Ukuthwebula izithombe nge-X-ray kuyisisekelo sokuxilongwa kwezokwelapha kwesimanje, okunikeza ulwazi olubalulekile ngesimo sesiguli. Kodwa-ke, ukusebenza kahle kwale ndlela yokuthwebula izithombe kuthinteka kakhulu yimishini esetshenziswayo, ikakhulukazi ama-X-ray collimator. Lawa madivayisi adlala indima ebalulekile ekubumbeni umsebe we-X-ray, okuthinta ngqo ukuphepha kwesiguli kanye nomthamo wemisebe otholwa ngesikhathi senqubo yokuthwebula izithombe.
Ama-collimator e-X-rayzenzelwe ukunciphisa usayizi kanye nesimo somsebe we-X-ray, ukuqinisekisa ukuthi indawo ethakaselwayo kuphela ekhanyiswa ngemisebe. Le ndlela eqondiwe ayithuthukisi nje kuphela ikhwalithi yesithombe ngokunciphisa imisebe ehlakazekile, kodwa futhi inciphisa ukuvezwa okungadingekile ezicutshini ezizungezile. Ngokukhawulela umsebe we-X-ray endaweni ethile ehlolwayo, ama-collimator anganciphisa kakhulu umthamo wemisebe ophelele otholwa yisiguli ngesikhathi senqubo yokuxilonga.
Enye yezinto ezikhathazayo ngezithombe zezokwelapha yizingozi ezingaba khona ezihlobene nokuchayeka emisebeni. Nakuba izinzuzo zezithombe ze-X-ray ngokuvamile zidlula izingozi, kubalulekile ukusebenzisa amasu okuthuthukisa ukuphepha kwesiguli. Ama-X-ray collimators ayingxenye ebalulekile yalawa masu. Ngokwenza ngcono usayizi womsebe, ama-collimators asiza ekuqinisekiseni ukuthi iziguli azichayelwa emisebeni ngokweqile, ngaleyo ndlela zinciphise amathuba ezinkinga ezibangelwa imisebe, njengokulimala kwesikhumba noma ingozi eyengeziwe yomdlavuza.
Ngaphezu kwalokho, ukusetshenziswa kwama-collimator kusiza ukunamathela esimisweni esithi "As Low As Possible Radiation Dose" (ALARA), okuwumthetho oyisisekelo ku-radiology. Lesi simiso sigcizelela ukubaluleka kokunciphisa ukuvezwa kwemisebe ngenkathi kutholwa ulwazi oludingekayo lokuxilonga. Ngokulawula ngempumelelo imisebe ye-X-ray, ama-collimator avumela odokotela be-radiologist ukuthi banamathele esimisweni se-ALARA, baqinisekise ukuthi isiguli sithola umthamo wemisebe ophansi kakhulu ngaphandle kokubeka engcupheni ikhwalithi yezithombe ezikhiqizwayo.
Ngaphezu kokuthuthukisa ukuphepha kwesiguli, ama-X-ray collimators nawo adlala indima ekuthuthukiseni ukusebenza kahle kwezinqubo zokuthwebula izithombe. Ngokunciphisa inani lemisebe esakazekile, ama-collimators angakhiqiza izithombe ezicacile, ngaleyo ndlela anciphise isidingo sokuhlolwa okuphindaphindiwe. Lokhu akugcini nje ngokusindisa isikhathi seziguli kanye nabahlinzeki bezempilo, kodwa futhi kunciphisa nomthamo wemisebe oqongelelekayo iziguli ezingawuthola ngokuhamba kwesikhathi.
Intuthuko yezobuchwepheshe kuma-X-ray collimators nayo iyasiza ekuthuthukiseni ukuphepha kwesiguli. Ama-collimators anamuhla afakwe izici ezifana nokukhawulelwa kwemisebe okuzenzakalelayo kanye nezilungiselelo ezilungisekayo ukulawula ngokunembile imisebe ye-X-ray. Lokhu kusungula izinto ezintsha kuvumela ochwepheshe bezempilo ukuthi bahlele inqubo yokuthwebula izithombe ngokwezidingo ezithile zesiguli ngasinye, baqinisekise ukuphepha okuphezulu kanye nokuvezwa kwemisebe okuncane.
Ngokufigqiwe,Ama-collimator e-X-rayziyisici esibalulekile sokuthwebula izithombe zezokwelapha futhi zinomthelela omkhulu ekuphepheni kwesiguli kanye nomthamo wemisebe. Ngokugcina ngempumelelo umsebe we-X-ray endaweni ethandwayo, ama-collimator awathuthukisi nje kuphela ikhwalithi yesithombe kodwa futhi anciphisa ukuvezwa kwemisebe okungadingekile ezicutshini ezizungezile. Indima yawo ekunamatheleni esimisweni se-ALARA igcizelela ukubaluleka kwawo ku-radiology yesimanje. Njengoba ubuchwepheshe buqhubeka nokuthuthuka, ukuthuthukiswa okuqhubekayo kanye nokusetshenziswa kwama-collimator e-X-ray kusalokhu kubalulekile ekuqinisekiseni ukuphepha kanye nenhlalakahle yeziguli ezithola izinqubo zokuthwebula izithombe zokuxilonga.
Isikhathi sokuthunyelwe: Novemba-18-2024