CT Simulators


CT Simulators have become the standard for simulation of patients for most radiation therapy practices around the world. Because CT Simulation is only typically performed during treatment planning, utilization of the CT Simulator is low relative to more heavily used linear accelerators.

ROS understands clinicians’ requirements for providing effective and reliable treatment planning tools while maintaining budget parameters. Our used and refurbished CT Simulator equipment solutions offer radiation therapy clinics a practical solution for upgrading or adding CT Simulation to a radiation therapy department.


Depending on your clinical needs and patient mix, ROS has a CT Simulation solution to fit most radiation therapy practices.

There are four main categories of used CT Simulators available from ROS.

Single Slice CT Simulator  Large Bore Single Slice CT Simulator  Multi-Slice CT Simulator  GE Lightspeed RT-4 Large bore multi-slice CT SCanner
Single Slice
CT Simulators
Large Bore
Single Slice
CT Simulators
CT Simulators
Large Bore
CT Simulators

Selecting which CT Simulator is right for your practice begins by answering a few questions.

Questions to consider before purchasing a CT Simulator  
Considering the above questions you can now closer determine which type of CT Simulator is right for your practice.

  CT Simulator Graph


Discover the pros and cons of each  CT Simulator in the tabs below.


Single Slice

Single Slice CT Simulator

Many facilities around the world utilize single slice CT Simulation technology. If you are not in need of integrating with respiratory gating technology and do not require a 60cm FOV, then a single slice CT Simulator provides maximum value and reliability for your treatment planning needs.

ROS has an assortment of GE, Siemens, and Philips single slice CT Simulators available to install at your facility for a great price.

Large Bore Single Slice

Large Bore Single Slice CT Simulator

The first generation of large bore CT Simulators to enter the radiation therapy market was the Philips ACQSIM CT Simulator. This line of CT Simulators offered radiation therapy practices the ability to perform 3-D planning while allowing a larger aperture for patient positioning devices and a larger FOV (60cm).

ROS offers clinicians an affordable large bore CT Simulator solution using refurbished Philips ACQSIM CT Simulators.


Multi-Slice CT Simulator

Multi-Slice CT Simulators provide the advantages of Large Bore Multi-Slice CT Simulators for less money. The primary difference between traditional Multi-Slice CT Simulators versus Large Bore Multi-Slice Simulators is the field of view (50cm vs. 60cm).

Advantages of using multi-slice CT technology  

  • Excellent image quality
  • Rapid image acquisition
  • Compatibility with respiratory gating technology
Large Bore Multi-Slice

Large Bore Multi-Slice CT Simulator

Large bore multi-slice CT Simulators offer distinct advantages for use in a radiation therapy setting.

  • Provides a large field of view (60cm FOV)
  • A large aperture (approximately 80cm) to allow patient positioning devices such as breast boards
  • Multi-slice detector technology in order to gain a more rapid image acquisition
  • Compatible with respiratory gating technology

Given these advantages, the drawbacks for purchasing a used, large-bore multi-slice CT Simulator are related to availability in the marketplace and price relative to the other lower priced CT Simulator options


ROS understands the unique needs of radiation therapy providers and the role of CT based simulation in a radiation therapy department. As such, ROS offers a full range of CT Simulator services in order to provide turn-key CT Simulator solutions.

  • Tailored refurbishment solutions
  • Installation packages
  • Warranty, service and maintenance
  • Clinical applications training
  • Patient positioning lasers
  • Flat carbon fiber table tops
  • Power conditioners
  • Dedicated project planning and logistics support
  • Equipment removals and disposals

What do I get when I buy a refurbished CT Simulator from ROS?

Most used CT Simulators we sell go through our 41 point refurbishment process in order to ensure you with a CT Simulator that is both affordable and reliable. Each refurbishment begins with an inspection by our engineers to ensure we provide you the best possible used CT Simulator. Our meticulous refurbishment process ensures that you buy a quality CT Simulator in "like-new" condition.

CT Simulator refurbishment check list:

• Refinishing and painting of covers and treatment table • Test intercom and auto voice functionality
• Vacuum entire system • Take baseline scans check and document image quality
• Blow out entire system • Check error logs for any previous problem with system. Document any problems found
• Clean entire system • Check and adjust all system power supplies replace as required
• Clean and inspect all accessories • Verify and repair any previous system problems
• Check and tighten all connections in PDU • Reload system software
• Check all system cables/connectors replace as required • Verify operation of all mechanical motions
• Grease main bearing in Gantry • Check gantry balance
• Clean and inspect slip rings and brushes replace as required • Verify table incrementation
• Inspect motor brushes in axial motor replace as required • Perform mechanical characterization
• Inspect collimator filter replace as required • Interference test
• Clean and oil high voltage wells in X ray tube and tanks • Calibrate generator
• Check input power jumpers and verify set to 480v • Check for proper operation of detector heater
• Check all Emergency stops for proper operation • Check all tube alignments adjust as required
• Check table tape switches for proper operation replace as required • Tube output check
• Check gantry display for proper operation • Perform complete system calibration
• Inspect all system fans for proper operation replace as required • Check and document image quality
• Check for proper operation of all console components • Inspect positioning lasers for proper operation adjust and replace as required
• Check monitors for proper operation and adjustments • Exercise system
• Check system archiving • Perform and document OEM form 4879X System performance checks
• Check system networking  

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