I-X-ray computed tomography (CT) itshintshe kakhulu imifanekiso yezonyango, inika imifanekiso eneenkcukacha zomzimba womntu. Eyona nto iphambili ekusebenzeni kakuhle kweenkqubo ze-X-ray CT kukho ityhubhu ye-X-ray, evelisa ii-X-ray ezifunekayo kwimifanekiso. Uphuhliso lwakutshanje lwetekhnoloji luzise izixhobo zokubona umgama oguquguqukayo (ii-VFDD) kwiinkqubo ze-X-ray CT, nto leyo ephucula umgangatho womfanekiso kunye nokukwazi ukuxilonga. Eli nqaku liphonononga iingenelo ze-VFDD kwiinkqubo ze-X-ray CT kunye nendlela ezisebenzisana ngayo neetyhubhu ze-X-ray ukuphucula iziphumo zezigulane.
Ukuqonda umgama we-variable focus detector
Isixhobo sokubona ukugxila okuguquguqukayo sibhekisa kubuchule benkqubo ye-X-ray CT ukulungisa umgama phakathi kwetyhubhu ye-X-ray kunye nesixhobo sokubona ukugxila. Iinkqubo ze-CT zemveli zihlala zisebenzisa i-focus esisigxina, ethintela ukuguquguquka komfanekiso kunye nomgangatho. Ngokuxhasa i-focus eguquguqukayo, iinkqubo ze-CT zanamhlanje zinokuphucula inkqubo yokubona umzobo ngokusekelwe kwiimfuno ezithile zeskeni nganye.
Phucula umgangatho womfanekiso
Enye yezona nzuzo ziphambili ze-VFDD kwiinkqubo ze-X-ray CT kukuphucula kakhulu umgangatho womfanekiso. Ngokulungisa ubude be-focal, inkqubo inokuphucula isisombululo sendawo kunye nomahluko, okubangela imifanekiso ecacileyo neneenkcukacha ezingaphezulu. Oku kuluncedo ngakumbi kwiindawo ezintsonkothileyo zomzimba, apho ukuthathwa kwemifanekiso ngokuchanekileyo kubalulekile ekuxilongweni ngokuchanekileyo. Ityhubhu ye-X-ray idlala indima ebalulekileyo kule nkqubo, njengoko inokulinganiswa ngokusekelwe kubude be-focal obulungisiweyo ukuze kunikezelwe idosi efanelekileyo yemitha, ukuqinisekisa ukuba umgangatho womfanekiso uyagcinwa ngaphandle kokubeka emngciphekweni ukhuseleko lwesigulana.
Ukuphuculwa kokusebenza kakuhle kwedosi
Enye inzuzo yomgama we-variable focus detector kukuphucula ukusebenza kakuhle kwedosi. Kwiinkqubo zemveli ze-fixed-focus, idosi yemitha idla ngokufana nokuba indawo yokufota ikweyiphi na indawo. Oku kunokubangela ukuvezwa okungeyomfuneko kwezinye iindawo kunye nokuvezwa okungaphelelanga kwezinye. Nge-VFDD, ityhubhu ye-X-ray inokulungisa ukuphuma kwemitha ngokusekelwe kumgama ukusuka kwi-detector, okwenza ukuba ukuhanjiswa kwedosi kube ngokuchanekileyo. Oku akunciphisi nje kuphela ukuvezwa kwemitha yesigulana kodwa kukwaphucula ukhuseleko olupheleleyo lwenkqubo yokufota.
Iiprotokholi zemifanekiso eziguquguqukayo ngakumbi
Ukwaziswa kwe-VFDD kuvumela ukuguquguquka okukhulu kwiiprotokholi zokuthatha imifanekiso. Iingcali zonyango zinokulungisa ubude befocal ngokusekelwe kwiimfuno ezithile zesigulana kunye nendawo enomdla kuyo. Umzekelo, ubude befocal obude bunokuba luncedo ngakumbi xa kufotwa amalungu omzimba amakhulu, ngelixa ubude befocal obufutshane bunokuba bufanelekile ngakumbi kwizakhiwo ezincinci nezintsonkothileyo. Oku kuguquguquka kuqinisekisa ukuba iinkqubo ze-X-ray CT zinokuzivumelanisa neemeko ezahlukeneyo zeklinikhi, nto leyo ezenza zibe sisixhobo esisebenzisekayo sokuthatha imifanekiso yokuxilonga.
Ukwakhiwa ngokutsha kwe-3D okuphuculweyo
Izixhobo zokubona izinto eziguquguqukayo zikwanegalelo ekuphuculeni ubuchule bokwakha ngokutsha obunemilinganiselo emithathu (3D). Ngokuthatha imifanekiso kwiimitha ezahlukeneyo ze-focal, inkqubo inokuvelisa iimodeli ze-3D ezichanekileyo ngakumbi zezakhiwo zomzimba. Oku kuluncedo ngakumbi kucwangciso lotyando kunye novavanyo lonyango, apho imifanekiso ye-3D echanekileyo ibalulekile kwiziphumo eziphumelelayo. Ukuthembeka kwezi zakhiwo kuphuculwe ngamandla etyhubhu ye-X-ray okubonelela ngemifanekiso ehambelanayo nesemgangathweni kumgama owahlukeneyo.
ukuququmbela
Ngamafutshane, ukuhlanganiswa kwezixhobo zokubona umgama oguquguqukayo (ii-VFDD) kwiinkqubo ze-X-ray CT kubonisa inkqubela phambili ebalulekileyo kubuchwepheshe bokufota ngemifanekiso yezonyango. Ngokuphucula ubudlelwane phakathi kwetyhubhu ye-X-ray kunye nesixhobo sokufota, ii-VFDD ziphucula umgangatho womfanekiso, ziphucula ukusebenza kakuhle kwedosi, kwaye zibonelela ngokuguquguquka okukhulu kwiiprotokholi zokufota. Njengoko intsimi ye-radiology iqhubeka ihambela phambili, ezi zinto zintsha ngokungathandabuzekiyo ziya kukhokelela kubuchule obunamandla bokuxilonga kunye nokuphuculwa kokhathalelo lwezigulane. Ikamva leenkqubo ze-X-ray CT liqaqambile, kwaye ii-VFDD ziya kuvula indlela yezisombululo zokufota ezichanekileyo nezisebenzayo.
Ixesha leposi: Septemba-15-2025