Varian linac

Manufactured by Agilent Technologies

The Varian linac is a linear accelerator designed for use in medical and scientific applications. It accelerates charged particles, such as electrons, to high energies for various purposes. The core function of the Varian linac is to generate and deliver high-energy beams for various applications, including radiation therapy and research.

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Lab products found in correlation

Eclipse treatment planning system, by Agilent Technologies (1 mentions)

Close spelling variants of this product

Varian Trilogy Linac Varian Linac 2100CD Varian TrueBeam linac Linacs

2 protocols using varian linac

eMLC Device for Varian Linac

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The eMLC device is an add‐on tool designed to be attached to the Varian linac (Fig. 1) (Varian Medical Systems, Palo Alto, CA), containing 27 pairs of tungsten leaves with a 0.56 cm width and 2 cm thickness, providing a field size as large as 17.6×17.6cm2 defined at 100 cm source‐to‐surface distance (SSD). The leaves have a tongue‐and‐groove shape with straight ends, which will ensure minimal interleaf leakage. The distance between the bottom of the eMLC leaves and the linac source is 84 cm, while the bottom of the plastic exterior of the entire eMLC assembly is distanced from the linac source by 87.6 cm. With 94 cm of SSD in the treatment, there is approximately a 6.4 cm air gap for clearance between the eMLC device bottom and the patient surface. The loading of MERT plans, as well as delivery by the eMLC device, can be managed by software which accompanies the device.

Jin L., Eldib A., Li J., Emam I., Fan J., Wang L, & Ma C. (2014). Measurement and Monte Carlo simulation for energy‐ and intensity‐modulated electron radiotherapy delivered by a computer‐controlled electron multileaf collimator. Journal of Applied Clinical Medical Physics, 15(1), 177-186.

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Stereotactic Body Radiation Therapy for Lung Cancer

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Patients were positioned in a vacuum-mattress on a board with integrated markers and underwent a planning computed tomographic scan (0.2 cm/slice to 0.3 cm/slice) as well as a four-dimensional positron-emission tomographic/computed tomography scan in treatment position. To account for respiratory tumor motion, an internal target volume was created, including the gross tumor volumes in maximum inhale and exhale tumor position over the breathing cycle. The planning target volume (PTV) was generated by 0.4-cm to 0.5-cm isotropic expansion of the internal target volume.
Treatment plans were calculated with either the Oncentra Master Plan (Nucletron, Veenendaal, The Netherlands), using a type B algorithm or the Eclipse Treatment Planning System (Varian Medical Systems, Palo Alto, California) and applied by a Varian linac (Varian Medical Systems) using 6-MV photon energy. Conformal dose distribution was achieved using 10-14 static coplanar beams or treatment was delivered using dynamic arcs. Three times 12.5 Gy or five times 7 Gy were prescribed on the 60% isodose enclosing the PTV. Patient positioning was verified using a kV cone beam before each fraction; if necessary, corrections were performed.

Adebahr S., Hechtner M., Schräder N., Schimek-Jasch T., Kaier K., Duncker-Rohr V., Gkika E., Momm F., Gaertner J., Becker G., Grosu A.L, & Nestle U. (2019). Early Impact of Pulmonary Fractionated Stereotactic Body Radiotherapy on Quality of Life:Benefit for Patients With Low Initial Scores (STRIPE Trial). Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer, 14(3).

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