Inyathelo loku-1:Iisetingi zesixhobo
Umbala ongeyonyani: Imibala eqaqambileyo (umbala ongeyonyani) inokuphucula ukusonjululwa kokumahluko ngokuphucula ukungafani kwezicubu ezithambileyo ezinzima.Ngokwethiyori, iliso lomntu linokuqonda kuphela inani eliqingqiweyo lamanqanaba angwevu, kodwa linokuqonda inani elikhulu lamanqanaba emibala eyahlukeneyo.Ngoko ke, ukutshintsha umbala kunokwandisa ukuqatshelwa kwezakhiwo ezithambileyo.I-Pseudo-umbala ayitshintshi ulwazi olubonisiweyo lwe-ultrasound, kodwa luphucula kuphela imbono yolwazi.
Ukulungiswa komfanekiso we-2D
Injongo yokulungelelanisa umfanekiso we-dimensional kukwahlula izicubu ze-myocardial kunye ne-cardiac blood pool ukuya kwinqanaba elikhulu ngelixa ugcina izinga eliphezulu lesakhelo.Okukhona uphezulu ireyithi yesakhelo, kokukhona ubonisa umfanekiso ogudileyo kunye nolwazi oluninzi onokulufumana.
Iiparamitha ezichaphazela izinga lesakhelo
Ubunzulu: Umyinge wesakhelo somfanekiso obunzulu.Okukhona ubunzulu bukhulu, kokukhona kuthatha ixesha ukuze umqondiso ubuyele kuphando, kwaye isezantsi ireyithi yesakhelo.
Ububanzi: Ubukhulu bobubanzi bomfanekiso, ubuninzi bomgca wesampulu yasekuhlaleni, kunye nesantya esisezantsi sesakhelo.I-zoom yomfanekiso (zoom): Umsebenzi wokusondeza wendawo yomdla unexabiso elikhulu kuvavanyo lwezakhiwo ezincinci kunye nezakheko ezihamba ngokukhawuleza, ezifana ne-morphology yevalvu.
Ubuninzi bomgca: Ubuninzi bomgca wokuskena kwisakhelo somfanekiso ngamnye kukuxinana komgca.
Indlela yokwenza umfanekiso omacala mabini
I-Harmonic imaging (i-harmonics): Ngenxa yokuphazamiseka okunamandla kwecala-lobe yentsimi yesandi esisisiseko kunye nokuphazamiseka okubuthathaka kwe-side-lobe kwibala lesandi se-harmonic, igama lomfanekiso wesandi owenziwe ngokusebenzisa ulwazi lomzimba womntu owenziwe ngowesibini. i-harmonic kwi-echo (ukubonakalisa okanye ukusabalalisa) Kwi-imaging harmonic ye-ultrasound.
I-imaging ye-multi-domain composite imaging (XBeam): Ukulungiswa kwemifanekiso edibeneyo kwi-domain frequency kunye ne-spatial domain inokuphelisa ngokufanelekileyo imiphumo emibi yokunciphisa isisombululo sesithuba esibangelwa yi-discretization yomfanekiso kunye nokunciphisa umfanekiso, kwaye yenze ukungabikho kwesisombululo sesithuba somfanekiso wokuqala. .Fumana umfanekiso ocacileyo.
Sithep2: Ukulungiswa kombala, amandla kunye nesisombululo esiphezulu samandla eDoppler
Kuba imifanekiso ekumgangatho ophezulu ibonakalisa ubukhulu becala
1. Ubungakanani bomfanekiso buphakathi
2. Umfanekiso unokukhanya okufanelekileyo kunye nomthunzi
3. Ukuchasana komfanekiso omhle kunye nesisombululo esiphezulu
4. Ukufana komfanekiso omhle
5. Ukwandisa uvakalelo lombala kwaye ubonise ukuhamba kwegazi okunesantya esisezantsi
6. Nciphisa i-spillover yombala kwaye ususe i-aliasing
7. Yandisa ireyithi yesakhelo (bamba imiqondiso yokuhamba kwegazi ngesantya esiphezulu)
8. Yandisa ubuntununtunu be-PW&CW
Iisetingi zemenyu engundoqo
Ulawulo lokuzuza: Ukuba isicwangciso sokuzuza umbala siphantsi kakhulu, kuya kuba nzima ukubonisa iimpawu zombala.Ukuba useto luphezulu kakhulu, umbala we-spillover kunye ne-aliasing iya kwenzeka.
Ukuhluza eludongeni: Kususa ingxolo ebangelwa ngumthambo wegazi okanye intshukumo yodonga lwentliziyo.Ukuba isihluzo sodonga simiselwe phantsi kakhulu, imibala iyakuphuma igazi.Ukuba useto lokucoca udonga luphezulu kakhulu kwaye uluhlu lwesantya luhlengahlengiswe lube lukhulu kakhulu, luya kubangela umboniso ongemhle wokuhamba kwegazi.Ukuze ubonise ukuhamba kwegazi okuphantsi, isantya kufuneka sincitshiswe ngokufanelekileyo ukuhambelana nesantya esifunyenweyo sokuhamba kwegazi, ukwenzela ukuba ukuhamba kwegazi okunemibala kunokubonakaliswa ngokufanelekileyo.
Useto lwemenyu esezantsi
Imephu yombala: Imephu yombala nganye yeendlela zokubonisa imephu inokhetho ukusuka ezantsi ukuya phezulu, usebenzisa imibala eyahlukileyo ukubonisa ukuhamba kwegazi okwahlukileyo.
Ukuphindaphinda: Kukho iinketho ezintathu: eziphezulu, eziphakathi kunye nezisezantsi.Kwii-frequencies eziphezulu, isantya esinokulinganiswa sisezantsi kwaye ubunzulu abunzulu.Kwii-frequencies eziphantsi, isantya esinokulinganiswa siphezulu kwaye ubunzulu bunzulu.I-frequency ephakathi ikwindawo ethile phakathi.
Isisombululo sokuhamba kwegazi (i-flowresolution): Kukho iinketho ezimbini: eziphezulu kunye nezantsi.Inketho nganye inokhetho oluninzi ukusuka ezantsi ukuya phezulu.Ukuba isisombululo sokuhamba kwegazi sibekwe phantsi, iipikseli zombala ziya kuba zikhulu.Xa isetelwe phezulu, iipikseli zombala zincinci.
Isikali sesantya (isikali): Kukho i-kHz, cm/sec, kunye nokhetho lwe-m/sec.Ngokubanzi khetha i-cm/sec.Ibhalansi: Lawula imiqondiso yombala ebekwe ngaphezulu kumfanekiso we-ultrasound ene-dimensional-dimensional ukuze imiqondiso yombala iboniswe kuphela kudonga lwemithambo yegazi ngaphandle kokuchitheka.Uluhlu olukhethiweyo yi-1~225.
Ukugudisa: Igudisa imibala ukwenza umfanekiso ubonakale uthambile.Sebenzisa iinketho ezimbini, RISE kunye ne-FALL, ukufumana ibhalansi.Inketho nganye inokhetho oluninzi ukusuka ezantsi ukuya phezulu.
Ubuninzi bomgca: Xa ubuninzi bomgca bukhuphuka, izinga lefreyimu liyancipha, kodwa ulwazi oluqulethwe kumbala we-Doppler luyanda, kwaye imida phakathi kwe-cardiac blood pool, i-ventricular wall, kunye ne-interventricular septum iyacaca.Xa useta, kufuneka ulungelelanise ubudlelwane phakathi koxinaniso lomgca kunye nokuphindaphinda, kwaye uzame ukuzuza ubuninzi bomgca ophezulu kwireyithi eyamkelekileyo yesakhelo.
Ucinezelo lwe-Artifact: Ihlala ikhethwa ukuba icime.
Isiseko sombala: Hambisa umgca we-zero wombala we-Doppler phezulu nasezantsi ukuze uphelise okanye unciphise ukugqwetheka kombala ukuze umbala we-Doppler ubonakalise ngokuchanekileyo ngakumbi ubume bokuhamba kwegazi.
Isihluzo somgca: Ukuze uphumeze ulungelelwaniso phakathi kwesisombululo secala kunye nengxolo yomfanekiso, ungakhetha inani lezihluzo ezisecaleni, ezineenketho ezahlukeneyo ukusuka ezantsi ukuya phezulu.\
Uhlengahlengiso lwe-Ultrasound yesiqhelo---2D, CDFI, PW, njl.
1.2D Uhlengahlengiso
1.1 Umxholo wohlengahlengiso lwe-2D rhoqo
1.2
2D Isiqulatho sohlengahlengiso esingaguqukiyo
Ubunzulu:
Sebenzisa i-low-frequency probes xa izilonda zamalungu angaphezulu zinkulu
Umsebenzi wokwandisa umfanekiso (ukufunda nokubhala ulwandiso) ubonisa izakhiwo ezincinci kunye nokuphucula ukuchaneka komlinganiselo.
Umsebenzi wokwandisa umfanekiso (ukufunda nokubhala ulwandiso) ubonisa izakhiwo ezincinci kunye nokuphucula ukuchaneka komlinganiselo.
Ukukhanya komfanekiso kunye nomthunzi inzuzo efanelekileyo I-GAIN---ilungisa i-amplitude yokubonisa yonke imiqondiso efunyenweyo, echaphazela ukuqaqamba kwesiboniso se-ultrasound.
Izilonda ze-hypoechoic kakhulu zonyusa inzuzo epheleleyo yokuthintela ukuxilongwa kakubi njengezilonda ze-cystic
Ubunzulu bokufumana imbuyekezo ye-DGC ilungelelanisa ukufunxa kunye neempawu zokunciphisa amaza e-ultrasonic xa esasazeka emzimbeni womntu, oya kuvelisa i-echoes ezinamandla kwintsimi ekufutshane kunye nee-echoes ezibuthathaka kwintsimi ekude.Lungisa ngokufanelekileyo i-DGC ukucinezela intsimi ekufutshane kwaye ubuyekeze intsimi ekude, ukuze i-echo yomfanekiso ithambekele kwi-Uniform.
Ixesha lokuposa: Nov-23-2023
