
lazer doppler imaging

live tissue scan cheyyaan lazer beam upayogikkunna oru imaging reethiyaanu lazer doppler imaging (eldi). lazer prakasham tissuevil athumbol, chalikkunna rakthaanukkal prathifalikkunna (baakkskettar) prakaashatthil doppler gadakangal srishtikkunnu. oru photodiode upayogichu thirichuvarunna prakasham kandethukayum athu oru electrical signalayi maarukayum cheiyunnu. thudarnnu scan cheytha pradeshathe tissue perfusion aanupaathikamaaya oru signal kanakkakkaan signal prosess cheiyunnu. prakriya poortthiyaakumbol, oru screenil perfusion kaanikkunna oru chithram srishtikkunnathinaayi signal prosess cheiyunnu.
stern emm upayogichu micro sarkkuleshan alakkaan lazer doppler ephakt aadyamaayi upayogichu.dii. 1975ll ithu vaidyashaasthrathil vyaapakamaayi upayogikkukayum athinekkurichulla chila praathinidhya gaveshanangal ivayaanu 
nethrarogatthil upayogikkuka.
hridayasambandhamaaya rogangalude aakramanaathmakamallaatha paryaveshanathinu kannu oru savisheshamaaya avasaram nalkunnu. digital holography vazhi ell. dii. aikku rettinayileyum coroidileyum rakthayottam alakkaan kazhiyum. prathyekichum, rettina pigment eppitheeliyathinum photoriseptarukalkkum vitharanam cheiyunna uyarnna rakthakkuzhalukalulla tissuewaanu coroid. ennittum coroidinte shareeraghadanayum ozhukkum anweshikkunnathu velluviliyaanu. athyaadhunika indosayanain green angiography thaarathamyappeduthaavunna speshyal resolutionodukoodiya manushyarile coroidal naalangalile praadeshika rakthapravaahathinte uyarnna kontraast drishyavalkkaranam eldi nalkunnu. rakthasammardhathile vyathyaasangal rakthachamkramanathiludaneelam rakthathinte ozhukk vardhippikkunnu. rakthapravaahathinte sharashari nirakk rakthasammardhatheyum rakthakkuzhalukal avatharippikkunna rakthapravaahathodulla hemodynamic prathirodhatheyum aasrayichirikkunnu. ell. dii. aii. kku praadeshika arterial resistivity soochikayude mapping praapthamaakkaanum rettina dhamanikaleyum sirakaleyum avayude sistool-diastol vyathiyaanangalude adisthaanathil avyakthamaayi thirichariyaanum manushya annukalile okkular hemodynamics velippeduthaanum kazhiyum.
charmmatthile uparithala tharamgangalude alavu.
rakthapravaahathinte praadeshikavegam alakkunnathu lazer doppler holography (photoplithismography) enna akkatthilum aii fundesinum samayathinanusarichu pulse aakruthiyilulla profileund. damanikalileyum sirakalileyum hemodynamics velippeduthunnathinu eee vidoora pulse taranga alavukal vaidyashaasthraparamaayi nadatthaam, koodaathe aakramanaathmakamallaatha alakkaanum kazhiyum. oonn-axis interferograamukalil ninnu punarnirmmicha digital holograamukalude thaalkkaalika demodulation nadathunnathinulla kaaryakshamamaya maargamaan digital holograamukalude pradhana ghadaka vishakalanam, ithu kaiyile uparithala tharamgangal velippeduthaan upayogikkaam.
obstetriks, gynaecology ennivayil upayogikkuka.
ell. dii. aii sthree laingika prathikaranatthinte nerittulla alavu nalkunnu, athinu jananendria sanbarkkam aavasyamilla; charmmatthinte uparithalathinu rund muthal moonnu millimeter vare aazhathilaan signalukal shekharikkunnathu. rund padanangal soochippikkunnathu ell. dii. aii ennathu sthree laingika uthejanathinte saadhuvaaya alavukolaanu ennaanu. ell. dii. aikku vivechanaadhikaaramundennu waxman pukkal theliyichu; athaayath, laingika prathikaranatthe nishpakshavum positeevum negatteevumaaya maanasikaavasthayil ninnu verthirichariyaan ithinu kazhiyum. yoniyile photoplathismography (vii. pii. jii) thaarathamyappeduthumbol, ell. dii. aii prayojanakaramaanu, kaaranam ithinu jananendria sanbarkkam aavasyamilla. koodaathe, ell. dii. aii. vaasokongjashante nerittulla alavu nalkunnu, koodaathe fluxes allengil rakthapravaahathinte unitukal ulkkollunna alavinte oru samboornna yoonit undu. ell. dii. aiyude poraaymakal, ithinu thudarchayaaya laingika prathikaranam nalkaan kazhiyilla ennathaanu, koodaathe lazer doppler perfusion imager vii. pii. jii polulla jananendria laingika uttejana vilayiruthalinte mattu reethikalekkaal valare chelaveriyathaanu.

