Te ultrasound a te kanohi me te orbit

Ko te ultrasound a-kanohi me te orbit te whakamatautau hei tirotiro i te rohe o te karu. Ka inea hoki te rahi me nga hanganga o te karu.

Ko te whakamatautau ka tino mahia i te tari ophthalmologist, te tari ophthalmology ranei o te hohipera, te whare haumanu ranei.

Kua koretake to karu i te rongoa (he pata whakatoronga). Ko te hiko ultrasound (transducer) ka whakatakotoria ki mua o te kanohi.

Ka whakamahia e te ultrasound nga ngaru oro auau-nui e whakawhiti ana i te kanohi. Ko nga whakaata (echo) o nga ngaru oro he whakaahua i te hanga o te karu. 15 meneti pea te roa o te whakamatautau.

E 2 nga momo matawai: A-scan me te B-scan.

Mo te A-matawai:

• Ka noho koe i tetahi tuuru ka tuu i to kauwae ki runga i te okiokinga o ou kauae. Ka titiro totika koe ki mua.
• Ka whakatauhia he tirotiro iti ki mua o to kanohi.
• Akene ka oti te whakamatautau ka takoto koe i muri. Ma tenei tikanga, ka whakatakotoria he kapu ki tonu i te kawa ki tou kanohi, hei whakamatautau i a koe.

Mo te B-matawai:

• Ka noho koe ka tono pea koe ki te tirotiro i nga huarahi maha. I te nuinga o te wa ka mahia te whakamatautau ka kati o kanohi.
• Ka tukuna he kiri ki runga i te kiri o ou kamo. Ko te tirotiro B-matawai ka ata whakatakotoria ki o kamo kamo ki te whakamatautau.

Kaore he whakaritenga motuhake e hiahiatia ana mo tenei whakamatautau.

Kua koroa to karu, no reira kaore koe e awangawanga. Ka tonoa pea koe ki te tiro i nga waahanga rereke hei whakapai ake i te ahua o te ultrasound kia kite ai ranei i nga waahanga rereke o to kanohi.

Ko te reera e whakamahia ana me te B-scan ka rere pea i to paparinga, engari kaore koe e paku mamae, mamae ranei.

Akene me hiahia koe ki tenei whakamatau mena he katarata to kanohi, etahi atu raru kanohi ranei.

Ko te ultrasound A-scan te whiu i te kanohi ki te whakatau i te mana tika o te kapi whakauru i mua i te pokanga cataract.

Ka mahia he tirotiro-B hei tirotiro i nga waahanga o roto o te karu, i te waahi ranei i muri o te karu kaore e kitea tika. Ka tupu pea tenei ka he ngeru koe, etahi atu ahuatanga ranei uaua ki te kite te taakuta ki muri o to kanohi. Ma te whakamatautau ka awhina pea i te tohu i te wehenga retina, te pukupuku, etahi atu mate ranei.

Mo te A-matawai, ko nga inenga o te karu kei te awhe noa.

Mo te B-matawai, ko nga hanganga o te karu me te waahanga e kitea noa ana.

Ma te B-matawai e whakaatu:

• Ka heke te toto ki roto i te papa maama (vitreous) ka whakakiia te tua o te kanohi (whakaheke toto)
• Mate pukupuku o te retina (retinoblastoma), i raro i te retina, i etahi atu waahanga ranei o te karu (penei i te melanoma)
• He kiko kua whara, kua whara ranei i te turanga bony (porowhita) e karapoti ana, e tiaki ana te kanohi
• Nga tinana ke
• Unuhia te retina mai i muri o te kanohi (wehenga retina)
• Te pupuhi (pupuhi)

Kia kore ai e kowiri i te korona, kaua e mirimiri i te kanohi kua koroa kia mutu ra ano te rongoa rongoa (tata ki te 15 meneti). Kaore he raru atu.

Te Hiko - te ara o te kanohi; Ultrasound - porowhita kanohi; Ocular ultrasonography; Orbital ultrasonography

• Upoko whakapapa me te kanohi

Fisher YL, Sebrow DB. Whakapaa atu ki te ultrasonography B-scan. I roto i: Yanoff M, Duker JS, eds. Oththalmology. 5th ed. Philadelphia, PA: Elsevier; 2019: chap 6.5.

Guthoff RF, Labriola LT, Stachs O. Diagnostic ultrasound ophthalmic. I roto i: Schachat AP, Sadda SVR, Hinton DR, Wilkinson CP, Wiedemann P, eds. Retina o Ryan. 6 ed. Philadelphia, PA: Elsevier; 2018: chap 11.

Thust SC, Miszkiel K, Davagnanam I. Orbit. I roto i: Arama A, Dixon AK, Gillard JH, Schaefer-Prokop CM, eds. Grainger & Allison’s Diagnostic Radiology: He Pukapuka Kupu Whakaaturanga Hauora. 6 ed. Philadelphia, PA: Elsevier Churchill Livingstone; 2015: chap 66.