Crystal Scintillation
(Sub Surface Laser Engraving)
Cov khoom siv ntes scintillationsiv cov pixelated inorganic crystal scintillators,siv dav rau kev kuaj pom cov khoom me me thiab hluav taws xob, suav nrog hauvcov tshuab luam theej positron emission tomography (PET).
Los ntawm kev ntxiv cov yam ntxwv coj teeb rau lub siv lead ua, qhov kev daws teeb meem ntawm lub tshuab ntestuaj yeem txhim kho mus rau qhov ntsuas millimeter, txhim kho qhov kev daws teeb meem tag nrho ntawm lub tomograph.
Txawm li cas los xij, txoj kev ib txwm muaj ntawmlub cev pixelatingcov crystals yog ib qhotxheej txheem nyuaj, kim, thiab siv zogTsis tas li ntawd xwb, qhov ntim khoom thiab qhov rhiab heev ntawm lub tshuab ntestuaj yeem raug cuam tshuamvim yog qhovsiv cov ntaub ntawv uas tsis yog scintillating reflective.
Koj tuaj yeem saib daim ntawv tshawb fawb thawj zaug ntawm no. (Los ntawm ResearchGate)
Laser Engraving rau SubsurfaceCrystal Scintillation
Lwm txoj hauv kev yog siv covCov txheej txheem laser engraving hauv qab (SSLE)rau cov siv lead ua scintillator.
Los ntawm kev tsom lub laser rau hauv lub siv lead ua, lub cua sov tsim tawmtuaj yeem tsim cov qauv tswj hwm ntawm microcrackstiasua raws li cov qauv kev cuam tshuam, tsim kom zoocov pixels coj teeb pom kev zootsis tas yuav tsum sib cais lub cev.
1. Tsis tas yuav tsum muaj pixelation ntawm lub siv lead ua.txo qhov nyuaj thiab tus nqi.
2. Cov yam ntxwv ntawm qhov muag pom thiab geometry ntawm cov qauv reflective tuaj yeem ua tautswj tau meej heev, ua kom muaj peev xwm tsim cov duab pixel thiab qhov ntau thiab tsawg.
3. Kev nyeem ntawv thiab kev ntes qauvtseem zoo ib yam li cov qauv pixelated arrays.
Cov Txheej Txheem Laser Engraving (SSLE) rau Scintillator Crystal
Cov txheej txheem kos duab SSLE suav nrogcov kauj ruam nram qab no:
1. Tus Qauv Tsim:
Kev simulation thiab kev tsim qauv ntawmxav tau pixel architecture, suav nrogqhov ntevthiabcov yam ntxwv kho qhov muag.
2. Tus Qauv CAD:
Kev tsim ntawm ib qhoqauv CAD ntxaws ntxawsntawm qhov kev faib tawm ntawm microcrack,raws li cov txiaj ntsig simulationthiabcov lus qhia ntawm laser engraving.
3. Pib Txiav:
Kev kos duab tiag tiag ntawm LYSO siv lub tshuab laser,coj los ntawm tus qauv CAD.
Cov Txheej Txheem Tsim SSLE: (A) Qauv Simulation, (B) Qauv CAD, (C) Engraved LYSO, (D) Daim Duab Dej Nyab Hauv Tebchaws
4. Kev Ntsuam Xyuas Qhov Tshwm Sim:
Kev ntsuam xyuas ntawm kev ua haujlwm ntawm cov siv lead ua los ntawm engraved siv adaim duab teb dej nyabthiabGaussian fittinglos ntsuas qhov zoo ntawm pixel thiab qhov kev daws teeb meem ntawm qhov chaw.
Kev Txiav Laser Hauv Av Hauv Qab Av PIAV TXOG Hauv 2 Feeb
Lubkev siv laser engraving hauv qab avrau cov siv lead ua scintillator muaj ib qhotxoj kev hloov pauvrau pixelation ntawm cov ntaub ntawv no.
Los ntawm kev muab kev tswj hwm meej rau cov yam ntxwv kho qhov muag thiab geometry ntawm cov qauv reflective, txoj kev noua rau muaj kev txhim kho cov qauv tsim tshiab ntawm cov cuab yeej ntesnrogkev daws teeb meem thiab kev ua tau zoo dua qub, tag nrhotsis muajqhov xav tau kev ua pixelation nyuaj thiab kim heev.
Xav Paub Ntxiv Txog:
Subsurface Laser Engraving Scintillation Crystal?
Cov Kev Tshawb Pom rau SSLE Scintillation Crystal
1. Txhim kho lub teeb pom kev zoo
Sab laug: Engraved Surface Reflectivity Asymmetry DoI Txheej txheem cej luam.
Txoj Cai: Pixel Displacement DoI.
Kev sib piv ntawm cov pulses ntawmCov arrays laser engraved hauv qab (SSLE)thiabcov arrays ib txwm muajqhia tau tias muaj ib qhozoo dua lub teeb pom kev zoo rau SSLE.
Qhov no yuav yog vim muajtsis muaj cov yas reflectorsntawm cov pixels, uas tuaj yeem ua rau qhov muag tsis sib xws thiab photon poob.
Qhov ua kom lub teeb ci zoo dua txhais tau tiasntau lub teeb rau tib lub zog pulses, ua rau SSLE yog ib qho yam ntxwv zoo.
2. Kev coj cwj pwm zoo dua thaum lub sijhawm teem tseg
Ib Daim Duab ntawm Scintillation Crystal
Crystal ntev muaj ibkev cuam tshuam tsis zoo rau lub sijhawm, uas yog qhov tseem ceeb rau Positron Emission Tomography (PET) daim ntawv thov.
Txawm li cas los xij, qhovkev nkag siab ntau dua ntawm SSLE crystalstso cai rau kev sivcov pob zeb luv luv, uas tuaj yeemtxhim kho tus cwj pwm lub sijhawm ntawm lub system.
Cov kev simulation kuj tau qhia tias cov duab pixel sib txawv, xws li hexagonal lossis dodecagonal, tej zaum yuavua rau muaj kev coj teeb pom kev zoo dua thiab kev ua haujlwm raws sijhawm, zoo ib yam li cov ntsiab cai ntawm cov fibers optical.
3. Cov txiaj ntsig zoo thiab pheej yig
Ib Daim Duab ntawm Scintillator Crystal
Piv rau cov monolithic blocks, tus nqi ntawm SSLE crystalsyuav qis liib feem pebntawm tus nqintawm cov pixelated array sib xws, nyob ntawm qhov loj ntawm pixel.
Tsis tas li ntawd xwb, qhovkev nkag siab ntau dua ntawm SSLE crystalstso cai raukev siv cov siv lead ua luv luv, txo qhov nqi tag nrho ntxiv.
Cov txheej txheem SSLE xav tau lub zog laser qis dua piv rau kev txiav laser, uas tso cai rauCov txheej txheem SSLE pheej yig duapiv rau laser melting lossis txiav cov chaw.
Lubkev nqis peev thawj zaug rau hauv kev tsim kho vaj tse thiab kev cob qhiarau SSLE kuj tseem qis duadua li tus nqi ntawm kev tsim lub tshuab ntes PET.
4. Kev Tsim Qauv Yooj Yim thiab Kev Kho Kom Haum
Cov txheej txheem ntawm kev kos duab SSLE crystals yogtsis siv sijhawm ntev, nrog rau qhov kwv yees li15 feebxav tau los kos ib qho 12.8x12.8x12 mm, 3-crystal array.
Lubyam ntxwv hloov tau yooj yim, kev siv nyiaj tsim nyog, thiabyooj yim ntawm kev npaj cov SSLE crystalsnrog lawv,feem ntim khoom zoo dua, them nyiaj rau qhovqhov kev daws teeb meem me ntsis qis duapiv rau cov qauv pixelated arrays.
Cov Duab Pixel Tsis Zoo Li Ib Txwm Muaj
SSLE tso cai rau kev tshawb nrhiav cov ntaub ntawvcov duab pixel tsis zoo li qub, ua kom cov pixels ci ntsa iab los uaphim raws nraim rau cov kev cai tshwj xeeb ntawm txhua daim ntawv thov, xws li collimators lossis qhov ntev ntawm silicon photomultiplier pixels.
Kev Sib Koom Teeb Pom Kev Zoo
Kev tswj hwm lub teeb sib koom ua tau los ntawm kev tswj hwm qhov tseeb ntawm cov yam ntxwv pom ntawm cov nplaim engraved,ua kom yooj yim dua miniaturization ntawm gamma detectors.
Cov Qauv Txawv Txawv
Cov qauv tsim txawv teb chaws, xws li Voronoi tessellations, tuaj yeem ua tauyooj yim engraved hauv monolithic crystalsTsis tas li ntawd xwb, kev faib tawm ntawm cov pixel loj tuaj yeem ua rau muaj kev qhia txog cov txheej txheem compressed sensing, siv qhov zoo ntawm kev sib koom lub teeb ntau heev.
Cov Tshuab Rau Kev Txiav Laser Hauv Av
Lub plawv ntawm Subsurface Laser tsim nyob rau hauv lub tshuab laser engraving. Cov tshuab no sivlub laser ntsuab muaj zog heev, tsim tshwj xeeb raulaser engraving hauv qab av hauv siv lead ua.
LubIb & Tsuas Yog Kev Dais Teeb Meemkoj yuav xav tau rau Subsurface Laser Engraving.
Kev txhawb nqa6 Kev Teeb Tsa Sib Txawv
Los ntawmTus Neeg Ua Si Me Me to Kev Tsim Khoom Loj
Qhov Chaw Tseeb Dua at <10μm
Kev Phais Mob Kom Tseebrau 3D Laser Carving
3D Crystal Laser Engraving Tshuab(SSLE)
Rau Kev Txiav Laser Hauv Av,qhov tseeb yog qhov tseem ceebrau kev tsim cov duab kos kom ntxaws thiab zoo nkauj. Lub teeb laser tsom mus rausib cuam tshuam meejnrog rau cov qauv sab hauv ntawm lub siv lead ua,tsim cov duab 3D.
Yooj yim nqa, raug thiab siab heev
Lub Cev Laser Me Merau SSLE
Tiv thaiv kev poob siab & Muaj kev nyab xeeb dua rau cov neeg pib tshiab
Kev Txiav Crystal Ceevtxog li 3600 cov ntsiab lus / ob
Kev Sib Txuas Zoohauv Kev Tsim Qauv