I-CT Scanner (I-Computed Tomography Scanner) iyithuluzi lokuthwebula isithombe lezokwelapha eliyinkimbinkimbi elihlanganisa ubuchwepheshe be-X-ray nokucutshungulwa kwekhompyutha ukuze kwakhe izithombe ezinemininingwane ehlukene yezingxenye zomzimba. Lapho iziguli zenza inqubo ye-CT Scanner, zivame ukuyalwa ukuthi zibambe umoya ngezikhathi ezithile. Le mfuneko ingase ibonakale ilula, kodwa idlala indima ebalulekile ekuqinisekiseni ukuthi i-CT Scanner ikhiqiza izithombe zokuxilonga ezisezingeni eliphezulu. Kulo mhlahlandlela obanzi, sizohlola ukuthi kungani ukubamba umoya kubalulekile ngesikhathi sokuhlolwa kwe-CT Scanner nokuthi kuyithinta kanjani inqubo yokuxilonga.
Uzilungiselela Kanjani I-CT Scan
Ukulungiselela a Ukuhlolwa kwe-CT Scanner kuhilela izinyathelo ezimbalwa ezibalulekile ezithonya ngokuqondile ikhwalithi yezithombe eziwumphumela. Ubuchwepheshe besimanje be-CT Scanner buthuthuke kakhulu, nokho ukubambisana kwesiguli kuseyisici esibalulekile ekutholeni imiphumela emihle.
Uma ihlelelwe inqubo ye-CT Scanner, iziguli ngokuvamile zithola imiyalelo ethile esekelwe ohlotsheni lokuhlola. Ngomfanekiso we-CT Scanner wesisu noma wesifuba, ukuzila ukudla amahora ambalwa ngaphambili kungase kudingeke. Lokhu kulungiselelwa kusiza i-CT Scanner ukuthi ithwebule izithombe ezicacile zezitho zangaphakathi ngaphandle kokuphazamiseka ezinqubweni zokugaya.
Uchwepheshe we-CT Scanner uzochaza inqubo ngokuningiliziwe ngaphambi kokuqala. Bazogcizelela ukubaluleka kokunganyakazi nokulandela imiyalelo yokuphefumula kahle. Umshini we-CT Scanner ngokwawo uyithuluzi elikhulu, elimise okwedonathi elinetafula eligudlukayo elislayida phakathi nendawo. Njengoba i-CT Scanner izungeza umzimba wonke, ithwebula amakhulu ezithombe ikhompuyutha bese izihlanganisa ukuze idale ukubukwa okunemininingwane eminingi.
Ukuma ngendlela efanele kubalulekile ukuze kuhlolwe ngempumelelo i-CT Scanner. Uchwepheshe uzokusiza ukuthi ulale endaweni efanele, ngokuvamile usebenzisa imicamelo noma izintambo ukuze ugcine ukuzinza. Lokhu kumisa kuqinisekisa ukuthi i-CT Scanner ingakwazi ukuthwebula izakhiwo ezidingekayo ze-anatomical nge-artifact encane yokunyakaza.
Nalu uhlu lokuhlola olujwayelekile lokulungiselela inqubo ye-CT Scanner:
Landela yonke imiyalelo yokuzila ukudla enikezwe umhlinzeki wakho wezempilo
Gqoka izingubo ezinethezekile, ezixegayo ngaphandle kweziphu zensimbi noma izinkinobho
Susa ubucwebe, izibuko zamehlo, nanoma yiziphi izinto zensimbi ezingaphazamisa i-CT Scanner
Yazisa uchwepheshe nganoma yimiphi imithi oyiphuzayo
Xoxa nganoma yikuphi ukukhulelwa okungenzeka nomhlinzeki wakho wezempilo ngaphambi kokuhlolwa kwe-CT Scanner
Fika kusenesikhathi ukuze ugcwalise amaphepha futhi ulungise noma yikuphi ukukhathazeka
Inqubo ye-CT Scanner ngokwayo ngokuvamile ayinabuhlungu, nakuba ezinye iziguli zingase zithole ukungakhululeki okuncane ngokulala unganyakazi isikhathi eside. Umshini we-CT Scanner wenza imisindo evunguzayo nokuchofoza phakathi nokusebenza, okuyinto evamile ngokuphelele.
Ukuqonda inqubo ye-CT Scanner kungasiza ekudambiseni ukukhathazeka. Uchwepheshe we-CT Scanner usebenzisa umshini egumbini eliseduze kodwa angabona, ezwe, futhi akhulume nawe phakathi nokuhlolwa. Lolu hlelo lokuxhumana luvumela uchwepheshe ukuthi anikeze imiyalelo yokuphefumula ngezikhathi ezifanele phakathi nenqubo ye-CT Scanner.
Lapho Usebenzisa Ama-ejenti Wokugqama
Ukuhlolwa okuningi kwe-CT Scanner kusebenzisa ama-ejenti wokuqhathanisa ukuze kuthuthukiswe ikhwalithi yesithombe futhi kunikeze ulwazi oluningiliziwe lokuxilonga. Lezi zinto ezihlukile, ngokuvamile ezisekelwe ku-iodine, zisiza ukugqamisa izicubu ezithile, imithambo yegazi, noma izitho ezingaphakathi kwezithombe ze-CT Scanner.
Uma inqubo ye-CT Scanner idinga ukuphathwa ngokuphambene, iziguli zingase zithole i-ejenti ngomugqa womthanjeni, ngomlomo, noma ngomhume, kuye ngendawo ehlolwayo. I-ejenti yokuqhathanisa izungeza emzimbeni futhi iguqule okwesikhashana ukuthi izicubu ezithile zivela kanjani ezithombeni ze-CT Scanner.
Isikhathi sokubamba umoya siba bucayi ikakhulukazi lapho kusetshenziswa ama-ejenti wokuqhathanisa ne-CT Scanner. Njengoba okuhlukile kugeleza egazini, i-CT Scanner kufanele ithwebule izithombe ngezikhathi ezithile ukuze ibone ngeso lengqondo isistimu yemithambo kahle. Ukubamba umoya wakho phakathi nalezi zigaba ezibalulekile kuvimbela ama-artifacts anyakazayo angase afihle izakhiwo ezithuthukisiwe.
Ithebula elingezansi libonisa ukuthi isikhathi sokuqhathanisa sizithinta kanjani izinhlobo ezahlukene zokuhlolwa kwe-CT Scanner:
| I-CT Scanner Examination Type |
Contrast Administration Method |
Optimal Image Window |
-Holding Isikhathi Sokubamba |
| I-Pulmonary Angiography |
Ngemithambo |
Imizuzwana engu-15-25 ngemva kokujova |
10-15 imizuzwana |
| Ukufanekisa Kwesisu |
Ngemithambo/Ezomlomo |
Imizuzwana engama-60-80 ngemuva komjovo |
15-20 imizuzwana |
| Ukufanekisa Kwesibindi |
Ngemithambo |
Izigaba ze-Arterial (25-35s) kanye ne-Portal (60-80s). |
10-15 imizuzwana ngayinye |
| Inhliziyo CT |
Ngemithambo |
Iqondile ekushayeni kwenhliziyo |
5-10 imizuzwana |
Ubuchwepheshe besimanje be-CT Scanner buhlanganisa isofthiwe yokulandelela i-bolus eqapha ukufika kokuqhathanisa ngesikhathi sangempela. Lesi sici esiyinkimbinkimbi se-CT Scanner sivumela ochwepheshe ukuthi baqale ukuskena ngokunembile lapho ukugqama kufinyelela endaweni okuqondiwe kuyo, kukhuliswe ukutholakala kokuxilonga kuyilapho kunciphisa ukuchayeka emisebeni.
Iziguli ezenza izinqubo ze-CT Scanner ezithuthukisiwe kufanele ziqaphele imiphumela engemihle engaba khona, ngokuvamile emnene futhi eyesikhashana. Lokhu kungase kuhlanganise:
Ukuzwa okushisayo okushisayo
Ukunambitheka kwensimbi emlonyeni
Isicanucanu esifushane
Ukulunywa noma ukuqunjelwa (akuvamile)
Uchwepheshe we-CT Scanner uzokuqapha eduze phakathi nangemuva kokuphatha okuhlukile. Uma uhlangabezana nanoma yiziphi izimpawu ezingavamile phakathi nenqubo ye-CT Scanner, kufanele ngokushesha wazise uchwepheshe.
Ngokuhlolwa okuthile kwe-CT Scanner, ikakhulukazi lezo ezihlola isifuba noma isisu esingaphezulu, i-ejenti ehlukile ingase ibangele umuzwa wesikhashana wokuphelelwa umoya. Lo muzwa wenza imiyalo yokubamba umoya elandelayo ibaluleke nakakhulu, njengoba noma yikuphi ukunyakaza phakathi nalesi sigaba kungase kuphazamise ikhwalithi yesithombe se-CT Scanner.
Izinzuzo Zokulandela Iziyalezo Zokubamba Ukuphefumula
Ukunamathela emiyalweni yokubamba umoya ngesikhathi a Ukuhlolwa kwe-CT Scanner kunikeza izinzuzo eziningi ezithinta ngokuqondile ukunemba kokuxilonga nokunakekelwa kwesiguli. Ukuqonda lezi zinzuzo kungasiza iziguli ziqonde ukubaluleka kwalo myalelo olula kodwa obalulekile.
Inzuzo eyinhloko yokubamba umoya okufanele ngesikhathi senqubo ye-CT Scanner ukuqedwa kwama-artifacts anyakazayo. Uma isiguli siphefumula ngesikhathi sokutholwa kwesithombe, izithombe eziwumphumela ze-CT Scanner zingabonisa ukufiphala noma ukuhlengezela okungafihla imininingwane ebalulekile ye-anatomical noma zilingise nokugula. Lawa ma-artifact angaholela kulokhu:
Imiphumela ye-CT Scanner engaphelele edinga ukuphinda kuthathwe isithombe
Ukuhlola okwengeziwe okungadingekile
Ukuxilongwa okungalungile okungenzeka
Ukwanda kokuchayeka emisebeni okuvela ezivivinyweni eziphindayo ze-CT Scanner
Izithombe zekhwalithi ephezulu ze-CT Scanner zinika amandla ama-radiologists ukuthi abone okungahambi kahle futhi enze ukuxilonga okunembe kakhudlwana. Lapho iziguli zilandela imiyalelo yokubamba umoya, i-CT Scanner ingakwazi ukufeza ukulungiswa kwayo okuphezulu kwendawo, okungenzeka iveze izilonda ezincane njengamamilimitha angu-1-2.
Enye inzuzo ebalulekile yokubamba umoya okufanele ngesikhathi sezinqubo ze-CT Scanner ukuncipha komthamo wemisebe. Ubuchwepheshe besimanje be-CT Scanner buhlanganisa amasistimu okulawula ukuchayeka alungisa imisebe ngokusekelwe ezidingweni zekhwalithi yesithombe. Uma izithombe ezinganyakazi zitholwa ngokubamba umoya okufanele, i-CT Scanner ingase isebenzise imithamo ephansi yemisebe kuyilapho igcina ikhwalithi yokuxilonga.
Ithebula elingezansi libonisa ukuthi ukubamba ukuphefumula kuzithinta kanjani izici ezihlukahlukene ze-CT Scanner imaging:
| Ipharamitha ye-CT Scanner |
Enokubamba Ukuphefumula Okufanelekile |
Ngokubamba Ukuphefumula Okungenele. |
| Ikhwalithi Yesithombe |
Okufanelekile |
I-suboptimal ene-artifacts |
| Ukuzethemba kokuxilonga |
Phezulu |
Yehlisiwe |
| Umthamo Wemisebe |
Kuncishisiwe |
Okungenzeka kunyuswe (uma ukuphinda ukuskena kuyadingeka) |
| Ukutholwa Kwezilonda Ezincane |
Kuhle kakhulu |
Konakele |
| Isikhathi Sokuhlola |
Okujwayelekile |
Okungenzeka kunwetshwe |
Ekuhlolweni okukhethekile kwe-CT Scanner, njengalokho okuhlola izigaxana zamaphaphu noma izilonda zesibindi, ukubamba umoya kubaluleke kakhulu. Lezi zifundo ngokuvamile zidinga ukuqhathanisa nezikena ze-CT Scanner zangaphambilini ukuze kuhlolwe izinguquko ngokuhamba kwesikhathi. Amasu okubamba umoya angaguquki aqinisekisa ukuthi ukuhlolwa kokulandelela kwe-CT Scanner kungaqhathaniswa ngokunembile nezifundo eziyisisekelo.
Amathrendi akamuva kubuchwepheshe be-CT Scanner agcizelela ukuncishiswa komthamo kuyilapho kugcinwa ikhwalithi yesithombe. Amasistimu e-CT Scanner athuthukisiwe manje ahlanganisa ama-algorithms okwakha kabusha aphindaphindayo kanye nobuhlakani bokwenziwa ukuze kuthuthukiswe izithombe ezitholwe ngemithamo ephansi yemisebe. Nokho, lobu buchwepheshe obuyindida be-CT Scanner busancike ekubambisaneni kwesiguli ukuze kuzuzwe imiphumela emihle.
Enye inzuzo yokulandela imiyalelo yokubamba umoya ukuncishiswa okungaba khona kwemithamo ye-ejenti ehlukile yocwaningo oluthuthukisiwe lwe-CT Scanner. Uma izithombe zingenawo ama-artifact anyakazayo, izazi ze-radiologist zingakwazi ukuhumusha ngokuzethemba izifundo ngemithamo ephansi yokuqhathanisa, zinciphise ubungozi bemiphumela emibi ehlobene nokuqhathanisa.
Isiphetho
Umyalelo wokubamba umoya ngesikhathi sokuhlolwa kwe-CT Scanner ungase ubonakale umncane, kodwa udlala indima ebalulekile ekuqinisekiseni ukubonwa kwekhwalithi ephezulu yokuxilonga. Kuso sonke lesi sihloko, sihlole ukuthi izindlela ezifanele zokubamba umoya zithuthukisa kanjani ikhwalithi yesithombe se-CT Scanner, zinciphise isidingo sokuphinda ukuhlolwa, futhi ekugcineni zibambe iqhaza ekuxilongeni okunembe kakhudlwana.
