Ukuskena kwe-PET: kuyini, kwenzelwa ini nokuthi kwenziwa kanjani

-Delile

• Yenzelwe ini
• Kwenziwa kanjani

Iskena se-PET, esibizwa nangokuthi i-positron emission computed tomography, ukuhlolwa kwe-imaging okusetshenziswa kabanzi ukuxilonga umdlavuza kusenesikhathi, ukuhlola ukukhula kwesimila nokuthi ngabe ikhona yini imetastasis. Iskena se-PET siyakwazi ukukhombisa ukuthi umzimba usebenza kanjani, ngokuphathwa kwento enemisebe, ebizwa ngokuthi i-tracer, okuthi uma imuncwa yilo mzimba, ikhiphe imisebe ebanjwa yimishini futhi iguqulwe ibe isithombe.

Ukuhlolwa akubangeli buhlungu, noma kunjalo kungadala ukungaphatheki kahle uma umuntu eyi-claustrophobic, njengoba kwenziwa entweni evaliwe. Ngaphezu kokusetshenziswa kabanzi kwi-oncology, i-PET scan iyasiza futhi ekuhlolweni kwezifo zemizwa, njenge-Alzheimer's kanye nesifo sokuwa.

Ukuhlolwa kwe-PET ukuhlolwa okutholakala ezinhlelweni zezempilo kanye ne-SUS okwenziwa kuphela ukuphenya, ukuxilonga kanye nokuqapha umdlavuza wamaphaphu, i-lymphomas, umdlavuza wekoloni, umdlavuza we-rectal kanye nezifo ze-immunoproliferative, ezinjenge-multiple myeloma, okuyisifo lapho amaseli egazi aqala khona ukwanda nokuqongelela emnkantsheni wethambo. Thola ukuthi yiziphi izimpawu nokuthi ungazibona kanjani i-myeloma eziningi.

Yenzelwe ini

Iskena se-PET isivivinyo sokuxilonga esihlukile kwezinye izivivinyo ze-imaging, njenge-computed tomography kanye ne-magnetic resonance imaging, ngokwesibonelo. Lokhu kungenxa yokuthi kuvumela ukubona ngeso lokhozi izinkinga ezingeni lamaselula ngokukhishwa kwemisebe, okungukuthi, kuyakwazi ukuhlola ukusebenza kwamaseli, kukhomba umdlavuza kusenesikhathi, isibonelo.

Ngokungeziwe ekusetshenzisweni kwayo ekuhlonzweni komdlavuza, i-PET scan ingasetshenziselwa:

• Thola izinkinga zemizwa, ezifana nesifo sokuwa kanye nokuwohloka komqondo;
• Bheka izinkinga zenhliziyo;
• Ukuqapha ukuvela komdlavuza;
• Gada impendulo ekwelashweni;
• Thola izinqubo ze-metastatic.

Iskena se-PET futhi siyakwazi ukunquma ukuxilongwa futhi sichaze ukubikezelwa, okungukuthi, amathuba okuthuthuka noma okuba kubi kwesiguli.

Kwenziwa kanjani

Ukuhlolwa kwenziwa ngokuphathwa ngomlomo, ngokusebenzisa iziphuzo, noma ngqo emthanjeni we-tracer, okuvame ukuba yi-glucose emakwe ngento enemisebe. Ngoba i-tracer iyi-glucose, lokhu kuhlolwa akubeki engcupheni yezempilo, njengoba isuswa kalula ngumzimba. I-tracer kufanele ihlinzekwe ngokuzila ukudla amahora ama-4 kuye kwayi-6, ngokweseluleko sezokwelapha, futhi ukuskena kwe-PET kwenziwa ngemuva kwehora eli-1, ukuvumela isikhathi sokuthi into enomsakazo imuncwe umzimba, futhi ihlala cishe ihora elilodwa.

Ukuskena kwe-PET kwenza ukufundwa komzimba, kuthathe imisebe ekhishiwe nokwakha izithombe. Ekuphenyweni kwezinqubo ze-tumor, ngokwesibonelo, ukusetshenziswa kwe-glucose ngamaseli kukhulu kakhulu, ngoba i-glucose ingumthombo wamandla adingekayo okwahlukanisa amaseli. Ngakho-ke, isithombe esakhiwe sizoba namaphoyinti wokuqina lapho kunokudla okukhulu kwe-glucose futhi, ngenxa yalokho, ukuphuma okukhulu kwemisebe, okungabonakalisa isimila.

Ngemuva kokuhlolwa kubalulekile ukuthi umuntu aphuze amanzi amaningi ukuze umkhondo ususwe kalula. Ngaphezu kwalokho, kungenzeka ukuthi kunezimpawu ezingezwani zokungezwani komzimba, njengokubomvu, lapho kwafakwa khona i-tracer.

Ukuhlolwa akunakuphikisana futhi kungenziwa ngisho nakubantu abanesifo sikashukela noma izinkinga zezinso. Kodwa-ke, abesifazane abakhulelwe noma abancelisayo abelulekwa ukuba benze lokhu kuhlola, ngoba kusetshenziswa into enemisebe engathinta ingane.