating Interface supports interfacing with external motion management devices such as Varian´s RPM®3.

Secure financial performance with an upgradable system that enables to be future-ready as the standard of care increases and complex treatment techniques are more widely adopted.

SOMATOM Definition AS Open - Promising new capabilities

Promising new capabilities
With Dual Energy2, two datasets at different kV settings are automatically acquired and merged. This allows characterization of tissue, metal artifact reduction and supports improved delineation. This high-end feature on a large bore CT also paves the way for promising new applications such as quantitative Z-maps which can be used for dosimetric research, for example when using electrons or protons.

The system can be expanded to 64-slices with z-Sharp, with Siemens' Sinogram Affirmed Iterative Reconstruction (SAFIRE) and state-of-art 3D interventional suites to offer additional services such as follow up diagnostic and interventional procedures.

Improve your process efficiency through an advanced solution from a dedicated RT partner that will ease your everyday workload.

SOMATOM Definition AS Open - Promising new capabilities

Easy-to-use and advanced multi-modality contouring tool
syngo.via RT Image Suite supports you in getting more out of your CT images, efficiently.

  • Streamlined workflow with data pre-fetching and one-click export to TPS of images and contours
  • Easy review and selection of the right images with the ability to display up to 4 series side-by-side2
  • Flexible and confident contouring of moving tumors, using 4D CT data, AverageCT, t-MIP and individual breathing phases
  • Expandable clinical capabilities by enriching the solution with further syngo.via CT applications
SOMATOM Definition AS Open - Seamless and flexible integration

Seamless and flexible integration
The SOMATOM Defintion AS Open – RT Pro edition integrates easily into your existing radiation therapy environment and is compatible with a range of Oncology Information Systems (OIS) and Treatment Planning Systems (TPS), such as Varian’s ARIA®3 and Eclipse™3.

Technical Details

SOMATOM Definition AS Open - RT Pro edition - Technical highlights

Technical details


20 or 64

Rotation speed

0.5/1 s rotation (0.33 s/rotation optional)

Temporal resolution

250 ms (165 ms optional)

Min. voxel size

0.4 mm (0.33 mm optional)

Bore diameter

80 cm

Tube heat capacity

50 MHU

Tube cooling rate

7.3 MHU/min

Generator power

80 kW (100 kW optional)

Table load

227 kg (500 lb), for obese patients 307 kg (676 lb) optional

Scan Field-of-View

50 cm

Recon. Field-of-View

5 – 50 cm, 65 cm HD FoV Pro, 80 cm eFoV

Min. room size

18 sqm (22 sqm incl. control/equipment room)


Air/water (optional)

Reconstruction speed

20 images/s (60 optional)