I-Crystal ye-scintillation
(I-Sub Surface Laser Engraving)
Ama-detectors asekelwe ku-scintillation, kusetshenziswa ama-pixelated crystal scintillator, kukhonaesetshenziswa kabanzi ukuthola izinhlayiyana nemisebe, kufaka phakathiIzikena ze-positron emission tomography (PET)..
Ngokungeza izici eziqondisa ukukhanya kukristalu, ukulungiswa kwendawo komtshinaingathuthukiswa ibe yi-millimeter esikalini, ithuthukise ukucaca okuphelele kwe-tomograph.
Nokho, indlela yendabuko yepixelating ngokomzimbaamakristalu ainqubo eyinkimbinkimbi, ebizayo, futhi ekhandlayo. Ukwengeza, ingxenye yokupakisha nokuzwela komtshinakungaba sengoziningenxa yeizinto ezibonakalayo ezingabonakali ezisetshenziswayo.
Ungabuka Iphepha Locwaningo Loqobo Lapha. (Kusuka ku-ResearchGate)
I-Subsurface Laser Engraving yeI-Crystal ye-scintillation
Enye indlela ukusebenzisai-subsurface laser engraving (SSLE) amasuamakristalu e-scintillator.
Ngokugxilisa i-laser ngaphakathi kwekristalu, ukushisa kukhiqizweingakha iphethini elawulwayo yama-microcrackslokhosebenza njengezakhiwo ezikhanyayo, ukudala ngempumeleloamaphikseli aqondisa ukukhanyangaphandle kwesidingo sokuhlukana ngokomzimba.
1. Akukho pixelation ebonakalayo yekristalu edingekayo,ukunciphisa ubunzima kanye nezindleko.
2. Izici ze-optical kanye nejometri yezakhiwo ezikhanyayo zingabakulawulwa ngokunembile, okuvumela ukuklanywa komumo nosayizi bephikseli ngokwezifiso.
3. Ukufunda kanye nesakhiwo somtshinahlala ufana nowokuhlelwa kwe-pixelated okujwayelekile.
I-Laser Engraving Process (SSLE) ye-Scintillator Crystal
Inqubo yokuqopha ye-SSLE ibandakanyaizinyathelo ezilandelayo:
1. Umklamo:
Ukulingisa kanye nomklamo wei-pixel architecture oyifunayo, kuhlanganiseizilinganisofuthiizici ze-optical.
2. Imodeli ye-CAD:
Ukudalwa kwe-aimodeli enemininingwane ye-CADukusabalalisa kwe-microcrack,ngokusekelwe emiphumeleni yokulingisafuthilaser engraving imininingwane.
3. Qala Ukuqopha:
Ukuqoshwa kwangempela kwekristalu ye-LYSO kusetshenziswa uhlelo lwe-laser,iqondiswa imodeli ye-CAD.
Inqubo Yokuthuthukisa I-SSLE: (A)Imodeli Yokulingisa, (B)Imodeli ye-CAD, (C) Eqoshwe i-LYSO, (D)Umdwebo Wesikhukhula sasensimini
4. Ukuhlolwa Kwemiphumela:
Ukuhlolwa kokusebenza kwekristalu eqoshiwe kusetshenziswa aisithombe senkundla yezikhukhulafuthiUkulinganisa kwe-Gaussianukuhlola ikhwalithi ye-pixel nokulungiswa kwendawo.
I-Subsurface Laser Engraving ICHAZWE emizuzwini emi-2
Isubsurface laser engraving inquboamakristalu e-scintillator anikeza aindlela yokuguqulaekufanekisweni kwalezi zinto zokwakha.
Ngokunikeza ukulawula okunembile phezu kwezici ze-optical kanye nejometri yezakhiwo ezikhanyayo, le ndlelainika amandla ukuthuthukiswa kwezakhiwo zomtshina ezintshangeukulungiswa kwendawo nokusebenza okuthuthukisiwe, konkengaphandleisidingo se-pixelation ebonakalayo eyinkimbinkimbi futhi ebizayo.
Ufuna ukwazi okwengeziwe mayelana:
I-Subsurface Laser Engraving Scintillation Crystal?
Okutholakele kwe-SSLE Scintillation Crystal
1. Ukukhiqiza Okukhanyayo Okuthuthukisiwe
Kwesokunxele: Ukubuka Konke Kwe-Surface Reflectivity Asymmetry DoI.
Kwesokudla: I-Pixel Displacement DoI.
Ukuqhathaniswa kwama-pulses phakathii-subsurface laser eqoshiwe (SSLE) arraysfuthiama-array ajwayelekileukhombisa aisivuno esingcono kakhulu sokukhanya se-SSLE.
Lokhu kungenzeka ngenxa ye-ukungabi khona kwezibonisi zepulasitikiphakathi kwamaphikseli, okungabangela ukungafani kokubona nokulahlekelwa kwesithombe.
Isivuno sokukhanya esithuthukisiwe sishoukukhanya okwengeziwe kwamapulses wamandla afanayo, ukwenza i-SSLE isici esifiselekayo.
2. Ukuziphatha Kwesikhathi Okuthuthukisiwe
Isithombe se-Scintillation Crystal
Ubude bekristalu buno-aumthelela omubi ngesikhathi, okubalulekile ezinhlelweni zokusebenza ze-Positron Emission Tomography (PET).
Nokho, iukuzwela okuphezulu kwamakristalu e-SSLEivumela ukusetshenziswa kweamakristalu amafushane, okungabathuthukisa ukuziphatha kwesikhathi kwesistimu.
Ukulingisa kuphinde kwaphakamisa ukuthi umumo wephikseli ohlukile, njenge-hexagonal noma i-dodecagonal, kungenzekakuholela ekusebenzeni okungcono kokuqondisa ukukhanya nokusebenza kwesikhathi, efana nemigomo ye-optical fibers.
3. Izinzuzo Ezingabizi
Isithombe seScintillator Crystal
Uma kuqhathaniswa namabhulokhi e-monolithic, intengo yamakristalu e-SSLEkungaba ngaphansi njengobaingxenye yesithathuwezindlekoyamalungu afanayo amaphikiseli, kuye ngobukhulu bephikseli.
Ngaphezu kwalokho, i-ukuzwela okuphezulu kwamakristalu e-SSLEivumelaukusetshenziswa kwamakristalu amafushane, ngokuqhubekayo ukunciphisa izindleko zizonke.
Indlela ye-SSLE idinga amandla e-laser aphansi uma kuqhathaniswa nokusika kwe-laser, ukuvumelaamasistimu e-SSLE angabizi kakhuluuma kuqhathaniswa nezindawo zokuncibilika kwe-laser noma zokusika.
Iutshalomali lokuqala kwingqalasizinda nokuqeqeshwaye-SSLE nayo iphansi kakhulukunezindleko zokuthuthukisa umtshina we-PET.
4. Ukuvumelana nezimo nokuklama ngokwezifiso
Inqubo yokuqopha amakristalu e-SSLEakudli isikhathi, ngokulinganisaImizuzu engu-15okudingekayo ukuze kuqoshwe 12.8x12.8x12 mm, 3-crystal array.
Iimvelo eguquguqukayo, ukuphumelela kwezindleko, futhilula ukulungisa amakristalu e-SSLE, kanye naboingxenyana yokupakisha ephezulu, nxephezela iukulungiswa kwendawo okungaphansi kancaneuma kuqhathaniswa namalungu afanayo amaphikiseli ajwayelekile.
I-Non-Conventional Pixel Geometries
I-SSLE ivumela ukuhlolwa kweamajiyometri wephikseli angajwayelekile, okwenza amaphikseli acwebezelayo abeifaniswe ngokunembile nezidingo ezithile zohlelo lokusebenza ngalunye, njengama-collimator noma ubukhulu bamaphikseli e-silicon photomultiplier.
Ukwabelana Ngokukhanya Okulawulwayo
Ukwabelana ngokukhanya okulawulwayo kungafinyelelwa ngokuguqulwa okunembile kwezici ze-optical yezindawo eziqoshiwe,ukwenza kube lula ukwenziwa kwe-miniaturization yama-gamma detectors.
Imiklamo Engavamile
Imiklamo engavamile, njenge-Voronoi tessellations, ingabaaqoshwe kalula ngaphakathi kwamakristalu e-monolithic. Ngaphezu kwalokho, ukusatshalaliswa okungahleliwe kosayizi wamaphikseli kunganika amandla ukwethulwa kwamasu okuzwa acindezelwe, kusizakala ngokwabelana ngokukhanya okubanzi.
Imishini ye-Subsurface Laser Engraving
Inhliziyo yokudalwa kwe-Subsurface Laser ilele emshinini wokuqopha nge-laser. Le mishini iyasebenzai-laser eluhlaza enamandla amakhulu, eyenzelwe ngokukhethekilesubsurface laser engraving in crystal.
IOne & Only Solutionuyoke udinge i-Subsurface Laser Engraving.
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3D Crystal Laser Engraving Machine(SSLE)
Nge-Subsurface Laser Engraving,ukunemba kubalulekilengokudala ukuqoshwa okuningiliziwe nokuyinkimbinkimbi. I-laser's focused beamisebenzisana ngokuqondilengesakhiwo sangaphakathi sekristalu,ukudala isithombe se-3D.
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