A.1:2:1 B.1:1:1 C.1:2:2 D.2:4:1 E.1:2:3
A.±0.1° B.±0.2° C.±0.5° D.±1° E.±2°
A.固定體位-對(duì)射野大小-打開(kāi)光標(biāo)尺燈對(duì)距離-擋野-擺好位后再次對(duì)醫(yī)囑 B.固定體位-對(duì)射野大小-擋野-打開(kāi)光標(biāo)尺燈對(duì)距離-擺好位后再次對(duì)醫(yī)囑 C.對(duì)射野大小-固定體位-擋野-打開(kāi)光標(biāo)尺燈對(duì)距離-擺好位后再次對(duì)醫(yī)囑 D.打開(kāi)光標(biāo)尺燈對(duì)距離-對(duì)射野大小-固定體位-擋野-擺好位后再次對(duì)醫(yī)囑 E.固定體位-打開(kāi)光標(biāo)尺燈對(duì)距離-對(duì)射野大小-擋野-擺好位后再次對(duì)醫(yī)囑