Siemens ONCOR Impression LINAC System

Siemens ONCOR Impression LINAC System

Brand: Siemens
Web ID: 13810
Condition: Refurbished

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The Siemens ONCOR Impression is an advanced linear accelerator that can be used for clinical routine applications, as well as complex and advanced treatments. The ONCOR Impression has a wide variety of configurations to meet the needs of both the patient and the clinic.

Three base configurations are available, with each having a wide range of standard and optional features. Most features are available as an option for each base configuration.

The Siemens ONCOR Impression is available refurbished through Avante Health Solutions. For more information, contact an Avante representative today.


  • Available in three base configurations: ONCOR Impression, Expression, and PreScision
  • ONCOR Impression
    • Basic system for ONCOR linear accelerators
    • Supports routine and advance medical treatments
    • Upgradable to IGRT, SRS, and SRT linear accelerator configurations
  • ONCOR Expression
    • Fully integrated IGRT linear accelerator
    • Allows for 2D and 3D imaging
    • Upgradable to SRS and SRT linear accelerator configurations
  • ONCOR PreScision
    • For stereotactic treatment with 160 MLC and/or ModuLeaf
    • Dramatically reduces delivery time
    • Upgradable to IGRT linear accelerator configuration
  • High dose rate of up to 2,000MU per minute
  • Advanced user interface for accurate setup and delivery
  • All-digital platform
  • Choice of multileaf collimators to meet clinical needs
  • Offline imaging review
  • Broad range of clinical applications with photon and electron selection options
  • OIS system for data management and security (optional)
  • Optiguard collision avoidance system (optional)



  • Nominal rotation range: ±190
  • Nominal speed: 1 RPM
  • Nominal speed: 6°/sec
  • Nominal target-to-isocenter distance: 100 cm


  • ONCOR: 260.4 H x 313.7 L x 143.0 cm W (102.5 x 123.5 x 56.5 in)
  • ONCOR Weight (including counterweight): 7,730 kg (17,000 lbs)
  • ONCOR Counterweight: 2,155 kg (4,741 lbs)
  • Universal base frame: 33.0 H x 339.1 L x 160.0 cm W (13.0 x 133.5 x 63.0 in)
  • Universal base frame weight: 592 kg (1,302 lbs)


  • VAC (USA): 480
  • VAC (International): 400/200
  • Frequency: 50/60 Hz

Facility Water Cooling Specifications/Recommendations

  • Constant facility cooling water: 28 l / min (7.5 gal / min)
  • Maximum inlet pressure: 552 kPa (80 PSI)
  • Minimum pressure drop: 241 kPa (35 PSI)
  • Maximum inlet temperature: 25° C (77° F)
  • Minimum inlet temperature: 16° C (60° F)
  • Optimum inlet temperature: 18° C (65° F)