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A.HU=0.707*kVp*mA*s
B.HU=1.35*kVp*mA*s
C.HU=1.414*kVp*mA*s
D.HU=1.732*kVp*mA*s
E.HU=kVp*mA*s

A.標(biāo)稱(chēng)焦點(diǎn)=實(shí)際焦點(diǎn)*cosθ
B.標(biāo)稱(chēng)焦點(diǎn)=實(shí)際焦點(diǎn)*sinθ
C.實(shí)際焦點(diǎn)=標(biāo)稱(chēng)焦點(diǎn)*sinθ
D.實(shí)際焦點(diǎn)=標(biāo)稱(chēng)焦點(diǎn)*cosθ
E.標(biāo)稱(chēng)焦點(diǎn)=實(shí)際焦點(diǎn)*θ