Varian High Energy Linear Accelerator Comparison Chart*

Models TrueBeam Trilogy Clinac iX
Clinac DMX
Clinac DHX
Silhouette Clinac 21/23EX Clinac
2100 C/CD
2300 C/CD
Other
Variations
  TrueBeam STX, SVC (Small Vault Configuration), VitalBeam Trilogy STX, Novalis, Trilogy Silhouette ix Silhouette, DMX, DHX, 2100C Silhouette, 2100C, 23EX 2100C, 2300C/D, 21EX, ix
Year(s)
Manufactured
2010 & newer 2005 & newer 2005 & newer 2001 & newer 1998-2004 1989 & newer
Power Source Klystron Klystron Klystron Klystron Klystron Klystron
Photon Energy
Configuration
6&10/15/18 6&10/15/18 6&10/15/18  6&10/15/18 6&10/15/18 6&10/15/18
Electron Energies Yes Yes Yes Yes Yes Yes
Multi-Leaf
Collimator (MLC)**
120 MLC (Field size 40x40cm, Central 20cm of field - 5mm leaf width, Outer 20cm of field - 10mm leaf width) 120 MLC (Field size 40x40cm, Central 20cm of field - 5mm leaf width, Outer 20cm of field - 10mm leaf width) 80 MLC (Field size 40x40cm); 120 MLC (Field size 40x40cm, Central 20cm of field - 5mm leaf width, Outer 20cm of field - 10mm leaf width) 80 MLC (Field size 40x40cm); 120 MLC (Field size 40x40cm, Central 20cm of field - 5mm leaf width, Outer 20cm of field - 10mm leaf width) 80 MLC (Field size 40x40cm); 120 MLC (Field size 40x40cm, Central 20cm of field - 5mm leaf width, Outer 20cm of field - 10mm leaf width) 52 MLC (Field size 26x40cm, Leaf widths 10mm);
80 MLC
(Field size 40x40cm); 120 MLC (Field size 40x40cm, Central 20cm of field - 5mm leaf width, Outer 20cm of field - 10mm leaf width)
Portal Imager
(EPID)**
aSi1000 aSi1000 aSi500, aSi1000 LC250, aSi500, aSi1000 (optional) LC250, aSi500, aSi1000 (optional) LC250, aSi500, aSi1000 (optional)
Treatment Delivery 3D, IMRT, RapidArc, SRS 3D, IMRT, RapidArc, SRS 3D, IMRT, RapidArc, SRS
(optional)
3D, IMRT, SRS
(optional)
3D, IMRT, SRS
(optional)
3D, IMRT, SRS
(optional)
KV Imaging for IGRT** OBI OBI OBI (optional) OBI (optional) OBI (optional) OBI (optional)
CBCT Yes Yes Only with OBI Only with OBI Only with OBI Only with OBI
Stereotactic
Radiosurgery**
Integrated with LINAC Integrated with LINAC Optional Cones or mMLC Optional Cones or mMLC Optional Cones or mMLC Optional Cones or mMLC
Treatment Couch Exact IGRT Exact IGRT Exact, Exact IGRT (optional) Exact Exact ETR, Exact (optional)
Demand/Resale
Value***
$$$$$ $$$$ $$$ $$ $$ $$
*Data shown here may not be accurate and is based on equipment seen in the secondary market. See manufacturers for exact data
**Similar devices are manufactured by vendors other than the linear accelerator manufacturer
***Five $$$$$ indicate that the resale demand for like systems is high, and used equipment will therefore command a higher price
Few dollar signs indicate that the resale demand is lower, and prices for used equipment is lower. One $ indicates very little, if any, value currently exists.

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