Engineers that matter. Neil Barker, Quality and Improvement Manager, Advanced Oncotherapy. Picture from LinkedIn.
Proton beam therapy can be very effective—and create far less collateral damage— than X-ray therapy, says Neil Barker at Autodesk’s Accelerate 2017 conference, where Barker is the keynote speaker.
This is due to the proton beam’s unusual ability to stop and expend almost all of its energy exactly at the tumor, a phenomenon known as the Bragg Peak effect.
This effect gives protons an apparent improvement over X-rays that unleash their destructive energy almost immediately under the surface of the body, whether or not a tumor is there, and continue to ionize cells until they exit the other side. Since proton beam’s energy is localized, much more of it can be applied to kill the tumor, while minimizing damage to healthy tissue.
Size Matters
When an engineer says size matters, it’s not a joke. Barker, a chartered engineer (UK’s version of a PE) says a multi-treatment room proton therapy center can cost hundreds of millions of dollars and take up the area of a football pitch (soccer field). That’s small compared to the Large Hadron Collider (at CERN), a 27 kilometer (17 mile) tunnel beneath the French-Swiss border.
But not small enough.
Advanced Oncotherapy means to reduce the size of and modify proton therapy centers so that the cost of treatment becomes more comparable to that for X-ray radiotherapy.The maximum energy of the proton beam and, consequently, the depth to which it can penetrate and treat tumours, depends on the number of accelerating units in the linear accelerator.
“A kinetic energy of 230 megaelectron volts typically corresponds to a treatment depth of 32 cm. This energy is sufficient in most cases and more units can be added as required.”
An interview with Neil Barker, conducted at Accelerate 2017, is soon to follow.