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What is a Beam Transport System?

Beam Transport System

What is a Beam Transport System?

A beam transport system focuses and shapes the beam while guiding it to the treatment room. Varian's ProBeam® beam transport system is designed specifically for pencil beam scanning.

ProBeam Beam Transport System

ProBeam Beam Transport System

A series of large bending and focusing magnets, used with diagnostic measurement tools, guides the proton therapy beam to the treatment room. The system directs the magnets to deliver a precise beam size—and it's capable of treating shallow tumors quickly without range shifters. The properties of the beam directed at the patient remain independent from the gantry angle. With its precise and stable beam optics, the entire system ensures accurate beam positioning and shaping—which produce a highly conformal dose.

ProBeam Energy Selection System

ProBeam Energy Selection System

The ProBeam Energy Selection System (ESS) is a proton beam modification system, converting the fixed energy from the cyclotron to the desired treatment energy. In this way the ESS aids in verifying optimal treatment precision. The ESS is designed specifically for delivery of pencil beam scanning and the precision it offers.

The energy for each spot is prescribed in the treatment planning, and the integrated ProBeam system delivers the prescribed dose per spot to the treatment area. There is a dosimeter integrated into the nozzle that measures each spot before delivering the next to optimize dose rate and overall conformity.

ProBeam Degrader

ProBeam Degrader

The degrader is a device for adjusting the energy of a proton beam from 230 to 70 MeV, per the treatment plan. The energy of the proton beam, in turn, matches the therapy penetration depth to the precise depth of a targeted tumor.

Events

Oct
25
XIX Congresso da Sociedade Brasileiro de Radioterapia
Rio de Janeiro, Brazil