Zithini iindawo ze-panoramic x-ray?

 

1) Inkqubo Yokuvelisa i-X-reyi

Ityhubhu ye-X-ray yamazinyo ePanoramic (umz., iTOSHIBA D-051)

Ityhubhu yeyona ntliziyo yenkqubo. Iguqula amandla ombane abe yi-X-ray isebenzisa:

• I-Cathode/intamboukukhupha ii-electron
• I-anode/ithagethiukuvelisa ii-X-reyi xa ii-electron zibetha
• Izindlu zeetyhubhukunye nesikhuselo kunye neoyile yokukhusela nokulawula ubushushu

Kwimisebenzi ye-panoramic, ityhubhu kufuneka ixhase imveliso ezinzileyo kuyo yonke imbonakalo ephindaphindwayo. Ngokwezonyango, ukuzinza kuchaphazela uxinano lomfanekiso kunye nomahluko; ngokusebenza, kuchaphazela amazinga okuthathwa kwakhona kunye nobomi betyhubhu.

Oko abathengi badla ngokukuvavanya kwiItyhubhu ye-X-ray yamazinyo ebanzi(kubandakanya iimodeli ezifanaTOSHIBA D-051) ibandakanya:

• Uzinzo lwendawo egxile kwingqwalasela(inceda ukugcina ubukhali)
• Ukusebenza kobushushu(ukusebenza okuthembekileyo kwiikliniki ezixakekileyo)
• Ukuhambelanakunye nejenereyitha kunye nokuxhonywa koomatshini kweyunithi yepanoramic

Nokuba ukuphuculwa okuncinci ekuzinzeni kwetyhubhu kunokunciphisa ukuphinda kuthathwe. Umzekelo, ukunciphisa ukuphindaphinda ukusuka kwi-5% ukuya kwi-2% kwikliniki enomthamo omkhulu kuphucula ngokuthe ngqo ukuphuma kwegazi kwaye kunciphisa ukuvezwa kwemisebe kwizigulane.

Ijenereyitha yeVolthi ephezulu

Le modyuli inika:

• i-kV (i-voltage yetyhubhu): ilawula amandla okukhanya kunye nokungena
• mA (umsinga wetyhubhu)kunye nexesha lokuvezwa: lawula idosi kunye noxinano lomfanekiso

Iinkqubo ezininzi zepanoramic zisebenza kwiindawo ezifana60–90 kVkwaye2–10 mAkuxhomekeke kubungakanani besigulana kunye nendlela yokufota. Ukuphuma rhoqo kwejenereyitha kubalulekile; ukutyibilika okanye i-ripple ingabonakala njengokukhanya okungaguqukiyo okanye ingxolo.

2) Ukubumba imiqadi kunye noLawulo lweDosi

I-Collimator kunye ne-Filtration

• I-Collimatorinciphisa umqadi ube yijiyometri efunekayo (idla ngokuba ngumngxuma othe nkqo obhityileyo wokuhamba kwe-panoramic).
• Ukuhluza(eyongeziweyo i-aluminium equivalent) isusa ii-photon ezingenamandla aneleyo ezonyusa umthamo ngaphandle kokuphucula umgangatho womfanekiso.

Inzuzo esebenzisekayo: ukuhluzwa okungcono kunye nokudibanisa izinto kunokunciphisa ukuvezwa okungeyomfuneko ngelixa kugcinwa iinkcukacha zokuxilongwa—ezibalulekileyo ekuthobeleni imithetho kunye nokuzithemba kwesigulana.

Ulawulo Lokuchaphazelwa/i-AEC (ukuba ixhotyisiwe)

Ezinye iiyunithi ziquka iimpawu zokuzivelela ngokuzenzekelayo ezilungisa imveliso ngokobungakanani besigulana, ziphucula ukuhambelana kwazo kwaye zincede ekunciphiseni ukuphinda zithathwe.

3) Inkqubo yokuHamba koomatshini

Iyunithi ye-panoramic ayisiyo i-X-ray engashukumiyo. Umfanekiso wenziwa ngelixa i-tubehead kunye ne-detector zijikeleza umguli.

Izinto eziphambili:

• Ingalo/igantry ejikelezayo
• Iimoto, iibhanti/iigiya, kunye neekhowudi
• Iiringi zokutyibilika okanye inkqubo yolawulo lwentambo

Ii-encoders kunye nokulinganiswa kwentshukumo kubaluleke kakhulu kuba ubukhali be-panoramic buxhomekeke kwintshukumo ehambelanayo. Ukuba indlela yentshukumo ayisebenzi, ungabona ukugqwetheka, iimpazamo zokukhulisa, okanye i-anatomy engacacanga—iingxaki zihlala zichazwa gwenxa kwityhubhu xa unobangela ulungelelwaniso loomatshini.

4) Inkqubo ye-Image Receptor

Ngokuxhomekeke ekudalweni kwezixhobo:

• Izinzwa zedijithali(i-CCD/CMOS/flat-panel) ilawula iinkqubo zanamhlanje
• Iinkqubo ezindala zingasebenzisaIipleyiti zePSPokanye ii-receptors ezisekelwe kwifilimu

Izinto ezibangela ukusebenza kakuhle abathengi abazikhathaleleyo:

• Isisombululo sendawo(ukubonakala kweenkcukacha)
• Ukusebenza kwengxolo(ubuchule bedosi ephantsi)
• Uluhlu olutshintshayo(ijongana nobunzima obahlukeneyo kwi-anatomy yomhlathi)

Iinkqubo zedijithali zinokuphucula indlela yokusebenza ngokufinyeza ixesha lokufumana-ukuya ekubukeni libe yimizuzwana, nto leyo eyinzuzo yokuvelisa enokulinganiswa kwimisebenzi yezihlalo ezininzi.