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Bringing critical care imaging to your patients

The SOMATOM On.site from Siemens Healthineers provides mobile head CT imaging with reliable and consistent quality right at your patient's bedside.

Change the way you care for ICU patients suffering from acute and neuro critical conditions, and transform care delivery at your hospital.

  • Minimize patient transport
  • Optimize staff deployment
  • Achieve reliable and consistent image quality at the point of care

SOMATOM Image Quality

  • The Touch UI makes scanner operation intuitive and easy.
  • Mobile CT head imaging reduces the number of ICU patient scans performed in the radiology department, potentially resulting in more streamlined utilization of stationary systems and staff.

All-in-one system design

  • Integrated computers allow flexibility for patient scans in small spaces where additional equipment would be a hindrance.
  • Slim and easy system with a built-in trolley & batteries. 
  • Integrated patient support accessories.

Smart driving concept

  • The motorized trolley with an ergonomic drive handle allows easy maneuvering to the patient’s bedside. 
  • The integrated camera provides the user real-time viewing on the Touch UI. 
  • Slow and fast drive modes for system transport and maneuvering.

Convenient patient positioning

  •  Integrated patient support accessories include patient scan support (head holder for neuroimaging) and body support (shoulder board for neuro imaging)
  • No need for bed adapters or special connectors to address individual patient bed design
  • Telescopic scanner design allows the gantry to glide away from the patient, offering ample space for patient positioning until you are ready to start scanning
  • 35 cm gantry bore opening

Easy scan set-up and fast workflow

  • Intuitive Touch UI
  • GO technologies provide guidance for cross-trained staff through the scanning process
  • Recon&GO performs automated postprocessing and automatically uploads the images to PACS
  • Single-operator design

Telescopic scanner design

  • SOMATOM On.site features a telescopic gantry that glides on the stationary system trolley base during the scanning process.
  • The telescopic gantry contributes to consistent and reliable CT image quality: the trolley remains stationary during the image acquisition, reducing motion artifacts typically caused by scanner movement.

Self-shielded system design

  • Attachable radiation shields cover the front and back gantry openings.
  • The telescopic gantry houses the moving scanner components, with the tube and detector moving away from the patient or the front gantry. This innovative approach reduces scatter radiation compared to conventional mobile CT scanners that don’t deploy this design.

Clinical Use

The SOMATOM On.site brings reliable image quality to the patient's bedside by combining proven technologies from existing SOMATOM scanners with newly designed components.

Thanks to the latest advances in digital healthcare, myExam Companion provides built-in expertise. And thanks to workflow guidance provided by GO technologies, the system is easy to use and enables greater consistency across your entire team, allowing you to acquire optimal images.


Technical Details

Scanner type SOMATOM On.site
Detector 2.4 cm (Stellar UFC)
Physical detector rows 32
Detector row thickness 0.75 mm
Acquisition mode


Tube voltage 80, 120 kV
Tube current 3-25 mA (increments of 1 mA)
kW output/generator power 3 kW
Gantry aperture 35 cm
Scan field/FOV 26 cm, HD FOV 35 cm*
Scan range 24 cm
Pitch 0.35 – 1.5 (in steps of 0.05)
Iterative reconstruction algorithms SAFIRE, iMAR
Reconstruction slice thickness options 0.8, 1.0, 1.5, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 10.0 mm
Tube cooling Hybrid (air & water)
Image transfer Wireless and LAN connection to hospital network
Batteries 4 rechargeable lead-acid batteries (4 x 12V)

Contact us today to learn more about how we can help you solve your most pressing challenges.

1 Barnes E. Portable CT brings lower costs, reduce risk to ICU. AuntMinnie.com; 2008.)

2 Masaryk, TJ., Kolonick R, Painter T, Weinreb DB. The economic and clinical benefits of portable head/neck CT imaging in the intensive care unit. Radiol Manage [Internet]. 2008 Mar-Apr [cited 2019 Aug 15]:30(2):50-54. Available from: http://www.ncbi.nlm.nih.gov/pubmed/18431942

3 Agrawal, D., et al. (2016). Bedside computed tomography in traumatic brain injury: Experience of 10,000 consecutive cases in neurosurgery at a level 1 trauma center in India. Neurology India, 64(1), 62 and Masaryk et al. (2008). The economic and clinical benefits of portable head/neck CT imaging in the intensive care unit. Radiology Management March/April 2008: 50-54. Available from: https://pubmed.ncbi.nlm.nih.gov/26754994/