doppler isuog dany
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Este documento resume las Guías de Práctica sobre la forma de realizar la ecografía Doppler de la circulación feto placentaria
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Figura 1. Forma de onda de la arteria uterina obtenida transabdominal en el primer trimestre.
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Figura 2. Formas de onda de la arteria uterina obtenida transabdominal en el segundo trimestre. Normal (A) y anormales (b) formas de onda; muesca nota (flecha) en la señal Doppler en (b).
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Técnica TA
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Técnica TV
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Figura 3. Aceptable (a) y inaceptable (b) formas de onda de la arteria umbilical.
En (b), las formas de onda son demasiado pequeños y demasiado lenta velocidad de barrido.
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Figura 4. (a) el flujo normal y (b) flujo diastólico aparentemente muy bajo y señales de flujo ausentes debido al uso del filtro.
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Figura 5. mapeo de flujo color del círculo de Willis.
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Figura 6. forma de onda Doppler de la arteria cerebral media.
Ángulo insonación cerca de 0 °.
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Figura 7. Doppler ductus venoso.
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8. (a). La interferencia, hace que sea difícil verificar componente inversa durante la contracción auricular (puntas de flecha). (B) Una repetición de la grabación con ligero aumento del filtro mejora la calidad y permite la visualización clara de la componente de velocidad inversa durante la contracción auricular (puntas de flecha).
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