Momwe Mungasinthire Ubwino wa Zithunzi za Ultrasound(2)

Monga tonse tikudziwa kuti kumveka bwino kwa chithunzi cha ultrasound kumatsimikizira ngati matenda athu ndi olondola, Kuwonjezera pa machitidwe a makina, tili ndi njira zina zowonjezera chithunzicho.

Kuphatikiza pa zomwe tazitchula m'nkhani yapitayi, zotsatirazi zidzakhudza zithunzi za ultrasound.

1. Kusamvana

Pali malingaliro atatu akuluakulu a ultrasound: kusintha kwa malo, kuthetsa nthawi, ndi kuthetsa kusiyana.

● Kusintha kwa malo

Kusamvana kwa malo ndi kuthekera kwa ultrasound kusiyanitsa mfundo ziwiri pakuya kwapadera, kugawidwa mu axial kusamvana ndi kusamvana kofananira nawo.

Kusamvana kwa axial ndikutha kusiyanitsa pakati pa mfundo ziwiri motsatana ndi mtengo wa ultrasound (longitudinal), ndipo ndizofanana ndi ma frequency a transducer.

Axial resolution ya high-frequency probe ndi yapamwamba, koma panthawi imodzimodziyo kuchepetsedwa kwa phokoso la phokoso mu minofu kumakhalanso kwakukulu, zomwe zidzachititsa kuti axial apangidwe kwambiri, pamene axial resolution yakuya. Kapangidwe kake ndi kocheperako, kotero ndikufuna kukonza mawonekedwe a Axial a zozama zakuya, mwina pobweretsa ma transducer apamwamba kwambiri pafupi ndi zomwe mukufuna (mwachitsanzo, transesophageal echocardiography) kapena posinthira ku ma transducer otsika kwambiri.Ichi ndichifukwa chake tikulimbikitsidwa kugwiritsa ntchito ma probes apamwamba kwambiri a ultrasound komanso ma probe otsika pang'ono a ultrasound ya minofu yakuya.

Lateral kusamvana ndi luso kusiyanitsa mfundo ziwiri perpendicular kwa malangizo a akupanga mtengo (yopingasa).Kuphatikiza pa kukhala molingana ndi kuchuluka kwa kafukufukuyu, imakhalanso yogwirizana kwambiri ndi kukhazikitsidwa kwa cholinga.M'lifupi mwa akupanga mtengo ndi yopapatiza mu cholinga m'dera, kotero Lateral kusamvana ndi bwino kuganizira.Pamwambapa tikutha kuwona kuti pafupipafupi komanso kuyang'ana kwa kafukufukuyu kumagwirizana kwambiri ndi kusamvana kwapakati kwa ultrasound.1

Chithunzi 1

● Kusamvana kwakanthawi

Kusintha kwakanthawi, komwe kumatchedwanso kuchuluka kwa mafelemu, kumatanthawuza kuchuluka kwa mafelemu pa sekondi iliyonse ya kujambula.Ultrasound imafalikira mu mawonekedwe a pulses, ndipo kugunda kotsatira kumatha kupatsirana pambuyo poti kugunda kwam'mbuyo kumabwereranso ku kafukufuku wa ultrasound.

Kukonzekera kwa nthawi kumayenderana molakwika ndi kuya komanso kuchuluka kwa mfundo zazikuluzikulu.Kuzama kwakukulu ndi malo okhazikika kwambiri, kumachepetsa kubwereza kwa kugunda komanso kutsika kwa chimango.Kujambula kwapang'onopang'ono, chidziwitso chochepa chomwe chimajambulidwa pakanthawi kochepa.Nthawi zambiri mtengo wa chimango ukakhala pansi pa 24 mafelemu / s, chithunzicho chimagwedezeka.

Pa matenda opaleshoni opaleshoni, pamene singano chimayenda mofulumira kapena mankhwala jekeseni mofulumira, otsika chimango mlingo adzachititsa kusawona zithunzi, kotero osakhalitsa kusamvana n'kofunika kwambiri kwa zithunzi za singano pa puncture.

Kusiyanitsa kumatanthawuza kusiyana kwakung'ono kwambiri kwa imvi komwe chida chingathe kusiyanitsa.Kusiyanasiyana kwamphamvu kumagwirizana kwambiri ndi kusintha kwa kusiyana, kukulirakulira kwamitundu yosiyanasiyana, kutsika kusiyanitsa, kumapangitsa chithunzicho kukhala chosalala, komanso kuthekera kozindikira mitundu iwiri yofananira kapena zinthu (Chithunzi 2).

Chithunzi 2

2.Kuchuluka

Mafupipafupi amafanana mwachindunji ndi kusintha kwa malo komanso mosiyana ndi kulowa kwa ultrasound (Chithunzi 3).Kuchuluka kwafupipafupi, kutalika kwafupipafupi, kutsika kwakukulu, kusalowa bwino, komanso kusamvana kwakukulu kwa malo.

Chithunzi 3

M'ntchito zachipatala, zolinga za maopaleshoni ambiri zimakhala zachiphamaso, kotero kuti maulendo othamanga kwambiri amatha kukwaniritsa zosowa za tsiku ndi tsiku za madokotala, koma pamene akukumana ndi odwala onenepa kwambiri kapena zolinga zakuya (monga lumbar plexus), A low frequency convex array. kufufuza n'kofunikanso.

Ambiri amakono akupanga probes ndi burodibandi, amene ndi maziko kuzindikira pafupipafupi kutembenuka luso.Kutembenuza pafupipafupi kumatanthauza kuti kuchuluka kwa ntchito kwa probe kumatha kusinthidwa mukamagwiritsa ntchito kafukufuku womwewo.Ngati chandamalecho chili chapamwamba, sankhani ma frequency apamwamba;ngati chandamale ndi chakuya, sankhani mafupipafupi otsika.

Kutenga Sonosite ultrasound monga chitsanzo, kutembenuka kwake pafupipafupi kumakhala ndi mitundu 3, yomwe ndi Res (kusamvana, kudzapereka chisankho chabwino kwambiri), Gen (wambiri, adzapereka bwino pakati pa kusamvana ndi kulowa), Cholembera (kulowa, kudzapereka malowedwe abwino kwambiri). ).Choncho, pa ntchito yeniyeni, imayenera kusinthidwa molingana ndi kuya kwa malo omwe mukufuna.