Isesengura ryibipimo ngenderwaho nicyitegererezo cyo gusuzuma ubuziranenge bwibitekerezo bya Shone

Gutezimbere panel banze uruhare rukomeye muri radiografiya (DR), nkuko ishusho yabo igira ingaruka muburyo buzirikana ukuri kandi neza. Ubwiza bwa Panel Panel Statection amashusho mubisanzwe yapimwe nuburyo bwo kwimura imikorere (MTF) na QQE). Ibikurikira ni isesengura rirambuye kuri ibi bipimo byombi kandi ibintu bigira ingaruka kuri dqe:

1, Kwimura Guhindura Imikorere (MTF)

Guhindura imikorere (MTF) nubushobozi bwa sisitemu yo kubyara uburyo bwimibare ya spatial bwikintu. Irerekana ubushobozi bwa sisitemu yo gutandukanya ibisobanuro birambuye. Sisitemu nziza yo gushushanya isaba kubyara amakuru ya 100% yikintu cyakozwe, ariko mubyukuri, kubera agaciro ka MTF ahora ari munsi ya 1. Imbaraga za sisitemu ya MTF Kuri sisitemu ya Digital X-ray imagisi, kugirango usuzume ubuziranenge bwibitekerezo, birakenewe kubara predf mtf idakozwe muburyo butagaragara neza kandi busanzwe kuri sisitemu.

2, quamUm ihinduka imikorere (DQE)

Guhinduka kwa Quanim Gukora neza (DQE) ni uburyo bwo kohereza ibicuruzwa bya sisitemu ya sisitemu hamwe nurusaku rwinjiza kugirango bisohore, bigaragazwa nkijanisha. Irerekana sensitivite, urusaku, x-ray dose, hamwe nubucucike bwo gukemura Panel Panel Statector. Agaciro ka DQE, imbaraga zikomeye zubushobozi bwo gutandukanya itandukaniro mubucucike.

Ibintu bigira ingaruka kuri dqe

Guhangana ibikoresho bya scintillation: Muri Amorhous Silicon Flat Strenes, ifuro yibikoresho bya scintillation nimwe mubintu byingenzi bigira ingaruka kuri dqe. Hariho ubwoko bubiri busanzwe bwibikoresho byo kwirukana scintillator: CSIUM SEDide (CSI) na gadolinium oxysulfide (GD ₂ o ₂ s). Cesium Iyode ifite ubushobozi bukomeye bwo guhindura x-imirasire mumicyo igaragara kurenza gaadinium oxysulfide, ariko ku giciro cyo hejuru. Gutunganya Cesium iyo imiterere yinkingi irashobora kongera ubushobozi bwo gufata x-imirasire no kugabanya urumuri rwatatanye. Detector yatembye hamwe na gadolinium oxyside ifite igipimo cyihuse, imikorere ihamye, nigiciro cyo hasi, ariko ihinduka ryayo ntabwo ari byinshi nkibya fesium gitelete.

Abasemuzi: uburyo urumuri rugaragara rubyakozwe na sconintillators ruhindurwa mubimenyetso by'amashanyarazi birashobora kandi kugira ingaruka kuri dqe. Mu imanza zingana nimiterere ya Cesium iyode (cyangwa gadolinium oxysulfide) + umucyo wa TFTS urashobora gukorwa kuri TICY OATSIT NTA BIKORWA BIKURIKIRA, hamwe na Photon Igihombo cya DQE. Muri Amorphous Selenium Selenium igorofa ya Panel, ihinduka rya X-imirasire mu bimenyetso by'amashanyarazi biterwa na Amorfuus Selelen, kandi urwego rwa DQUE rushingiye ku bushobozi bwa amorfuus selegium.

Mubyongeyeho, kubusa bumwe bwa paneka ihagaze, dqe yayo iratandukanye muburyo butandukanye bwimyanzuro itandukanye. DQE ikabije iri hejuru, ariko ntibisobanura ko DQe ari ndende kubitekerezo byose. Itondekanya kubara kuri DQE ni: DQE = S ² × mtf ² / (NPS × x × xs ni ikigereranyo cya sisitemu, NPS ari ingufu za sisitemu, kandi C ni coefficient ya X-ray.

　3, kugereranya na amorphous silicon na amorphous selenium ecran

Ibipimo byavutse ku miryango mpuzamahanga byerekana ko ugereranije na Amorphouson Flat Pereneteri, Amorphous Selenium Flan and Flan abenderahamwe ya Fliene ifite indangagaciro za MTF nziza. Mugihe imyanzuro yiyongera, MTF ya Amorphous Silicon Flat Perenet igabanuka vuba, mugihe cya Amorphous Selenium igorofa yinyuma ya polisi ishobora gukomeza kugumana indangagaciro nziza za MTF. Ibi bifitanye isano rya bugufi namahame yerekana amashusho ya Amorphous Selenium Flan yashizweho neza yagaragaye mu buryo butaziguye ibyabaye X-Ray Photons mu bimenyetso by'amashanyarazi. Amorphous Selenium Pronect Plan Shotes ntabwo itanga cyangwa asatanya urumuri rugaragara, niyo mpamvu bashobora kugera kubikorwa byo hejuru no kwerekana amashusho meza.

Muri make, imiterere yishusho ya pentemu iringaniye yibasiwe nibintu bitandukanye, muri ibyo MTF na DQE nibipimo bibiri byingenzi byo gupima. Gusobanukirwa no kumenya ibyo bipimo nibintu bigira ingaruka kuri dqe birashobora kudufasha guhitamo neza no gukoresha ibihano bihwanye na hamwe, bityo bigatuma ubuzima bwiza bwo gushushanya no gusuzuma.