狠狠撸

radiobiology radiotherapy dna damage x-ray radiotherapy equipment radiotherapy calculation radiation types dosimetry deterministic effect oncology x-ray tube diagnostic equipment x-ray production 5rs anode heel effect x-ray imaging system biological effect of ionizing radiation radiation hazard radiation uses radiation sources radiotherapy treatment planning discovery of x-ray external photon beams therapy dose distribution measurement absorbed dose stochastic effect radiation chemistry pdd tmr dose response curve tar radiotherapy treatment volume let direct action dna treatment cancer high energy beam linac r structure atom early models of atom modern models of atom history of radiation radioactivityy radiation mri mri system mri iamging mri imaging diagnostic imaging non ionising imaging magnetic resonance imaging how mri works mri principles radiotherapy fundamental radiotherapy principle radiotherapy technique effect of radiation stoschastic effect let radiation rbe radiation radiotherapy volume definition radiation response direct effect radiation electromagnetic radiation ssd sad treatment planning dose distribution medical physics medical devices anode x-ray principle of xray focal spot anode medical instrumentation rotating anode stationary anode cathode x-ray tube cathode focal spot x-ray x-ray filament focusing cup indirect effect radiation