kann bhinnata optical susangatata tomography

speckle variance optical coherence tomography (ess. vhee.-oo. tii.) heey karyatmak optical imajingsathiche imaging algoridam aahe. optical coherence tomography hii eka imaging paddhat aahe jee uchch resolution, kholee-nirakaran volumetric pratima prapt karnyasathi qamee-coherence interferometry vaparte. aktacha vapar rakt pravahachya karyatmak pratima ghenyasathi keela jaau shakato, heey tantra optical coherence tomography angiography (aukt-aii) mhanoon olakhale jaate. ess. vhee.-oo. tii. hii aukt-aii. sathee eka paddhat aahe jee micron scalever pravah shodhanyasathi salag midavalelya pratimanchya bhinnatecha vapar karate. uutinche sookshm-pravah mojanyasathi ess. vhee.-oo. tii. chaa vapar keela jaau shakato. visheshtah, dolhyachya drushtipatal aanee coroidal bhagat rakt pravahachi kalpana karnyasathi heey netrashastrat upayukt aahe, jeey roganchya pathophysiologybaddal mahitee pradan karoo shakate.
parichay.
rung fundus chhayachitran, fluoresine angiography (eff. aii.) aanee indocyanine green angiography (aay. see. jee. aii.) yaa drushtipatalatil sookshm-vasculation jaalyanchya pratimechya paddhati aahet. tathapi, yaa paddhatinmadhye tote aahet kaaran tyanna bahya vipareet ghatakancha vapar aavashyak aahe. yavyatirikt, yaa tantrancha vapar karoon midavalelya pratima dvimiteey swarupachya asatat aanee tyamule sakhol mahiticha abhav asato. octche anek fayade aahet jeey vasculation sanrachanechya volumetric imagingsathi aakarshak banavtat. mhanje, aukt uchch avkashiy aanee tatpuratya sankalpanvar sakhol nirakaran kelele sthanikikaran prapt karnyas saksham aahe, tyala bahya virodhabhas ghatakanchi aavashyakta nahee aanee teey aakramak aanee samparkvirahit aahe. 
auktane aukt-aii karnyasathi tantrache eka kutumb tayar kele, jyat speckle variance aukt, fages variance aukt, optical microengiography aanee split-spectrum microengiography yancha samavesh aahe.
speckle variance aukt keval complexes aukt signalchi amplitude mahitee vaparte, tarr fages variance aukt keval fages mahitee vaparte.
optical microengiography jatil aukt signalchya donhi ghatakancha vapar karoon pravahachi ganana karate.
split-spectrum amplitude decoration relationship angiography (ess. ess. aii. dii. aii.) rakt pravahachi kalpana karnyasathi salag bii-scanmadheel sarasari decoration relationchi ganana karate.
paddhati.
imaging pranali.
ess. vhee.-oo. tii. heey varnakrameey kshetra aukt (ess. dii.-oo. tii.) aanee swept soars aukt (ess. ess.-oo. tii.) vaparoon kele jaau shakate.
ess. dii.-oo. tii. aanee ess. ess.-oo. tii. yaa donhi forier domain aukt (eff. dii.-oo. tii.) chya paddhati aahet, jyacha time domain octchya tulanet pratima sampadan veg lakshaniyaritya vegwan aahe. sarvasadharanpane, aukt pratidhvani vel vilamb aanee paravartit aanee mage vikhuralelya prakashachi tivrata mojate. broad-bandwidth lesar kinwa superluminacent diode qamee susangatata asalela prakash srot beam splitterkade jaato, joou ardha prakash sandarbh bahukade pathavato, joou dnyat thikani asato aanee ardha prakash namunyakade pathavato, jithe too vikhurato aanee uutinna paravartit karato. sandarbh aanee namuna bahunmadhun yenara prakash beam splitterver punha ekatra yeto, jyamule eka hastakshep namuna tayar hoto joou photoditectordware jaanavala jaato. ess. dii.-oo. tii. madhye, hastakshep namuna tyachya varanvartechya ghatakanmadhye greatingdware vibhagala jaato aanee ekach velee charge-coupled devicedware (see. see. dii.) shodhala jaato. pratyek varanvarta uutinmadhil vishisht kholishi sambandhit asate.
ess. ess.-oo. tii. madhye, eka tune karnyayogya swept lesar srot vaparla jaato.
algoridam.
aukt signalchi tivrata kinwa thipke haah yadruchchik madhyamatoon mage vikhuralelya prakashadvare tayar kelela yadruchchik hastakshep namuna aahe. aukt cross-sectional pratima ghete, jyanna bii-scan mhanatat. ess. vhee.-oo. tii. madhye, ekach thikani anek bii-scan kele jaatat, jyamule tisra pariman mhanoon velesah velesah deta sanch tayar hoto. pixel-nihay farak salag bii-scan chaukatimadhye mojala jaato. eka kann bhinnatechi pratima, sootra _ 1 ashee mojali jaate
sootra _ 2
jethe sootra _ 3 hii ekach thikani prapt jhalelya bii-scanchi sankhya aahe aanee sootra _ 4 hii sootra _ 6 dware anukramit kelelya bii-scanmadheel pratimechya nirdeshank sutrasah pixelchi tivrata aahe.
aukt pratimanchya kananchya namunyavar lakshya madhyamatil vikhuralelya kananchya gaticha parinam hoto. ekhadya madhyamadvare mage vikhuralelya prakashachya sanketadvare tayar honara hastakshep namuna yaa kananchya halchalinvar avalambun asato. mhanoon, dhabbe tayar karnyacha namuna yadruchchik vikhurnyachya madhyamat vikhuralelya kananchya avkashiy aanee tatpuratya gatishi sambandhit mahitee samavisht karato.
ess. vhee.-oo. tii. rakt pravahachi ganana karnyasathi pratimechya tivratechya aantar-chaukat bhinnatecha vapar karate. jyaa bhagat jaast pravah asel, tethe vikhuralelya kananchi gatee jaast asel aanee hii mahitee kananchya namunyat encode kelee jaate. 
ess. vhee.-oo. tii. laa tyachya uchch sanvedansheelata aanee doppler konachya swatantryamule microvasculation imaging fayade aahet. yavyatirikt, tyat sanganakeey jatilata qamee aahe aanee pii. vhee.-oo. tii. chya tulanet tulanene qamee deta sathavan aavashyak aahe.
tathapi, ess. vhee. oo. tii. heey mothya pramanat uutinchya halchalisathi aanee anek vikhuralelya prerit kalakrutinsathi sanvedanshil aahe.
anuprayog.
ess. vhee.-oo. tii. chey netravidnyan kshetrat upayog aahet kaaran anek rog dolhyatil rakt pravahavar parinam karatat. udaharanarth, madhumehi drushtipatalvikruti (dow.) drushtipatal keshikanchi rachana badaloo shakate aanee neovascularizational karanibhoot tharoo shakate, kachbindu haah drushtipatalatil khalchya rakt pravahashi sambandhit aahe, vay-sambandhit mccular degeneration (aii. emm. dii.) haah coroidal neovascularization sambandhit aahe jyamule drushti gamavoo shakate. ess. vhee.-oo. tii. chaa vapar dolhyachya sookshm raktavahinyanchi pratima kadhanyasathi aanee yaa roganchya pathophysiologycha abhyas karnyasathi keela gela aahe.
netrashastratil anuprayoganvyatirikt, ess. vhee.-oo. tii. chaa vapar bhrun, hriday ootee aanee pathichya kanyanchya uutinmadhil rakt pravahacha abhyas karnyasathi keela gela aahe. 

