Umehluko phakathiiziqinisekiso zesithombefuthiama-detectors ama-flat panel.Emkhakheni weizithombe zezokwelapha, ama-X ray anendima ebalulekile ekuxilongeni nasekwelapheni izifo nokulimala okuhlukahlukene.Intuthuko kwezobuchwepheshe iholele ekuthuthukisweni kwemishini yokuthwebula izithombe ye-X-ray eyinkimbinkimbi.Izindlela ezintsha ezimbili ezinjengalezi iziqinisekisi zesithombe nezitholi zamaphaneli ayisicaba.Nakuba zombili ziklanyelwe ukuthuthukisa izithombe ze-X-ray, kunomehluko omkhulu phakathi kwalezi zindlela ezimbili zobuchwepheshe.
Ukuze siqonde umehluko, ake siqale ngeziqinisi zesithombe.Ama-intensifiers wesithombe amadivaysi e-electro-optical avame ukusetshenziswa emkhakheni we-radiology.Umsebenzi wabo oyinhloko ukuthuthukisa izithombe ze-X-ray, zibonakale zikhanya futhi zinemininingwane eyengeziwe.Umgomo wokusebenza kwesiqinisi sesithombe ukuguqula ama-photon e-X-ray abe ama-photon akhanyayo abonakalayo, okwandisa ukushuba kwesithombe se-X-ray sokuqala.
Ingxenye eyinhloko yesiqiniseko sesithombe i-phosphor yokufaka, edonsa ama-photon e-X-ray futhi ikhiphe ama-photon akhanyayo abonakalayo.Lawa ma-photon ayasheshiswa futhi agxile ku-phosphor ephumayo, enza isithombe esikhulisiwe.Lesi sithombe esikhulisiwe singabe sesithwetshulwa ikhamera noma siboniswe kusiqapha ngezinjongo zokuxilonga.Iziqinisekiso zesithombe zisebenza kahle kakhulu ekunikezeni izithombe zesikhathi sangempela futhi zilungele izinqubo ezidinga izithombe zesikhathi sangempela, njenge-fluoroscopy.
Izihloli zephaneli eziyisicaba (ama-FPD) seziphenduke enye indlela yokuqinisa isithombe.Izitholi zephaneli eyisicaba zingamathuluzi esimo esiqinile athwebula ngokuqondile izithombe ze-X-ray futhi aziguqule zibe amasignali edijithali.Ngokungafani neziqinisi zesithombe, ama-FPD awathembeli ekuguquleni ama-photon e-X-ray abe ama-photon akhanyayo abonakalayo.Basebenzisa ama- thin-film transistors (TFTs) ukuze baguqule izithombe ze-X-ray zibe izimpawu zikagesi.
Inzuzo enkulu yezitholi zamaphaneli ayisicaba yikhono lokuthwebula izithombe zedijithali ezinokulungiswa okuphezulu ngokugqama okuthuthukisiwe kanye nobubanzi obuguqukayo.Lezi zimpawu zedijithali zingasetshenzwa ngokuqondile futhi ziboniswe kukhompuyutha ukuze zihlaziywe ngokushesha.Izitholi zephaneli eyisicaba nazo zinikeza inkambu enkulu yokubuka kanye nokusebenza kahle kwe-quantum (DQE) ephezulu uma kuqhathaniswa neziqinisekisi zesithombe, okuholela ekuthuthukisweni kwekhwalithi yesithombe.
Izitholi zephaneli eyisicaba zinikeza izinzuzo ezibalulekile ekuguquguqukeni nasekusebenziseni izinto ezihlukahlukene.Angakwazi ukuhlanganiswa kalula ezinhlelweni ezikhona ze-X-ray, esikhundleni seziqinisi zesithombe esivamile ngaphandle kokulungiswa okubanzi.
Umehluko phakathiIziqinisekisi zesithombe ze-X-rayfuthi imitshina yamaphaneli ayisicaba ikubuchwepheshe bawo obuyisisekelo kanye nokusebenza kwawo.Iziqinisekiso zesithombe zikhulisa izithombe ze-X-ray ngokuguqula ama-X-ray photon abe ama-photon akhanyayo abonakalayo, kuyilapho izitholi zephaneli eyisicaba zithwebula ngokuqondile izithombe ze-X-ray futhi ziziguqule zibe amasignali edijithali.Zombili lezi zindlela zinezinzuzo nezinkinga zazo, futhi ukukhetha phakathi kwazo kuncike ezidingweni ezithile zezithombe, ukucatshangelwa kwezindleko, kanye nezinga lekhwalithi yesithombe edingekayo.Kokubili iziqinisi zesithombe kanye nezitholi zephaneli eyisicaba zisiza ukuqhubekisela phambili umkhakha wesithombe se-X-ray futhi zithuthukise ukunakekelwa kwesiguli.
Isikhathi sokuthumela: Sep-13-2023