Indlela yokulungelelanisa isixhobo ngexesha lovavanyo lwe-ultrasound (ngesinyathelo-nge-nyathelo-icandelo 2)

2.CDFI

Ukusetyenziswa kwe-CDFI: Jonga imithambo yegazi, chonga ubume bemibhobho,

Ukuchonga imithambo kunye nemithambo, bonisa imvelaphi kunye nesalathiso sokuhamba kwegazi,

Ixesha lexesha, libonakalisa ubunjani bokuhamba kwegazi, libonisa isantya sokuhamba kwegazi ngokukhawuleza

Ukucotha, indawo ekhokelwayo yesampula ye-Doppler

1) Umxholo wohlengahlengiso lweCDFI rhoqo (umbhalo obomvu):

2) I-CDFI ayifane ilungise umxholo

Inzuzo iyonke:

 

Ubungakanani bebhokisi yombala kunye nendawo

Umahluko womfanekiso phakathi kwesikali esiphezulu kakhulu, esisezantsi kakhulu nesiphakathi

Umbala wesakhelo sesakhelo sokujikwa kwe-engile steer

Ukuphambuka kwicala lomthambo wegazi ukwenza ukuba igazi lihambe kumngxuma lizele kwaye lanelisayo.

Umbuzo 1: Indlela yokulungelelanisa iiparamitha ze-ultrasound ukubonisa ukuhamba kwegazi okuphantsi?

1. Yandisa---inzuzo

2. Nciphisa --- isikali sesikali sesantya

3. Yongeza --- imveliso yesandi Amandla oPhumo

4. Yongeza --- umndilili wesakhelo

6. Nciphisa---indawo yesampulu

6. Nciphisa --- inani lamanqaku ekugxilwe kuwo (ukwandisa ukugxila)

7. Nciphisa --- umgama

Nciphisa--umboniso wendawo yesampulu:

Umbuzo 2: Indlela yokunciphisa ukuphuma kwegazi kunye nokususa i-aliasing?

1. Nciphisa--inzuzo

2. Yongeza--isikali sesikali sesantya

Umbuzo 3: Indlela yokunyusa izinga lesakhelo?

1. Nciphisa --- ubungakanani bemowudi ye-B

2. Nciphisa --- ubunzulu

3. Nciphisa --- umbala wesakhelo sesampulu

4. Nciphisa --- umndilili wesakhelo

5. Nciphisa --- inani leengongoma ekugxilwe kuzo

6. Nciphisa --- umgama wokubona

3. Indlela yokulungelelanisa i-Spectral Doppler

1. Indlela yokusebenza: Ukuba izinga lokuhamba alikho phezulu, khetha i-PW, ukuba izinga lokuhamba liphezulu, khetha i-CW.

2. Iimeko zokucoca: Ukucoca okuphantsi kwe-low-pass kusetyenziselwa ukuhamba kwegazi eliphantsi, kunye nokucoca okuphezulu kusetyenziselwa ukuhamba kwegazi ngesantya esiphezulu.

3. Isikali sesantya: Khetha isikali sesantya esihambelana nesantya sokuhamba kwegazi esiboniweyo.

4. Umnyango wesampula: fumana imithwalo yegazi, isampuli yomnyango ≤ isitya segazi sangaphakathi.Qwalasela iivalvu ze-intracardiac

Ucango lwesampulu yomlomo luphakathi.

5. Isiseko se-Zero: ukuhambisa isiseko kunokunyusa uluhlu lokulinganisa kwicala elithile kwaye ugweme iimpazamo.

Ngoku ifihliwe.

6. Isignali yokutshintsha rhoqo ijika phezulu nasezantsi: kulula ukulinganisa, isixhobo sivula ngokuzenzekelayo i-spectrum waveform.

7. I-angle yesiganeko: uvavanyo lwe-cardiovascular ≤ 20, i-peripheral blood vessels ≤ 60, kunye ne-angle kufuneka ilungiswe.

8. Ugqithiso oluphindaphindiweyo: I-frequency ephezulu isetyenziselwa ukuhamba kwegazi okuphantsi, kwaye i-frequency ephantsi isetyenziselwa ukuhamba kwegazi ngesantya esiphezulu.

I-PW ihlala ilungisa umxholo

Xa inzuzo ye-PW inkulu kakhulu

Xa uluhlu luphakathi, luphantsi kakhulu okanye luphezulu kakhulu

Ubungakanani bocango lwesampulu

1. Xa ucango lwesampulu lumxinwa, kukho umahluko omncinci kwisantya sokuqukuqela phakathi kweeleya ezikufutshane, ijika elithi "vt" limxinwa, kwaye ifestile inkulu.

2. Xa ucango lwesampulu lugubungela yonke ilumen, ifestile "izaliswe ngokupheleleyo"

ukulungiswa kwesiseko kuphezulu kakhulu okanyengokunjalophantsi:

Umbuzo 5: Ukonyusa njani uvakalelo lwe-PW&CW

1. Yandisa inzuzo

2. Yandisa imveliso yesandi

3. Yandisa umthamo wesampulu

4. Seta i-engile yokuskena ngokufanelekileyo

Qaphela: Izixhobo ze-ultrasound zineemeko ezicwangcisiweyo kwaye zifanelekile ukuvavanya izitho ezahlukeneyo kunye nezicubu.

Ngokusekelwe kwizicwangciso ezicwangcisiweyo, yenza uhlengahlengiso olufanelekileyo ngokwemiqathango ethile ukuhlangabezana neemfuno zokuxilonga.