Ma'anar ƙamus na "Dye Radiopaque" wani abu ne da ake allura ko hadiye shi don taimakawa wajen hango gabobin ciki ko sifofi a lokacin aikin hoton likita kamar su X-rays, CT scans, ko MRI scans. Rinyoyin radiyo, wanda kuma aka sani da ma'anar bambanci, sun ƙunshi mahadi waɗanda ke ɗaukar hasken X-ray ko wasu nau'ikan radiation kuma suna bayyana farare ko bayyanuwa akan hotunan da aka samu, yana sauƙaƙa gano takamaiman kyallen takarda ko rashin daidaituwa. Ana iya amfani da waɗannan rinayen don taimakawa wajen gano yanayin kiwon lafiya iri-iri, gami da cututtukan zuciya, ciwon daji, da matsalolin jijiyoyin jini.