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Siemens Linear Accelerators* Comparison Chart

Model Artiste Oncor (Impression, Expression, & Avante Garde) Primus K Primus M
Other Variations Artiste Impression, Expression, Avante Garde
Years Manufactured 2009-2011 2004-2011 1998-2005 1998-2005
Power Source Klystron Klystron, Magnetron Klystron Magnetron
Photon Energy Configuration 6&10/15/18 6&10/15/18 6&10/15/18 6&10/15/18
Electron Energies Yes Yes Yes Yes
Multi-Leaf Collimator (MLC)** 160 MLC 58; 82; 160 MLC (optional) 58 MLC 58 MLC
Portal Imager(EPID)** Optivue (Amorphous Silicon) Optivue (Amorphous Silicon) BeamView, Optivue (optional) BeamView, Optivue (optional)
Treatment Delivery 3D, IMRT, VMAT, SRS/SBRT 3D, IMRT, VMAT, SRS/SBRT 3D, IMRT, SRS/SBRT (optional) 3D, IMRT, SRS/SBRT (optional)
KV Imaging for IGRT** K-Vision N/A N/A N/A
M-Vision, In room CT (optional) M-Vision M-Vision N/A N/A
Stereotactic Radiosurgery** Cones or MLC Based Cones or MLC Based Cones or MLC Based Cones or MLC Based
Treatment Couch TXT ZXT or TXT ZXT ZXT
Market Demand***
Pros Extremely affordable since Siemens exited linac market Extremely affordable in the secondary market Inexpensive in secondary market

Good for parts to support newer machines

Few available
Plentiful and inexpensive in secondary market

Good for parts to support newer machines
Cons Few available in the secondary market

Requires R&V software to operate MLC
Few are being installed anymore

Require expensive R&V software to operate MLC
Few are being installed anymore

Require expensive R&V software to operate MLC
Few are being installed anymore

Require expensive R&V software to operate MLC
*Data shown here may not be accurate and is based on equipment seen in the secondary market. See manufacturers for exact data.
**Similar devices are manufactured by vendors other than the linear accelerator manufacturer.
***Five stars indicate that the resale demand for like systems is high, and used equipment will therefore command a higher price. Few stars indicate that the resale demand is lower, and prices for used equipment is lower. One star indicates very little, if any, demand currently exists.

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