Thechithunzi chowonjezeraadabadwa m'ma 1950s ndipo anali chinthu chabwino kwambiri.Maonekedwe ake adatha mbiri ya kujambula pazithunzi.Zinapangitsa kuti mlingo wa X-ray fluoroscopy uchepe kwambiri panthawiyo, kuphweka kwa katswiri kunakhala bwino kwambiri, ndipo wodwala ndi katswiri adalandira chitetezo chochuluka.
Mofananamo, ndi chitukuko cha teknoloji, zowonjezera zithunzi zafika lero, ndipo pang'onopang'ono zalowa ukalamba, ndipo tsogolo la kusinthidwa lakonzedwa kale.Pogwiritsa ntchito matekinoloje osiyanasiyana osinthika azithunzi, ukadaulo wojambula zithunzi umathetsedwa pang'onopang'ono.
Lero, sindingayamikire kukumbukira kwa chithunzi chowonjezera apa, koma ndingosanthula chifukwa chake chowonjezera chithunzicho chinachotsedwa ndi aliyense.Ndikuganiza kuti pali zifukwa zingapo:
Choyamba: mawonekedwe ojambulira ndi ochepa, ndipo ndi osavuta kuphonya ndikuzindikira molakwika.
Monga momwe tikuonera pachithunzichi pansipa, mbali ya kumanzere ndi chithunzi chopangidwa ndi kuwonjezereka kwa chithunzithunzi cha m'mimba yonse, yomwe ingakhale ndi gawo la gawo loyang'aniridwa mu chimango chimodzi;mbali yakumanja ndi chithunzi chachikulu chomwe chilipo, chomwe chimakhala ndi gawo lonselo Malo onse oyendera m'mimba amatha kukhala osavuta kuwona ndikuzindikira.
Nthawi zonse, mukamagwiritsa ntchito kujambula kowonjezera kusiyanitsa, ndikofunikira kusuntha mosalekeza pomwe pali mthunzi, kutsatira njira yolumikizirana, ndikuyang'anitsitsa nthawi yeniyeni, kuti mugwire bwino malo otupa, koma kuyang'anitsitsa ndi kuthamanga kwachangu kwa wothandizira, ndikosavuta Chipangizocho sichingagwirizane ndi kayendetsedwe kake, kotero sichikhoza kuwonedwa.Mwachitsanzo, mu esophagography, ndizosavuta kuwoneka chodabwitsa cha kuchuluka kwa kusiyana ndi kusuntha kwa wothandizira wosiyanitsa.
Mawonekedwe ang'onoang'ono amajambula akhala chifukwa chofunikira kwambiri cha chitukuko chochepa cha kuwonjezereka kwazithunzi.Ndiye, kodi ndizotheka kukulitsa mthunziwo?M'malo mwake, zitha kuwoneka kuchokera ku mfundo yogwira ntchito yowonjezereka kwa mthunzi kuti pakuwonjezeka kwa mawonekedwe azithunzi, kuchuluka kwa mthunzi wonse kumasinthanso kwambiri, ndipo pamapeto pake sikungagwiritsidwe ntchito mogwirizana ndi makina onse, Kuwonjezeka kwakukulu kwa mthunzi wamakono kumatha kufika mainchesi 12, omwe amagwiritsidwa ntchito kwambiri Zomwe zikuluzikulu ndi 7/9inch.
Chachiŵiri, n’chosavuta kupotozedwa ndi kupotozedwa, ndipo n’chosavuta kuphonya ndi kuchidziwa molakwika.
Chifukwa cha mfundo yake yogwirira ntchito, zowonjezera zithunzi zimakhala zosavuta kusokoneza ndi kusokoneza.Kusokoneza Pali mitundu iwiri ikuluikulu ya kupotoza: imodzi ndi yozungulira yozungulira yozungulira;ina ndi yofanana, yomwe imatchedwa S-distortion.
Chifukwa cha kupotoza kwa geometric ndikuti kuwonetsera kwa chithunzi cha X-ray pamalo opindika kumapanga chithunzi chachikulu cha chinthu chomwe chili panjira yolowera m'mphepete mwa chotchinga cholowera kuposa chapakati.Kusokoneza uku kumagwirizana ndi geometry ya pulogalamu yolowera komanso kusiyanasiyana kwa gwero la X-ray.kudalira malo, kotero kumatchedwa kupotoza kwa geometrical.Lens yokhala ndi kupotoza koyipa idzabwezera pang'onopang'ono kupotoza kwabwino chifukwa cha kupindika kwazithunzi zolowera, motero kumachepetsa kusokoneza kwathunthu kwa chithunzi chotuluka, koma kupotoza sikungapewedwe.
Kusokoneza kwamtundu wina kumatchedwa S-distortion, yomwe imabwera chifukwa cha mawonekedwe a S-mawonekedwe a zinthu za rectilinear, chodabwitsa chomwe chimayambitsidwa ndi kusokonezedwa ndi mphamvu ya maginito yapadziko lapansi kapena maginito osokera kuchokera ku zida zozungulira.
Ndi chifukwa cha kupotoza ndi kupotoza (monga momwe tawonetsera m'munsimu) zomwe zimasokoneza kwambiri zotsatira zowunika zazithunzi za X-ray, zomwe zingayambitse kuphonya kwa matenda ndi matenda olakwika.
Chachitatu, kusiyana kwa fano kumakhala kochepa, komwe kumakhala kosavuta kuphonya ndikuzindikiridwa molakwika.
Pakali pano, kusinthasintha kwazithunzi za X-ray ndi 14-bit kapena 16-bit, pamene mitundu yosinthika yazithunzithunzi ndi 10-bit yokha.Mwa kuyankhula kwina, kusinthasintha kwazinthu zamakono zamakono zamakono ndi 16 nthawi kapena 32 kuposa za filimuyo.
Kusiyanasiyana kosinthika ndi kosiyana, ndipo zotsatira zake ndi monga momwe zilili m'chithunzichi.Mitundu yosinthika kumanzere mwachiwonekere imakhala yoyipa kwambiri kuposa yomwe ili kumanja, kotero kuti fineness ndi mtundu wa chithunzicho ndizosiyana kwambiri.
Chithunzi cha kuwonjezeka kwa mthunzi chikuwonetsedwa mu chithunzi pansipa.Kusiyanasiyana kwa ma bits 10 sikudzakhala kothandiza pakuwunika kwa zotupa zomwe zili ndi kusiyana pang'ono mu kachulukidwe kazithunzi, makamaka pakusintha kwapakhungu komanso kufalikira kwa matenda monga kusintha kwamapapo koyambirira kwa SARS.Sizingazindikiridwe molondola, zomwe zingapangitse kuti muphonye matenda komanso kuti musamadziwe bwino.
Tekinoloje ikusintha tsiku lililonse, ndipo kusintha kwazinthu kukugwedeza dziko.Zowonjezera zithunziadutsa masiku awo aulemerero ndipo afika kumapeto kwa moyo wawo.Payenera kukhala zochulukira zochulukira pakuzindikiritsa zithunzi zachipatala.Kukumbukira zakale ndikuyembekezera zam'tsogolo, chilichonse chidzakhala mbiri.
Ngati muli ndi chidwi ndi katundu wathu, olandiridwa kufunsa.
Nthawi yotumiza: Feb-18-2022