He aha ka OCT Output?

ʻO ka optical coherence tomography (OCT) kahi ʻenehana kiʻi holomua i hoʻololi i nā ʻano like ʻole, a he mea nui ka hoʻomaopopo ʻana i ka hopena OCT no ka hoʻohana ʻana i kona mau hiki. Pili ka hopena OCT i ka ʻikepili a me nā hōʻike ʻike maka i hana ʻia e kahi ʻōnaehana OCT, i hoʻohana ʻia e hāʻawi i nā kiʻi kikoʻī, ʻāpana ʻāpana o nā ʻiʻo olaola, nā ʻāpana optical, a me nā mea ʻē aʻe.

Ma kona kumu, hana ʻo OCT ma muli o ke kumumanaʻo o ka interferometry haʻahaʻa-coherence. Hoʻopuka kahi ʻōnaehana OCT i ka mālamalama kokoke-infrared i ka laʻana e nānā ʻia ana. Ke hālāwai kēia mālamalama me nā ʻano like ʻole i loko o ka laʻana, hoʻihoʻi ʻia kekahi hapa o ia mea. A laila ana ka ʻōnaehana OCT i ka lohi manawa a me ka ikaika o nā nalu kukui i hoʻihoʻi ʻia. Ma ka hoʻohālikelike ʻana i ke kukui kuhikuhi a me ke kukui i hoʻihoʻi ʻia e ka laʻana, kūkulu ia i kahi kiʻi 2D a i ʻole 3D o ke ʻano kūloko o ka laʻana.

ʻO ke ʻano maʻamau o ka hoʻopuka OCT ʻo ia ke kiʻi ʻokiʻoki, e like me ka nānā ʻana i ka microscope o nā papa o loko o ka laʻana. Hōʻike kēia mau kiʻi i nā ʻiʻo like ʻole a i ʻole nā ​​​​mea me nā pae ʻokoʻa like ʻole, e ʻae ana i ka hoʻokaʻawale maopopo ma waena o nā hale. No ka laʻana, i nā noi lapaʻau, hiki i kahi kiʻi hoʻopuka OCT o ka retina ke hōʻike maopopo i nā papa like ʻole o kēia ʻiʻo palupalu, e hiki ai i nā kauka ke ʻike i nā maʻi e like me ka macular degeneration e pili ana i ka makahiki, ka diabetic retinopathy, a me ka glaucoma. ʻO ke ʻano hoʻonā kiʻekiʻe o ka hoʻopuka OCT, me nā hoʻonā axial maʻamau mai 1 a 15 micrometers, hāʻawi i ka ʻike kikoʻī he waiwai nui no ka ʻike pololei.

Ma waho aʻe o nā kiʻi ʻāpana 2D, hiki i nā ʻōnaehana OCT hou ke hana i nā ʻikepili volumetric 3D ma ke ʻano he hopena. Hāʻawi kēia mau hopena 3D i kahi hiʻohiʻona piha o ka laʻana, e ʻae ana i ka nānā hohonu ʻana mai nā kihi he nui. Hiki i nā kānaka noiʻi ke hoʻohana i ka hopena 3D OCT e aʻo i ke ʻano o nā ʻiʻo olaola paʻakikī, e like me ka lolo a i ʻole nā ​​​​kīʻaha koko, a nānā pehea lākou e loli ai i ka hala ʻana o ka manawa. Ma ke kahua o ka ʻepekema mea, hiki ke hoʻohana ʻia ka hopena 3D OCT e kālailai i ke ʻano o loko o nā mea i hui pū ʻia, ʻike i nā hemahema, a loiloi i ka maikaʻi o nā kaʻina hana hana.

Hiki i ka hoʻopuka OCT ke hoʻokomo pū i ka ʻikepili helu e pili ana i nā waiwai optical i ana ʻia o ka laʻana. Hiki i kēia ʻikepili ke komo pū me ka ʻike e pili ana i ka refractive index, ka coefficient scattering, a me ka coefficient absorption o nā wahi like ʻole i loko o ka laʻana. He mea nui kēlā ʻikepili helu no ka loiloi quantitative, e hiki ai i nā ʻepekema a me nā kauka ke hana i nā ana pololei a me nā hoʻohālikelike ma waena o nā laʻana like ʻole a i ʻole ma nā manawa like ʻole.

ʻO kekahi ʻano koʻikoʻi o ka hoʻopuka OCT ʻo ia kona hiki ke hoʻohui ʻia me nā ʻano hana kiʻi ʻē aʻe a i ʻole nā ​​​​mea hana loiloi ʻikepili. No ka laʻana, hiki ke hoʻohui ʻia ka hoʻopuka OCT me ke kiʻi fluorescence e hāʻawi i ka ʻike kūkulu a me ka hana e pili ana i ka laʻana. Eia kekahi, hiki ke hoʻohana ʻia nā polokalamu akamai e hana a kālailai i ka ʻikepili hoʻopuka OCT, e unuhi ana i nā hiʻohiʻona koʻikoʻi, a me ka hana ʻana i nā hōʻike no nā kumu lapaʻau a noiʻi paha.

I ka hōʻuluʻulu manaʻo, he kumu waiwai nui ka puka OCT o ka ʻike e pili ana i nā kiʻi kikoʻī, ka ʻikepili helu, a me ka hiki ke hoʻohui ʻia me nā ʻenehana ʻē aʻe. Hoʻopili kāna mau noi ma waena o ka lāʻau lapaʻau, biology, ʻepekema mea, a me nā ʻoihana ʻē aʻe he nui, e hoʻokele ana i nā holomua i ka hōʻailona, ​​​​noiʻi, a me ka kaohi maikaʻi. I ka hoʻomau ʻana o ka ʻenehana OCT i ka ulu ʻana, manaʻo ʻia e hoʻomaikaʻi hou aku ka maikaʻi a me ka versatility o ka puka OCT, e wehe ana i nā hiki hou no ka ʻike ʻepekema a me ka mālama lapaʻau.