Ukulungisa iphutha kwethuluzi lokuxilonga le-ultrasonic imaging
I-imaging ye-Ultrasonic isetshenziswe kabanzi ekuxilongweni kokuhlinzwa, i-cardiovascular, i-oncology, i-gastroenterology, i-ophthalmology, i-obstetrics kanye ne-gynecology nezinye izifo.Eminyakeni yamuva, ngakolunye uhlangothi, ukuthuthukiswa kwethuluzi lokuxilonga i-ultrasonic imaging lihlala lihlola umtholampilo wezinhlelo zokusebenza ezintsha, ngakolunye uhlangothi njenge-imaging ultrasound ekuxilongweni kokuhlangenwe nakho nokuqonda ukusebenza kwe-ultrasonic imaging instrument, odokotela kanye nomsebenzi. ngekhwalithi ye-ultrasonic imaging diagnostic instrument futhi ngokuvamile ibeka phambili izidingo ezihlukahlukene kanye neziphakamiso, ukuze kungagcini nje ukukhuthaza izinga lokuxilongwa kwe-ultrasonography lithuthukisa ngokungaphezi, Ngaphezu kwalokho, ukusetshenziswa kwe-imaging ye-ultrasonic kuye kwajula, futhi ubuchwepheshe bokuxilonga be-imaging ultrasonic iye yathuthukiswa. .
1. Gada ukulungisa iphutha
Ukuze uthole isithombe sekhwalithi ephezulu yenani lokuxilonga, izimo ezihlukahlukene ziyadingeka.Phakathi kwazo, ukulungiswa kwe-ultrasonic diagnostic instrument monitor kubaluleke kakhulu.Ngemuva kokuthi i-host nemonitha ivuliwe, isithombe sokuqala siboniswa esikrinini.Hlola ukuthi i-ribbon empunga iqedile yini ngaphambi kokulungisa iphutha, bese ubeka ukucubungula okuthunyelwe esimweni somugqa.Umehluko kanye Nokukhanya kwemonitha kungalungiswa ngendlela efisa ngayo.Susa iphutha lemonitha ukuze ulenze lifaneleke, ngisho noma libonisa ngokwanele ulwazi lokuxilonga olunikezwa umsingathi, futhi liyamukeleka kumbono womhloli.I-grayscale isetshenziswa njengendinganiso phakathi nokulungisa iphutha, ukuze umbala ompunga ophansi kakhulu ubonakale ngokumnyama.Izinga eliphakeme kakhulu elimpunga ukukhanya kwezinhlamvu ezimhlophe kodwa kugqamile, lungisa wonke amaleveli ezinga elimpunga elicebile futhi lingaboniswa.
2. Ukulungisa iphutha lokuzwela
Ukuzwela kusho ikhono lethuluzi lokuxilonga le-ultrasound ukuze libone futhi libonise ukuboniswa kwesixhumi esibonakalayo.Iqukethe inzuzo ephelele, ukucindezela kwenkundla eduze nesinxephezelo esikude noma isinxephezelo sokuzuza ukujula (DGC).Isamba senzuzo sisetshenziselwa ukulungisa ukukhuliswa kwamandla kagesi, amanje noma amandla esignali etholiwe yethuluzi lokuxilonga le-ultrasonic.Izinga lenzuzo ephelele lithinta ngokuqondile ukuboniswa kwesithombe, futhi ukulungisa iphutha kwaso kubaluleke kakhulu.Ngokuvamile, isibindi esivamile esivamile sikhethwa njengemodeli yokulungisa, futhi isithombe sesikhathi sangempela sesibindi sokudla esiqukethe i-hepatic vein emaphakathi ne-hepatic vein yesokudla sibonisa ukusika okutshekile kwe-subcostal oblique, futhi inzuzo ephelele iyalungiswa ukuze isibindi sibe namandla. i-parenchyma emaphakathi nesithombe (indawo engu-4-7cm) isondele kakhulu esikalini esimpunga esiboniswa maphakathi nesikali esimpunga.I-Depth gain compensation (DGC) yaziwa nangokuthi isinxephezelo se-time gain (TGC), ukulungiswa kwesikhathi sokuzwela (STC).Njengoba ibanga lesigameko igagasi le-ultrasonic likhuphuka futhi libe buthaka enqubweni yokusakazeka komzimba womuntu, isignali eseduze nenkundla ngokuvamile inamandla, kuyilapho isignali yenkundla ekude ibuthakathaka.Ukuze uthole isithombe sokujula okufanayo, ukucindezelwa kwensimu eseduze kanye nesinxephezelo sensimu ekude kufanele kwenziwe.Uhlobo ngalunye lwensimbi ye-ultrasonic ngokuvamile lusebenzisa izinhlobo ezimbili zesinxephezelo: uhlobo lokulawula indawo (uhlobo lokulawula umthambeka) kanye nohlobo lokulawula isigatshana (uhlobo lokulawula ibanga).Inhloso yawo ukwenza i-echo yendawo eseduze (izicubu ezingajulile) kanye nenkundla ekude (izicubu ezijulile) eduze nezinga elimpunga lendawo ephakathi, okungukuthi, ukuthola isithombe esifanayo ukusuka ekukhanyeni kuya ezingeni elimpunga elijulile, ukuze kube lula ukutolika nokuxilongwa kodokotela.
3. Ukulungiswa kobubanzi obuguqukayo
I-Dynamic range (evezwe nge-DB) ibhekisela kububanzi besignali ye-echo ephansi kakhulu ukuya kwephezulu kakhulu engakhuliswa i-amplifier yethuluzi lokuxilonga le-ultrasonic imaging.Isignali ye-echo ekhonjiswe esithombeni esingezansi kokuncane ayiboniswa, futhi isignali ye-echo ngaphezu komkhawulo ayisathuthukisiwe.Njengamanje, ububanzi obuguquguqukayo bezimpawu eziqine kakhulu neziphansi ze-echo ethuluzini lokuxilonga le-ultrasonic imaging jikelele ngu-60dB.I-ACUSONSEQUOIA umshini we-ultrasound wekhompyutha ofika ku-110dB.Injongo yokulungisa ububanzi obuguquguqukayo ukukhulisa ngokugcwele isignali ye-echo enevelu ebalulekile yokuxilonga kanye nokucindezela noma ukususa isignali yokuxilonga engabalulekile.Ububanzi obuguqukayo kufanele bushintsheke ngokukhululekile ngokuya ngezidingo zokuxilonga.
Ukukhethwa kobubanzi obuguqukayo obufanele akufanele kuphela kuqinisekise ukuboniswa kwesignali ye-echo ephansi futhi ebuthakathaka ngaphakathi kwesilonda, kodwa futhi kuqinisekise ukugqama komngcele wesilonda kanye ne-echo eqinile.Ububanzi obujwayelekile bokuguquguquka obudingekayo ekuxilongweni kwe-ultrasound yesisu ngu-50~55dB.Kodwa-ke, ukuze kubhekwe ngokucophelela nangokubanzi kanye nokuhlaziywa kwezicubu ze-pathological, uhla olukhulu oluguquguqukayo lungakhethwa futhi umehluko wesithombe ungancishiswa ukuze kuthuthukiswe ulwazi lokuxilonga oluboniswa esithombeni se-acoustic.
4. Ukulungiswa komsebenzi wokugxila kwe-beam
Ukuskena izicubu zomuntu nge-focus acoustic beam kungathuthukisa ukuxazululwa kwe-ultrasound esakhiweni esihle sendawo okugxilwe kuyo (isilonda), futhi kunciphise ukukhiqizwa kwezinto ezenziwe nge-ultrasonic, ngaleyo ndlela kuthuthukise ikhwalithi yesithombe.Njengamanje, ukugxila kwe-ultrasonic ikakhulukazi kusebenzisa inhlanganisela ye-real-time dynamic electron focusing, i-aperture eguquguqukayo, i-acoustic lens kanye nobuchwepheshe bekristalu be-concave, ukuze ukukhanya nokwamukela kwe-ultrasonic kufinyelele uhla olugcwele lokugxila kakhulu eduze, maphakathi nakude. amasimu.Ngethuluzi lokuxilonga le-ultrasonic elinomsebenzi wokukhetha okugxilwe ngokwezigaba, ukujula kokugxila kungalungiswa odokotela nganoma yisiphi isikhathi phakathi nokusebenza.
Isikhathi sokuthumela: May-21-2022