Color Doppler ultrasound devices are often used to assess the health of the fetal heart during pregnancy. During a fetal ultrasound exam, a transducer placed against the expectant mother's abdomen transmits ultrasound waves with a frequency of 3.500 MHz and receives the Doppler shifted echo from the fetal heart. (a) If the echo received from the fetal heart by the transducer has a frequency of 3.499 M2 and 3.503 Motz from the left and right ventricles, respectively, what is the speed (in cm/s) of the blood flow in these two chambers of the fetal heart? The blood in the left ventricle flows away from the transducer while the blood in the right ventricle flows toward the transducer. Use v= 1.500 ms for the speed of sound in tissue. left ventricle right ventricle cm/s cm/s (b) What if? The Doppler ultrasound transducer is now applied to an adult patient that is feared to have deep vein thrombosis, a blood clot forming in a deep vein, most often in the leg. Operating at the same frequency, what frequency echo (in MHz) would correspond to a "normal blood flow in the common femoral vein of 4.00 cm/'s toward the transducer (Round your answer to at least five decimal places) HHZ
Color Doppler ultrasound devices are often used to assess the health of the fetal heart during pregnancy. During a fetal ultrasound exam, a transducer placed against the expectant mother's abdomen transmits ultrasound waves with a frequency of 3.500 MHz and receives the Doppler shifted echo from the fetal heart. (a) If the echo received from the fetal heart by the transducer has a frequency of 3.499 M2 and 3.503 Motz from the left and right ventricles, respectively, what is the speed (in cm/s) of the blood flow in these two chambers of the fetal heart? The blood in the left ventricle flows away from the transducer while the blood in the right ventricle flows toward the transducer. Use v= 1.500 ms for the speed of sound in tissue. left ventricle right ventricle cm/s cm/s (b) What if? The Doppler ultrasound transducer is now applied to an adult patient that is feared to have deep vein thrombosis, a blood clot forming in a deep vein, most often in the leg. Operating at the same frequency, what frequency echo (in MHz) would correspond to a "normal blood flow in the common femoral vein of 4.00 cm/'s toward the transducer (Round your answer to at least five decimal places) HHZ
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Transcribed Image Text:Color Doppler ultrasound devices are often used to assess the health of the fetal heart during pregnancy. During a fetal ultrasound exam, a transducer placed against the expectant
mother's abdomen transmits ultrasound waves with a frequency of 3.500 MHz and receives the Doppler shifted echo from the fetal heart.
(a) If the echo received from the fetal heart by the transducer has a frequency of 3.499 MHz and 3.503 MHz from the left and right ventricles, respectively, what is the speed (in cm/s)
of the blood flow in these two chambers of the fetal heart? The blood in the left ventricle flows away from the transducer while the blood in the right ventricle flows toward the
transducer. Use v = 1,500 ms for the speed of sound in tissue.
cm/s
cm/s
left ventricle
right ventricle
(b) What if? The Doppler ultrasound transducer is now applied to an adult patient that is feared to have deep vein thrombosis, a blood clot forming in a deep vein, most often in the
leg, Operating at the same frequency, what frequency echo (in MHz) would correspond to a "normal" blood flow in the common femoral vein of 4.00 cm/s toward the transducer
(Round your answer to at least five decimal places)
MHz
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