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ECHOGRAPHIE-DOPPLER PULSE [1 record]
Record 1 - internal organization data 2017-04-21
Record 1, English
Record 1, Subject field(s)
- Ultrasonography
- Cardiovascular System
Record 1, Main entry term, English
- pulsed Doppler ultrasonography
1, record 1, English, pulsed%20Doppler%20ultrasonography
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- pulsed Doppler 2, record 1, English, pulsed%20Doppler
correct
- pulsed Doppler US 3, record 1, English, pulsed%20Doppler%20US
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
The principal advantage of pulsed Doppler is range resolution, or the ability to sample blood flow in a small, specific area whose location and depth can be varied. A disadvantage of pulsed Doppler, however, is that there are limits to the maximum frequency shifts that can be unambiguously displayed at any given depth. To avoid range ambiguity, the ultrasound pulse must travel down to the selected depth and back before the next pulse can enter the heart. Therefore, the PRF [pulse repetition frequency] or sampling rate is limited at each depth. 4, record 1, English, - pulsed%20Doppler%20ultrasonography
Record 1, French
Record 1, Domaine(s)
- Ultrasonographie
- Système cardio-vasculaire
Record 1, Main entry term, French
- écho-Doppler pulsé
1, record 1, French, %C3%A9cho%2DDoppler%20puls%C3%A9
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- écho-doppler pulsé 2, record 1, French, %C3%A9cho%2Ddoppler%20puls%C3%A9
correct, masculine noun
- échographie-Doppler pulsé 3, record 1, French, %C3%A9chographie%2DDoppler%20puls%C3%A9
correct, feminine noun
- échographie doppler pulsé 4, record 1, French, %C3%A9chographie%20doppler%20puls%C3%A9
correct, feminine noun
- doppler pulsé 5, record 1, French, doppler%20puls%C3%A9
correct, masculine noun
- Doppler pulsé 6, record 1, French, Doppler%20puls%C3%A9
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Technique échographique d'exploration vélocimétrique du cœur et des vaisseaux utilisant l'effet doppler [où] l'émission des ondes ultrasonores est faite en mode pulsé et le signal doppler est obtenu par l'analyse des échos provenant d'une profondeur sélectionnée par l'utilisateur. 7, record 1, French, - %C3%A9cho%2DDoppler%20puls%C3%A9
Record number: 1, Textual support number: 1 OBS
Une même céramique est alternativement émettrice et réceptrice. L’émission des ultrasons est discontinue et chaque brève impulsion est suivie d’une période d’écoute pendant laquelle la sonde recueille les échos qui lui parviennent. Une fenêtre de mesure réglable en profondeur permet de sélectionner de façon précise le volume de la cible à étudier, ce qui évite la superposition des informations. Le mode doppler pulsé est couplé à l'échographie en mode B sur laquelle se fait le repérage de la zone de mesure. Le résultat est représenté sur l'écran sous la forme du tracé du spectre doppler. Le signal doppler appliqué à un haut parleur est également perçu sous forme audible. 7, record 1, French, - %C3%A9cho%2DDoppler%20puls%C3%A9
Record 1, Spanish
Record 1, Textual support, Spanish
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