MIT Tsim Laser-raws System Rau Kev Tsis Sib cuag

Tsis ntev los no, cov kws tshawb fawb ntawm MIT's Lincoln Laboratory thiab cov neeg koom tes ntawm Massachusetts General Tsev Kho Mob (MGH) Center for Ultrasound Research and Translation (CURT) tau tsim ib yam tshiab ntawm cov cuab yeej kho mob: tsis tiv tauj laser ultrasound (NCLUS).
Qhov no laser-based ultrasound system tau hais kom muab cov duab ntawm lub cev sab hauv xws li lub cev, rog, cov leeg, leeg thiab cov hlab ntsha. Lub kaw lus tseem tuaj yeem ntsuas cov pob txha muaj zog thiab muaj peev xwm taug qab ntau theem ntawm tus kab mob.

"Peb lub tswv yim patented daim tawv nqaij-kev nyab xeeb laser system yog tsim los hloov kho ultrasound los ntawm kev kov yeej cov kev txwv ntawm kev sojntsuam kev sib cuag," piav qhia tus thawj xibfwb Robert Haupt, tus neeg ua haujlwm laus hauv Lincoln Laboratory's Active Optical Systems Group.
Robert Haupt thiab Senior Staff Member Charles Wynn yog cov neeg tsim khoom siv thev naus laus zis, thiab Matthew Stowe, tus thawj coj pab pawg, yog lub luag haujlwm rau kev coj noj coj ua thiab kev saib xyuas ntawm NCLUS txoj haujlwm. rajan Gurjar yog tus thawj coj ntawm kev sib koom ua ke, thiab Jamie Shaw, Bert Green, Brian Boitnott (tam sim no ntawm Stanford University), thiab Jake Jacobsen tau koom tes nrog kev kho qhov muag thiab kho tshuab thiab kev tsim kho.
Thaum lub xeev-of-the-art kev kho mob ultrasound tshuab tuaj yeem paub qhov txawv ntawm cov ntaub so ntswg hauv ob peb millimeters, cov cuab yeej no muaj qee qhov kev txwv. Tsis yog-hu rau laser ultrasound (NCLUS), ntawm qhov tod tes, yuav txo tau qhov kev xav tau ntawm cov kws tshaj lij thiab txo tus neeg teb xov tooj hloov pauv los ntawm kev ua haujlwm tag nrho cov txheej txheem tau txais cov duab ultrasound. Laser positioning tuaj yeem raug tsim dua tshiab, yog li tshem tawm qhov hloov pauv ntawm kev ntsuas dua. Vim tias qhov ntsuas tsis sib cuag, tsis muaj cov ntaub so ntswg hauv zos compaction lossis duab feature distortion txuam nrog nws. Tsis tas li ntawd, zoo ib yam li MRI thiab CT, non-contact laser ultrasound (NCLUS) siv cov cim ntawm daim tawv nqaij los muab ib qho kev ruaj khov ntawm kev siv ua haujlwm los tsim thiab sib piv cov kev soj ntsuam rov qab rau lub sijhawm. Txhawm rau txhawb nqa qhov kev taug qab no, pab pawg kuaj tau tsim software los ua cov duab ultrasound thiab kuaj pom muaj kev hloov pauv ntawm cov duab.
Tsis yog-hu rau laser ultrasound (NCLUS) yuav tsum tsis txhob siv phau ntawv pressurization los yog coupling gel (uas yog yuav tsum tau rau kev sib cuag probes), yog li nws kuj yog zoo haum rau cov neeg mob uas mob los yog rhiab lub cev qhov chaw, nyob rau hauv lub cev tsis taus, los yog muaj kev pheej hmoo. ntawm tus kab mob. Cov cuab yeej no tso cai rau cov neeg mob hlawv lossis raug mob, cov neeg mob uas qhib ncaj qha rau cov ntaub so ntswg sib sib zog nqus thaum lub sijhawm phais, cov menyuam mos ntxov ntxov uas xav tau kev saib xyuas hnyav, cov neeg mob caj dab thiab txha caj qaum, thiab cov neeg mob uas muaj kab mob sib kis.
Siv lub laser pulsed, lub teeb lub zog yog kis los ntawm huab cua mus rau saum npoo ntawm daim tawv nqaij, qhov twg lub teeb yog absorbed sai sai thaum nws nkag mus rau ntawm daim tawv nqaij. Lub teeb mem tes ua rau cov cua sov hauv zos sai thiab sai sai deforms ntawm daim tawv nqaij los ntawm cov txheej txheem thermoelastic, uas nyob rau hauv lem generates ultrasound nthwv dej uas ua raws li ib tug ultrasound qhov chaw-.
Lub teeb mem tes ua kom muaj zog ultrasound txaus ntawm qhov zaus piv rau cov kev kho mob ultrasound tiag tiag tsis ua rau mob rau ntawm daim tawv nqaij. Pab neeg tshawb fawb patented qhov kev xaiv ntawm optical carrier wavelengths, thiab cov txheej txheem photoacoustic yog tsim los tsim ib qho chaw zoo ib yam ntawm ultrasound, ywj siab ntawm daim tawv nqaij xim los yog cov ntaub so ntswg roughness.
Ultrasound echoes rov qab los ntawm hauv cov ntaub so ntswg tshwm sim raws li cov kev vibrations hauv cheeb tsam ntawm daim tawv nqaij, uas yog ntsuas los ntawm lub siab rhiab heev, mob siab rau laser Doppler vibrometer.