Ubuchwephesha bee-radionuclide ngoku sele zisetyenziswa ngokuthe ngqo kwiyeza zenyukliya kunye neenkqubo zokuxilonga zanamhlanje. Enye yeendlela ezona zifundo zophando lwe-radiation yi-postitron emission tomography. Inzuzo yokuxilongwa okunjalo yinto enokwenzeka yokwakha imodeli emithathu yendlela yezinto eziphilayo kunye nezitho zangaphakathi.
Iyintoni ukulahleka-positron tomography?
Ingundoqo yendlela ibonakala kwiipropitron (iinqumlezo ezinexabiso elihle). Banobuchule obuhlukeneyo bokuqhagamshelana nombane ophezulu.
Ngaphambi kokuba positron i-tomography okanye i-PET, inkunkuma ye-radioactive injected intravenously, ngokuqhelekileyo i-floral-18, kodwa ngezinye i-carbon-11, i-oxygen-15 ne-nitrogen-13 isetyenziswa. Ngethuba elithile umntu kufuneka ahlale kwindawo yokuphumla, ukuze i-positron-emission isotopes isasazwa emzimbeni. Emva koko, isigulane sifakwa kwizinto ezikhethekileyo, ezifana ne-MRI, apho umzimba wakhe ubonakaliswa yimisebe engenakulimala ngokupheleleyo. Ukuba kukho na ukuphazamiseka kwiinkqubo zokuxilonga okanye izidumbu ezingaphandle kwamanye amazwe, iindawo zokuhlala zihlala zifumana izinto ezininzi zomsakazo, ezirekhodiweyo zixhobo zekhompyutha. Inkqubo ebonakalayo yokuvuvukala, kunye ne-HIV iyahluke kwizitho eziphilileyo.
Uphi i-positron emission tomography esetyenziswayo?
Ngokwenene, iteknoloji echazwe isetyenziswa ekuxilongweni komhlaza. I-PET iyakwazi ukubona umhlaza kwisigaba sokuqala okanye sigaba, xa kungekho sisifo. Ngokwenene, i-tomography isetyenziselwa ukufumana izicubu:
- yomlomo wesibeleko;
- kukhanya ;
- iprotrate gland;
- esiswini.
Inkqubo inikezela ukubeka esweni kwimizimba ye-non-plasma ngobukhulu obuvela kwi-1 mm, kunye nokuxilongwa kweenkqubo ze-metastasis. Kubalulekile ukuba uqaphele ukuba i-tomography inceda ukuqonda indlela i-chemotherapy ephumelelayo ngayo. Inkqubo eyenziwa emva kwexesha lemichiza ibonisa ukwehla kumsebenzi weeseli zomhlaza, ukukhula kwazo kunye nokukhula kobutyebi.
Ukongezelela, i-PET isetyenziswe kwi-cardiology yokurekhoda isifo senhliziyo, ukuphazamiseka kwimijikelezo, ukuphazamiseka kwemithambo ye-coronary, nemiphumo yesifo senhliziyo kunye nokugubha, isifo se-stenosis. I-teknoloji inikezela ngeso lengcamango yesifo senhliziyo kwimilinganiselo emithathu kumacandelo angama-60.
Kwakhona i-positron yokukhishwa kwekhompyutyutha yecomputer yengqondo isetyenziswe ngokusisigxina. Ukuxilongwa ngeendlela ze-PET kuvumela ukufumana:
- i-neoplasms;
- nomhlaza;
- ngqondweni;
- ukuhluthwa;
- Isifo se-Alzheimer;
- iingxaki zokudandatheka;
- pathologies;
- iziphumo zokubetha , ukuhlaselwa kwe-ischemic.
Njengoko unyango lwezonyango lubonisa, ukuba wenza i-positron ukuchithwa kwe-tomography ngexesha, unokuhlakulela i-regimen yonyango echanekileyo nefanelekileyo, edla ngokubanzi
Okuphawulekayo kukusetyenziswa kwe-PET kwi-neurology. Isifo se-Alzheimer kwisimo sawo sokuqala sinokuthenjwa kakuhle kwonyango, kwaye ukuxilongwa kwe-diagnostic kuyasinceda kakhulu kunciphise ukusasazeka kwezilwanyana. Ukuqala kokuqala unyango kunika ukunciphisa izinga lokufa kweengxube zeengqondo kunye nokupheliswa kokusebenza kwezinye iindawo zayo.