SOMATOM go.SimSimulation reinvented

SOMATOM go.Sim is a highly flexible, intuitive CT simulator. With fully integrated hardware and software tailored specifically to your requirements, it increases certainty and reduces the likelihood of errors. It also features advanced algorithms, AI-powered organ-at-risk (OAR) autocontouring, and excellent soft-tissue contrast potentially decreasing target margins. What’s more, it is designed to care for both patients and users – with a calming environment, a simple operating concept, and a single vendor service contract. 

SOMATOM go.Sim can increase workforce productivity and optimize clinical operations. It helps you get the full picture faster so you can spend less time managing CT simulation and more time focusing on patients.

Features & Benefits

SOMATOM go.SimPersonalize images for target contouringMinimize sources of errors in QAReduce complexity and errors in laser steeringSimplify the current practice for particle therapyImage optimization specially for consistent organs-at-risk contours

    Clinical Use

    Reinventing CT simulation with SOMATOM go.Sim – a highly flexible, intuitive CT simulator that we designed in collaboration with over 300 RT specialists – radiation oncologists, medical physicists, dosimetrists, RTTs, and financial decision makers – to give us insights into your world. The result is a groundbreaking approach to CT simulation. It will give you everything you need to achieve the ultimate starting point for optimal RT planning, and will help you produce the most successful outcomes possible.

    The challenges in CT Simulation.
    • Successful CT simulation needs efficient and fail-safe workflows
    • Current processes mean users have to switch between multiple software and hardware solutions


    Streamlined workflows reduce sources of errors

    Lack of integration leads to errors and uncertainty in CT simulation.

    Our solution: Go for a trendsetting mobile workflow

    SOMATOM go.Sim comes with fully integrated hardware and software tailored specifically to your requirements. It offers unparalleled operational flexibility, and intuitive guidance.

    Workflowwith fully integrated hardware and software tailored specifically to your requirements

    This is a workflow that gives you certainty in simulation: It's smooth, fast and is able to deliver the reproducible and user-independent results you need.

    Be certain with a new patient-marking solution thanks to the mobile workflow
    Be certain with a new patient-marking solution thanks to the mobile workflow
    • Seamless and less error-prone processes thanks to the new mobile workflow
    • Streamlined laser QA thanks to fully integrated Direct Laser
    • Intuitive and guided CT simulation thanks to GO technologies
    Somatom go.Sim contouring challenge
    Courtesy of Hospital Del Mar, Spain.
    • Modern treatment techniques require precise planning
    • CT simulation must consistently deliver high-quality patient modeling for the tumor and surrounding organs
    • Yet the data provided for contouring are often not precise enough
    Contouring is the main cause of variability

    Suboptimal image quality leads to suboptimal autocontouring
    Courtesy of University Hospital Aarhus, Aarhus, Denmark
    • The quality of autocontouring depends on the quality of the CT images
    • Suboptimal image quality (caused by metal artifacts, poor soft-tissue contrast, etc.) leads to suboptimal autocontouring7,8
    OAR contouring is very time-consuming

    In the worst-case scenario, radiation oncology professionals have to redo the OAR contouring entirely by hand.

    Courtesy of Radiology Department, Hospital Particular de
    Viana do Castelo, Viana do Castelo, Portugal.

    SOMATOM go.Sim features DirectORGANS3 (Optimized Reconstruction based contours trained by Generative Adversarial Networks) an AI-powered OAR contouring that automates and standardizes key steps in the CT simulation pathway. The high-quality information arrives directly as TPS-ready data.

    Different image requirements for CT simulation
    Courtesy of Radiology Department, Hospital Particular de Viana do Castelo, Viana do Castelo, Portugal.

    DirectORGANS3 optimizes the images specifically for the algorithm.
    This paves the way for consistent OAR contouring powered by AI.

    AI Siemens Healthineers

    DirectORGANS3 is a revolutionary, AI-based OAR contouring solution. The result reduces unwarranted variations with high-quality contours that approach the level of consensus-based contours. It leverages optimized and standardized reconstruction parameters to deliver input to the deep learning based contouring solution.

    • OAR contouring directly in the system, no need for manual interaction
    • Optimized images designed for the deep-learning algorithm
    • High-quality contours that approach the level of consensus-based contours


    A powerful combination of three innovative solutions delivers confident tumor visualization, precise target contours, and a straightforward 4D workflow: iMAR3 reduces metal artifacts, DirectDensity2,3 unlocks optimal kV settings with a single calibration curve, and Respiratory Motion Management3 optimizes scan parameters based on the patient’s breathing.

    • Confident tumor visualization thanks to automated metal artifact reduction with iMAR3
    • Precise target contours with optimum kV imaging and a single calibration curve thank to DirectDensity2,3
    • Straightforward 4D workflow thanks to comprehensive respiratory motion management3
    Dialysis Treatment Patient
    • Current CT simulation can create anxiety for patients and pressure for operators
    • Operators have to spend a lot of time outside the examination room
    • Installing and maintaining a multi-vendor system is complex and time-consuming
    CT simulation can create anxiety for patients and pressure for operators

    49% of patients feel distressed and anxious.10

    If operators are under less time pressure, they can devote more time to caring for patients and generating high-quality results. If patients feel at ease, their CT simulation will be more successful.

    Improved patient experience through patient-centric design
    • Total freedom over how and where you set up the simulation, and more time with your patient thanks to the mobile workflow
    • A calming environment for the patient thanks to the ring mood lighting
    • More comfort for patients thanks to the large 85-cm bore
    User interface with a shorter learning curve
    • One revolutionary user interface
    • One call center
    • One maintenance appointment
    • One service contract
    • One training session
    Solutions that care for patients

    SOMATOM go.Sim creates a comfortable and calming environment for patients, and enables staff to spend more time at their side.

    Technical Specifications

    Bore size

    85 cm

    Scan Field-of-View (sFoV)

    60 cm

    Acquired slices/reconstruction slices


    Z-axis coverage

    1.92 cm

    Rotation time

    0.353, 0.5, 1.0 s

    max. table load

    227/3073 kg (TG-66 compliant tables)

    System footprint

    4 m2/43 ft2 (surface area covered by gantry and moving table top)

    Min. room requirement

    17.3 m2/186.2 ft2