Multiple frequency doppler ultrasound probe

Details Multiple frequency doppler ultrasound probe Multiple frequency doppler ultrasound probe

G - Physics

01

N

G01N 29/04 (2006.01) A61B 8/06 (2006.01) G01N 29/24 (2006.01) G01S 7/523 (2006.01) G01S 7/539 (2006.01)

Patent

CA 2651078

A method of measuring blood flow through a blood vessel is provided using a single quasi-continuous mode probe that can support multiple frequencies without increasing the probe tip size. A plurality of elements are provided in the probe tip. Each element emits ultrasound waves using a long pulsed signal with each element having a different resonant frequency. Each element also receives ultrasound energy in a continuous mode. A selector is manually controlled by a practitioner to select the active element. The output may take a variety of forms. For example, the output may be printed, displayed, recorded to a memory, and/or played through a speaker or headset.

L'invention concerne un procédé de mesure du flux sanguin dans un vaisseau sanguin au moyen d'une sonde individuelle à mode quasi continu pouvant supporter plusieurs fréquences sans augmenter la taille de la pointe de sonde. La pointe de sonde contient une pluralité d'éléments. Chaque élément émet des ondes ultrasonores au moyen d'un signal à impulsions longues, chaque élément ayant une fréquence de résonance différente. Chaque élément reçoit également de l'énergie ultrasonore en mode continu. Un sélecteur est commandé manuellement par un médecin pour sélectionner l'élément actif. La sortie peut prendre diverses formes. La sortie peut par exemple être imprimée, affichée, enregistrée dans une mémoire et/ou émise par un haut-parleur ou un casque.

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