優(yōu)點(diǎn):對(duì)比度大;實(shí)時(shí)處理;直接顯示和校正; 缺點(diǎn):運(yùn)動(dòng)會(huì)產(chǎn)生偽影;不進(jìn)行選擇性注射時(shí),會(huì)血管重疊,會(huì)產(chǎn)生偽影。