Ulilungisa kanjani ithuluzi ngesikhathi sokuhlolwa kwe-ultrasound (ngencazelo yesinyathelo ngesinyathelo- Ingxenye 2)

2.CDFI

·Ukusetshenziswa kwe-CDFI: Hlola imithambo yegazi, thola uhlobo lwamapayipi,

Khomba imithambo kanye nemithambo, bonisa imvelaphi kanye nesiqondiso sokugeleza kwegazi,

Isigaba sesikhathi, sibonisa isimo sokugeleza kwegazi, sibonisa isivinini sokugeleza kwegazi ngokushesha

Indawo yesampula ye-Doppler ene-spectral enensayo, eqondisiwe

1) Okuqukethwe okujwayelekile kwe-CDFI (umbhalo obomvu):

2) I-CDFI ayivamisile ukulungisa okuqukethwe

Inzuzo ephelele:

 

Usayizi webhokisi lombala nendawo

Umehluko wesithombe phakathi kwesikali esiphezulu kakhulu, esiphansi kakhulu nesimaphakathi

I-engeli yokuqondisa i-engeli yesampula yesampula yombala

Phambuka eduze komkhumbi wegazi ukuze igazi ligeleze emgodini ligcwale futhi ligculise.

Umbuzo 1: Ungayilungisa kanjani imingcele ye-ultrasound ukuze ubonise ukugeleza kwegazi okunejubane eliphansi?

1. Khulisa---zuza

2. Nciphisa --- ISIKALI sesivinini

3. Engeza --- Amandla okukhipha umsindo

4. Engeza --- isilinganiso sozimele

6. Nciphisa---indawo yesampula

6. Yehlisa --- inani lamaphoyinti okugxilwe kuwo (thuthukisa ukugxila)

7. Nciphisa --- ibanga

Nciphisa--umbukiso wendawo wesampula:

Umbuzo 2: Unganciphisa kanjani ukopha kombala futhi ususe i-aliasing?

1. Nciphisa--zuza

2. Engeza--isikali sesikali sesivinini

Umbuzo 3: Ungalinyusa kanjani izinga lozimele?

1. Yehlisa --- usayizi wemodi B

2. Nciphisa --- ukujula

3. Nciphisa --- uhlaka lwesampula lombala

4. Yehlisa --- isilinganiso sozimele

5. Nciphisa --- inani lamaphuzu okugxilwe kuwo

6. Yehlisa --- ibanga lokutholwa

3. Indlela yokulungisa i-Spectral Doppler

1. Indlela yokusebenza: Uma izinga lokugeleza lingekho phezulu, khetha i-PW, uma izinga lokugeleza liphezulu, khetha u-CW.

2. Izimo zokuhlunga: Ukuhlunga kwe-low-pass kusetshenziselwa ukugeleza kwegazi okunejubane eliphansi, futhi ukuhlunga okuphezulu kusetshenziselwa ukugeleza kwegazi ngesivinini esikhulu.

3. Isikali sesivinini: Khetha isikali sesivinini esihambisana nesivinini sokugeleza kwegazi esitholiwe.

4. Umnyango wesampula: thola imithambo yegazi, isampula yomnyango ≤ ububanzi bangaphakathi bomkhumbi wegazi.Hlola ama-valve e-intracardiac

Umnyango wesampula womlomo unosayizi ophakathi.

5. Isisekelo esinguziro: ukuhambisa isisekelo kungakhuphula ububanzi bokulinganisa endaweni ethile futhi kugweme amaphutha.

Manje isibiziwe.

6. Isiginali ye-frequency shift is flips up and down: kulula ukuyikala, ithuluzi limboza ngokuzenzakalelayo i-spectrum waveform.

7. I-engeli yesigameko: ukuhlolwa kwenhliziyo nemithambo yegazi ≤ 20, imithambo yegazi ejikelezayo ≤ 60, kanye ne-engeli kufanele ilungiswe.

8. Imvamisa yokudlulisela: Imvamisa ephezulu isetshenziselwa ukugeleza kwegazi okunejubane eliphansi, futhi imvamisa ephansi isetshenziselwa ukugeleza kwegazi ngesivinini esikhulu.

I-PW ivamise ukulungisa okuqukethwe

Lapho inzuzo ye-PW inkulu kakhulu

Uma ububanzi bumaphakathi, buphansi kakhulu noma buphakeme kakhulu

Usayizi womnyango wokusampula

1. Uma umnyango wesampula umncane, kunomehluko omncane esivinini sokugeleza phakathi kwezingqimba eziseduze, ijika elithi "vt" lincane, futhi iwindi likhulu.

2. Lapho umnyango wesampula umboza yonke i-lumen, iwindi "ligcwele ngokuphelele"

ukulungiswa kwesisekelo kuphezulu kakhulu nomafuthiphansi:

Umbuzo 5: Ungakukhuphula Kanjani ukuzwela kwe-PW&CW

1. Khulisa inzuzo

2. Khulisa okukhipha umsindo

3. Khulisa umthamo wamasampula

4. Setha i-engeli yokuskena ngendlela efanele

Qaphela: Izinsimbi ze-Ultrasound zinezimo esethiwe futhi zifanele ukuhlola izitho nezicubu ezihlukene.

Ngokusekelwe kuzilungiselelo ezisethiwe, yenza izinguquko ezifanele ngokuya ngezimo ezithile ukuze uhlangabezane nezidingo zokuxilonga.