PET / CT - onjani ucwaningo?

Kakade abaningi obaziyo, ukhuluma ngani PET / CT, okuyinto entsha, indlela enembile kakhulu ngenxa ekuhlonzweni okuba nomdlavuza ngokuphawulekayo, izifo zezinzwa pathologies zenhliziyo. Yena, ngokungafani kuya CT noma i-MRI alibonisi isithombe izici yokwakheka nesineke, futhi ithumba inqubo ukusebenza kwezitho ezithile nezicubu. Kanjani ncamashi uqhutshwa PET scan nokuthi udinga ngokulungiselela, sizobe ukumboza kulesi sihloko.

Yini izifo uxilongwe usebenzisa PET / CT?

Positron ekushayweni tomography isifundo eziyinkimbinkimbi lapho mhlawumbe ekuxilongweni izimila okuyinto musa ukukhiqiza ukubonakaliswa emitholampilo umdlavuza Ukudlulela i esigabeni sokuqala. Ngaphezu kwalokho, kuvumela nawe ukulawula isifo, imiphumela kanye nokusebenza yokwelapha.

Ngo nezenhliziyo, ama-PET / CT ukuhlola elisetshenziswa amacala senhliziyo futhi ngaphambi yenhliziyo Umthambo dlula ngokuxhunyelelwa. Ngo Neurology nalo uxilongwe multiple sclerosis, futhi wezifo zengqondo - Alzheimer ngendlela efanele usaqala, lapho kubonakaliswa sangaphandle kokugqashuka isifo ingakamiswa uyalandelwa. By the way, inhlolovo lisiza ekuhlukaniseni Alzheimer kusuka kwamanye pathologies okuholela komqondo senile (Parkinson noma Huntington sika).

Ngosizo PET uhlolwa ubuchopho ukusebenza ngemva kokushaya nokuquleka uxilongwe isithuthwane.

PET / CT: Izibuyekezo izinzuzo le ndlela ukuxilongwa

Ngaphambi nezinye yesimanje izindlela ukuhlola kunezinzuzo eziningi-PET. Okokuqala, le ndlela - inembe kakhulu kunazo zonke zonke akhona, futhi ngaphezu kwalokho, kungase esikhundleni survey bendabuko eziningana. Futhi, ama-PET kubangela ubuhlungu, ayinakho eyingozi emzimbeni womuntu futhi angathola inqubo isifo ngendlela efanele usaqala.

Iyatholakala phakathi kodokotela mayelana nokubuyekezwa PET / CT asivumela ukuba ngikhulume ngokukhululeka ngokukhubazeka le ndlela njengendlela ukuthola ukwaziswa okunokwethenjelwa ngokuphathelene nakho esigabeni lapho ebonakalayo iso tingucuko tekuhleleka isitho ayikho. Futhi lokhu, njengoba wazi, kwenza kube nokwenzeka ukuba uqale ukwelashwa ngaleso izigaba zokuqala sifo, kakhulu kwandisa ukusebenza yokwelapha.

Umgomo we-PET Luhlolo

Kuyaphawuleka, ukhuluma ngani PET / CT izici ukuthi ucwaningo ikuvumela ukuba alobe ukugeleza kwegazi e kwezitho nezicubu zomzimba, kanye ukusetshenziswa kwe-glucose zokugcina.

Emzimbeni isihloko iqondiswa encane, ingozi kubantu, le yokuthi liphansi izinga lemisebe owenziwa ngegazi ezicutshini. emisebeni Kubi ivela ke, ama-PET iqinile futhi idluliselwa ku computer. Kufika ukucutshungulwa kolwazi kanye kudalwa isithombe. Futhi ngaphezulu Radioactive ungaphakathi nezicubu, yilapho bezibona khona bese ubheka isithombe - okuthiwa izindawo "hot", futhi endaweni lapho izidakamizwa incane, bheka zibuthuntu - sites "abandayo".

Ukuthuthukisa amangqamuzana omdlavuza kakhulu isidingo glucose therein ageleza umzimba esebenzayo enikeza ukuba izithombe emva PET / CT elikhanyayo ( "hot") yesithombe. Ngakho, i-PET uphethwe kungatholakala ukuqala ukukhula kwabo okungavamile amangqamuzana omdlavuza kuphela, ngisho ulungise ukukhula umhlahlo.

Amasu ka-PET / CT

Kuye muphi umsebenzi wokuhlola imisebenzi, udokotela kungase kudingeke labo noma ezinye izindlela ukuxilongwa echazwe radiopharmaceuticals ezahlukene:

• Pet nge 11C-choline;
• PET nge 18F-fluorodeoxyglucose;
• Pet nge 11C-methionine;
• Pet nge 13N-ammonia.

Ngokwesibonelo, i-sitholakele glioma abulalayo (izimila ebuchosheni) okwakufuneka kuma-PET / CT ne methionine, okukuvumela ukuhlola degree of umdlavuza.

Ukukhuphula imiphumela yaba okuthembekile, usuku ngaphambi kwesifundo isiguli Kunconywa ukuwakhipha kusuka ekudleni ukudla konke amaprotheni-aqukethe: inyama, inhlanzi, ubisi soy. Ungakwazi udle kuphela imifino nezithelo. Esikhathini umtholampilo kufanele eze ukudla, futhi bavunyelwe ukuba baphuze amanzi eziningi angenamkhawulo (kodwa hhayi fizzy noma amnandi).

Kwezinye izimo, uphethwe Kwenziwa choline

Ukulinganisa isimo nomzimba umdlavuza wendlala kanye izimila kwesibindi kanye nobuchopho ngokuvamile eyenziwa PET / CT ne choline.

Le into is wokwakha weseli izindonga, ngakho ukwethulwa radionuclide kuwo ivumela ngeso lengqondo khona metastases ngisho encane ukuthi zibonakale izithombe ngesimo amaphuzu elikhanyayo.

Lezizifundo Kwakuseshwa 2 izigaba - ngokushesha emva nokuphathwa radiopharmaceutical nangemva 40 imiz. Iskena kwenziwa esiswini esingenalutho kanye ngaphandle kokusebenzisa uketshezi (ekuseni ke ayifakiwe ngokuphelele).

amasonto 1-2 ngaphambi luhlolo isiguli watusa ngaphandle kusukela ekudleni:

• amaqanda;
• uphizi;
• kabhontshisi, udali ubhontshisi;
• isibindi (neminye imikhiqizo);
• isipinashi;
• iklabishi;
• amantongomane;
• oats;
• orange juice futhi iyiphi amavithamini (ikakhulukazi B iqembu).

Njengoba ucwaningo lwenziwa

Ezingosini zezingxoxo lapho ukuhlolwa PET / CT, isiguli uyabuzwa ukucisha kumadivayisi eselula kanye nokuhlinzeka ukuya egumbini lokulinda lapho isiguli ngaphakathi imizuzu 20 kufanele ukuphumula ngehlise umoya. Kuyadingeka ukuba ngcono ikhwalithi izithombe.

Ngemva kwalokho examinee injected radiopharmaceutical uphinde ulindele elinye isigamu sehora, kuze ndaba kwasakazwa ezicutshini zomzimba. By endleleni, uma kungukuthi ngalesi sikhathi kukhona isidingo ukuya ethoyilethi, awukwazi uyizibe. Ngaphezu kwalokho, iziguli bayakhuthazwa ukuya PET isithwebuli ukuthi libukeka umshini-X-ray. ihlala cishe imizuzu engu-45 inhlolovo inqubo ngokwalo (ubuchopho ukuskena, Nokho, kungathatha amahora 1.5).

Uma kudingekile phakathi naleyo nqubo isiguli sikwazi ukusondela othile abasebenzi bezokwelapha. Endabeni senhliziyo yesiguli esiveza zonke, isifundo singahlelwa uyobanika iziqu umsebenzi ozobonisa izici kwegazi futhi ukusebenza walo mzimba.

Ukuze ekwelapheni impahla kungase kudingeke amahora ambalwa 2 izinsuku. Konke kuncike uhlobo nokuba yinkimbinkimbi inhlolovo.

Kangakanani lonke luhlolo umzimba

PET / CT inqubo umzimba wonke ngokuvamile kwenziwa phansi ukhalo. Umbuzo noma cha ngesikhathi esifanayo ubambe Yekhanda, uhlala impikiswano. Azikwazi e ezitolo ezinkulu eziningi. Uma survey kudingekile anatomically ezindaweni okunzima kwenziwa kuhloswe kuthwetshulwa ejenti umehluko (iodine amalungiselelo).

Iskena isiqalo, ngokuvamile indawo okhalo, ukugwema ekushintsheni isithombe evelayo ngenxa ukugcwaliswa kancane kancane kwesinye. into ngayinye ukuskenwa imizuzu okungenani 4 (ekushayweni scan) plus elinye imizuzu 2 (yokudlulisela scan).

PET scan wonke umzimba ikuvumela ukuba wenze uhlelo oluphelele ukusebenza, uma kungenzeka, ukususa zonke izicubu abathintekayo.

Izimo for PET / CT

Kufanele kuqashelwe, ebhekisela PET / CT, okuyinto uphenywa kwezinye izimo ukuchitha is contraindicated, ngoba zingase idatha uhlanekezelwe. Ngokwesibonelo, lokhu kwenzeka ngasekuqaleni isikhathi nasezinkingeni ezilandela ngemva kokuhlinzwa emva biopsy evulekile (kulezi zimo ubuncane okulindeleke amaviki 4 emva kokuhlinzwa). PET futhi contraindicated emva nokwelashwa ngamakhemikhali yamuva noma ukwelashwa ngemisebe. Kulo mBhalo, watusa ngenyanga ezintathu-break.

izinqubo okuvuthayo emzimbeni: abscesses, izifo kanye sarkidoz - angase akhiphe imiphumela eyiphutha-HIV lapho kuthwetshulwa. Ezimweni ezinjalo, kudingeka baqaphe nalokho libonisa PET / CT.

Kwezinye Kwezinye izimo (ezifana claustrophobia noma uma isiguli nobunzima kule lisalele isikhundla) ukuskena olandelwayo iyahlukahluka kuye ngokuthi isimo lesiguli.

Yini okufanele mina khumbula lapho kulungiselelwa PET / CT

Ukuze ama-PET / CT ukuhlola ngeke akunike ukungakhululeki, futhi imiphumela yaba izinga njengoba okuhle, udinga ukulandela imithetho jikelele ambalwa ukuze uhlobo inqubo ngamunye:

• Ukuze aqhube PET / CT kufanele sigqoke ngokufudumele futhi kahle.
• On izingubo nomzimba akufanele nensimbi futhi ubucwebe.
• Njengoba kungathatha 1 ilitha ukuphuza amanzi ezingenashukela carbonated.
• Abesifazane kudingeka zifake e udokotela eyaziwa ngokukhulelwa ekhona noma kunokwenzeka, kanye nokuncelisa ibele, ngoba ukuskena ngokucacile kungavunyelwe kulezi zimo.
• Qiniseka ukuthi ukusho khona komzimba.
• Ukuze iziguli sikashukela, kudinga isikhathi okukhethekile PET / CT.
• Ezimweni lapho ucwaningo iqhutshwa ukhalo kungase kudingeke esasikhipha phakathi urinary esinyeni ipayipi.
• Kuyo luhlolo isiguli kufanele zixhunywe, awukwazi ukushintsha isikhundla.
• Uma omunye izincomo alinikwa ke ngokushesha ngemuva ukuskena abahlolwa babekwazi ukubuyela ekuphileni okuvamile, futhi ukusheshisa ukuqedwa radiopharmaceuticals, kubalulekile ukuba baphuze ketshezi ngangokunokwenzeka.

Indlela ahumushe imiphumela PET / CT: lesi siphetho kungasho?

Emva ukuskena Kwenziwa ngesandla isiguli banikwa. Ngokushesha kudingekile ukuxwayisa noma ubani kuleli kheli le-survey, ukuzama ukuzithiba sibaphathe - kungumsebenzi udokotela kuphela adla (nabezokwelapha, siqhuba PET, futhi ningathuli tincomo).

Ukungabi ubuchwepheshe kungaholela ekuchazweni kwemiphumela. Zingase kubonakale kunzima kakhulu kunalokho eliyikho ngempela kuyinto, noma, Ngakolunye uhlangothi, asidingi kokungenela wezokwelapha. PET / CT Imiphumela kungahunyushwa kahle kuphela udokotela, yona enithuma ukuba lolu hlolo. Futhi uma isithathe isinqumo siqu, khona-ke, kungakhathaliseki ukuthi kuyoba esinqumeni wakho umbono, kungcono ukukhombisa uchwepheshe yakhe iphrofayeala ukusazi ngokunembile isifo esikuphethe futhi isabelo ukwelashwa okufanele.