the improvements in focal radiation in the last <10 yrs show that the photon shaped beam is almost identical to proton beam in accuracy with very little radiation splash from the photon beam machines. In some cases, some radiation splash may indeed suppress cancer cells lurking outside of known areas of cancer in prostate and surrounding tissue/lymph nodes. in years passed, lymph node radiation was risky business and almost always caused radiation burn to surrounding tissue. Not so today.

The best delivery systems are made by Varian /Seimens .
(Varian -Siemens Healthineers): The undisputed market leader in standard and adaptive radiotherapy. Their TrueBeam and Ethos systems use built-in 4D imaging and AI to reshape and target radiation beams in real-time while patients breathe. Varian uses both photon and proton beam technology- Proton Therapy: Systems like the ProBeam use accelerated proton particles rather than photons. Protons are heavier, charged particles designed to stop exactly at the tumor site, minimizing damage to tissues and organs located behind the tumor.

Elekta: A major innovator in precision oncology and MRI-guided radiation. Their Elekta Unity integrates a linear accelerator with a high-field MRI, allowing doctors to see soft tissue and adapt the radiation plan in real-time during the procedure.