Ukuskena kusebenzisa idayi ekhethekileyo equlethe iitracer zeradioactive (Isotope ebhalwe iimolekyuli zeGlucose). Ezi tracer ziyaginywa, zitsalelwe, okanye zitofwe kwi vein engalweni kuxhomekeke ekubeni leliphi na ilungu lomzimba elihlolwayo. Amalungu athile kunye nezicubu zifunxa umkhondo.
Xa zibhaqwe kwi-PET scanner, ezo ziza kuvumela ugqirha ukuba abone indlela amalungu kunye nezicubu ezisebenza kakuhle ngayo.
I-tracer iya kuqokelela kwiindawo eziphezulu zokusebenza kweekhemikhali, eziluncedo kuba izicubu ezithile zomzimba, kunye nezifo ezithile, zinezinga eliphezulu lemichiza. Ezi ndawo zesifo ziya kubonakala njengamabala aqaqambileyo kwi-PET scan.
I-PET-CT idibanisa iinkcukacha ezintle ze-CT kunye nekhono le-PET lokubona utshintsho ekusebenzeni kweeseli. Le ndibaniselwano ivumela ukufunyaniswa kwangaphambili kunye ngokuchanekileyo ngakumbi kwesifo kune-CT okanye i-PET yodwa
Eyona nto isetyenziswa kakhulu ukufumanisa: Umhlaza, iingxaki zentliziyo, ukuphazamiseka kwengqondo
I-PET scans ziluncedo ekubhaqeni umhlaza kunye nakwi:
Imifanekiso ye-PET / CT yongezelela ulwazi olufunyenwe kwizifundo eziqhelekileyo ezifana ne-CT, i-MRI, kunye ne-Ultrasound. Ikwanceda ekuxilongeni ngokuchanekileyo, ukuphuhlisa izicwangciso zonyango ezijoliswe ngakumbi, kunye nokwenza ngcono, ukubeka iliso lonyango oluncinci, olufanele lube neziphumo eziphuculweyo zesigulane.
