Z is the atomic number (number of protons) en.wikipedia.org/wiki/Atomic_number and E is the energy of the photon en.wikipedia.org/wiki/Photon_energy. Regarding gq/eq I'm unsure what you are referring to. If you mean EQ/D2 here is some more detailed info: goo.gl/Gfowoj.
It depends which job interests you. To be a radiation oncologist that sees the patients and prescribes the treatment, you go to medical school and then do a residency in radiation oncology -- or clinical oncology in certain countries. If you want to be the one delivering the treatments, you can be a radiation therapist (more info here: www.asrt.org/main/career-center/careers-in-radiologic-technology). You can also consider being a medical physicist. MPs are responsible for ensuring safe and effective delivery of radiation (w3.aapm.org/media/index.php#scope). Medical physicists obtain a college degree and then an advanced degree in medical physics along with completing a medical physics residency (at least in the United States). There are multiple paths to be a MP and I recommend contacting AAPM or your country's medical physics organization for more info. Finally, you could pursue a career as a radiation biologist. RBs are usually researchers with a research focus at the intersection of radiation and cancer biology. www.radres.org. Hope this helps!
@@rangochu2713 Radiotherapists do learn medical physics but just the basics and they get a ton of help and are not expected to do that stuff, that's what the MP and dosemietry do. Radio therapists need to be good with people more than good at physics haha. Good luck I'm applying to residency for radiation oncology next month!
