Izitayela Zokuthwebula Izithombe Zezokwelapha Eziye Zasidonsela Ukunaka

Lapha, sizohlola kafushane izitayela ezintathu ezithuthukisa ubuchwepheshe bokuthwebula izithombe zezokwelapha, futhi ngenxa yalokho, ukuxilonga, imiphumela yesiguli, kanye nokufinyeleleka kwezempilo. Ukuze sibonise lezi zitayela, sizosebenzisa ukuthwebula izithombe ze-magnetic resonance (I-MRI), esebenzisa amasignali e-radio frequency (RF).

Ochwepheshe bezokunakekelwa kwempilo bathembele ezindleleni ezahlukene zokuthwebula izithombe zezokwelapha ukuze babone izakhiwo zomzimba zangaphakathi kanye nemisebenzi yazo ngaphandle kokuphazamisa. Lezi zindlela ziwusizo ekuxilongeni izifo nokulimala, ukuqapha ukusebenza kahle kokwelashwa, kanye nokuhlela izinqubo zokuhlinzwa. Indlela ngayinye yokuthwebula izithombe yenzelwe ukusetshenziswa kwezokwelapha okuthile.

Izindlela Zokuhlanganisa Izithombe

Ubuchwepheshe bokuthwebula izithombe obuhlanganisiwe busebenzisa amandla okuhlanganisa amasu amaningi ukuze kutholakale imibono eningiliziwe ngomzimba. Ochwepheshe bezempilo basebenzisa lezi zithombe ukuthuthukisa ukuxilongwa nokwelashwa kweziguli.

Isibonelo, ukuskena kwe-PET/MRI kuhlanganisa ukuskena kwe-positron emission tomography (PET) kanye nokuskena kwe-MRI. I-MRI inikeza izithombe ezinemininingwane zezakhiwo zomzimba zangaphakathi kanye nemisebenzi yazo, kuyilapho i-PET ibona ukukhubazeka kusetshenziswa ama-tracer. Lokhu kuhlanganiswa kuzuzisa kakhulu ekwelapheni izimo ezifana nesifo i-Alzheimer's, isifo sokuwa, kanye nezimila zobuchopho. Esikhathini esidlule, ukuhlanganisa i-PET ne-MRI kwakungenakwenzeka ngenxa yamagnethi anamandla e-MRI aphazamisa ama-detector e-imaging e-PET. Ukuskena kwakudingeka kwenziwe ngokwehlukana bese kuhlanganiswa, okubandakanya ukucutshungulwa kwezithombe okuyinkimbinkimbi kanye nokulahleka kwedatha okungenzeka. Ngokusho kwe-Stanford Medicine, inhlanganisela ye-PET/MRI inembile kakhulu, iphephile, futhi ilula kakhulu kunokwenza ukuskena okuhlukile.

Ukwandisa Ukusebenza Kwesistimu Yokuthwebula Izithombe

Ukuthuthukiswa Kokusebenza kuholela ekuthuthukisweni kwekhwalithi yesithombe kanye nolwazi olunembile ngezinjongo zokuxilonga nokwelapha. Isibonelo, abacwaningi manje sebenokufinyelela ezinhlelweni ze-MRI ezinamandla asensimini afinyelela ku-7T. Lokhu kuthuthukiswa kokusebenza kuthuthukisa isilinganiso sesignali-kuya-kumsindo (i-SNR), okuholela emiphumeleni yezithombe ecacile nenemininingwane eminingi. Kukhona futhi ugqozi lokwenza abamukeli be-MRI bagxile kakhulu kwidijithali. Ngokutholakala kwesisombululo esiphezulu kanye nabaguquli be-analog-to-digital abavame kakhulu (ama-ADC), kunethuba lokushintsha i-ADC iye kukhoyili ye-RF, enganciphisa umsindo futhi ikhulise i-SNR lapho ukusetshenziswa kwamandla kuphathwa ngendlela efanele. Izinzuzo ezifanayo zingatholakala nangokungeza amakhoyili e-RF amaningi ohlelweni. Ukubeka phambili ukuthuthukiswa kokusebenza kuhumusha ekuthuthukiseni izici zolwazi lwesiguli njengezikhathi zokuskena nezindleko.

Ukuklama Imishini Yokuthwebula Izithombe Yokuthwaleka

Ngokuklama, eminye imishini yokuhlola isiguli kanye nokwelashwa yaqala ezindaweni ezilawulwayo ukuze isebenze kahle (isb., i-MRI suite).

I-tomography ehlanganisiwe (CT) kanyeukuthwebula izithombe ze-magnetic resonance (I-MRI) ziyizibonelo ezinhle kakhulu.

Nakuba lezi zindlela zokuthwebula izithombe zisebenza kahle ekuxilongeni, zingaba nzima ngokomzimba ezigulini ezigula kakhulu. Intuthuko yezobuchwepheshe manje isishintsha lezi zinsizakalo zokuxilonga ziye lapho iziguli zikhona.

Uma kukhulunywa ngamadivayisi angahambi njengemishini ye-MRI, ukudala umklamo wokuthwala kuhilela ukucabangela izici ezifana nosayizi nesisindo, amandla, amandla kazibuthe, izindleko, ikhwalithi yesithombe, kanye nokuphepha. Ezingeni lezinto, izinketho ezifana nama-capacitor asebenza kahle zidlala indima ebalulekile ekuqinisekiseni ukukhiqizwa kwamandla okuzinzile nokusebenza kahle kanye nokucutshungulwa kwesignali ngaphakathi kohlaka oluncane, oluphathekayo.

—— ...–

Ngokuthuthuka kobuchwepheshe bokuthwebula izithombe zezokwelapha, kuphuma izinkampani eziningi ezingahlinzeka ngemikhiqizo yokuthwebula izithombe, njengezijovo namasirinji. Ubuchwepheshe bezokwelapha be-LnkMed bungenye yazo. Sihlinzeka ngephothifoliyo ephelele yemikhiqizo yokuxilonga esekelayo:Ama-injector e-CT，Umjovo we-MRIfuthiUmjovo we-DSAZisebenza kahle nezinhlobo ezahlukene ze-CT/MRI scanner ezifana ne-GE, i-Philips, ne-Siemens. Ngaphandle kwe-injector, siphinde sinikeze i-syringe kanye ne-tube engasetshenziswa ezinhlotsheni ezahlukene ze-injector kufaka phakathiIMedrad/Bayer, I-Mallinckrodt/Guerbet, I-Nemoto, I-Medtron, U-Ulrich.

Lokhu okulandelayo yizici zethu eziyinhloko: izikhathi zokulethwa okusheshayo; Iziqu eziphelele zesitifiketi, iminyaka eminingi yesipiliyoni sokuthumela ngaphandle, inqubo yokuhlola ikhwalithi ephelele, imikhiqizo esebenza ngokugcwele.

Wena neqembu lakho namukelekile ukuza nizobonisana, sinikeza isevisi yokwamukela izivakashi amahora angama-24.