Ntev Pulsed Nd:YAG Laser siv rau vascular

Ntev-pulsed 1064 Nd: YAG laser ua pov thawj los ua kev kho mob zoo rau hemangioma thiab vascular malformation hauv cov neeg mob tawv nqaij tsaus nrog nws cov txiaj ntsig tseem ceeb ntawm kev ua kom muaj kev nyab xeeb, muaj txiaj ntsig zoo, tus nqi tsim nyog nrog kev poob qis thiab kev phiv tsawg.

Laser kev kho mob ntawm cov leeg sab nraud thiab cov ceg sib sib zog nqus nrog rau ntau yam kab mob vascular tseem yog ib qho ntawm cov kev siv ntau dua ntawm lasers hauv dermatology thiab phlebology.Qhov tseeb, lasers tau dhau los ua kev kho mob ntawm kev xaiv rau vascular birthmarks xws li hemangiomas thiab chaw nres nkoj-wine stains thiab cov kev kho mob ntawm rosacea.Qhov ntau yam ntawm congenital thiab tau txais benign vascular lesions zoo kho nrog lasers txuas ntxiv nthuav dav thiab tau piav qhia los ntawm lub hauv paus ntsiab lus ntawm kev xaiv photothermolysis.Nyob rau hauv cov ntaub ntawv ntawm vascular tshwj xeeb laser systems, lub hom phiaj yog intravascular oxyhemoglobin.

Los ntawm lub hom phiaj oxyhemoglobin, lub zog raug xa mus rau cov phab ntsa ntawm cov hlab ntsha.Tam sim no, 1064-nm Nd: YAG laser thiab pom / ze infrared (IR) khaus pulsed teeb (IPL) ob qho tib si muab cov txiaj ntsig zoo.Qhov sib txawv tseem ceeb, txawm li cas los xij, yog tias Nd: YAG lasers tuaj yeem nkag mus tob dua thiab yog li tsim nyog rau kev kho mob ntawm cov hlab ntsha loj dua, tob dua li cov leeg leeg.Lwm qhov zoo dua ntawm Nd: YAG laser yog nws qis dua qhov nqus coefficient rau melanin.Nrog rau qhov qis dua qhov nqus coefficient rau melanin, muaj kev txhawj xeeb tsawg dua rau kev puas tsuaj rau cov kab mob epidermal yog li nws yuav siv tau ntau yam kev nyab xeeb los kho cov neeg mob cov xim tsaus.Qhov kev pheej hmoo rau post inflammatory hyper pigmentation tuaj yeem txo qis los ntawm cov khoom siv txias txias.Epidermal txias yog qhov tseem ceeb los tiv thaiv kev puas tsuaj los ntawm kev nqus melanin.

Leg vein therapy yog ib qho kev thov kom zoo nkauj tshaj plaws.Ecstatic venules muaj nyob rau hauv kwv yees li 40% ntawm cov poj niam thiab 15% ntawm cov txiv neej.Ntau tshaj 70% muaj keeb kwm ntawm tsev neeg.Feem ntau, cev xeeb tub lossis lwm yam tshuaj hormonal cuam tshuam.Txawm hais tias feem ntau yog teeb meem tshuaj pleev ib ce, ntau tshaj li ib nrab ntawm cov hlab ntsha tuaj yeem ua cov tsos mob.Lub vascular network yog ib tug complex system ntawm ntau cov hlab ntsha ntawm txawv caliber thiab tob.Venous ntws ntawm ob txhais ceg muaj ob txoj hauv kev, qhov sib sib zog nqus muscular plexus thiab lub ntsej muag cutaneous plexus.Ob txoj kab txuas txuas nrog cov nkoj sib sib zog nqus perforating.Cov hlab ntsha me me, uas nyob rau sab sauv papillary dermis, ntws mus rau qhov tob tob reticular veins.Cov hlab ntsha loj dua nyob hauv cov reticular dermis thiab cov rog subcutaneous.Cov hlab ntsha sab nraud tuaj yeem loj li 1 txog 2 hli.Reticular veins yuav loj li 4 mus rau 6 hli.Cov hlab ntsha loj dua muaj cov phab ntsa tuab, muaj cov ntshav deoxygenated ntau dua, thiab tuaj yeem sib sib zog nqus ntau dua 4 mm.Kev hloov pauv hauv cov hlab ntsha loj, qhov tob, thiab oxygenation cuam tshuam kev hloov pauv thiab kev ua tau zoo ntawm kev kho cov leeg leeg.Cov khoom siv pom pom lub teeb tsom rau cov oxyhemoglobin absorption peaks tuaj yeem siv tau rau kev kho mob telangiectasias ntawm ob txhais ceg.Ntev-yoj-ntev, ze-IR lasers tso cai rau nkag mus tob ntawm cov ntaub so ntswg thiab tej zaum yuav txawm siv rau lub hom phiaj tob reticular veins.Ntev wavelengths kuj ua kom sov ntau dua li qhov luv wavelengths nrog ntau dua qhov nqus coefficients.

Laser ceg kho cov hlab ntsha kawg cov ntsiab lus yog tam sim ntawd nkoj ploj los yog pom intravascular thrombosis los yog rupture.Microthrombi tuaj yeem ua tau zoo nyob rau hauv lub nkoj lumen.Ib yam li ntawd, perivascular extravasations ntawm cov ntshav yuav pom tseeb los ntawm cov hlab ntsha tawg.Qee zaum, lub suab nrov nrov tuaj yeem txaus siab nrog kev tawg.Thaum siv cov mem tes luv luv, tsawg dua 20 milliseconds, yuav tshwm sim.Qhov no yuav yog qhov thib ob rau kev kub ceev microvascular thiab rupture.

Nd: YAG kev hloov kho nrog qhov sib txawv ntawm qhov ntau thiab tsawg (1-6 hli) thiab ntau dua fluences pub rau focal vascular tshem tawm nrog ntau cov ntaub so ntswg puas tsuaj.Kev soj ntsuam kev soj ntsuam tau pom tias cov mem tes ntev ntawm 40 thiab 60 milliseconds muab kev kho kom zoo ntawm cov leeg leeg.

Feem ntau cov kev phiv tshwm sim ntawm laser kho ntawm ceg leeg leeg yog tom qab inflammatory hyper pigmentation.Qhov no pom ntau dua nrog cov tawv nqaij tawv, raug tshav ntuj, lub sijhawm luv luv (<20 milliseconds), cov hlab ntsha tawg, thiab cov hlab ntsha uas muaj cov thrombus.Nws ploj mus nrog lub sijhawm, tab sis qhov no yuav yog ib xyoos lossis ntev dua hauv qee kis.Yog tias muaj cua sov ntau dhau los ntawm qhov tsis tsim nyog fluence lossis lub sijhawm pulse, ulceration thiab caws pliav tom qab tuaj yeem tshwm sim.

Ntev Pulsed Nd:YAG Laser siv rau vascular


Post lub sij hawm: Oct-31-2022